AC_DEFUN([AX_GCC_OPTION], [ AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if gcc accepts $1 option]) AS_IF([ test "x$GCC" = "xyes" ],[ AS_IF([ test -z "$3" ],[ ax_gcc_option_test="int main() { return 0; }" ],[ ax_gcc_option_test="$3" ]) # Dump the test program to file cat < conftest.c $ax_gcc_option_test EOF # Dump back the file to the log, useful for debugging purposes AC_TRY_COMMAND(cat conftest.c 1>&AS_MESSAGE_LOG_FD) AS_IF([ AC_TRY_COMMAND($CC $2 $1 -c conftest.c 1>&AS_MESSAGE_LOG_FD) ],[ AC_MSG_RESULT([yes]) $4 ],[ AC_MSG_RESULT([no]) $5 ]) ],[ AC_MSG_RESULT([no gcc available]) ]) ])