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comparison mupdf-source/thirdparty/lcms2/m4/ax_append_compile_flags.m4 @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
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