dnl Copyright (C) 2008 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 ASM instruction sets are available or not.

dnl Usage: EFL_CHECK_EFL_CHECK_PTHREAD([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl Call AC_SUBST(EFL_PTHREAD_FLAGS)
dnl Define EFL_HAVE_PTHREAD

AC_DEFUN([EFL_CHECK_PTHREAD],
[

dnl configure option

AC_ARG_ENABLE([pthread],
   [AC_HELP_STRING([--enable-pthread], [enable POSIX threads code @<:@default=no@:>@])],
   [
    if test "x${enableval}" = "xyes" ; then
       _efl_enable_pthread="yes"
    else
       _efl_enable_pthread="no"
    fi
   ],
   [_efl_enable_pthread="no"]
)
AC_MSG_CHECKING([whether to build POSIX threads code])
AC_MSG_RESULT([${_efl_enable_pthread}])

dnl check if the compiler supports pthreads

_efl_have_pthread="no"

if test "x${_efl_enable_pthread}" = "xyes" ; then

   SAVE_CFLAGS=${CFLAGS}
   CFLAGS="-pthread"
   AC_LANG_PUSH([C])

   AC_COMPILE_IFELSE(
      [AC_LANG_PROGRAM([[
#include <pthread.h>
                       ]],
                       [[]])
      ],
      [_efl_have_pthread="yes"
       EFL_PTHREAD_FLAGS="-pthread"]
   )

   AC_LANG_POP([C])
   CFLAGS=${SAVE_CFLAGS}
fi

AC_MSG_CHECKING([whether POSIX threads are supported])
AC_MSG_RESULT([${_efl_have_pthread}])

AC_SUBST(EFL_PTHREAD_FLAGS)

if test "x${_efl_have_pthread}" = "xyes" ; then
   AC_DEFINE(EFL_HAVE_PTHREAD, 1, [Define to mention that POSIX threads are supported])
fi

if test "x${_efl_have_pthread}" = "xyes" ; then
   ifelse([$1], , :, [$1])
else
   ifelse([$2], , :, [$2])
fi
])