projects / urcu.git / blame
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|---|---|---|
| ee334e48 MJ |
1 | # ============================================================================ |
| 2 | # https://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html | |
| 3 | # ============================================================================ | |
| 4 | # | |
| 5 | # SYNOPSIS | |
| 6 | # | |
| 7 | # AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) | |
| 8 | # | |
| 9 | # DESCRIPTION | |
| 10 | # | |
| 11 | # For every FLAG1, FLAG2 it is checked whether the compiler works with the | |
| 12 | # flag. If it does, the flag is added FLAGS-VARIABLE | |
| 13 | # | |
| 14 | # If FLAGS-VARIABLE is not specified, the current language's flags (e.g. | |
| 15 | # CFLAGS) is used. During the check the flag is always added to the | |
| 16 | # current language's flags. | |
| 17 | # | |
| 18 | # If EXTRA-FLAGS is defined, it is added to the current language's default | |
| 19 | # flags (e.g. CFLAGS) when the check is done. The check is thus made with | |
| 20 | # the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to | |
| 21 | # force the compiler to issue an error when a bad flag is given. | |
| 22 | # | |
| 23 | # INPUT gives an alternative input source to AC_COMPILE_IFELSE. | |
| 24 | # | |
| 25 | # NOTE: This macro depends on the AX_APPEND_FLAG and | |
| 26 | # AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with | |
| 27 | # AX_APPEND_LINK_FLAGS. | |
| 28 | # | |
| 29 | # LICENSE | |
| 30 | # | |
| 31 | # Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> | |
| 32 | # | |
| 33 | # Copying and distribution of this file, with or without modification, are | |
| 34 | # permitted in any medium without royalty provided the copyright notice | |
| 35 | # and this notice are preserved. This file is offered as-is, without any | |
| 36 | # warranty. | |
| 37 | ||
| 38 | #serial 7 | |
| 39 | ||
| 40 | AC_DEFUN([AX_APPEND_COMPILE_FLAGS], | |
| 41 | [AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) | |
| 42 | AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) | |
| 43 | for flag in $1; do | |
| 44 | AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4]) | |
| 45 | done | |
| 46 | ])dnl AX_APPEND_COMPILE_FLAGS |