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authorJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
commitc0b89ac5bfb90835ef01573267020e42d4fe070c (patch)
tree733c16852d964d84b7565af4bdaff0bcca901b88 /tiff/m4/acinclude.m4
parent094535c010320967639e8e86f974d878e80baa72 (diff)
Imported Upstream version 1.8.0upstream/1.8.0
Diffstat (limited to 'tiff/m4/acinclude.m4')
-rw-r--r--tiff/m4/acinclude.m4669
1 files changed, 0 insertions, 669 deletions
diff --git a/tiff/m4/acinclude.m4 b/tiff/m4/acinclude.m4
deleted file mode 100644
index a213cde..0000000
--- a/tiff/m4/acinclude.m4
+++ /dev/null
@@ -1,669 +0,0 @@
-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 <vl@iki.fi>
-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 <<EOF
-int main(int argc, char **argv) { return 0; }
-EOF
-
- dnl GCC. -W option has been renamed in -wextra in latest gcc versions.
- if test "$GCC" = "yes"; then
- if test -z "$ansi"; then
- vl_cv_prog_cc_warnings="-Wall -W"
- else
- vl_cv_prog_cc_warnings="-Wall -W -ansi -pedantic"
- fi
-
- dnl Most compilers print some kind of a version string with some command
- dnl line options (often "-V"). The version string should be checked
- dnl before doing a test compilation run with compiler-specific flags.
- dnl This is because some compilers (like the Cray compiler) only
- dnl produce a warning message for unknown flags instead of returning
- dnl an error, resulting in a false positive. Also, compilers may do
- dnl erratic things when invoked with flags meant for a different
- dnl compiler.
-
- dnl Solaris C compiler
- elif $CC -V 2>&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 $vl_cv_prog_cc_warnings"
- else
- vl_cv_prog_cc_warnings="unknown"
- fi
- ])
-])dnl
-
-dnl ---------------------------------------------------------------------------
-dnl Available from the GNU Autoconf Macro Archive at:
-dnl http://autoconf-archive.cryp.to/ax_lang_compiler_ms.html
-dnl ---------------------------------------------------------------------------
-
-dnl @synopsis AX_LANG_COMPILER_MS
-dnl
-dnl Check whether the compiler for the current language is Microsoft.
-dnl
-dnl This macro is modeled after _AC_LANG_COMPILER_GNU in the GNU
-dnl Autoconf implementation.
-dnl
-dnl @category InstalledPackages
-dnl @author Braden McDaniel <braden@endoframe.com>
-dnl @version 2004-11-15
-dnl @license AllPermissive
-
-AC_DEFUN([AX_LANG_COMPILER_MS],
-[AC_CACHE_CHECK([whether we are using the Microsoft _AC_LANG compiler],
- [ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms],
-[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef _MSC_VER
- choke me
-#endif
-]])],
- [ax_compiler_ms=yes],
- [ax_compiler_ms=no])
-ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms=$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 <braden@endoframe.com>
-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} ${ax_save_LIBS}"
- AC_LINK_IFELSE(
- [AC_LANG_PROGRAM([[
-# if HAVE_WINDOWS_H && defined(_WIN32)
-# include <windows.h>
-# endif
-# include <GL/gl.h>]],
- [[glBegin(0)]])],
- [ax_cv_check_gl_libgl="${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} ${GL_LIBS}"
- fi
- AC_LANG_POP(C)
-fi
-
-AC_SUBST([GL_CFLAGS])
-AC_SUBST([GL_LIBS])
-])dnl
-
-dnl ---------------------------------------------------------------------------
-dnl Available from the GNU Autoconf Macro Archive at:
-dnl http://www.gnu.org/software/ac-archive/ax_check_glu.html
-dnl ---------------------------------------------------------------------------
-
-dnl @synopsis AX_CHECK_GLU
-dnl
-dnl Check for GLU. If GLU is found, the required preprocessor and
-dnl linker flags are included in the output variables "GLU_CFLAGS" and
-dnl "GLU_LIBS", respectively. This macro adds the configure option
-dnl "--with-apple-opengl-framework", which users can use to indicate
-dnl that Apple's OpenGL framework should be used on Mac OS X. If
-dnl Apple's OpenGL framework is used, the symbol
-dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If no GLU implementation
-dnl is found, "no_glu" is set to "yes".
-dnl
-dnl @category InstalledPackages
-dnl @author Braden McDaniel <braden@endoframe.com>
-dnl @version 2004-11-15
-dnl @license AllPermissive
-
-AC_DEFUN([AX_CHECK_GLU],
-[AC_REQUIRE([AX_CHECK_GL])dnl
-AC_REQUIRE([AC_PROG_CXX])dnl
-GLU_CFLAGS="${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 <windows.h>
-# endif
-# include <GL/glu.h>]],
- [[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} ${GL_LIBS}"
- fi
-fi
-AC_SUBST([GLU_CFLAGS])
-AC_SUBST([GLU_LIBS])
-])
-
-dnl ---------------------------------------------------------------------------
-dnl Available from the GNU Autoconf Macro Archive at:
-dnl http://www.gnu.org/software/ac-archive/ax_check_glut.html
-dnl ---------------------------------------------------------------------------
-
-dnl @synopsis AX_CHECK_GLUT
-dnl
-dnl Check for GLUT. If GLUT is found, the required compiler and linker
-dnl flags are included in the output variables "GLUT_CFLAGS" and
-dnl "GLUT_LIBS", respectively. This macro adds the configure option
-dnl "--with-apple-opengl-framework", which users can use to indicate
-dnl that Apple's OpenGL framework should be used on Mac OS X. If
-dnl Apple's OpenGL framework is used, the symbol
-dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If GLUT is not found,
-dnl "no_glut" is set to "yes".
-dnl
-dnl @category InstalledPackages
-dnl @author Braden McDaniel <braden@endoframe.com>
-dnl @version 2004-11-15
-dnl @license AllPermissive
-
-AC_DEFUN([AX_CHECK_GLUT],
-[AC_REQUIRE([AX_CHECK_GLU])dnl
-AC_REQUIRE([AC_PATH_XTRA])dnl
-
-if test "X$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} ${ax_save_LIBS}"
- AC_LINK_IFELSE(
- [AC_LANG_PROGRAM([[
-# if HAVE_WINDOWS_H && defined(_WIN32)
-# include <windows.h>
-# endif
-# include <GL/glut.h>]],
- [[glutMainLoop()]])],
- [ax_cv_check_glut_libglut="${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 <stevenj@alum.mit.edu>
-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 $PTHREAD_CFLAGS"
-
- # Check for various functions. We must include pthread.h,
- # since some functions may be macros. (On the Sequent, we
- # need a special flag -Kthread to make this header compile.)
- # We check for pthread_join because it is in -lpthread on IRIX
- # while pthread_create is in libc. We check for pthread_attr_init
- # due to DEC craziness with -lpthreads. We check for
- # pthread_cleanup_push because it is one of the few pthread
- # functions on Solaris that doesn't have a non-functional libc stub.
- # We try pthread_create on general principles.
- AC_TRY_LINK([#include <pthread.h>],
- [pthread_t th; pthread_join(th, 0);
- pthread_attr_init(0); pthread_cleanup_push(0, 0);
- pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
- [acx_pthread_ok=yes])
-
- LIBS="$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 $PTHREAD_CFLAGS"
-
- # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
- AC_MSG_CHECKING([for joinable pthread attribute])
- attr_name=unknown
- for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
- AC_TRY_LINK([#include <pthread.h>], [int attr=$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