diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ax_append_flag.m4 | 71 | ||||
| -rw-r--r-- | m4/ax_cflags_warn_all.m4 | 122 | ||||
| -rw-r--r-- | m4/ax_check_compile_flag.m4 | 74 | ||||
| -rw-r--r-- | m4/ax_check_enable_debug.m4 | 124 | ||||
| -rw-r--r-- | m4/ax_check_gnu_make.m4 | 84 | ||||
| -rw-r--r-- | m4/ax_check_link_flag.m4 | 74 | ||||
| -rw-r--r-- | m4/ax_code_coverage.m4 | 273 | ||||
| -rw-r--r-- | m4/ax_configure_args.m4 | 70 | ||||
| -rw-r--r-- | m4/ax_enable_builddir.m4 | 302 | ||||
| -rw-r--r-- | m4/ax_extend_srcdir.m4 | 86 | ||||
| -rw-r--r-- | m4/ax_pthread.m4 | 485 | ||||
| -rw-r--r-- | m4/ax_require_defined.m4 | 37 | ||||
| -rw-r--r-- | m4/ax_sanitizers.m4 | 130 |
13 files changed, 1932 insertions, 0 deletions
diff --git a/m4/ax_append_flag.m4 b/m4/ax_append_flag.m4 new file mode 100644 index 0000000..08f2e07 --- /dev/null +++ b/m4/ax_append_flag.m4 @@ -0,0 +1,71 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_append_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE]) +# +# DESCRIPTION +# +# FLAG is appended to the FLAGS-VARIABLE shell variable, with a space +# added in between. +# +# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. +# CFLAGS) is used. FLAGS-VARIABLE is not changed if it already contains +# FLAG. If FLAGS-VARIABLE is unset in the shell, it is set to exactly +# FLAG. +# +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> +# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> +# +# This program is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation, either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 6 + +AC_DEFUN([AX_APPEND_FLAG], +[dnl +AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF +AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])]) +AS_VAR_SET_IF(FLAGS,[ + AS_CASE([" AS_VAR_GET(FLAGS) "], + [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])], + [ + AS_VAR_APPEND(FLAGS,[" $1"]) + AC_RUN_LOG([: FLAGS="$FLAGS"]) + ]) + ], + [ + AS_VAR_SET(FLAGS,[$1]) + AC_RUN_LOG([: FLAGS="$FLAGS"]) + ]) +AS_VAR_POPDEF([FLAGS])dnl +])dnl AX_APPEND_FLAG diff --git a/m4/ax_cflags_warn_all.m4 b/m4/ax_cflags_warn_all.m4 new file mode 100644 index 0000000..1f07799 --- /dev/null +++ b/m4/ax_cflags_warn_all.m4 @@ -0,0 +1,122 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_cflags_warn_all.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])] +# AX_CXXFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])] +# AX_FCFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])] +# +# DESCRIPTION +# +# Try to find a compiler option that enables most reasonable warnings. +# +# For the GNU compiler it will be -Wall (and -ansi -pedantic) The result +# is added to the shellvar being CFLAGS, CXXFLAGS, or FCFLAGS by default. +# +# Currently this macro knows about the GCC, Solaris, Digital Unix, AIX, +# HP-UX, IRIX, NEC SX-5 (Super-UX 10), Cray J90 (Unicos 10.0.0.8), and +# Intel compilers. For a given compiler, the Fortran flags are much more +# experimental than their C equivalents. +# +# - $1 shell-variable-to-add-to : CFLAGS, CXXFLAGS, or FCFLAGS +# - $2 add-value-if-not-found : nothing +# - $3 action-if-found : add value to shellvariable +# - $4 action-if-not-found : nothing +# +# NOTE: These macros depend on AX_APPEND_FLAG. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> +# Copyright (c) 2010 Rhys Ulerich <rhys.ulerich@gmail.com> +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 15 + +AC_DEFUN([AX_FLAGS_WARN_ALL],[dnl +AS_VAR_PUSHDEF([FLAGS],[_AC_LANG_PREFIX[]FLAGS])dnl +AS_VAR_PUSHDEF([VAR],[ac_cv_[]_AC_LANG_ABBREV[]flags_warn_all])dnl +AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum warnings], +VAR,[VAR="no, unknown" +ac_save_[]FLAGS="$[]FLAGS" +for ac_arg dnl +in "-warn all % -warn all" dnl Intel + "-pedantic % -Wall" dnl GCC + "-xstrconst % -v" dnl Solaris C + "-std1 % -verbose -w0 -warnprotos" dnl Digital Unix + "-qlanglvl=ansi % -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX + "-ansi -ansiE % -fullwarn" dnl IRIX + "+ESlit % +w1" dnl HP-UX C + "-Xc % -pvctl[,]fullmsg" dnl NEC SX-5 (Super-UX 10) + "-h conform % -h msglevel 2" dnl Cray C (Unicos) + # +do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'` + AC_COMPILE_IFELSE([AC_LANG_PROGRAM], + [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break]) +done +FLAGS="$ac_save_[]FLAGS" +]) +AS_VAR_POPDEF([FLAGS])dnl +AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) +case ".$VAR" in + .ok|.ok,*) m4_ifvaln($3,$3) ;; + .|.no|.no,*) m4_default($4,[m4_ifval($2,[AX_APPEND_FLAG([$2], [$1])])]) ;; + *) m4_default($3,[AX_APPEND_FLAG([$VAR], [$1])]) ;; +esac +AS_VAR_POPDEF([VAR])dnl +])dnl AX_FLAGS_WARN_ALL +dnl implementation tactics: +dnl the for-argument contains a list of options. The first part of +dnl these does only exist to detect the compiler - usually it is +dnl a global option to enable -ansi or -extrawarnings. All other +dnl compilers will fail about it. That was needed since a lot of +dnl compilers will give false positives for some option-syntax +dnl like -Woption or -Xoption as they think of it is a pass-through +dnl to later compile stages or something. The "%" is used as a +dnl delimiter. A non-option comment can be given after "%%" marks +dnl which will be shown but not added to the respective C/CXXFLAGS. + +AC_DEFUN([AX_CFLAGS_WARN_ALL],[dnl +AC_LANG_PUSH([C]) +AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) +AC_LANG_POP([C]) +]) + +AC_DEFUN([AX_CXXFLAGS_WARN_ALL],[dnl +AC_LANG_PUSH([C++]) +AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) +AC_LANG_POP([C++]) +]) + +AC_DEFUN([AX_FCFLAGS_WARN_ALL],[dnl +AC_LANG_PUSH([Fortran]) +AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) +AC_LANG_POP([Fortran]) +]) diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4 new file mode 100644 index 0000000..ca36397 --- /dev/null +++ b/m4/ax_check_compile_flag.m4 @@ -0,0 +1,74 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT]) +# +# DESCRIPTION +# +# Check whether the given FLAG works with the current language's compiler +# or gives an error. (Warnings, however, are ignored) +# +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +# success/failure. +# +# If EXTRA-FLAGS is defined, it is added to the current language's default +# flags (e.g. CFLAGS) when the check is done. The check is thus made with +# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to +# force the compiler to issue an error when a bad flag is given. +# +# INPUT gives an alternative input source to AC_COMPILE_IFELSE. +# +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this +# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> +# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> +# +# This program is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation, either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 4 + +AC_DEFUN([AX_CHECK_COMPILE_FLAG], +[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF +AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl +AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [ + ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS + _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1" + AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])], + [AS_VAR_SET(CACHEVAR,[yes])], + [AS_VAR_SET(CACHEVAR,[no])]) + _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags]) +AS_VAR_IF(CACHEVAR,yes, + [m4_default([$2], :)], + [m4_default([$3], :)]) +AS_VAR_POPDEF([CACHEVAR])dnl +])dnl AX_CHECK_COMPILE_FLAGS diff --git a/m4/ax_check_enable_debug.m4 b/m4/ax_check_enable_debug.m4 new file mode 100644 index 0000000..f99d75f --- /dev/null +++ b/m4/ax_check_enable_debug.m4 @@ -0,0 +1,124 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_check_enable_debug.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_ENABLE_DEBUG([enable by default=yes/info/profile/no], [ENABLE DEBUG VARIABLES ...], [DISABLE DEBUG VARIABLES NDEBUG ...], [IS-RELEASE]) +# +# DESCRIPTION +# +# Check for the presence of an --enable-debug option to configure, with +# the specified default value used when the option is not present. Return +# the value in the variable $ax_enable_debug. +# +# Specifying 'yes' adds '-g -O0' to the compilation flags for all +# languages. Specifying 'info' adds '-g' to the compilation flags. +# Specifying 'profile' adds '-g -pg' to the compilation flags and '-pg' to +# the linking flags. Otherwise, nothing is added. +# +# Define the variables listed in the second argument if debug is enabled, +# defaulting to no variables. Defines the variables listed in the third +# argument if debug is disabled, defaulting to NDEBUG. All lists of +# variables should be space-separated. +# +# If debug is not enabled, ensure AC_PROG_* will not add debugging flags. +# Should be invoked prior to any AC_PROG_* compiler checks. +# +# IS-RELEASE can be used to change the default to 'no' when making a +# release. Set IS-RELEASE to 'yes' or 'no' as appropriate. By default, it +# uses the value of $ax_is_release, so if you are using the AX_IS_RELEASE +# macro, there is no need to pass this parameter. +# +# AX_IS_RELEASE([git-directory]) +# AX_CHECK_ENABLE_DEBUG() +# +# LICENSE +# +# Copyright (c) 2011 Rhys Ulerich <rhys.ulerich@gmail.com> +# Copyright (c) 2014, 2015 Philip Withnall <philip@tecnocode.co.uk> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. + +#serial 5 + +AC_DEFUN([AX_CHECK_ENABLE_DEBUG],[ + AC_BEFORE([$0],[AC_PROG_CC])dnl + AC_BEFORE([$0],[AC_PROG_CXX])dnl + AC_BEFORE([$0],[AC_PROG_F77])dnl + AC_BEFORE([$0],[AC_PROG_FC])dnl + + AC_MSG_CHECKING(whether to enable debugging) + + ax_enable_debug_default=m4_tolower(m4_normalize(ifelse([$1],,[no],[$1]))) + ax_enable_debug_is_release=m4_tolower(m4_normalize(ifelse([$4],, + [$ax_is_release], + [$4]))) + + # If this is a release, override the default. + AS_IF([test "$ax_enable_debug_is_release" = "yes"], + [ax_enable_debug_default="no"]) + + m4_define(ax_enable_debug_vars,[m4_normalize(ifelse([$2],,,[$2]))]) + m4_define(ax_disable_debug_vars,[m4_normalize(ifelse([$3],,[NDEBUG],[$3]))]) + + AC_ARG_ENABLE(debug, + [AS_HELP_STRING([--enable-debug=]@<:@yes/info/profile/no@:>@,[compile with debugging])], + [],enable_debug=$ax_enable_debug_default) + + # empty mean debug yes + AS_IF([test "x$enable_debug" = "x"], + [enable_debug="yes"]) + + # case of debug + AS_CASE([$enable_debug], + [yes],[ + AC_MSG_RESULT(yes) + CFLAGS="${CFLAGS} -g -O0" + CXXFLAGS="${CXXFLAGS} -g -O0" + FFLAGS="${FFLAGS} -g -O0" + FCFLAGS="${FCFLAGS} -g -O0" + OBJCFLAGS="${OBJCFLAGS} -g -O0" + ], + [info],[ + AC_MSG_RESULT(info) + CFLAGS="${CFLAGS} -g" + CXXFLAGS="${CXXFLAGS} -g" + FFLAGS="${FFLAGS} -g" + FCFLAGS="${FCFLAGS} -g" + OBJCFLAGS="${OBJCFLAGS} -g" + ], + [profile],[ + AC_MSG_RESULT(profile) + CFLAGS="${CFLAGS} -g -pg" + CXXFLAGS="${CXXFLAGS} -g -pg" + FFLAGS="${FFLAGS} -g -pg" + FCFLAGS="${FCFLAGS} -g -pg" + OBJCFLAGS="${OBJCFLAGS} -g -pg" + LDFLAGS="${LDFLAGS} -pg" + ], + [ + AC_MSG_RESULT(no) + dnl Ensure AC_PROG_CC/CXX/F77/FC/OBJC will not enable debug flags + dnl by setting any unset environment flag variables + AS_IF([test "x${CFLAGS+set}" != "xset"], + [CFLAGS=""]) + AS_IF([test "x${CXXFLAGS+set}" != "xset"], + [CXXFLAGS=""]) + AS_IF([test "x${FFLAGS+set}" != "xset"], + [FFLAGS=""]) + AS_IF([test "x${FCFLAGS+set}" != "xset"], + [FCFLAGS=""]) + AS_IF([test "x${OBJCFLAGS+set}" != "xset"], + [OBJCFLAGS=""]) + ]) + + dnl Define various variables if debugging is disabled. + dnl assert.h is a NOP if NDEBUG is defined, so define it by default. + AS_IF([test "x$enable_debug" = "xyes"], + [m4_map_args_w(ax_enable_debug_vars, [AC_DEFINE(], [,,[Define if debugging is enabled])])], + [m4_map_args_w(ax_disable_debug_vars, [AC_DEFINE(], [,,[Define if debugging is disabled])])]) + ax_enable_debug=$enable_debug +]) diff --git a/m4/ax_check_gnu_make.m4 b/m4/ax_check_gnu_make.m4 new file mode 100644 index 0000000..6762e9e --- /dev/null +++ b/m4/ax_check_gnu_make.m4 @@ -0,0 +1,84 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_check_gnu_make.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_GNU_MAKE() +# +# DESCRIPTION +# +# This macro searches for a GNU version of make. If a match is found: +# +# * The makefile variable `ifGNUmake' is set to the empty string, otherwise +# it is set to "#". This is useful for including a special features in a +# Makefile, which cannot be handled by other versions of make. +# * The variable `_cv_gnu_make_command` is set to the command to invoke +# GNU make if it exists, the empty string otherwise. +# * The variable `ax_cv_gnu_make_command` is set to the command to invoke +# GNU make by copying `_cv_gnu_make_command`, otherwise it is unset. +# * If GNU Make is found, its version is extracted from the output of +# `make --version` as the last field of a record of space-separated +# columns and saved into the variable `ax_check_gnu_make_version`. +# +# Here is an example of its use: +# +# Makefile.in might contain: +# +# # A failsafe way of putting a dependency rule into a makefile +# $(DEPEND): +# $(CC) -MM $(srcdir)/*.c > $(DEPEND) +# +# @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND))) +# @ifGNUmake@ include $(DEPEND) +# @ifGNUmake@ endif +# +# Then configure.in would normally contain: +# +# AX_CHECK_GNU_MAKE() +# AC_OUTPUT(Makefile) +# +# Then perhaps to cause gnu make to override any other make, we could do +# something like this (note that GNU make always looks for GNUmakefile +# first): +# +# if ! test x$_cv_gnu_make_command = x ; then +# mv Makefile GNUmakefile +# echo .DEFAULT: > Makefile ; +# echo \ $_cv_gnu_make_command \$@ >> Makefile; +# fi +# +# Then, if any (well almost any) other make is called, and GNU make also +# exists, then the other make wraps the GNU make. +# +# LICENSE +# +# Copyright (c) 2008 John Darrington <j.darrington@elvis.murdoch.edu.au> +# Copyright (c) 2015 Enrico M. Crisostomo <enrico.m.crisostomo@gmail.com> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 8 + +AC_DEFUN([AX_CHECK_GNU_MAKE],dnl + [AC_PROG_AWK + AC_CACHE_CHECK([for GNU make],[_cv_gnu_make_command],[dnl + _cv_gnu_make_command="" ; +dnl Search all the common names for GNU make + for a in "$MAKE" make gmake gnumake ; do + if test -z "$a" ; then continue ; fi ; + if "$a" --version 2> /dev/null | grep GNU 2>&1 > /dev/null ; then + _cv_gnu_make_command=$a ; + AX_CHECK_GNU_MAKE_HEADLINE=$("$a" --version 2> /dev/null | grep "GNU Make") + ax_check_gnu_make_version=$(echo ${AX_CHECK_GNU_MAKE_HEADLINE} | ${AWK} -F " " '{ print $(NF); }') + break ; + fi + done ;]) +dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, '#' otherwise + AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifGNUmake], ["#"])], [AS_VAR_SET([ifGNUmake], [""])]) + AS_VAR_IF([_cv_gnu_make_command], [""], [AS_UNSET(ax_cv_gnu_make_command)], [AS_VAR_SET([ax_cv_gnu_make_command], [${_cv_gnu_make_command}])]) + AC_SUBST([ifGNUmake]) +]) diff --git a/m4/ax_check_link_flag.m4 b/m4/ax_check_link_flag.m4 new file mode 100644 index 0000000..eb01a6c --- /dev/null +++ b/m4/ax_check_link_flag.m4 @@ -0,0 +1,74 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT]) +# +# DESCRIPTION +# +# Check whether the given FLAG works with the linker or gives an error. +# (Warnings, however, are ignored) +# +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +# success/failure. +# +# If EXTRA-FLAGS is defined, it is added to the linker's default flags +# when the check is done. The check is thus made with the flags: "LDFLAGS +# EXTRA-FLAGS FLAG". This can for example be used to force the linker to +# issue an error when a bad flag is given. +# +# INPUT gives an alternative input source to AC_LINK_IFELSE. +# +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this +# macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> +# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> +# +# This program is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation, either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 4 + +AC_DEFUN([AX_CHECK_LINK_FLAG], +[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF +AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl +AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [ + ax_check_save_flags=$LDFLAGS + LDFLAGS="$LDFLAGS $4 $1" + AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])], + [AS_VAR_SET(CACHEVAR,[yes])], + [AS_VAR_SET(CACHEVAR,[no])]) + LDFLAGS=$ax_check_save_flags]) +AS_VAR_IF(CACHEVAR,yes, + [m4_default([$2], :)], + [m4_default([$3], :)]) +AS_VAR_POPDEF([CACHEVAR])dnl +])dnl AX_CHECK_LINK_FLAGS diff --git a/m4/ax_code_coverage.m4 b/m4/ax_code_coverage.m4 new file mode 100644 index 0000000..6c985eb --- /dev/null +++ b/m4/ax_code_coverage.m4 @@ -0,0 +1,273 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_code_coverage.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CODE_COVERAGE() +# +# DESCRIPTION +# +# Defines CODE_COVERAGE_CPPFLAGS, CODE_COVERAGE_CFLAGS, +# CODE_COVERAGE_CXXFLAGS and CODE_COVERAGE_LDFLAGS which should be +# included in the CPPFLAGS, CFLAGS CXXFLAGS and LIBS/LDFLAGS variables of +# every build target (program or library) which should be built with code +# coverage support. Also defines CODE_COVERAGE_RULES which should be +# substituted in your Makefile; and $enable_code_coverage which can be +# used in subsequent configure output. CODE_COVERAGE_ENABLED is defined +# and substituted, and corresponds to the value of the +# --enable-code-coverage option, which defaults to being disabled. +# +# Test also for gcov program and create GCOV variable that could be +# substituted. +# +# Note that all optimisation flags in CFLAGS must be disabled when code +# coverage is enabled. +# +# Usage example: +# +# configure.ac: +# +# AX_CODE_COVERAGE +# +# Makefile.am: +# +# @CODE_COVERAGE_RULES@ +# my_program_LIBS = ... $(CODE_COVERAGE_LDFLAGS) ... +# my_program_CPPFLAGS = ... $(CODE_COVERAGE_CPPFLAGS) ... +# my_program_CFLAGS = ... $(CODE_COVERAGE_CFLAGS) ... +# my_program_CXXFLAGS = ... $(CODE_COVERAGE_CXXFLAGS) ... +# +# This results in a "check-code-coverage" rule being added to any +# Makefile.am which includes "@CODE_COVERAGE_RULES@" (assuming the module +# has been configured with --enable-code-coverage). Running `make +# check-code-coverage` in that directory will run the module's test suite +# (`make check`) and build a code coverage report detailing the code which +# was touched, then print the URI for the report. +# +# This code was derived from Makefile.decl in GLib, originally licenced +# under LGPLv2.1+. +# +# LICENSE +# +# Copyright (c) 2012, 2016 Philip Withnall +# Copyright (c) 2012 Xan Lopez +# Copyright (c) 2012 Christian Persch +# Copyright (c) 2012 Paolo Borelli +# Copyright (c) 2012 Dan Winship +# Copyright (c) 2015 Bastien ROUCARIES +# +# This library is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or (at +# your option) any later version. +# +# This library is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser +# General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +#serial 15 + +AC_DEFUN([AX_CODE_COVERAGE],[ + dnl Check for --enable-code-coverage + AC_REQUIRE([AC_PROG_SED]) + + # allow to override gcov location + AC_ARG_WITH([gcov], + [AS_HELP_STRING([--with-gcov[=GCOV]], [use given GCOV for coverage (GCOV=gcov).])], + [_AX_CODE_COVERAGE_GCOV_PROG_WITH=$with_gcov], + [_AX_CODE_COVERAGE_GCOV_PROG_WITH=gcov]) + + AC_MSG_CHECKING([whether to build with code coverage support]) + AC_ARG_ENABLE([code-coverage], + AS_HELP_STRING([--enable-code-coverage], + [Whether to enable code coverage support]),, + enable_code_coverage=no) + + AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test x$enable_code_coverage = xyes]) + AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage]) + AC_MSG_RESULT($enable_code_coverage) + + AS_IF([ test "$enable_code_coverage" = "yes" ], [ + # check for gcov + AC_CHECK_TOOL([GCOV], + [$_AX_CODE_COVERAGE_GCOV_PROG_WITH], + [:]) + AS_IF([test "X$GCOV" = "X:"], + [AC_MSG_ERROR([gcov is needed to do coverage])]) + AC_SUBST([GCOV]) + + dnl Check if gcc is being used + AS_IF([ test "$GCC" = "no" ], [ + AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage]) + ]) + + # List of supported lcov versions. + lcov_version_list="1.6 1.7 1.8 1.9 1.10 1.11 1.12" + + AC_CHECK_PROG([LCOV], [lcov], [lcov]) + AC_CHECK_PROG([GENHTML], [genhtml], [genhtml]) + + AS_IF([ test "$LCOV" ], [ + AC_CACHE_CHECK([for lcov version], ax_cv_lcov_version, [ + ax_cv_lcov_version=invalid + lcov_version=`$LCOV -v 2>/dev/null | $SED -e 's/^.* //'` + for lcov_check_version in $lcov_version_list; do + if test "$lcov_version" = "$lcov_check_version"; then + ax_cv_lcov_version="$lcov_check_version (ok)" + fi + done + ]) + ], [ + lcov_msg="To enable code coverage reporting you must have one of the following lcov versions installed: $lcov_version_list" + AC_MSG_ERROR([$lcov_msg]) + ]) + + case $ax_cv_lcov_version in + ""|invalid[)] + lcov_msg="You must have one of the following versions of lcov: $lcov_version_list (found: $lcov_version)." + AC_MSG_ERROR([$lcov_msg]) + LCOV="exit 0;" + ;; + esac + + AS_IF([ test -z "$GENHTML" ], [ + AC_MSG_ERROR([Could not find genhtml from the lcov package]) + ]) + + dnl Build the code coverage flags + CODE_COVERAGE_CPPFLAGS="-DNDEBUG" + CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage" + CODE_COVERAGE_CXXFLAGS="-O0 -g -fprofile-arcs -ftest-coverage" + CODE_COVERAGE_LDFLAGS="-lgcov" + + AC_SUBST([CODE_COVERAGE_CPPFLAGS]) + AC_SUBST([CODE_COVERAGE_CFLAGS]) + AC_SUBST([CODE_COVERAGE_CXXFLAGS]) + AC_SUBST([CODE_COVERAGE_LDFLAGS]) + ]) + +[CODE_COVERAGE_RULES=' +# Code coverage +# +# Optional: +# - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting. +# Multiple directories may be specified, separated by whitespace. +# (Default: $(top_builddir)) +# - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated +# by lcov for code coverage. (Default: +# $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info) +# - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage +# reports to be created. (Default: +# $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage) +# - CODE_COVERAGE_BRANCH_COVERAGE: Set to 1 to enforce branch coverage, +# set to 0 to disable it and leave empty to stay with the default. +# (Default: empty) +# - CODE_COVERAGE_LCOV_SHOPTS_DEFAULT: Extra options shared between both lcov +# instances. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE) +# - CODE_COVERAGE_LCOV_SHOPTS: Extra options to shared between both lcov +# instances. (Default: $CODE_COVERAGE_LCOV_SHOPTS_DEFAULT) +# - CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH: --gcov-tool pathtogcov +# - CODE_COVERAGE_LCOV_OPTIONS_DEFAULT: Extra options to pass to the +# collecting lcov instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH) +# - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the collecting lcov +# instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_DEFAULT) +# - CODE_COVERAGE_LCOV_RMOPTS_DEFAULT: Extra options to pass to the filtering +# lcov instance. (Default: empty) +# - CODE_COVERAGE_LCOV_RMOPTS: Extra options to pass to the filtering lcov +# instance. (Default: $CODE_COVERAGE_LCOV_RMOPTS_DEFAULT) +# - CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT: Extra options to pass to the +# genhtml instance. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE) +# - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml +# instance. (Default: $CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT) +# - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore +# +# The generated report will be titled using the $(PACKAGE_NAME) and +# $(PACKAGE_VERSION). In order to add the current git hash to the title, +# use the git-version-gen script, available online. + +# Optional variables +CODE_COVERAGE_DIRECTORY ?= $(top_builddir) +CODE_COVERAGE_OUTPUT_FILE ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info +CODE_COVERAGE_OUTPUT_DIRECTORY ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage +CODE_COVERAGE_BRANCH_COVERAGE ?= +CODE_COVERAGE_LCOV_SHOPTS_DEFAULT ?= $(if $(CODE_COVERAGE_BRANCH_COVERAGE),\ +--rc lcov_branch_coverage=$(CODE_COVERAGE_BRANCH_COVERAGE)) +CODE_COVERAGE_LCOV_SHOPTS ?= $(CODE_COVERAGE_LCOV_SHOPTS_DEFAULT) +CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH ?= --gcov-tool "$(GCOV)" +CODE_COVERAGE_LCOV_OPTIONS_DEFAULT ?= $(CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH) +CODE_COVERAGE_LCOV_OPTIONS ?= $(CODE_COVERAGE_LCOV_OPTIONS_DEFAULT) +CODE_COVERAGE_LCOV_RMOPTS_DEFAULT ?= +CODE_COVERAGE_LCOV_RMOPTS ?= $(CODE_COVERAGE_LCOV_RMOPTS_DEFAULT) +CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT ?=\ +$(if $(CODE_COVERAGE_BRANCH_COVERAGE),\ +--rc genhtml_branch_coverage=$(CODE_COVERAGE_BRANCH_COVERAGE)) +CODE_COVERAGE_GENHTML_OPTIONS ?= $(CODE_COVERAGE_GENHTML_OPTIONS_DEFAULTS) +CODE_COVERAGE_IGNORE_PATTERN ?= + +code_coverage_v_lcov_cap = $(code_coverage_v_lcov_cap_$(V)) +code_coverage_v_lcov_cap_ = $(code_coverage_v_lcov_cap_$(AM_DEFAULT_VERBOSITY)) +code_coverage_v_lcov_cap_0 = @echo " LCOV --capture"\ + $(CODE_COVERAGE_OUTPUT_FILE); +code_coverage_v_lcov_ign = $(code_coverage_v_lcov_ign_$(V)) +code_coverage_v_lcov_ign_ = $(code_coverage_v_lcov_ign_$(AM_DEFAULT_VERBOSITY)) +code_coverage_v_lcov_ign_0 = @echo " LCOV --remove /tmp/*"\ + $(CODE_COVERAGE_IGNORE_PATTERN); +code_coverage_v_genhtml = $(code_coverage_v_genhtml_$(V)) +code_coverage_v_genhtml_ = $(code_coverage_v_genhtml_$(AM_DEFAULT_VERBOSITY)) +code_coverage_v_genhtml_0 = @echo " GEN " $(CODE_COVERAGE_OUTPUT_DIRECTORY); +code_coverage_quiet = $(code_coverage_quiet_$(V)) +code_coverage_quiet_ = $(code_coverage_quiet_$(AM_DEFAULT_VERBOSITY)) +code_coverage_quiet_0 = --quiet + +# sanitizes the test-name: replaces with underscores: dashes and dots +code_coverage_sanitize = $(subst -,_,$(subst .,_,$(1))) + +# Use recursive makes in order to ignore errors during check +check-code-coverage: +ifeq ($(CODE_COVERAGE_ENABLED),yes) + -$(A''M_V_at)$(MAKE) $(AM_MAKEFLAGS) -k check + $(A''M_V_at)$(MAKE) $(AM_MAKEFLAGS) code-coverage-capture +else + @echo "Need to reconfigure with --enable-code-coverage" +endif + +# Capture code coverage data +code-coverage-capture: code-coverage-capture-hook +ifeq ($(CODE_COVERAGE_ENABLED),yes) + $(code_coverage_v_lcov_cap)$(LCOV) $(code_coverage_quiet) $(addprefix --directory ,$(CODE_COVERAGE_DIRECTORY)) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(call code_coverage_sanitize,$(PACKAGE_NAME)-$(PACKAGE_VERSION))" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_SHOPTS) $(CODE_COVERAGE_LCOV_OPTIONS) + $(code_coverage_v_lcov_ign)$(LCOV) $(code_coverage_quiet) $(addprefix --directory ,$(CODE_COVERAGE_DIRECTORY)) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_LCOV_SHOPTS) $(CODE_COVERAGE_LCOV_RMOPTS) + -@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp + $(code_coverage_v_genhtml)LANG=C $(GENHTML) $(code_coverage_quiet) $(addprefix --prefix ,$(CODE_COVERAGE_DIRECTORY)) --output-directory "$(CODE_COVERAGE_OUTPUT_DIRECTORY)" --title "$(PACKAGE_NAME)-$(PACKAGE_VERSION) Code Coverage" --legend --show-details "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_GENHTML_OPTIONS) + @echo "file://$(abs_builddir)/$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html" +else + @echo "Need to reconfigure with --enable-code-coverage" +endif + +# Hook rule executed before code-coverage-capture, overridable by the user +code-coverage-capture-hook: + +ifeq ($(CODE_COVERAGE_ENABLED),yes) +clean: code-coverage-clean +code-coverage-clean: + -$(LCOV) --directory $(top_builddir) -z + -rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY) + -find . -name "*.gcda" -o -name "*.gcov" -delete +endif + +GITIGNOREFILES ?= +GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY) + +A''M_DISTCHECK_CONFIGURE_FLAGS ?= +A''M_DISTCHECK_CONFIGURE_FLAGS += --disable-code-coverage + +.PHONY: check-code-coverage code-coverage-capture code-coverage-capture-hook code-coverage-clean +'] + + AC_SUBST([CODE_COVERAGE_RULES]) + m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([CODE_COVERAGE_RULES])]) +]) diff --git a/m4/ax_configure_args.m4 b/m4/ax_configure_args.m4 new file mode 100644 index 0000000..0726b1b --- /dev/null +++ b/m4/ax_configure_args.m4 @@ -0,0 +1,70 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_configure_args.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CONFIGURE_ARGS +# +# DESCRIPTION +# +# Helper macro for AX_ENABLE_BUILDDIR. +# +# The traditional way of starting a subdir-configure is running the script +# with ${1+"$@"} but since autoconf 2.60 this is broken. Instead we have +# to rely on eval'ing $ac_configure_args however some old autoconf +# versions do not provide that. To ensure maximum portability of autoconf +# extension macros this helper can be AC_REQUIRE'd so that +# $ac_configure_args will alsways be present. +# +# Sadly, the traditional "exec $SHELL" of the enable_builddir macros is +# spoiled now and must be replaced by "eval + exit $?". +# +# Example: +# +# AC_DEFUN([AX_ENABLE_SUBDIR],[dnl +# AC_REQUIRE([AX_CONFIGURE_ARGS])dnl +# eval $SHELL $ac_configure_args || exit $? +# ...]) +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 9 + +AC_DEFUN([AX_CONFIGURE_ARGS],[ + # [$]@ is unsable in 2.60+ but earlier autoconf had no ac_configure_args + if test "${ac_configure_args+set}" != "set" ; then + ac_configure_args= + for ac_arg in ${1+"[$]@"}; do + ac_configure_args="$ac_configure_args '$ac_arg'" + done + fi +]) diff --git a/m4/ax_enable_builddir.m4 b/m4/ax_enable_builddir.m4 new file mode 100644 index 0000000..5f4ba32 --- /dev/null +++ b/m4/ax_enable_builddir.m4 @@ -0,0 +1,302 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_enable_builddir.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_ENABLE_BUILDDIR [(dirstring-or-command [,Makefile.mk [,-all]])] +# +# DESCRIPTION +# +# If the current configure was run within the srcdir then we move all +# configure-files into a subdir and let the configure steps continue +# there. We provide an option --disable-builddir to suppress the move into +# a separate builddir. +# +# Defaults: +# +# $1 = $host (overridden with $HOST) +# $2 = Makefile.mk +# $3 = -all +# +# This macro must be called before AM_INIT_AUTOMAKE. It creates a default +# toplevel srcdir Makefile from the information found in the created +# toplevel builddir Makefile. It just copies the variables and +# rule-targets, each extended with a default rule-execution that recurses +# into the build directory of the current "HOST". You can override the +# auto-dection through `config.guess` and build-time of course, as in +# +# make HOST=i386-mingw-cross +# +# which can of course set at configure time as well using +# +# configure --host=i386-mingw-cross +# +# After the default has been created, additional rules can be appended +# that will not just recurse into the subdirectories and only ever exist +# in the srcdir toplevel makefile - these parts are read from the $2 = +# Makefile.mk file +# +# The automatic rules are usually scanning the toplevel Makefile for lines +# like '#### $host |$builddir' to recognize the place where to recurse +# into. Usually, the last one is the only one used. However, almost all +# targets have an additional "*-all" rule which makes the script to +# recurse into _all_ variants of the current HOST (!!) setting. The "-all" +# suffix can be overriden for the macro as well. +# +# a special rule is only given for things like "dist" that will copy the +# tarball from the builddir to the sourcedir (or $(PUB)) for reason of +# convenience. +# +# LICENSE +# +# Copyright (c) 2009 Guido U. Draheim <guidod@gmx.de> +# Copyright (c) 2009 Alan Jenkins <alan-jenkins@tuffmail.co.uk> +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 25 + +AC_DEFUN([AX_ENABLE_BUILDDIR],[ +AC_REQUIRE([AC_CANONICAL_HOST])[]dnl +AC_REQUIRE([AC_CANONICAL_TARGET])[]dnl +AC_REQUIRE([AX_CONFIGURE_ARGS])[]dnl +AC_REQUIRE([AM_AUX_DIR_EXPAND])[]dnl +AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl +AS_VAR_PUSHDEF([SUB],[ax_enable_builddir])dnl +AS_VAR_PUSHDEF([AUX],[ax_enable_builddir_auxdir])dnl +AS_VAR_PUSHDEF([SED],[ax_enable_builddir_sed])dnl +SUB="." +AC_ARG_ENABLE([builddir], AS_HELP_STRING( + [--disable-builddir],[disable automatic build in subdir of sources]) + ,[SUB="$enableval"], [SUB="auto"]) +if test ".$ac_srcdir_defaulted" != ".no" ; then +if test ".$srcdir" = ".." ; then + if test -f config.status ; then + AC_MSG_NOTICE(toplevel srcdir already configured... skipping subdir build) + else + test ".$SUB" = "." && SUB="." + test ".$SUB" = ".no" && SUB="." + test ".$TARGET" = "." && TARGET="$target" + test ".$SUB" = ".auto" && SUB="m4_ifval([$1], [$1],[$TARGET])" + if test ".$SUB" != ".." ; then # we know where to go and + AS_MKDIR_P([$SUB]) + echo __.$SUB.__ > $SUB/conftest.tmp + cd $SUB + if grep __.$SUB.__ conftest.tmp >/dev/null 2>/dev/null ; then + rm conftest.tmp + AC_MSG_RESULT([continue configure in default builddir "./$SUB"]) + else + AC_MSG_ERROR([could not change to default builddir "./$SUB"]) + fi + srcdir=`echo "$SUB" | + sed -e 's,^\./,,;s,[[^/]]$,&/,;s,[[^/]]*/,../,g;s,[[/]]$,,;'` + # going to restart from subdirectory location + test -f $srcdir/config.log && mv $srcdir/config.log . + test -f $srcdir/confdefs.h && mv $srcdir/confdefs.h . + test -f $srcdir/conftest.log && mv $srcdir/conftest.log . + test -f $srcdir/$cache_file && mv $srcdir/$cache_file . + AC_MSG_RESULT(....exec $SHELL $srcdir/[$]0 "--srcdir=$srcdir" "--enable-builddir=$SUB" ${1+"[$]@"}) + case "[$]0" in # restart + [[\\/]]* | ?:[[\\/]]*) # Asbolute name + eval $SHELL "'[$]0'" "'--srcdir=$srcdir'" "'--enable-builddir=$SUB'" $ac_configure_args ;; + *) eval $SHELL "'$srcdir/[$]0'" "'--srcdir=$srcdir'" "'--enable-builddir=$SUB'" $ac_configure_args ;; + esac ; exit $? + fi + fi +fi fi +test ".$SUB" = ".auto" && SUB="." +dnl ac_path_prog uses "set dummy" to override $@ which would defeat the "exec" +AC_PATH_PROG(SED,gsed sed, sed) +AUX="$am_aux_dir" +AS_VAR_POPDEF([SED])dnl +AS_VAR_POPDEF([AUX])dnl +AS_VAR_POPDEF([SUB])dnl +AC_CONFIG_COMMANDS([buildir],[dnl .............. config.status .............. +AS_VAR_PUSHDEF([SUB],[ax_enable_builddir])dnl +AS_VAR_PUSHDEF([TOP],[top_srcdir])dnl +AS_VAR_PUSHDEF([SRC],[ac_top_srcdir])dnl +AS_VAR_PUSHDEF([AUX],[ax_enable_builddir_auxdir])dnl +AS_VAR_PUSHDEF([SED],[ax_enable_builddir_sed])dnl +pushdef([END],[Makefile.mk])dnl +pushdef([_ALL],[ifelse([$3],,[-all],[$3])])dnl + SRC="$ax_enable_builddir_srcdir" + if test ".$SUB" = ".." ; then + if test -f "$TOP/Makefile" ; then + AC_MSG_NOTICE([skipping TOP/Makefile - left untouched]) + else + AC_MSG_NOTICE([skipping TOP/Makefile - not created]) + fi + else + if test -f "$SRC/Makefile" ; then + a=`grep "^VERSION " "$SRC/Makefile"` ; b=`grep "^VERSION " Makefile` + test "$a" != "$b" && rm "$SRC/Makefile" + fi + if test -f "$SRC/Makefile" ; then + echo "$SRC/Makefile : $SRC/Makefile.in" > $tmp/conftemp.mk + echo " []@ echo 'REMOVED,,,' >\$[]@" >> $tmp/conftemp.mk + eval "${MAKE-make} -f $tmp/conftemp.mk 2>/dev/null >/dev/null" + if grep '^REMOVED,,,' "$SRC/Makefile" >/dev/null + then rm $SRC/Makefile ; fi + cp $tmp/conftemp.mk $SRC/makefiles.mk~ ## DEBUGGING + fi + if test ! -f "$SRC/Makefile" ; then + AC_MSG_NOTICE([create TOP/Makefile guessed from local Makefile]) + x='`' ; cat >$tmp/conftemp.sed <<_EOF +/^\$/n +x +/^\$/bS +x +/\\\\\$/{H;d;} +{H;s/.*//;x;} +bM +:S +x +/\\\\\$/{h;d;} +{h;s/.*//;x;} +:M +s/\\(\\n\\) /\\1 /g +/^ /d +/^[[ ]]*[[\\#]]/d +/^VPATH *=/d +s/^srcdir *=.*/srcdir = ./ +s/^top_srcdir *=.*/top_srcdir = ./ +/[[:=]]/!d +/^\\./d +dnl Now handle rules (i.e. lines containing ":" but not " = "). +/ = /b +/ .= /b +/:/!b +s/:.*/:/ +s/ / /g +s/ \\([[a-z]][[a-z-]]*[[a-zA-Z0-9]]\\)\\([[ :]]\\)/ \\1 \\1[]_ALL\\2/g +s/^\\([[a-z]][[a-z-]]*[[a-zA-Z0-9]]\\)\\([[ :]]\\)/\\1 \\1[]_ALL\\2/ +s/ / /g +/^all all[]_ALL[[ :]]/i\\ +all-configured : all[]_ALL +dnl dist-all exists... and would make for dist-all-all +s/ [[a-zA-Z0-9-]]*[]_ALL [[a-zA-Z0-9-]]*[]_ALL[]_ALL//g +/[]_ALL[]_ALL/d +a\\ + @ HOST="\$(HOST)\" \\\\\\ + ; test ".\$\$HOST" = "." && HOST=$x sh $AUX/config.guess $x \\\\\\ + ; BUILD=$x grep "^#### \$\$HOST " Makefile | sed -e 's/.*|//' $x \\\\\\ + ; use=$x basename "\$\@" _ALL $x; n=$x echo \$\$BUILD | wc -w $x \\\\\\ + ; echo "MAKE \$\$HOST : \$\$n * \$\@"; if test "\$\$n" -eq "0" ; then : \\\\\\ + ; BUILD=$x grep "^####.*|" Makefile |tail -1| sed -e 's/.*|//' $x ; fi \\\\\\ + ; test ".\$\$BUILD" = "." && BUILD="." \\\\\\ + ; test "\$\$use" = "\$\@" && BUILD=$x echo "\$\$BUILD" | tail -1 $x \\\\\\ + ; for i in \$\$BUILD ; do test ".\$\$i" = "." && continue \\\\\\ + ; (cd "\$\$i" && test ! -f configure && \$(MAKE) \$\$use) || exit; done +dnl special rule add-on: "dist" copies the tarball to $(PUB). (source tree) +/dist[]_ALL *:/a\\ + @ HOST="\$(HOST)\" \\\\\\ + ; test ".\$\$HOST" = "." && HOST=$x sh $AUX/config.guess $x \\\\\\ + ; BUILD=$x grep "^#### \$\$HOST " Makefile | sed -e 's/.*|//' $x \\\\\\ + ; found=$x echo \$\$BUILD | wc -w $x \\\\\\ + ; echo "MAKE \$\$HOST : \$\$found \$(PACKAGE)-\$(VERSION).tar.*" \\\\\\ + ; if test "\$\$found" -eq "0" ; then : \\\\\\ + ; BUILD=$x grep "^#### .*|" Makefile |tail -1| sed -e 's/.*|//' $x \\\\\\ + ; fi ; for i in \$\$BUILD ; do test ".\$\$i" = "." && continue \\\\\\ + ; for f in \$\$i/\$(PACKAGE)-\$(VERSION).tar.* \\\\\\ + ; do test -f "\$\$f" && mv "\$\$f" \$(PUB). ; done ; break ; done +dnl special rule add-on: "dist-foo" copies all the archives to $(PUB). (source tree) +/dist-[[a-zA-Z0-9]]*[]_ALL *:/a\\ + @ HOST="\$(HOST)\" \\\\\\ + ; test ".\$\$HOST" = "." && HOST=$x sh ./config.guess $x \\\\\\ + ; BUILD=$x grep "^#### \$\$HOST " Makefile | sed -e 's/.*|//' $x \\\\\\ + ; found=$x echo \$\$BUILD | wc -w $x \\\\\\ + ; echo "MAKE \$\$HOST : \$\$found \$(PACKAGE)-\$(VERSION).*" \\\\\\ + ; if test "\$\$found" -eq "0" ; then : \\\\\\ + ; BUILD=$x grep "^#### .*|" Makefile |tail -1| sed -e 's/.*|//' $x \\\\\\ + ; fi ; for i in \$\$BUILD ; do test ".\$\$i" = "." && continue \\\\\\ + ; for f in \$\$i/\$(PACKAGE)-\$(VERSION).* \\\\\\ + ; do test -f "\$\$f" && mv "\$\$f" \$(PUB). ; done ; break ; done +dnl special rule add-on: "distclean" removes all local builddirs completely +/distclean[]_ALL *:/a\\ + @ HOST="\$(HOST)\" \\\\\\ + ; test ".\$\$HOST" = "." && HOST=$x sh $AUX/config.guess $x \\\\\\ + ; BUILD=$x grep "^#### .*|" Makefile | sed -e 's/.*|//' $x \\\\\\ + ; use=$x basename "\$\@" _ALL $x; n=$x echo \$\$BUILD | wc -w $x \\\\\\ + ; echo "MAKE \$\$HOST : \$\$n * \$\@ (all local builds)" \\\\\\ + ; test ".\$\$BUILD" = "." && BUILD="." \\\\\\ + ; for i in \$\$BUILD ; do test ".\$\$i" = "." && continue \\\\\\ + ; echo "# rm -r \$\$i"; done ; echo "# (sleep 3)" ; sleep 3 \\\\\\ + ; for i in \$\$BUILD ; do test ".\$\$i" = "." && continue \\\\\\ + ; echo "\$\$i" | grep "^/" > /dev/null && continue \\\\\\ + ; echo "\$\$i" | grep "^../" > /dev/null && continue \\\\\\ + ; echo "rm -r \$\$i"; (rm -r "\$\$i") ; done ; rm Makefile +_EOF + cp "$tmp/conftemp.sed" "$SRC/makefile.sed~" ## DEBUGGING + $SED -f $tmp/conftemp.sed Makefile >$SRC/Makefile + if test -f "$SRC/m4_ifval([$2],[$2],[END])" ; then + AC_MSG_NOTICE([extend TOP/Makefile with TOP/m4_ifval([$2],[$2],[END])]) + cat $SRC/END >>$SRC/Makefile + fi ; xxxx="####" + echo "$xxxx CONFIGURATIONS FOR TOPLEVEL MAKEFILE: " >>$SRC/Makefile + # sanity check + if grep '^; echo "MAKE ' $SRC/Makefile >/dev/null ; then + AC_MSG_NOTICE([buggy sed found - it deletes tab in "a" text parts]) + $SED -e '/^@ HOST=/s/^/ /' -e '/^; /s/^/ /' $SRC/Makefile \ + >$SRC/Makefile~ + (test -s $SRC/Makefile~ && mv $SRC/Makefile~ $SRC/Makefile) 2>/dev/null + fi + else + xxxx="\\#\\#\\#\\#" + # echo "/^$xxxx *$ax_enable_builddir_host /d" >$tmp/conftemp.sed + echo "s!^$xxxx [[^|]]* | *$SUB *\$!$xxxx ...... $SUB!" >$tmp/conftemp.sed + $SED -f "$tmp/conftemp.sed" "$SRC/Makefile" >$tmp/mkfile.tmp + cp "$tmp/conftemp.sed" "$SRC/makefiles.sed~" ## DEBUGGING + cp "$tmp/mkfile.tmp" "$SRC/makefiles.out~" ## DEBUGGING + if cmp -s "$SRC/Makefile" "$tmp/mkfile.tmp" 2>/dev/null ; then + AC_MSG_NOTICE([keeping TOP/Makefile from earlier configure]) + rm "$tmp/mkfile.tmp" + else + AC_MSG_NOTICE([reusing TOP/Makefile from earlier configure]) + mv "$tmp/mkfile.tmp" "$SRC/Makefile" + fi + fi + AC_MSG_NOTICE([build in $SUB (HOST=$ax_enable_builddir_host)]) + xxxx="####" + echo "$xxxx" "$ax_enable_builddir_host" "|$SUB" >>$SRC/Makefile + fi +popdef([END])dnl +AS_VAR_POPDEF([SED])dnl +AS_VAR_POPDEF([AUX])dnl +AS_VAR_POPDEF([SRC])dnl +AS_VAR_POPDEF([TOP])dnl +AS_VAR_POPDEF([SUB])dnl +],[dnl +ax_enable_builddir_srcdir="$srcdir" # $srcdir +ax_enable_builddir_host="$HOST" # $HOST / $host +ax_enable_builddir_version="$VERSION" # $VERSION +ax_enable_builddir_package="$PACKAGE" # $PACKAGE +ax_enable_builddir_auxdir="$ax_enable_builddir_auxdir" # $AUX +ax_enable_builddir_sed="$ax_enable_builddir_sed" # $SED +ax_enable_builddir="$ax_enable_builddir" # $SUB +])dnl +]) diff --git a/m4/ax_extend_srcdir.m4 b/m4/ax_extend_srcdir.m4 new file mode 100644 index 0000000..40f3787 --- /dev/null +++ b/m4/ax_extend_srcdir.m4 @@ -0,0 +1,86 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_extend_srcdir.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_EXTEND_SRCDIR +# +# DESCRIPTION +# +# The AX_EXTEND_SRCDIR macro extends $srcdir by one path component. +# +# As an example, when working in /home/michael/i3-4.12/build and calling +# ../configure, your $srcdir is "..". After calling AX_EXTEND_SRCDIR, +# $srcdir will be set to "../../i3-4.12". +# +# The result of extending $srcdir is that filenames (e.g. in the output of +# the "backtrace" gdb command) will include one more path component of the +# absolute source path. The additional path component makes it easy for +# users to recognize which files belong to the PACKAGE, and -- provided a +# dist tarball was unpacked -- which version of PACKAGE was used. +# +# As an example, in "backtrace", you will see: +# +# #0 main (argc=1, argv=0x7fffffff1fc8) at ../../i3-4.12/src/main.c:187 +# +# instead of: +# +# #0 main (argc=1, argv=0x7fffffff1fc8) at ../src/main.c:187 +# +# In case your code uses the __FILE__ preprocessor directive to refer to +# the filename of the current source file (e.g. in debug messages), using +# the extended path might be undesirable. For this purpose, +# AX_EXTEND_SRCDIR defines the output variable AX_EXTEND_SRCDIR_CPPFLAGS, +# which can be added to AM_CPPFLAGS in Makefile.am in order to define the +# preprocessor directive STRIPPED__FILE__. As an example, when compiling +# the file "../../i3-4.12/src/main.c", STRIPPED__FILE__ evaluates to +# "main.c". +# +# There are some caveats: When $srcdir is "." (i.e. when ./configure was +# called instead of ../configure in a separate build directory), +# AX_EXTEND_SRCDIR will still extend $srcdir, but the intended effect will +# not be achieved because of the way automake specifies file paths: +# automake defines COMPILE to use "`test -f '$source' || echo +# '\$(srcdir)/'`$source" in order to prefer files in the current directory +# over specifying $srcdir explicitly. +# +# The AX_EXTEND_SRCDIR author is not aware of any way to influence this +# automake behavior. Patches very welcome. +# +# To work around this issue, you can use AX_ENABLE_BUILDDIR i.e. by adding +# the following code to configure.ac: +# +# AX_ENABLE_BUILDDIR +# dnl ... +# AX_EXTEND_SRCDIR +# +# Then also add this bit to Makefile.am (if you wish to use +# STRIPPED__FILE__ in your code): +# +# AM_CPPFLAGS = @AX_EXTEND_SRCDIR_CPPFLAGS@ +# +# LICENSE +# +# Copyright (c) 2016 Michael Stapelberg <michael@i3wm.org> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 3 + +AC_DEFUN([AX_EXTEND_SRCDIR], +[dnl +AS_CASE([$srcdir], + [.|.*|/*], + [ + # pwd -P is specified in IEEE 1003.1 from 2004 + as_dir=`cd "$srcdir" && pwd -P` + as_base=`AS_BASENAME([$as_dir])` + srcdir=${srcdir}/../${as_base} + + AC_SUBST([AX_EXTEND_SRCDIR_CPPFLAGS], ["-DSTRIPPED__FILE__=AS_ESCAPE([\"$$(basename $<)\"])"]) + ]) +])dnl AX_EXTEND_SRCDIR diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4 new file mode 100644 index 0000000..4c4051e --- /dev/null +++ b/m4/ax_pthread.m4 @@ -0,0 +1,485 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_pthread.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) +# +# DESCRIPTION +# +# This macro figures out how to build C programs using POSIX threads. It +# sets the PTHREAD_LIBS output variable to the threads library and linker +# flags, and the PTHREAD_CFLAGS output variable to any special C compiler +# flags that are needed. (The user can also force certain compiler +# flags/libs to be tested by setting these environment variables.) +# +# Also sets PTHREAD_CC to any special C compiler that is needed for +# multi-threaded programs (defaults to the value of CC otherwise). (This +# is necessary on AIX to use the special cc_r compiler alias.) +# +# NOTE: You are assumed to not only compile your program with these flags, +# but also to link with them as well. For example, you might link with +# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS +# +# If you are only building threaded programs, you may wish to use these +# variables in your default LIBS, CFLAGS, and CC: +# +# LIBS="$PTHREAD_LIBS $LIBS" +# CFLAGS="$CFLAGS $PTHREAD_CFLAGS" +# CC="$PTHREAD_CC" +# +# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant +# has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to +# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX). +# +# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the +# PTHREAD_PRIO_INHERIT symbol is defined when compiling with +# PTHREAD_CFLAGS. +# +# ACTION-IF-FOUND is a list of shell commands to run if a threads library +# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it +# is not found. If ACTION-IF-FOUND is not specified, the default action +# will define HAVE_PTHREAD. +# +# Please let the authors know if this macro fails on any platform, or if +# you have any other suggestions or comments. This macro was based on work +# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help +# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by +# Alejandro Forero Cuervo to the autoconf macro repository. We are also +# grateful for the helpful feedback of numerous users. +# +# Updated for Autoconf 2.68 by Daniel Richard G. +# +# LICENSE +# +# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu> +# Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG> +# +# This program is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation, either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 23 + +AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD]) +AC_DEFUN([AX_PTHREAD], [ +AC_REQUIRE([AC_CANONICAL_HOST]) +AC_REQUIRE([AC_PROG_CC]) +AC_REQUIRE([AC_PROG_SED]) +AC_LANG_PUSH([C]) +ax_pthread_ok=no + +# We used to check for pthread.h first, but this fails if pthread.h +# requires special compiler flags (e.g. on Tru64 or Sequent). +# It gets checked for in the link test anyway. + +# First of all, check if the user has set any of the PTHREAD_LIBS, +# etcetera environment variables, and if threads linking works using +# them: +if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then + ax_pthread_save_CC="$CC" + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"]) + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS]) + AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes]) + AC_MSG_RESULT([$ax_pthread_ok]) + if test "x$ax_pthread_ok" = "xno"; then + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" + fi + CC="$ax_pthread_save_CC" + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" +fi + +# We must check for the threads library under a number of different +# names; the ordering is very important because some systems +# (e.g. DEC) have both -lpthread and -lpthreads, where one of the +# libraries is broken (non-POSIX). + +# Create a list of thread flags to try. Items starting with a "-" are +# C compiler flags, and other items are library names, except for "none" +# which indicates that we try without any flags at all, and "pthread-config" +# which is a program returning the flags for the Pth emulation library. + +ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" + +# The ordering *is* (sometimes) important. Some notes on the +# individual items follow: + +# pthreads: AIX (must check this before -lpthread) +# none: in case threads are in libc; should be tried before -Kthread and +# other compiler flags to prevent continual compiler warnings +# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) +# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64 +# (Note: HP C rejects this with "bad form for `-t' option") +# -pthreads: Solaris/gcc (Note: HP C also rejects) +# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it +# doesn't hurt to check since this sometimes defines pthreads and +# -D_REENTRANT too), HP C (must be checked before -lpthread, which +# is present but should not be used directly; and before -mthreads, +# because the compiler interprets this as "-mt" + "-hreads") +# -mthreads: Mingw32/gcc, Lynx/gcc +# pthread: Linux, etcetera +# --thread-safe: KAI C++ +# pthread-config: use pthread-config program (for GNU Pth library) + +case $host_os in + + freebsd*) + + # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) + # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) + + ax_pthread_flags="-kthread lthread $ax_pthread_flags" + ;; + + hpux*) + + # From the cc(1) man page: "[-mt] Sets various -D flags to enable + # multi-threading and also sets -lpthread." + + ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags" + ;; + + openedition*) + + # IBM z/OS requires a feature-test macro to be defined in order to + # enable POSIX threads at all, so give the user a hint if this is + # not set. (We don't define these ourselves, as they can affect + # other portions of the system API in unpredictable ways.) + + AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING], + [ +# if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS) + AX_PTHREAD_ZOS_MISSING +# endif + ], + [AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])]) + ;; + + solaris*) + + # On Solaris (at least, for some versions), libc contains stubbed + # (non-functional) versions of the pthreads routines, so link-based + # tests will erroneously succeed. (N.B.: The stubs are missing + # pthread_cleanup_push, or rather a function called by this macro, + # so we could check for that, but who knows whether they'll stub + # that too in a future libc.) So we'll check first for the + # standard Solaris way of linking pthreads (-mt -lpthread). + + ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags" + ;; +esac + +# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC) + +AS_IF([test "x$GCC" = "xyes"], + [ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"]) + +# The presence of a feature test macro requesting re-entrant function +# definitions is, on some systems, a strong hint that pthreads support is +# correctly enabled + +case $host_os in + darwin* | hpux* | linux* | osf* | solaris*) + ax_pthread_check_macro="_REENTRANT" + ;; + + aix*) + ax_pthread_check_macro="_THREAD_SAFE" + ;; + + *) + ax_pthread_check_macro="--" + ;; +esac +AS_IF([test "x$ax_pthread_check_macro" = "x--"], + [ax_pthread_check_cond=0], + [ax_pthread_check_cond="!defined($ax_pthread_check_macro)"]) + +# Are we compiling with Clang? + +AC_CACHE_CHECK([whether $CC is Clang], + [ax_cv_PTHREAD_CLANG], + [ax_cv_PTHREAD_CLANG=no + # Note that Autoconf sets GCC=yes for Clang as well as GCC + if test "x$GCC" = "xyes"; then + AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG], + [/* Note: Clang 2.7 lacks __clang_[a-z]+__ */ +# if defined(__clang__) && defined(__llvm__) + AX_PTHREAD_CC_IS_CLANG +# endif + ], + [ax_cv_PTHREAD_CLANG=yes]) + fi + ]) +ax_pthread_clang="$ax_cv_PTHREAD_CLANG" + +ax_pthread_clang_warning=no + +# Clang needs special handling, because older versions handle the -pthread +# option in a rather... idiosyncratic way + +if test "x$ax_pthread_clang" = "xyes"; then + + # Clang takes -pthread; it has never supported any other flag + + # (Note 1: This will need to be revisited if a system that Clang + # supports has POSIX threads in a separate library. This tends not + # to be the way of modern systems, but it's conceivable.) + + # (Note 2: On some systems, notably Darwin, -pthread is not needed + # to get POSIX threads support; the API is always present and + # active. We could reasonably leave PTHREAD_CFLAGS empty. But + # -pthread does define _REENTRANT, and while the Darwin headers + # ignore this macro, third-party headers might not.) + + PTHREAD_CFLAGS="-pthread" + PTHREAD_LIBS= + + ax_pthread_ok=yes + + # However, older versions of Clang make a point of warning the user + # that, in an invocation where only linking and no compilation is + # taking place, the -pthread option has no effect ("argument unused + # during compilation"). They expect -pthread to be passed in only + # when source code is being compiled. + # + # Problem is, this is at odds with the way Automake and most other + # C build frameworks function, which is that the same flags used in + # compilation (CFLAGS) are also used in linking. Many systems + # supported by AX_PTHREAD require exactly this for POSIX threads + # support, and in fact it is often not straightforward to specify a + # flag that is used only in the compilation phase and not in + # linking. Such a scenario is extremely rare in practice. + # + # Even though use of the -pthread flag in linking would only print + # a warning, this can be a nuisance for well-run software projects + # that build with -Werror. So if the active version of Clang has + # this misfeature, we search for an option to squash it. + + AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread], + [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG], + [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown + # Create an alternate version of $ac_link that compiles and + # links in two steps (.c -> .o, .o -> exe) instead of one + # (.c -> exe), because the warning occurs only in the second + # step + ax_pthread_save_ac_link="$ac_link" + ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g' + ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"` + ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)" + ax_pthread_save_CFLAGS="$CFLAGS" + for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do + AS_IF([test "x$ax_pthread_try" = "xunknown"], [break]) + CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS" + ac_link="$ax_pthread_save_ac_link" + AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])], + [ac_link="$ax_pthread_2step_ac_link" + AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])], + [break]) + ]) + done + ac_link="$ax_pthread_save_ac_link" + CFLAGS="$ax_pthread_save_CFLAGS" + AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no]) + ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try" + ]) + + case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in + no | unknown) ;; + *) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;; + esac + +fi # $ax_pthread_clang = yes + +if test "x$ax_pthread_ok" = "xno"; then +for ax_pthread_try_flag in $ax_pthread_flags; do + + case $ax_pthread_try_flag in + none) + AC_MSG_CHECKING([whether pthreads work without any flags]) + ;; + + -mt,pthread) + AC_MSG_CHECKING([whether pthreads work with -mt -lpthread]) + PTHREAD_CFLAGS="-mt" + PTHREAD_LIBS="-lpthread" + ;; + + -*) + AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag]) + PTHREAD_CFLAGS="$ax_pthread_try_flag" + ;; + + pthread-config) + AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no]) + AS_IF([test "x$ax_pthread_config" = "xno"], [continue]) + PTHREAD_CFLAGS="`pthread-config --cflags`" + PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" + ;; + + *) + AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag]) + PTHREAD_LIBS="-l$ax_pthread_try_flag" + ;; + esac + + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + + # Check for various functions. We must include pthread.h, + # since some functions may be macros. (On the Sequent, we + # need a special flag -Kthread to make this header compile.) + # We check for pthread_join because it is in -lpthread on IRIX + # while pthread_create is in libc. We check for pthread_attr_init + # due to DEC craziness with -lpthreads. We check for + # pthread_cleanup_push because it is one of the few pthread + # functions on Solaris that doesn't have a non-functional libc stub. + # We try pthread_create on general principles. + + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h> +# if $ax_pthread_check_cond +# error "$ax_pthread_check_macro must be defined" +# endif + static void routine(void *a) { a = 0; } + static void *start_routine(void *a) { return a; }], + [pthread_t th; pthread_attr_t attr; + pthread_create(&th, 0, start_routine, 0); + pthread_join(th, 0); + pthread_attr_init(&attr); + pthread_cleanup_push(routine, 0); + pthread_cleanup_pop(0) /* ; */])], + [ax_pthread_ok=yes], + []) + + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" + + AC_MSG_RESULT([$ax_pthread_ok]) + AS_IF([test "x$ax_pthread_ok" = "xyes"], [break]) + + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" +done +fi + +# Various other checks: +if test "x$ax_pthread_ok" = "xyes"; then + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + + # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. + AC_CACHE_CHECK([for joinable pthread attribute], + [ax_cv_PTHREAD_JOINABLE_ATTR], + [ax_cv_PTHREAD_JOINABLE_ATTR=unknown + for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>], + [int attr = $ax_pthread_attr; return attr /* ; */])], + [ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break], + []) + done + ]) + AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \ + test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \ + test "x$ax_pthread_joinable_attr_defined" != "xyes"], + [AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE], + [$ax_cv_PTHREAD_JOINABLE_ATTR], + [Define to necessary symbol if this constant + uses a non-standard name on your system.]) + ax_pthread_joinable_attr_defined=yes + ]) + + AC_CACHE_CHECK([whether more special flags are required for pthreads], + [ax_cv_PTHREAD_SPECIAL_FLAGS], + [ax_cv_PTHREAD_SPECIAL_FLAGS=no + case $host_os in + solaris*) + ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS" + ;; + esac + ]) + AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \ + test "x$ax_pthread_special_flags_added" != "xyes"], + [PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS" + ax_pthread_special_flags_added=yes]) + + AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT], + [ax_cv_PTHREAD_PRIO_INHERIT], + [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], + [[int i = PTHREAD_PRIO_INHERIT;]])], + [ax_cv_PTHREAD_PRIO_INHERIT=yes], + [ax_cv_PTHREAD_PRIO_INHERIT=no]) + ]) + AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \ + test "x$ax_pthread_prio_inherit_defined" != "xyes"], + [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.]) + ax_pthread_prio_inherit_defined=yes + ]) + + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" + + # More AIX lossage: compile with *_r variant + if test "x$GCC" != "xyes"; then + case $host_os in + aix*) + AS_CASE(["x/$CC"], + [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6], + [#handle absolute path differently from PATH based program lookup + AS_CASE(["x$CC"], + [x/*], + [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])], + [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])]) + ;; + esac + fi +fi + +test -n "$PTHREAD_CC" || PTHREAD_CC="$CC" + +AC_SUBST([PTHREAD_LIBS]) +AC_SUBST([PTHREAD_CFLAGS]) +AC_SUBST([PTHREAD_CC]) + +# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: +if test "x$ax_pthread_ok" = "xyes"; then + ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1]) + : +else + ax_pthread_ok=no + $2 +fi +AC_LANG_POP +])dnl AX_PTHREAD diff --git a/m4/ax_require_defined.m4 b/m4/ax_require_defined.m4 new file mode 100644 index 0000000..cae1111 --- /dev/null +++ b/m4/ax_require_defined.m4 @@ -0,0 +1,37 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_require_defined.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_REQUIRE_DEFINED(MACRO) +# +# DESCRIPTION +# +# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have +# been defined and thus are available for use. This avoids random issues +# where a macro isn't expanded. Instead the configure script emits a +# non-fatal: +# +# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found +# +# It's like AC_REQUIRE except it doesn't expand the required macro. +# +# Here's an example: +# +# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) +# +# LICENSE +# +# Copyright (c) 2014 Mike Frysinger <vapier@gentoo.org> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 1 + +AC_DEFUN([AX_REQUIRE_DEFINED], [dnl + m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])]) +])dnl AX_REQUIRE_DEFINED diff --git a/m4/ax_sanitizers.m4 b/m4/ax_sanitizers.m4 new file mode 100644 index 0000000..836d4af --- /dev/null +++ b/m4/ax_sanitizers.m4 @@ -0,0 +1,130 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_sanitizers.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_SANITIZERS([SANITIZERS], [ENABLED-BY-DEFAULT], [ACTION-SUCCESS]) +# +# DESCRIPTION +# +# Offers users to enable one or more sanitizers (see +# https://github.com/google/sanitizers) with the corresponding +# --enable-<sanitizer>-sanitizer option. +# +# SANITIZERS is a whitespace-separated list of sanitizers to offer via +# --enable-<sanitizer>-sanitizer options, e.g. "address memory" for the +# address sanitizer and the memory sanitizer. If SANITIZERS is not specified, +# all known sanitizers to AX_SANITIZERS will be offered, which at the time of +# writing are "address memory undefined". +# NOTE that SANITIZERS is expanded at autoconf time, not at configure time, +# i.e. you cannot use shell variables in SANITIZERS. +# +# ENABLED-BY-DEFAULT is a whitespace-separated list of sanitizers which +# should be enabled by default, e.g. "memory undefined". Note that not all +# sanitizers can be combined, e.g. memory sanitizer cannot be enabled when +# address sanitizer is already enabled. +# Set ENABLED-BY-DEFAULT to a single whitespace in order to disable all +# sanitizers by default. +# ENABLED-BY-DEFAULT is expanded at configure time, so you can use shell +# variables. +# +# ACTION-SUCCESS allows to specify shell commands to execute on success, i.e. +# when one of the sanitizers was successfully enabled. This is a good place +# to call AC_DEFINE for any precompiler constants you might need to make your +# code play nice with sanitizers. +# +# The variable ax_enabled_sanitizers contains a whitespace-separated list of +# all enabled sanitizers, so that you can print them at the end of configure, +# if you wish. +# +# The additional --enable-sanitizers option allows users to enable/disable +# all sanitizers, effectively overriding ENABLED-BY-DEFAULT. +# +# EXAMPLES +# +# AX_SANITIZERS([address]) +# dnl offer users to enable address sanitizer via --enable-address-sanitizer +# +# is_debug_build=… +# if test "x$is_debug_build" = "xyes"; then +# default_sanitizers="address memory" +# else +# default_sanitizers= +# fi +# AX_SANITIZERS([address memory], [$default_sanitizers]) +# dnl enable address sanitizer and memory sanitizer by default for debug +# dnl builds, e.g. when building from git instead of a dist tarball. +# +# AX_SANITIZERS(, , [ +# AC_DEFINE([SANITIZERS_ENABLED], +# [], +# [At least one sanitizer was enabled])]) +# dnl enable all sanitizers known to AX_SANITIZERS by default and set the +# dnl SANITIZERS_ENABLED precompiler constant. +# +# AX_SANITIZERS(, [ ]) +# dnl provide all sanitizers, but enable none by default. +# +# LICENSE +# +# Copyright (c) 2016 Michael Stapelberg <michael@i3wm.org> +# +# Copying and distribution of this file, with or without modification, +# are permitted in any medium without royalty provided the copyright +# notice and this notice are preserved. This file is offered as-is, +# without any warranty. + +AC_DEFUN([AX_SANITIZERS], +[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) +AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) +AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) +AC_ARG_ENABLE(sanitizers, + AS_HELP_STRING( + [--enable-sanitizers], + [enable all known sanitizers]), + [ax_sanitizers_default=$enableval], + [ax_sanitizers_default=]) +ax_enabled_sanitizers= +m4_foreach_w([mysan], m4_default($1, [address memory undefined]), [ + dnl If ax_sanitizers_default is unset, i.e. the user neither explicitly + dnl enabled nor explicitly disabled all sanitizers, we get the default value + dnl for this sanitizer based on whether it is listed in ENABLED-BY-DEFAULT. + AS_IF([test "x$ax_sanitizers_default" = "x"], [dnl + ax_sanitizer_default= + for mycheck in m4_default([$2], [address memory undefined]); do + AS_IF([test "x$mycheck" = "x[]mysan"], [ax_sanitizer_default=yes]) + done + AS_IF([test "x$ax_sanitizer_default" = "x"], [ax_sanitizer_default=no]) + ], + [ax_sanitizer_default=$ax_sanitizers_default]) + AC_ARG_ENABLE(mysan[]-sanitizer, + AS_HELP_STRING( + [--enable-[]mysan[]-sanitizer], + [enable -fsanitize=mysan]), + [ax_sanitizer_enabled=$enableval], + [ax_sanitizer_enabled=$ax_sanitizer_default]) + +AS_IF([test "x$ax_sanitizer_enabled" = "xyes"], [ +dnl Not using AX_APPEND_COMPILE_FLAGS and AX_APPEND_LINK_FLAGS because they +dnl lack the ability to specify ACTION-SUCCESS. + AX_CHECK_COMPILE_FLAG([-fsanitize=[]mysan], [ + AX_CHECK_LINK_FLAG([-fsanitize=[]mysan], [ + AX_APPEND_FLAG([-fsanitize=[]mysan], []) +dnl If and only if libtool is being used, LDFLAGS needs to contain -Wc,-fsanitize=…. +dnl See e.g. https://sources.debian.net/src/systemd/231-7/configure.ac/?hl=128#L135 +dnl TODO: how can recognize that situation and add -Wc,? + AX_APPEND_FLAG([-fsanitize=[]mysan], [LDFLAGS]) +dnl TODO: add -fPIE -pie for memory + # -fno-omit-frame-pointer results in nicer stack traces in error + # messages, see http://clang.llvm.org/docs/AddressSanitizer.html#usage + AX_CHECK_COMPILE_FLAG([-fno-omit-frame-pointer], [ + AX_APPEND_FLAG([-fno-omit-frame-pointer], [])]) +dnl TODO: at least for clang, we should specify exactly -O1, not -O2 or -O0, so that performance is reasonable but stacktraces are not tampered with (due to inlining), see http://clang.llvm.org/docs/AddressSanitizer.html#usage + m4_default([$3], :) + ax_enabled_sanitizers="[]mysan $ax_enabled_sanitizers" + ]) + ]) +]) +])dnl +])dnl AX_SANITIZERS |