Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/m4/ax_check_link_flag.m4 @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # ===========================================================================
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2 # https://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html
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3 # ===========================================================================
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4 #
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5 # SYNOPSIS
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6 #
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7 # AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
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8 #
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9 # DESCRIPTION
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10 #
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11 # Check whether the given FLAG works with the linker or gives an error.
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12 # (Warnings, however, are ignored)
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13 #
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14 # ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
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15 # success/failure.
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16 #
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17 # If EXTRA-FLAGS is defined, it is added to the linker's default flags
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18 # when the check is done. The check is thus made with the flags: "LDFLAGS
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19 # EXTRA-FLAGS FLAG". This can for example be used to force the linker to
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20 # issue an error when a bad flag is given.
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21 #
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22 # INPUT gives an alternative input source to AC_LINK_IFELSE.
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23 #
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24 # NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
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25 # macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG.
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26 #
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27 # LICENSE
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28 #
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29 # Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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30 # Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
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31 #
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32 # This program is free software: you can redistribute it and/or modify it
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33 # under the terms of the GNU General Public License as published by the
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34 # Free Software Foundation, either version 3 of the License, or (at your
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35 # option) any later version.
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36 #
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37 # This program is distributed in the hope that it will be useful, but
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38 # WITHOUT ANY WARRANTY; without even the implied warranty of
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39 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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40 # Public License for more details.
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41 #
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42 # You should have received a copy of the GNU General Public License along
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43 # with this program. If not, see <https://www.gnu.org/licenses/>.
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44 #
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45 # As a special exception, the respective Autoconf Macro's copyright owner
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46 # gives unlimited permission to copy, distribute and modify the configure
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47 # scripts that are the output of Autoconf when processing the Macro. You
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48 # need not follow the terms of the GNU General Public License when using
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49 # or distributing such scripts, even though portions of the text of the
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50 # Macro appear in them. The GNU General Public License (GPL) does govern
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51 # all other use of the material that constitutes the Autoconf Macro.
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52 #
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53 # This special exception to the GPL applies to versions of the Autoconf
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54 # Macro released by the Autoconf Archive. When you make and distribute a
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55 # modified version of the Autoconf Macro, you may extend this special
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56 # exception to the GPL to apply to your modified version as well.
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57
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58 #serial 5
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59
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60 AC_DEFUN([AX_CHECK_LINK_FLAG],
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61 [AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
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62 AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
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63 AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
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64 ax_check_save_flags=$LDFLAGS
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65 LDFLAGS="$LDFLAGS $4 $1"
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66 AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
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67 [AS_VAR_SET(CACHEVAR,[yes])],
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68 [AS_VAR_SET(CACHEVAR,[no])])
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69 LDFLAGS=$ax_check_save_flags])
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70 AS_VAR_IF(CACHEVAR,yes,
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71 [m4_default([$2], :)],
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72 [m4_default([$3], :)])
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73 AS_VAR_POPDEF([CACHEVAR])dnl
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74 ])dnl AX_CHECK_LINK_FLAGS