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#######################################################################
## libthreadar - is a library providing several C++ classes to work with threads
## Copyright (C) 2014-2025 Denis Corbin
##
## This file is part of libthreadar
##
## libthreadar 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 3 of the License, or
## (at your option) any later version.
##
## libhtreadar 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 libthreadar. If not, see <http:##www.gnu.org/licenses/>
##
######
## to contact the author: dar.linux@free.fr
#######################################################################
# Process this file with autoconf to produce a configure script.
AC_PREREQ(2.71)
AC_INIT([LIBTHREADAR], [1.6.1], [])
AC_CONFIG_HEADERS([config.h])
AC_LANG([C++])
AC_CONFIG_SRCDIR([src/tampon.hpp])
AM_INIT_AUTOMAKE([subdir-objects])
# AM_GNU_GETTEXT([external])
# AM_GNU_GETTEXT_VERSION
# AM_ICONV
# have a specific variable for pkgconfig, setting the default value:
AC_SUBST(pkgconfigdir, [${libdir}/pkgconfig])
AC_ARG_WITH([pkgconfigdir],
AS_HELP_STRING([--with-pkgconfigdir=DIR],[defines an alternative directory to install pkconfig files, default is '${libdir}/pkgconfig']),
[
if [ ! -z "$withval" ] ; then
AC_SUBST(pkgconfigdir, $withval)
fi
],
[]
)
# Checks for programs.
AC_PROG_CXX
AC_PROG_CC
LT_INIT
AC_PROG_MAKE_SET
AC_PROG_RANLIB
AC_MSG_CHECKING([for C++ compiler usability])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[ class test { public: int test; }; ])],
[AC_MSG_RESULT(ok)],
[AC_MSG_ERROR([No C++ compiler found])])
AC_MSG_CHECKING([for c++11 support])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[ thread_local static int test = 0; ])
],
[
AC_SUBST(cxxstdflags, [])
AC_MSG_RESULT(yes)
],
[
AC_MSG_RESULT([no])
AC_MSG_CHECKING([for c++ support with -std=c++11 option set])
CXXSTDFLAGS="-std=c++11"
CXXFLAGS="$CXXFLAGS $CXXSTDFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[ thread_local static int test = 0; ])
],
[
AC_SUBST(cxxstdflags, $CXXSTDFLAGS)
AC_MSG_RESULT(yes)
],
[
AC_MSG_RESULT(no)
AC_MSG_ERROR([C++ compiler lack support for c++11 standard])
]
)
])
# Checks for libraries.
AC_CHECK_LIB(pthread, [pthread_mutex_init], [], [])
# Checks for header files.
AC_CHECK_INCLUDES_DEFAULT
AC_PROG_EGREP
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([sys/types.h sys/stat.h fcntl.h string.h errno.h pthread.h signal.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
# Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_HEADER_MAJOR
AC_CHECK_FUNCS([strerror_r])
AC_MSG_CHECKING([for strerror_r flavor])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[extern "C"
{
#if HAVE_STRING_H
#include <string.h>
#endif
} // extern "C"
]],
[[
char *ptr = strerror_r(0, 0, 0);
]])
],
[ AC_DEFINE(HAVE_STRERROR_R_CHAR_PTR, 1, [strerror_r() returns a char *])
AC_MSG_RESULT([GNU specific])
],
[
AC_MSG_RESULT([XSI compliant])
])
AC_MSG_CHECKING([for pthread_barrier_t availability])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[extern "C"
{
#if HAVE_PTHREAD_H
#include <pthread.h>
#endif
} // extern "C"
]],
[[
pthread_barrier_t demo;
(void)pthread_barrier_init(&demo, NULL, 1);
(void)pthread_barrier_destroy(&demo);
]])
],
[
AC_DEFINE(HAVE_PTHREAD_BARRIER_T, 1, [pthread_barrier_t availability])
AC_MSG_RESULT([yes])
],
[
AC_DEFINE(HAVE_PTHREAD_BARRIER_T, 0, [pthread_barrier_t availability])
AC_MSG_RESULT([absent! will emulate barrier using pthead_cond_t])
])
AC_MSG_CHECKING([for sed -r/-E option])
if sed -r -e 's/(c|o)+/\1/g' > /dev/null < /dev/null ; then
local_sed="-r"
AC_MSG_RESULT([GNU sed, using -r option for regex])
else
if sed -E -e 's/(c|o)+/\1/g' > /dev/null < /dev/null ; then
local_sed="-E"
AC_MSG_RESULT([BSD sed, using -E option for regex])
else
local_sed=""
AC_MSG_ERROR([unknown switch to use with sed to support regex])
fi
fi
AC_SUBST(SED_REGEX, [${local_sed}])
AC_ARG_ENABLE( [build-html],
AS_HELP_STRING([--disable-build-html],[don't build programming documentation]),
[ doxygen="no"
groff="no"
],
[ AC_CHECK_PROG(doxygen, doxygen, [yes], [no], [$PATH])
AC_MSG_CHECKING([for doxygen version])
if test "$doxygen" = "yes" ; then
n1=`doxygen --version | cut -d '.' -f 1`
n2=`doxygen --version | cut -d '.' -f 2`
if test $n1 -gt 1 -o $n2 -ge 3 ; then
AC_MSG_RESULT([ >= 1.3])
else
AC_MSG_RESULT([ too old (< 1.3) ignoring doxygen])
doxygen="no"
fi
fi
AC_CHECK_PROG(tmp, man, [yes], [no], [$PATH])
if test "$tmp" = "yes" ; then
AC_CHECK_PROG(groff, groff, [yes], [no], [$PATH])
else
groff = "no";
fi
]
)
threadar_major=`echo AC_PACKAGE_VERSION | [ sed ${local_sed} -n -e 's/^([0-9]+)\..*/\1/p']`
threadar_medium=`echo AC_PACKAGE_VERSION | [ sed ${local_sed} -n -e 's/^[0-9]+\.([0-9]+)\..*/\1/p']`
threadar_minor=`echo AC_PACKAGE_VERSION | [ sed ${local_sed} -n -e 's/^[0-9]+\.[0-9]+\.([0-9]+).*/\1/p' ]`
# for makefiles.in
AC_SUBST(LIBTHREADAR_MAJOR, ${threadar_major})
AC_SUBST(LIBTHREADAR_MEDIUM, ${threadar_medium})
AC_SUBST(LIBTHREADAR_MINOR, ${threadar_minor})
# for macro in source code
AC_DEFINE_UNQUOTED(LIBTHREADAR_MAJOR, ${threadar_major}, [major version of libthreadar])
AC_DEFINE_UNQUOTED(LIBTHREADAR_MEDIUM, ${threadar_medium}, [medium version of libthreadar])
AC_DEFINE_UNQUOTED(LIBTHREADAR_MINOR, ${threadar_minor}, [minor version of libthreadar])
AM_CONDITIONAL([USE_DOXYGEN], [test "$doxygen" = "yes"])
AC_SUBST(DOXYGEN_PROG, [doxygen])
AC_SUBST(THREADAR_VERSION, AC_PACKAGE_VERSION)
# defaults
AC_PREFIX_DEFAULT(/usr/local)
# hack from libtool mailing-list to know from source point of view whether we are compiling for dynamic or static way
AC_CONFIG_COMMANDS([hack-libtool], [
sed 's,^pic_flag=,pic_flag=" -D__DYNAMIC__ ",' libtool > libtoolT \
&& mv -f libtoolT libtool && chmod 755 libtool
])
AC_CONFIG_FILES([Makefile src/Makefile src/libthreadar.pc.tmpl doc/Makefile doc/examples/Makefile])
AC_OUTPUT
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