2010-07-14 23:34:32 -07:00
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dnl Copyright (C) 2010 Vincent Torri <vtorri at univ-evry dot fr>
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dnl That 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(want_pthread_spin[, 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 Define EFL_HAVE_POSIX_THREADS or EFL_HAVE_WIN32_THREADS, and EFL_HAVE_THREADS
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dnl Define EFL_HAVE_POSIX_THREADS_SPINLOCK
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AC_DEFUN([EFL_CHECK_THREADS],
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[
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dnl configure option
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AC_ARG_ENABLE([posix-threads],
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[AC_HELP_STRING([--disable-posix-threads], [enable POSIX threads code @<:@default=auto@:>@])],
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[
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if test "x${enableval}" = "xyes" ; then
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_efl_enable_posix_threads="yes"
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else
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_efl_enable_posix_threads="no"
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fi
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],
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[_efl_enable_posix_threads="auto"])
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AC_MSG_CHECKING([whether to build POSIX threads code])
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AC_MSG_RESULT([${_efl_enable_posix_threads}])
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AC_ARG_ENABLE([win32-threads],
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[AC_HELP_STRING([--disable-win32-threads], [enable Win32 threads code @<:@default=no@:>@])],
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[
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if test "x${enableval}" = "xyes" ; then
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_efl_enable_win32_threads="yes"
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else
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_efl_enable_win32_threads="no"
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fi
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],
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[_efl_enable_win32_threads="no"])
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AC_MSG_CHECKING([whether to build Windows threads code])
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AC_MSG_RESULT([${_efl_enable_win32_threads}])
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dnl
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dnl * no + no
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dnl * yes + no : win32: error, other : pthread
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dnl * yes + yes : win32 : wthread, other : pthread
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dnl * no + yes : win32 : wthread, other : error
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if test "x${_efl_enable_posix_threads}" = "xyes" && test "x${_efl_enable_win32_threads}" = "xyes" ; then
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case "$host_os" in
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mingw*)
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_efl_enable_posix_threads=no
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;;
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*)
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_efl_enable_win32_threads=no
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;;
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esac
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fi
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if test "x${_efl_enable_win32_threads}" = "xyes" ; then
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case "$host_os" in
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mingw*)
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;;
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*)
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AC_MSG_ERROR([Win32 threads support requested but non Windows system found.])
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;;
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esac
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fi
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if test "x${_efl_enable_posix_threads}" = "xyes" ; then
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case "$host_os" in
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mingw*)
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AC_MSG_ERROR([POSIX threads support requested but Windows system found.])
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;;
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*)
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;;
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esac
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fi
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dnl check if the compiler supports POSIX threads
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case "$host_os" in
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mingw*)
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;;
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solaris*)
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2010-11-21 02:54:14 -08:00
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_efl_threads_cflags="-mt"
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_efl_threads_libs="-mt"
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2010-07-14 23:34:32 -07:00
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;;
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*)
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2010-11-21 02:54:14 -08:00
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_efl_threads_cflags="-pthread"
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_efl_threads_libs="-pthread"
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2010-07-14 23:34:32 -07:00
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;;
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esac
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_efl_have_posix_threads="no"
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_efl_have_win32_threads="no"
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if test "x${_efl_enable_posix_threads}" = "xyes" || test "x${_efl_enable_posix_threads}" = "xauto" ; 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} ${_efl_threads_libs}"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <pthread.h>
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]],
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[[
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pthread_t id;
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id = pthread_self();
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]])],
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[_efl_have_posix_threads="yes"],
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[_efl_have_posix_threads="no"])
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CFLAGS=${SAVE_CFLAGS}
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LIBS=${SAVE_LIBS}
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fi
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AC_MSG_CHECKING([whether system support POSIX threads])
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AC_MSG_RESULT([${_efl_have_posix_threads}])
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if test "$x{_efl_enable_posix_threads}" = "xyes" && test "x${_efl_have_posix_threads}" = "xno"; then
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AC_MSG_ERROR([POSIX threads support requested but not found.])
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fi
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EFL_PTHREAD_CFLAGS=""
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EFL_PTHREAD_LIBS=""
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if test "x${_efl_have_posix_threads}" = "xyes" ; then
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2010-11-21 02:54:14 -08:00
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EFL_PTHREAD_CFLAGS=${_efl_threads_cflags}
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EFL_PTHREAD_LIBS=${_efl_threads_libs}
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2010-07-14 23:34:32 -07:00
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fi
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AC_SUBST(EFL_PTHREAD_CFLAGS)
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AC_SUBST(EFL_PTHREAD_LIBS)
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if test "x${_efl_have_posix_threads}" = "xyes" ; then
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AC_DEFINE([EFL_HAVE_POSIX_THREADS], [1], [Define to mention that POSIX threads are supported])
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fi
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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" && test "x$1" = "xyes" ; then
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SAVE_CFLAGS=${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${_efl_enable_posix_threads}" = "xyes" && test "x${_efl_have_posix_threads_spinlock}" = "xno" && test "x$1" = "xyes" ; then
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AC_MSG_WARN([POSIX threads support requested but spinlocks are not supported])
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fi
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if test "x${_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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if test "x${_efl_enable_win32_threads}" = "xyes" ; then
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_efl_have_win32_threads="yes"
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AC_DEFINE([EFL_HAVE_WIN32_THREADS], [1], [Define to mention that Win32 threads are supported])
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fi
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if test "x${_efl_have_posix_threads}" = "xyes" || test "x${_efl_have_win32_threads}" = "xyes" ; then
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AC_DEFINE([EFL_HAVE_THREADS], [1], [Define to mention that POSIX or Win32 threads are supported])
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fi
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AS_IF([test "x$_efl_have_posix_threads" = "xyes" || test "x$_efl_have_win32_threads" = "xyes"], [$2], [$3])
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AS_IF([test "x$_efl_have_posix_threads_spinlock" = "xyes"], [$4], [$5])
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])
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