dnl @synopsis AX_GCC_OPTION(VARIABLE, OPTION, VALUE-IF-SUCCESSFUL, VALUE-IF-NOT-SUCCESFUL)
dnl
dnl AX_GCC_OPTION checks wheter gcc accepts the passed OPTION. If it
dnl accepts the OPTION then then macro sets VARIABLE to
dnl VALUE-IF-SUCCESSFUL, otherwise it sets VARIABLE to
dnl VALUE-IF-UNSUCCESSFUL.
dnl
dnl @category C
dnl @author Francesco Salvestrini <salvestrini@users.sourceforge.net>
dnl @version 2005-01-22
dnl @license GPLWithACException

AC_DEFUN([AX_GCC_OPTION], [
AC_REQUIRE([AC_PROG_CC])
if test "x$GCC" = "xyes"; then
	AC_MSG_CHECKING([if gcc accepts $2 option])
   	if AC_TRY_COMMAND($CC $2) >/dev/null 2>&1; then
   		$1=$3
   	        AC_MSG_RESULT([yes])
   	else
   		$1=$4
   		AC_MSG_RESULT([no])
   	fi
else
	unset $1
        AC_MSG_RESULT([sorry, no gcc available])
fi
])