144 lines
4.1 KiB
Plaintext
144 lines
4.1 KiB
Plaintext
dnl Copyright (C) 2010 Vincent Torri <vtorri at univ-evry dot fr>
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dnl rwlock code added by Mike Blumenkrantz <mike at zentific dot com>
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dnl This code is public domain and can be freely used or copied.
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dnl Macro that check if POSIX or Win32 threads library is available or not.
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dnl Usage: EFL_CHECK_THREADS(ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
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dnl Call AC_SUBST(EFL_PTHREAD_CFLAGS)
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dnl Call AC_SUBST(EFL_PTHREAD_LIBS)
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dnl Defines EFL_HAVE_POSIX_THREADS or EFL_HAVE_WIN32_THREADS, and EFL_HAVE_THREADS
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AC_DEFUN([EFL_CHECK_THREADS],
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[
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dnl Generic thread detection
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EFL_PTHREAD_CFLAGS=""
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EFL_PTHREAD_LIBS=""
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_efl_enable_posix_threads="no"
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_efl_have_posix_threads="no"
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_efl_have_win32_threads="no"
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case "$host_os" in
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mingw*)
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_efl_have_win32_threads="yes"
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efl_have_setaffinity="yes"
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AC_DEFINE([EFL_HAVE_WIN32_THREADS], [1], [Define to mention that Win32 threads are supported])
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AC_DEFINE([EFL_HAVE_THREADS], [1], [Define to mention that POSIX or Win32 threads are supported])
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;;
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*)
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_efl_enable_posix_threads="yes"
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_efl_threads_cflags="-D_REENTRANT"
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_efl_threads_libs="-lpthread"
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;;
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esac
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dnl check if the compiler supports POSIX threads
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if test "x${_efl_enable_posix_threads}" = "xyes" ; then
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SAVE_CFLAGS=${CFLAGS}
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CFLAGS="${CFLAGS} ${_efl_threads_cflags}"
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SAVE_LIBS=${LIBS}
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LIBS="${LIBS} ${_efl_threads_libs}"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <pthread.h>
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]],
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[[
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pthread_t id;
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id = pthread_self();
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]])],
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[
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_efl_have_posix_threads="yes"
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AC_DEFINE([EFL_HAVE_POSIX_THREADS], [1], [Define to mention that POSIX threads are supported])
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AC_DEFINE([EFL_HAVE_THREADS], [1], [Define to mention that POSIX or Win32 threads are supported])
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EFL_PTHREAD_CFLAGS=${_efl_threads_cflags}
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EFL_PTHREAD_LIBS=${_efl_threads_libs}
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],
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[_efl_have_posix_threads="no"])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <pthread.h>
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]],
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[[
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pthread_barrier_t barrier;
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pthread_barrier_init(&barrier, NULL, 1);
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]])],
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[efl_have_pthread_barrier="yes"],
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[efl_have_pthread_barrier="no"])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <stdlib.h>
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#include <pthread.h>
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#include <sched.h>
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]],
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[[
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pthread_attr_setaffinity_np(NULL, 0, NULL);
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]])],
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[efl_have_setaffinity="yes"],
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[efl_have_setaffinity="no"])
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CFLAGS=${SAVE_CFLAGS}
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LIBS=${SAVE_LIBS}
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fi
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AC_MSG_CHECKING([which threads API is used])
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if test "x${_efl_have_posix_threads}" = "xyes" ; then
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efl_have_threads="POSIX"
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else
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if test "x${_efl_have_win32_threads}" = "xyes" ; then
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efl_have_threads="Windows"
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efl_have_pthread_barrier="no"
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else
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efl_have_threads="no"
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efl_have_pthread_barrier="no"
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fi
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fi
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AC_MSG_RESULT([${efl_have_threads}])
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AC_SUBST(EFL_PTHREAD_CFLAGS)
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AC_SUBST(EFL_PTHREAD_LIBS)
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dnl check if the compiler supports pthreads spinlock
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efl_have_posix_threads_spinlock="no"
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if test "x${_efl_have_posix_threads}" = "xyes" ; then
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SAVE_CFLAGS=${CFLAGS}
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CFLAGS="${CFLAGS} ${EFL_PTHREAD_CFLAGS}"
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SAVE_LIBS=${LIBS}
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LIBS="${LIBS} ${EFL_PTHREAD_LIBS}"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <pthread.h>
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]],
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[[
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pthread_spinlock_t lock;
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int res;
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res = pthread_spin_init(&lock, PTHREAD_PROCESS_PRIVATE);
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]])],
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[efl_have_posix_threads_spinlock="yes"],
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[efl_have_posix_threads_spinlock="no"])
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CFLAGS=${SAVE_CFLAGS}
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LIBS=${SAVE_LIBS}
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fi
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AC_MSG_CHECKING([whether to build POSIX threads spinlock code])
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AC_MSG_RESULT([${efl_have_posix_threads_spinlock}])
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if test "x${efl_have_posix_threads_spinlock}" = "xyes" ; then
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AC_DEFINE([EFL_HAVE_POSIX_THREADS_SPINLOCK], [1], [Define to mention that POSIX threads spinlocks are supported])
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fi
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AS_IF([test "x$_efl_have_posix_threads" = "xyes" || test "x$_efl_have_win32_threads" = "xyes"],
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[$1],
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[m4_if([$2], [$2], [AC_MSG_ERROR([Threads are required.])])])
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])
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