dnl --------------------------------------------------------------------------- dnl Message output dnl --------------------------------------------------------------------------- AC_DEFUN([LOC_MSG],[echo "$1"]) dnl --------------------------------------------------------------------------- dnl Available from the GNU Autoconf Macro Archive at: dnl http://www.gnu.org/software/ac-archive/vl_prog_cc_warnings.html dnl --------------------------------------------------------------------------- dnl @synopsis VL_PROG_CC_WARNINGS([ANSI]) dnl dnl Enables a reasonable set of warnings for the C compiler. dnl Optionally, if the first argument is nonempty, turns on flags which dnl enforce and/or enable proper ANSI C if such are known with the dnl compiler used. dnl dnl Currently this macro knows about GCC, Solaris C compiler, Digital dnl Unix C compiler, C for AIX Compiler, HP-UX C compiler, IRIX C dnl compiler, NEC SX-5 (Super-UX 10) C compiler, and Cray J90 (Unicos dnl 10.0.0.8) C compiler. dnl dnl @category C dnl @author Ville Laurikari dnl @version 2002-04-04 dnl @license AllPermissive AC_DEFUN([VL_PROG_CC_WARNINGS], [ ansi=$1 if test -z "$ansi"; then msg="for C compiler warning flags" else msg="for C compiler warning and ANSI conformance flags" fi AC_CACHE_CHECK($msg, vl_cv_prog_cc_warnings, [ if test -n "$CC"; then cat > conftest.c <&1 | grep -i "WorkShop" > /dev/null 2>&1 && $CC -c -v -Xc conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-v" else vl_cv_prog_cc_warnings="-v -Xc" fi dnl Digital Unix C compiler elif $CC -V 2>&1 | grep -i "Digital UNIX Compiler" > /dev/null 2>&1 && $CC -c -verbose -w0 -warnprotos -std1 conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-verbose -w0 -warnprotos" else vl_cv_prog_cc_warnings="-verbose -w0 -warnprotos -std1" fi dnl C for AIX Compiler elif $CC 2>&1 | grep -i "C for AIX Compiler" > /dev/null 2>&1 && $CC -c -qlanglvl=ansi -qinfo=all conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" else vl_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd -qlanglvl=ansi" fi dnl IRIX C compiler elif $CC -version 2>&1 | grep -i "MIPSpro Compilers" > /dev/null 2>&1 && $CC -c -fullwarn -ansi -ansiE conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-fullwarn" else vl_cv_prog_cc_warnings="-fullwarn -ansi -ansiE" fi dnl HP-UX C compiler elif what $CC 2>&1 | grep -i "HP C Compiler" > /dev/null 2>&1 && $CC -c -Aa +w1 conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="+w1" else vl_cv_prog_cc_warnings="+w1 -Aa" fi dnl The NEC SX-5 (Super-UX 10) C compiler elif $CC -V 2>&1 | grep "/SX" > /dev/null 2>&1 && $CC -c -pvctl[,]fullmsg -Xc conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-pvctl[,]fullmsg" else vl_cv_prog_cc_warnings="-pvctl[,]fullmsg -Xc" fi dnl The Cray C compiler (Unicos) elif $CC -V 2>&1 | grep -i "Cray" > /dev/null 2>&1 && $CC -c -h msglevel 2 conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-h msglevel 2" else vl_cv_prog_cc_warnings="-h msglevel 2 -h conform" fi fi rm -f conftest.* fi if test -n "$vl_cv_prog_cc_warnings"; then CFLAGS="$CFLAGS $vl_cv_prog_cc_warnings" else vl_cv_prog_cc_warnings="unknown" fi ]) ])dnl dnl --------------------------------------------------------------------------- dnl Available from the GNU Autoconf Macro Archive at: dnl http://autoconf-archive.cryp.to/ax_lang_compiler_ms.html dnl --------------------------------------------------------------------------- dnl @synopsis AX_LANG_COMPILER_MS dnl dnl Check whether the compiler for the current language is Microsoft. dnl dnl This macro is modeled after _AC_LANG_COMPILER_GNU in the GNU dnl Autoconf implementation. dnl dnl @category InstalledPackages dnl @author Braden McDaniel dnl @version 2004-11-15 dnl @license AllPermissive AC_DEFUN([AX_LANG_COMPILER_MS], [AC_CACHE_CHECK([whether we are using the Microsoft _AC_LANG compiler], [ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef _MSC_VER choke me #endif ]])], [ax_compiler_ms=yes], [ax_compiler_ms=no]) ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms=$ax_compiler_ms ])]) dnl --------------------------------------------------------------------------- dnl Available from the GNU Autoconf Macro Archive at: dnl http://www.gnu.org/software/ac-archive/ax_check_gl.html dnl --------------------------------------------------------------------------- dnl @synopsis AX_CHECK_GL dnl dnl Check for an OpenGL implementation. If GL is found, the required dnl compiler and linker flags are included in the output variables dnl "GL_CFLAGS" and "GL_LIBS", respectively. This macro adds the dnl configure option "--with-apple-opengl-framework", which users can dnl use to indicate that Apple's OpenGL framework should be used on Mac dnl OS X. If Apple's OpenGL framework is used, the symbol dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If no GL implementation dnl is found, "no_gl" is set to "yes". dnl dnl @category InstalledPackages dnl @author Braden McDaniel dnl @version 2004-11-15 dnl @license AllPermissive AC_DEFUN([AX_CHECK_GL], [AC_REQUIRE([AC_PATH_X])dnl AC_REQUIRE([ACX_PTHREAD])dnl # # There isn't a reliable way to know we should use the Apple OpenGL framework # without a configure option. A Mac OS X user may have installed an # alternative GL implementation (e.g., Mesa), which may or may not depend on X. # AC_ARG_WITH([apple-opengl-framework], [AC_HELP_STRING([--with-apple-opengl-framework], [use Apple OpenGL framework (Mac OS X only)])]) if test "X$with_apple_opengl_framework" = "Xyes"; then AC_DEFINE([HAVE_APPLE_OPENGL_FRAMEWORK], [1], [Use the Apple OpenGL framework.]) GL_LIBS="-framework OpenGL" else AC_LANG_PUSH(C) AX_LANG_COMPILER_MS if test X$ax_compiler_ms = Xno; then GL_CFLAGS="${PTHREAD_CFLAGS}" GL_LIBS="${PTHREAD_LIBS} -lm" fi # # Use x_includes and x_libraries if they have been set (presumably by # AC_PATH_X). # if test "X$no_x" != "Xyes"; then if test -n "$x_includes"; then GL_CFLAGS="-I${x_includes} ${GL_CFLAGS}" fi if test -n "$x_libraries"; then GL_LIBS="-L${x_libraries} -lX11 ${GL_LIBS}" fi fi AC_CHECK_HEADERS([windows.h]) AC_CACHE_CHECK([for OpenGL library], [ax_cv_check_gl_libgl], [ax_cv_check_gl_libgl="no" ax_save_CPPFLAGS="${CPPFLAGS}" CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" ax_save_LIBS="${LIBS}" LIBS="" ax_check_libs="-lopengl32 -lGL" for ax_lib in ${ax_check_libs}; do if test X$ax_compiler_ms = Xyes; then ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` else ax_try_lib="${ax_lib}" fi LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" AC_LINK_IFELSE( [AC_LANG_PROGRAM([[ # if HAVE_WINDOWS_H && defined(_WIN32) # include # endif # include ]], [[glBegin(0)]])], [ax_cv_check_gl_libgl="${ax_try_lib}"; break]) done LIBS=${ax_save_LIBS} CPPFLAGS=${ax_save_CPPFLAGS}]) if test "X${ax_cv_check_gl_libgl}" = "Xno"; then no_gl="yes" GL_CFLAGS="" GL_LIBS="" else GL_LIBS="${ax_cv_check_gl_libgl} ${GL_LIBS}" fi AC_LANG_POP(C) fi AC_SUBST([GL_CFLAGS]) AC_SUBST([GL_LIBS]) ])dnl dnl --------------------------------------------------------------------------- dnl Available from the GNU Autoconf Macro Archive at: dnl http://www.gnu.org/software/ac-archive/ax_check_glu.html dnl --------------------------------------------------------------------------- dnl @synopsis AX_CHECK_GLU dnl dnl Check for GLU. If GLU is found, the required preprocessor and dnl linker flags are included in the output variables "GLU_CFLAGS" and dnl "GLU_LIBS", respectively. This macro adds the configure option dnl "--with-apple-opengl-framework", which users can use to indicate dnl that Apple's OpenGL framework should be used on Mac OS X. If dnl Apple's OpenGL framework is used, the symbol dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If no GLU implementation dnl is found, "no_glu" is set to "yes". dnl dnl @category InstalledPackages dnl @author Braden McDaniel dnl @version 2004-11-15 dnl @license AllPermissive AC_DEFUN([AX_CHECK_GLU], [AC_REQUIRE([AX_CHECK_GL])dnl AC_REQUIRE([AC_PROG_CXX])dnl GLU_CFLAGS="${GL_CFLAGS}" if test "X${with_apple_opengl_framework}" != "Xyes"; then AC_CACHE_CHECK([for OpenGL Utility library], [ax_cv_check_glu_libglu], [ax_cv_check_glu_libglu="no" ax_save_CPPFLAGS="${CPPFLAGS}" CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" ax_save_LIBS="${LIBS}" LIBS="" ax_check_libs="-lglu32 -lGLU" for ax_lib in ${ax_check_libs}; do if test X$ax_compiler_ms = Xyes; then ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` else ax_try_lib="${ax_lib}" fi LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" # # libGLU typically links with libstdc++ on POSIX platforms. However, # setting the language to C++ means that test program source is named # "conftest.cc"; and Microsoft cl doesn't know what to do with such a # file. # AC_LANG_PUSH([C++]) if test X$ax_compiler_ms = Xyes; then AC_LANG_PUSH([C]) fi AC_LINK_IFELSE( [AC_LANG_PROGRAM([[ # if HAVE_WINDOWS_H && defined(_WIN32) # include # endif # include ]], [[gluBeginCurve(0)]])], [ax_cv_check_glu_libglu="${ax_try_lib}"; break]) if test X$ax_compiler_ms = Xyes; then AC_LANG_POP([C]) fi AC_LANG_POP([C++]) done LIBS=${ax_save_LIBS} CPPFLAGS=${ax_save_CPPFLAGS}]) if test "X${ax_cv_check_glu_libglu}" = "Xno"; then no_glu="yes" GLU_CFLAGS="" GLU_LIBS="" else GLU_LIBS="${ax_cv_check_glu_libglu} ${GL_LIBS}" fi fi AC_SUBST([GLU_CFLAGS]) AC_SUBST([GLU_LIBS]) ]) dnl --------------------------------------------------------------------------- dnl Available from the GNU Autoconf Macro Archive at: dnl http://www.gnu.org/software/ac-archive/ax_check_glut.html dnl --------------------------------------------------------------------------- dnl @synopsis AX_CHECK_GLUT dnl dnl Check for GLUT. If GLUT is found, the required compiler and linker dnl flags are included in the output variables "GLUT_CFLAGS" and dnl "GLUT_LIBS", respectively. This macro adds the configure option dnl "--with-apple-opengl-framework", which users can use to indicate dnl that Apple's OpenGL framework should be used on Mac OS X. If dnl Apple's OpenGL framework is used, the symbol dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If GLUT is not found, dnl "no_glut" is set to "yes". dnl dnl @category InstalledPackages dnl @author Braden McDaniel dnl @version 2004-11-15 dnl @license AllPermissive AC_DEFUN([AX_CHECK_GLUT], [AC_REQUIRE([AX_CHECK_GLU])dnl AC_REQUIRE([AC_PATH_XTRA])dnl if test "X$with_apple_opengl_framework" = "Xyes"; then GLUT_CFLAGS="${GLU_CFLAGS}" GLUT_LIBS="-framework GLUT -lobjc ${GL_LIBS}" else GLUT_CFLAGS=${GLU_CFLAGS} GLUT_LIBS=${GLU_LIBS} # # If X is present, assume GLUT depends on it. # if test "X${no_x}" != "Xyes"; then GLUT_LIBS="${X_PRE_LIBS} -lXmu -lXi ${X_EXTRA_LIBS} ${GLUT_LIBS}" fi AC_LANG_PUSH(C) ax_save_CPPFLAGS="${CPPFLAGS}" CPPFLAGS="${GLUT_CFLAGS} ${CPPFLAGS}" AC_CACHE_CHECK([for GLUT library], [ax_cv_check_glut_libglut], [ax_cv_check_glut_libglut="no" ax_save_LIBS="${LIBS}" LIBS="" ax_check_libs="-lglut32 -lglut" for ax_lib in ${ax_check_libs}; do if test X$ax_compiler_ms = Xyes; then ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` else ax_try_lib="${ax_lib}" fi LIBS="${ax_try_lib} ${GLUT_LIBS} ${ax_save_LIBS}" AC_LINK_IFELSE( [AC_LANG_PROGRAM([[ # if HAVE_WINDOWS_H && defined(_WIN32) # include # endif # include ]], [[glutMainLoop()]])], [ax_cv_check_glut_libglut="${ax_try_lib}"; break]) done LIBS=${ax_save_LIBS} ]) CPPFLAGS="${ax_save_CPPFLAGS}" AC_LANG_POP(C) if test "X${ax_cv_check_glut_libglut}" = "Xno"; then no_glut="yes" GLUT_CFLAGS="" GLUT_LIBS="" else GLUT_LIBS="${ax_cv_check_glut_libglut} ${GLUT_LIBS}" fi fi AC_SUBST([GLUT_CFLAGS]) AC_SUBST([GLUT_LIBS]) ])dnl dnl --------------------------------------------------------------------------- dnl Available from the GNU Autoconf Macro Archive at: dnl http://www.gnu.org/software/ac-archive/acx_pthread.html dnl --------------------------------------------------------------------------- dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) dnl dnl This macro figures out how to build C programs using POSIX threads. dnl It sets the PTHREAD_LIBS output variable to the threads library and dnl linker flags, and the PTHREAD_CFLAGS output variable to any special dnl C compiler flags that are needed. (The user can also force certain dnl compiler flags/libs to be tested by setting these environment dnl variables.) dnl dnl Also sets PTHREAD_CC to any special C compiler that is needed for dnl multi-threaded programs (defaults to the value of CC otherwise). dnl (This is necessary on AIX to use the special cc_r compiler alias.) dnl dnl NOTE: You are assumed to not only compile your program with these dnl flags, but also link it with them as well. e.g. you should link dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS dnl $LIBS dnl dnl If you are only building threads programs, you may wish to use dnl these variables in your default LIBS, CFLAGS, and CC: dnl dnl LIBS="$PTHREAD_LIBS $LIBS" dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS" dnl CC="$PTHREAD_CC" dnl dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX). dnl dnl ACTION-IF-FOUND is a list of shell commands to run if a threads dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the dnl default action will define HAVE_PTHREAD. dnl dnl Please let the authors know if this macro fails on any platform, or dnl if you have any other suggestions or comments. This macro was based dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros dnl posted by Alejandro Forero Cuervo to the autoconf macro repository. dnl We are also grateful for the helpful feedback of numerous users. dnl dnl @category InstalledPackages dnl @author Steven G. Johnson dnl @version 2005-01-14 dnl @license GPLWithACException AC_DEFUN([ACX_PTHREAD], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_LANG_SAVE AC_LANG_C acx_pthread_ok=no # We used to check for pthread.h first, but this fails if pthread.h # requires special compiler flags (e.g. on True64 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"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" save_LIBS="$LIBS" LIBS="$PTHREAD_LIBS $LIBS" AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS]) AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes) AC_MSG_RESULT($acx_pthread_ok) if test x"$acx_pthread_ok" = xno; then PTHREAD_LIBS="" PTHREAD_CFLAGS="" fi LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" fi # We must check for the threads library under a number of different # names; the ordering is very important because some systems # (e.g. DEC) have both -lpthread and -lpthreads, where one of the # libraries is broken (non-POSIX). # Create a list of thread flags to try. Items starting with a "-" are # C compiler flags, and other items are library names, except for "none" # which indicates that we try without any flags at all, and "pthread-config" # which is a program returning the flags for the Pth emulation library. acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" # The ordering *is* (sometimes) important. Some notes on the # individual items follow: # pthreads: AIX (must check this before -lpthread) # none: in case threads are in libc; should be tried before -Kthread and # other compiler flags to prevent continual compiler warnings # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) # -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads) # -pthreads: Solaris/gcc # -mthreads: Mingw32/gcc, Lynx/gcc # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it # doesn't hurt to check since this sometimes defines pthreads too; # also defines -D_REENTRANT) # pthread: Linux, etcetera # --thread-safe: KAI C++ # pthread-config: use pthread-config program (for GNU Pth library) case "${host_cpu}-${host_os}" in *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. (We need to link with -pthread or # -lpthread.) (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 just look for -pthreads and -lpthread first: acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags" ;; esac if test x"$acx_pthread_ok" = xno; then for flag in $acx_pthread_flags; do case $flag in none) AC_MSG_CHECKING([whether pthreads work without any flags]) ;; -*) AC_MSG_CHECKING([whether pthreads work with $flag]) PTHREAD_CFLAGS="$flag" ;; pthread-config) AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no) if test x"$acx_pthread_config" = xno; then continue; fi PTHREAD_CFLAGS="`pthread-config --cflags`" PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" ;; *) AC_MSG_CHECKING([for the pthreads library -l$flag]) PTHREAD_LIBS="-l$flag" ;; esac save_LIBS="$LIBS" save_CFLAGS="$CFLAGS" LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" # Check for various functions. We must include pthread.h, # since some functions may be macros. (On the Sequent, we # need a special flag -Kthread to make this header compile.) # We check for pthread_join because it is in -lpthread on IRIX # while pthread_create is in libc. We check for pthread_attr_init # due to DEC craziness with -lpthreads. We check for # pthread_cleanup_push because it is one of the few pthread # functions on Solaris that doesn't have a non-functional libc stub. # We try pthread_create on general principles. AC_TRY_LINK([#include ], [pthread_t th; pthread_join(th, 0); pthread_attr_init(0); pthread_cleanup_push(0, 0); pthread_create(0,0,0,0); pthread_cleanup_pop(0); ], [acx_pthread_ok=yes]) LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" AC_MSG_RESULT($acx_pthread_ok) if test "x$acx_pthread_ok" = xyes; then break; fi PTHREAD_LIBS="" PTHREAD_CFLAGS="" done fi # Various other checks: if test "x$acx_pthread_ok" = xyes; then save_LIBS="$LIBS" LIBS="$PTHREAD_LIBS $LIBS" save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. AC_MSG_CHECKING([for joinable pthread attribute]) attr_name=unknown for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do AC_TRY_LINK([#include ], [int attr=$attr;], [attr_name=$attr; break]) done AC_MSG_RESULT($attr_name) if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name, [Define to necessary symbol if this constant uses a non-standard name on your system.]) fi AC_MSG_CHECKING([if more special flags are required for pthreads]) flag=no case "${host_cpu}-${host_os}" in *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";; *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";; esac AC_MSG_RESULT(${flag}) if test "x$flag" != xno; then PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" fi LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" # More AIX lossage: must compile with cc_r AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC}) else PTHREAD_CC="$CC" fi AC_SUBST(PTHREAD_LIBS) AC_SUBST(PTHREAD_CFLAGS) AC_SUBST(PTHREAD_CC) # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: if test x"$acx_pthread_ok" = xyes; then ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1]) : else acx_pthread_ok=no $2 fi AC_LANG_RESTORE ])dnl ACX_PTHREAD