| # ============================================================================ |
| # https://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html |
| # ============================================================================ |
| # |
| # SYNOPSIS |
| # |
| # AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) |
| # |
| # DESCRIPTION |
| # |
| # For every FLAG1, FLAG2 it is checked whether the compiler works with the |
| # flag. If it does, the flag is added FLAGS-VARIABLE |
| # |
| # If FLAGS-VARIABLE is not specified, the current language's flags (e.g. |
| # CFLAGS) is used. During the check the flag is always added to the |
| # current language's flags. |
| # |
| # If EXTRA-FLAGS is defined, it is added to the current language's default |
| # flags (e.g. CFLAGS) when the check is done. The check is thus made with |
| # the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to |
| # force the compiler to issue an error when a bad flag is given. |
| # |
| # INPUT gives an alternative input source to AC_COMPILE_IFELSE. |
| # |
| # NOTE: This macro depends on the AX_APPEND_FLAG and |
| # AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with |
| # AX_APPEND_LINK_FLAGS. |
| # |
| # LICENSE |
| # |
| # Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> |
| # |
| # Copying and distribution of this file, with or without modification, are |
| # permitted in any medium without royalty provided the copyright notice |
| # and this notice are preserved. This file is offered as-is, without any |
| # warranty. |
| |
| #serial 7 |
| |
| AC_DEFUN([AX_APPEND_COMPILE_FLAGS], |
| [AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) |
| AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) |
| for flag in $1; do |
| AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4]) |
| done |
| ])dnl AX_APPEND_COMPILE_FLAGS |