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dnl Copyright (C) 2010 Vincent Torri <vtorri at univ-evry dot fr>
dnl That code is public domain and can be freely used or copied.
dnl Macro that check if several pthread library is available or not.
dnl Usage: EFL_CHECK_PTHREAD(want_pthread_spin[, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl Call AC_SUBST(EFL_PTHREAD_CFLAGS)
dnl Call AC_SUBST(EFL_PTHREAD_LIBS)
dnl Define EFL_HAVE_PTHREAD
dnl Define EFL_HAVE_PTHREAD_SPINLOCK
AC_DEFUN([EFL_CHECK_PTHREAD],
[
dnl configure option
AC_ARG_ENABLE([pthread],
[AC_HELP_STRING([--disable-pthread], [enable POSIX threads code @<:@default=auto@:>@])],
[
if test "x${enableval}" = "xyes" ; then
_efl_enable_pthread="yes"
else
_efl_enable_pthread="no"
fi
],
[_efl_enable_pthread="auto"])
AC_MSG_CHECKING([whether to build POSIX threads code])
AC_MSG_RESULT([${_efl_enable_pthread}])
dnl check if the compiler supports pthreads
_efl_have_pthread="no"
if test "x${_efl_enable_pthread}" = "xyes" || test "x${_efl_enable_pthread}" = "xauto" ; then
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#include <pthread.h>
]],
[[
pthread_t id;
id = pthread_self();
]])],
[_efl_have_pthread="yes"],
[_efl_have_pthread="no"])
fi
AC_MSG_CHECKING([whether system support POSIX threads])
AC_MSG_RESULT([${_efl_have_pthread}])
if test "$x{_efl_enable_pthread}" = "xyes" && test "x${_efl_have_pthread}" = "xno"; then
AC_MSG_ERROR([pthread support requested but not found.])
fi
if test "x${_efl_have_pthread}" = "xyes" ; then
case "$host_os" in
mingw*)
EFL_PTHREAD_CFLAGS=""
EFL_PTHREAD_LIBS="-lpthreadGC2"
;;
solaris*)
EFL_PTHREAD_CFLAGS="-mt"
EFL_PTHREAD_LIBS="-mt"
;;
*)
EFL_PTHREAD_CFLAGS="-pthread"
EFL_PTHREAD_LIBS="-pthread"
;;
esac
fi
AC_SUBST(EFL_PTHREAD_CFLAGS)
AC_SUBST(EFL_PTHREAD_LIBS)
if test "x${_efl_have_pthread}" = "xyes" ; then
AC_DEFINE(EFL_HAVE_PTHREAD, 1, [Define to mention that POSIX threads are supported])
fi
dnl check if the compiler supports pthreads spinlock
_efl_have_pthread_spinlock="no"
if test "x${_efl_have_pthread}" = "xyes" && test "x$1" = "xyes" ; then
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#include <pthread.h>
]],
[[
pthread_spinlock_t lock;
int res;
res = pthread_spin_init(&lock, PTHREAD_PROCESS_PRIVATE);
]])],
[_efl_have_pthread_spinlock="yes"],
[_efl_have_pthread_spinlock="no"])
fi
AC_MSG_CHECKING([whether to build POSIX threads spinlock code])
AC_MSG_RESULT([${_efl_have_pthread_spinlock}])
if test "$x{_efl_enable_pthread}" = "xyes" && test "x${_efl_have_pthread_spinlock}" = "xno" && test "x$1" = "xyes" ; then
AC_MSG_ERROR([pthread support requested but spinlocks are not supported])
fi
if test "x${_efl_have_pthread_spinlock}" = "xyes" ; then
AC_DEFINE(EFL_HAVE_PTHREAD_SPINLOCK, 1, [Define to mention that POSIX threads spinlocks are supported])
fi
AS_IF([test "x$_efl_have_pthread" = "xyes"], [$2], [$3])
AS_IF([test "x$_efl_have_pthread_spinlock" = "xyes"], [$4], [$5])
])
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