+++ /dev/null
-dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])\r
-dnl\r
-dnl This macro figures out how to build C programs using POSIX\r
-dnl threads. It sets the PTHREAD_LIBS output variable to the threads\r
-dnl library and linker flags, and the PTHREAD_CFLAGS output variable\r
-dnl to any special C compiler flags that are needed. (The user can also\r
-dnl force certain compiler flags/libs to be tested by setting these\r
-dnl environment variables.)\r
-dnl\r
-dnl Also sets PTHREAD_CC to any special C compiler that is needed for\r
-dnl multi-threaded programs (defaults to the value of CC otherwise).\r
-dnl (This is necessary on AIX to use the special cc_r compiler alias.)\r
-dnl\r
-dnl If you are only building threads programs, you may wish to\r
-dnl use these variables in your default LIBS, CFLAGS, and CC:\r
-dnl\r
-dnl LIBS="$PTHREAD_LIBS $LIBS"\r
-dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS"\r
-dnl CC="$PTHREAD_CC"\r
-dnl\r
-dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute\r
-dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE\r
-dnl to that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).\r
-dnl\r
-dnl ACTION-IF-FOUND is a list of shell commands to run if a threads\r
-dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands\r
-dnl to run it if it is not found. If ACTION-IF-FOUND is not specified,\r
-dnl the default action will define HAVE_PTHREAD.\r
-dnl\r
-dnl Please let the authors know if this macro fails on any platform,\r
-dnl or if you have any other suggestions or comments. This macro was\r
-dnl based on work by SGJ on autoconf scripts for FFTW (www.fftw.org)\r
-dnl (with help from M. Frigo), as well as ac_pthread and hb_pthread\r
-dnl macros posted by AFC to the autoconf macro repository. We are also\r
-dnl grateful for the helpful feedback of numerous users.\r
-dnl\r
-dnl @author Steven G. Johnson <stevenj@alum.mit.edu> and Alejandro Forero Cuervo <bachue@bachue.com>\r
-\r
-AC_DEFUN([ACX_PTHREAD], [\r
-AC_REQUIRE([AC_CANONICAL_HOST])\r
-AC_LANG_SAVE\r
-AC_LANG_C\r
-acx_pthread_ok=no\r
-\r
-# We used to check for pthread.h first, but this fails if pthread.h\r
-# requires special compiler flags (e.g. on True64 or Sequent).\r
-# It gets checked for in the link test anyway.\r
-\r
-# First of all, check if the user has set any of the PTHREAD_LIBS,\r
-# etcetera environment variables, and if threads linking works using\r
-# them:\r
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then\r
- save_CFLAGS="$CFLAGS"\r
- CFLAGS="$CFLAGS $PTHREAD_CFLAGS"\r
- save_LIBS="$LIBS"\r
- LIBS="$PTHREAD_LIBS $LIBS"\r
- AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])\r
- AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)\r
- AC_MSG_RESULT($acx_pthread_ok)\r
- if test x"$acx_pthread_ok" = xno; then\r
- PTHREAD_LIBS=""\r
- PTHREAD_CFLAGS=""\r
- fi\r
- LIBS="$save_LIBS"\r
- CFLAGS="$save_CFLAGS"\r
-fi\r
-\r
-# We must check for the threads library under a number of different\r
-# names; the ordering is very important because some systems\r
-# (e.g. DEC) have both -lpthread and -lpthreads, where one of the\r
-# libraries is broken (non-POSIX).\r
-\r
-# Create a list of thread flags to try. Items starting with a "-" are\r
-# C compiler flags, and other items are library names, except for "none"\r
-# which indicates that we try without any flags at all.\r
-\r
-acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt"\r
-\r
-# The ordering *is* (sometimes) important. Some notes on the\r
-# individual items follow:\r
-\r
-# pthreads: AIX (must check this before -lpthread)\r
-# none: in case threads are in libc; should be tried before -Kthread and\r
-# other compiler flags to prevent continual compiler warnings\r
-# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)\r
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)\r
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)\r
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)\r
-# -pthreads: Solaris/gcc\r
-# -mthreads: Mingw32/gcc, Lynx/gcc\r
-# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it\r
-# doesn't hurt to check since this sometimes defines pthreads too;\r
-# also defines -D_REENTRANT)\r
-# pthread: Linux, etcetera\r
-# --thread-safe: KAI C++\r
-\r
-case "${host_cpu}-${host_os}" in\r
- *solaris*)\r
-\r
- # On Solaris (at least, for some versions), libc contains stubbed\r
- # (non-functional) versions of the pthreads routines, so link-based\r
- # tests will erroneously succeed. (We need to link with -pthread or\r
- # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather\r
- # a function called by this macro, so we could check for that, but\r
- # who knows whether they'll stub that too in a future libc.) So,\r
- # we'll just look for -pthreads and -lpthread first:\r
-\r
- acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags"\r
- ;;\r
-esac\r
-\r
-if test x"$acx_pthread_ok" = xno; then\r
-for flag in $acx_pthread_flags; do\r
-\r
- case $flag in\r
- none)\r
- AC_MSG_CHECKING([whether pthreads work without any flags])\r
- ;;\r
-\r
- -*)\r
- AC_MSG_CHECKING([whether pthreads work with $flag])\r
- PTHREAD_CFLAGS="$flag"\r
- ;;\r
-\r
- *)\r
- AC_MSG_CHECKING([for the pthreads library -l$flag])\r
- PTHREAD_LIBS="-l$flag"\r
- ;;\r
- esac\r
-\r
- save_LIBS="$LIBS"\r
- save_CFLAGS="$CFLAGS"\r
- LIBS="$PTHREAD_LIBS $LIBS"\r
- CFLAGS="$CFLAGS $PTHREAD_CFLAGS"\r
-\r
- # Check for various functions. We must include pthread.h,\r
- # since some functions may be macros. (On the Sequent, we\r
- # need a special flag -Kthread to make this header compile.)\r
- # We check for pthread_join because it is in -lpthread on IRIX\r
- # while pthread_create is in libc. We check for pthread_attr_init\r
- # due to DEC craziness with -lpthreads. We check for\r
- # pthread_cleanup_push because it is one of the few pthread\r
- # functions on Solaris that doesn't have a non-functional libc stub.\r
- # We try pthread_create on general principles.\r
- AC_TRY_LINK([#include <pthread.h>],\r
- [pthread_t th; pthread_join(th, 0);\r
- pthread_attr_init(0); pthread_cleanup_push(0, 0);\r
- pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],\r
- [acx_pthread_ok=yes])\r
-\r
- LIBS="$save_LIBS"\r
- CFLAGS="$save_CFLAGS"\r
-\r
- AC_MSG_RESULT($acx_pthread_ok)\r
- if test "x$acx_pthread_ok" = xyes; then\r
- break;\r
- fi\r
-\r
- PTHREAD_LIBS=""\r
- PTHREAD_CFLAGS=""\r
-done\r
-fi\r
-\r
-# Various other checks:\r
-if test "x$acx_pthread_ok" = xyes; then\r
- save_LIBS="$LIBS"\r
- LIBS="$PTHREAD_LIBS $LIBS"\r
- save_CFLAGS="$CFLAGS"\r
- CFLAGS="$CFLAGS $PTHREAD_CFLAGS"\r
-\r
- # Detect AIX lossage: threads are created detached by default\r
- # and the JOINABLE attribute has a nonstandard name (UNDETACHED).\r
- AC_MSG_CHECKING([for joinable pthread attribute])\r
- AC_TRY_LINK([#include <pthread.h>],\r
- [int attr=PTHREAD_CREATE_JOINABLE;],\r
- ok=PTHREAD_CREATE_JOINABLE, ok=unknown)\r
- if test x"$ok" = xunknown; then\r
- AC_TRY_LINK([#include <pthread.h>],\r
- [int attr=PTHREAD_CREATE_UNDETACHED;],\r
- ok=PTHREAD_CREATE_UNDETACHED, ok=unknown)\r
- fi\r
- if test x"$ok" != xPTHREAD_CREATE_JOINABLE; then\r
- AC_DEFINE(PTHREAD_CREATE_JOINABLE, $ok,\r
- [Define to the necessary symbol if this constant\r
- uses a non-standard name on your system.])\r
- fi\r
- AC_MSG_RESULT(${ok})\r
- if test x"$ok" = xunknown; then\r
- AC_MSG_WARN([we do not know how to create joinable pthreads])\r
- fi\r
-\r
- AC_MSG_CHECKING([if more special flags are required for pthreads])\r
- flag=no\r
- case "${host_cpu}-${host_os}" in\r
- *-aix* | *-freebsd*) flag="-D_THREAD_SAFE";;\r
- *-osf* | *-hpux*) flag="-D_REENTRANT";;\r
- *solaris*)\r
- if test "$GCC" = "yes"; then\r
- flag="-D_REENTRANT"\r
- else\r
- flag="-mt -D_REENTRANT"\r
- fi\r
- ;;\r
- esac\r
- AC_MSG_RESULT(${flag})\r
- if test "x$flag" != xno; then\r
- PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"\r
- fi\r
-\r
- LIBS="$save_LIBS"\r
- CFLAGS="$save_CFLAGS"\r
-\r
- # More AIX lossage: must compile with cc_r\r
- AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})\r
-else\r
- PTHREAD_CC="$CC"\r
-fi\r
-\r
-AC_SUBST(PTHREAD_LIBS)\r
-AC_SUBST(PTHREAD_CFLAGS)\r
-AC_SUBST(PTHREAD_CC)\r
-\r
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:\r
-if test x"$acx_pthread_ok" = xyes; then\r
- ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])\r
- :\r
-else\r
- acx_pthread_ok=no\r
- $2\r
-fi\r
-AC_LANG_RESTORE\r
-])dnl ACX_PTHREAD\r
projects / shibboleth / xmltooling.git / commitdiff