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dnl Copyright (C) 2010 Vincent Torri <vtorri at univ-evry dot fr>
dnl rwlock code added by Mike Blumenkrantz <mike at zentific dot com>
dnl This code is public domain and can be freely used or copied.
dnl Macro that check if POSIX or Win32 threads library is available or not.
dnl Usage: EFL_CHECK_THREADS(ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
dnl Call AC_SUBST(EFL_PTHREAD_CFLAGS)
dnl Call AC_SUBST(EFL_PTHREAD_LIBS)
dnl Defines EFL_HAVE_POSIX_THREADS or EFL_HAVE_WIN32_THREADS, and EFL_HAVE_THREADS
AC_DEFUN([EFL_CHECK_THREADS],
[
dnl configure option
AC_ARG_ENABLE([posix-threads],
[AC_HELP_STRING([--disable-posix-threads], [enable POSIX threads code @<:@default=auto@:>@])],
[
if test "x${enableval}" = "xyes" ; then
_efl_enable_posix_threads="yes"
else
_efl_enable_posix_threads="no"
fi
],
[_efl_enable_posix_threads="auto"])
AC_MSG_CHECKING([whether to build POSIX threads code])
AC_MSG_RESULT([${_efl_enable_posix_threads}])
AC_ARG_ENABLE([win32-threads],
[AC_HELP_STRING([--disable-win32-threads], [enable Win32 threads code @<:@default=no@:>@])],
[
if test "x${enableval}" = "xyes" ; then
_efl_enable_win32_threads="yes"
else
_efl_enable_win32_threads="no"
fi
],
[_efl_enable_win32_threads="no"])
AC_MSG_CHECKING([whether to build Windows threads code])
AC_MSG_RESULT([${_efl_enable_win32_threads}])
dnl
dnl * no + no
dnl * yes + no : win32: error, other : pthread
dnl * yes + yes : win32 : wthread, other : pthread
dnl * no + yes : win32 : wthread, other : error
if test "x${_efl_enable_posix_threads}" = "xyes" && test "x${_efl_enable_win32_threads}" = "xyes" ; then
case "$host_os" in
mingw*)
_efl_enable_posix_threads=no
;;
*)
_efl_enable_win32_threads=no
;;
esac
fi
if test "x${_efl_enable_win32_threads}" = "xyes" ; then
case "$host_os" in
mingw*)
;;
*)
AC_MSG_ERROR([Win32 threads support requested but non Windows system found.])
;;
esac
fi
if test "x${_efl_enable_posix_threads}" = "xyes" ; then
case "$host_os" in
mingw*)
AC_MSG_ERROR([POSIX threads support requested but Windows system found.])
;;
*)
;;
esac
fi
dnl check if the compiler supports POSIX threads
case "$host_os" in
mingw*)
;;
solaris*)
_efl_threads_cflags="-mt"
_efl_threads_libs="-mt"
;;
*)
_efl_threads_cflags="-pthread"
_efl_threads_libs="-pthread"
;;
esac
_efl_have_posix_threads="no"
_efl_have_win32_threads="no"
if test "x${_efl_enable_posix_threads}" = "xyes" || test "x${_efl_enable_posix_threads}" = "xauto" ; then
SAVE_CFLAGS=${CFLAGS}
CFLAGS="${CFLAGS} ${_efl_threads_cflags}"
SAVE_LIBS=${LIBS}
LIBS="${LIBS} ${_efl_threads_libs}"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
#include <pthread.h>
]],
[[
pthread_t id;
id = pthread_self();
]])],
[_efl_have_posix_threads="yes"],
[_efl_have_posix_threads="no"])
CFLAGS=${SAVE_CFLAGS}
LIBS=${SAVE_LIBS}
fi
AC_MSG_CHECKING([whether system support POSIX threads])
AC_MSG_RESULT([${_efl_have_posix_threads}])
if test "$x{_efl_enable_posix_threads}" = "xyes" && test "x${_efl_have_posix_threads}" = "xno"; then
AC_MSG_ERROR([POSIX threads support requested but not found.])
fi
EFL_PTHREAD_CFLAGS=""
EFL_PTHREAD_LIBS=""
if test "x${_efl_have_posix_threads}" = "xyes" ; then
EFL_PTHREAD_CFLAGS=${_efl_threads_cflags}
EFL_PTHREAD_LIBS=${_efl_threads_libs}
fi
AC_SUBST(EFL_PTHREAD_CFLAGS)
AC_SUBST(EFL_PTHREAD_LIBS)
_efl_enable_on_off_threads="no"
AC_ARG_ENABLE([on-off-threads],
[AC_HELP_STRING([--enable-on-off-threads], [only turn this on if you know what you are doing, and don't complain if the world freeze])],
[_efl_enable_on_off_threads="${enableval}"])
have_on_off_threads="no"
if test "x${_efl_enable_on_off_threads}" = "xyes"; then
have_on_off_threads="yes"
AC_DEFINE([EFL_ON_OFF_THREADS], [1], [make it possible to disable all locks])
fi
AC_MSG_CHECKING([whether to turn on/off threads lock on demand])
AC_MSG_RESULT([${_efl_enable_on_off_threads}])
_efl_enable_debug_threads="no"
AC_ARG_ENABLE([debug-threads],
[AC_HELP_STRING([--enable-debug-threads], [disable assert when you forgot to call eina_threads_init])],
[_efl_enable_debug_threads="${enableval}"])
have_debug_threads="no"
if test "x${_efl_have_posix_threads}" = "xyes" -a "x${_efl_enable_debug_threads}" = "xyes"; then
have_debug_threads="yes"
AC_DEFINE([EFL_DEBUG_THREADS], [1], [Assert when forgot to call eina_threads_init])
fi
if test "x${_efl_have_posix_threads}" = "xyes" ; then
AC_DEFINE([EFL_HAVE_POSIX_THREADS], [1], [Define to mention that POSIX threads are supported])
fi
if test "x${_efl_enable_win32_threads}" = "xyes" ; then
_efl_have_win32_threads="yes"
AC_DEFINE([EFL_HAVE_WIN32_THREADS], [1], [Define to mention that Win32 threads are supported])
fi
if test "x${_efl_have_posix_threads}" = "xyes" || test "x${_efl_have_win32_threads}" = "xyes" ; then
AC_DEFINE([EFL_HAVE_THREADS], [1], [Define to mention that POSIX or Win32 threads are supported])
fi
AS_IF([test "x$_efl_have_posix_threads" = "xyes" || test "x$_efl_have_win32_threads" = "xyes"], [$1], [$2])
])
dnl Usage: EFL_CHECK_SPINLOCK(ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
dnl Defines EFL_HAVE_POSIX_THREADS_SPINLOCK
AC_DEFUN([EFL_CHECK_SPINLOCK],
[
dnl check if the compiler supports pthreads spinlock
_efl_have_posix_threads_spinlock="no"
if test "x${_efl_have_posix_threads}" = "xyes" ; then
SAVE_CFLAGS=${CFLAGS}
CFLAGS="${CFLAGS} ${EFL_PTHREAD_CFLAGS}"
SAVE_LIBS=${LIBS}
LIBS="${LIBS} ${EFL_PTHREAD_LIBS}"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
#include <pthread.h>
]],
[[
pthread_spinlock_t lock;
int res;
res = pthread_spin_init(&lock, PTHREAD_PROCESS_PRIVATE);
]])],
[_efl_have_posix_threads_spinlock="yes"],
[_efl_have_posix_threads_spinlock="no"])
CFLAGS=${SAVE_CFLAGS}
LIBS=${SAVE_LIBS}
fi
AC_MSG_CHECKING([whether to build POSIX threads spinlock code])
AC_MSG_RESULT([${_efl_have_posix_threads_spinlock}])
if test "x${_efl_enable_posix_threads}" = "xyes" && test "x${_efl_have_posix_threads_spinlock}" = "xno" ; then
AC_MSG_WARN([POSIX threads support requested but spinlocks are not supported])
fi
if test "x${_efl_have_posix_threads_spinlock}" = "xyes" ; then
AC_DEFINE([EFL_HAVE_POSIX_THREADS_SPINLOCK], [1], [Define to mention that POSIX threads spinlocks are supported])
fi
AS_IF([test "x$_efl_have_posix_threads_spinlock" = "xyes"], [$1], [$2])
])
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