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Package-Manager: Portage-3.0.1, Repoman-2.3.23 Closes: https://bugs.gentoo.org/726290 Signed-off-by: Jeroen Roovers <[email protected]>
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Jeroen Roovers
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# =========================================================================== | ||
# https://www.gnu.org/software/autoconf-archive/ax_prefix_config_h.html | ||
# =========================================================================== | ||
# | ||
# SYNOPSIS | ||
# | ||
# AX_PREFIX_CONFIG_H [(OUTPUT-HEADER [,PREFIX [,ORIG-HEADER]])] | ||
# | ||
# DESCRIPTION | ||
# | ||
# Generate an installable config.h. | ||
# | ||
# A package should not normally install its config.h as a system header, | ||
# but if it must, this macro can be used to avoid namespace pollution by | ||
# making a copy of config.h with a prefix added to all the macro names. | ||
# | ||
# Each "#define SOMEDEF" line of the configuration header has the given | ||
# prefix added, in the same case as the first character of the macro name. | ||
# | ||
# Defaults: | ||
# | ||
# OUTPUT-HEADER = $PACKAGE-config.h | ||
# PREFIX = $PACKAGE | ||
# ORIG-HEADER, from AM_CONFIG_HEADER(config.h) | ||
# | ||
# Your configure.ac script should contain both macros in this order. | ||
# | ||
# Example: | ||
# | ||
# AC_INIT(config.h.in) # config.h.in as created by "autoheader" | ||
# AM_INIT_AUTOMAKE(testpkg, 0.1.1) # makes #undef VERSION and PACKAGE | ||
# AM_CONFIG_HEADER(config.h) # prep config.h from config.h.in | ||
# AX_PREFIX_CONFIG_H(mylib/_config.h) # prep mylib/_config.h from it.. | ||
# AC_MEMORY_H # makes "#undef NEED_MEMORY_H" | ||
# AC_C_CONST_H # makes "#undef const" | ||
# AC_OUTPUT(Makefile) # creates the "config.h" now | ||
# # and also mylib/_config.h | ||
# | ||
# If the argument to AX_PREFIX_CONFIG_H would have been omitted then the | ||
# default output file would have been called simply "testpkg-config.h", | ||
# but even under the name "mylib/_config.h" it contains prefix-defines | ||
# like | ||
# | ||
# #ifndef TESTPKG_VERSION | ||
# #define TESTPKG_VERSION "0.1.1" | ||
# #endif | ||
# #ifndef TESTPKG_NEED_MEMORY_H | ||
# #define TESTPKG_NEED_MEMORY_H 1 | ||
# #endif | ||
# #ifndef _testpkg_const | ||
# #define _testpkg_const _const | ||
# #endif | ||
# | ||
# and this "mylib/_config.h" can be installed along with other header | ||
# files, which is most convenient when creating a shared library (that has | ||
# some headers) whose functionality depends on features detected at | ||
# compile-time. No need to invent some "mylib-confdefs.h.in" manually. | ||
# | ||
# Note that some AC_DEFINEs that end up in the config.h file are actually | ||
# self-referential - e.g. AC_C_INLINE, AC_C_CONST, and the AC_TYPE_OFF_T | ||
# say that they "will define inline|const|off_t if the system does not do | ||
# it by itself". You might want to clean up about these - consider an | ||
# extra mylib/conf.h that reads something like: | ||
# | ||
# #include <mylib/_config.h> | ||
# #ifndef _testpkg_const | ||
# #define _testpkg_const const | ||
# #endif | ||
# | ||
# and then start using _testpkg_const in the header files. That is also a | ||
# good thing to differentiate whether some library-user has starting to | ||
# take up with a different compiler, so perhaps it could read something | ||
# like this: | ||
# | ||
# #ifdef _MSC_VER | ||
# #include <mylib/_msvc.h> | ||
# #else | ||
# #include <mylib/_config.h> | ||
# #endif | ||
# #ifndef _testpkg_const | ||
# #define _testpkg_const const | ||
# #endif | ||
# | ||
# LICENSE | ||
# | ||
# Copyright (c) 2014 Reuben Thomas <[email protected]> | ||
# Copyright (c) 2008 Guido U. Draheim <[email protected]> | ||
# Copyright (c) 2008 Marten Svantesson | ||
# Copyright (c) 2008 Gerald Point <[email protected]> | ||
# | ||
# This program is free software; you can redistribute it and/or modify it | ||
# under the terms of the GNU General Public License as published by the | ||
# Free Software Foundation; either version 3 of the License, or (at your | ||
# option) any later version. | ||
# | ||
# This program is distributed in the hope that it will be useful, but | ||
# WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General | ||
# Public License for more details. | ||
# | ||
# You should have received a copy of the GNU General Public License along | ||
# with this program. If not, see <https://www.gnu.org/licenses/>. | ||
# | ||
# As a special exception, the respective Autoconf Macro's copyright owner | ||
# gives unlimited permission to copy, distribute and modify the configure | ||
# scripts that are the output of Autoconf when processing the Macro. You | ||
# need not follow the terms of the GNU General Public License when using | ||
# or distributing such scripts, even though portions of the text of the | ||
# Macro appear in them. The GNU General Public License (GPL) does govern | ||
# all other use of the material that constitutes the Autoconf Macro. | ||
# | ||
# This special exception to the GPL applies to versions of the Autoconf | ||
# Macro released by the Autoconf Archive. When you make and distribute a | ||
# modified version of the Autoconf Macro, you may extend this special | ||
# exception to the GPL to apply to your modified version as well. | ||
|
||
#serial 16 | ||
|
||
AC_DEFUN([AX_PREFIX_CONFIG_H],[dnl | ||
AC_PREREQ([2.62]) | ||
AC_BEFORE([AC_CONFIG_HEADERS],[$0])dnl | ||
AC_CONFIG_COMMANDS(m4_default([$1], [$PACKAGE-config.h]),[dnl | ||
AS_VAR_PUSHDEF([_OUT],[ac_prefix_conf_OUT])dnl | ||
AS_VAR_PUSHDEF([_DEF],[ac_prefix_conf_DEF])dnl | ||
AS_VAR_PUSHDEF([_PKG],[ac_prefix_conf_PKG])dnl | ||
AS_VAR_PUSHDEF([_LOW],[ac_prefix_conf_LOW])dnl | ||
AS_VAR_PUSHDEF([_UPP],[ac_prefix_conf_UPP])dnl | ||
AS_VAR_PUSHDEF([_INP],[ac_prefix_conf_INP])dnl | ||
m4_pushdef([_script],[conftest.prefix])dnl | ||
m4_pushdef([_symbol],[m4_cr_Letters[]m4_cr_digits[]_])dnl | ||
_OUT=`echo m4_default([$1], [$PACKAGE-config.h])` | ||
_DEF=`echo _$_OUT | sed -e "y:m4_cr_letters:m4_cr_LETTERS[]:" -e "s/@<:@^m4_cr_Letters@:>@/_/g"` | ||
_PKG=`echo m4_default([$2], [$PACKAGE])` | ||
_LOW=`echo _$_PKG | sed -e "y:m4_cr_LETTERS-:m4_cr_letters[]_:"` | ||
_UPP=`echo $_PKG | sed -e "y:m4_cr_letters-:m4_cr_LETTERS[]_:" -e "/^@<:@m4_cr_digits@:>@/s/^/_/"` | ||
_INP=`echo "$3" | sed -e 's/ *//'` | ||
if test ".$_INP" = "."; then | ||
for ac_file in : $CONFIG_HEADERS; do test "_$ac_file" = _: && continue | ||
case "$ac_file" in | ||
*.h) _INP=$ac_file ;; | ||
*) | ||
esac | ||
test ".$_INP" != "." && break | ||
done | ||
fi | ||
if test ".$_INP" = "."; then | ||
case "$_OUT" in | ||
*/*) _INP=`basename "$_OUT"` | ||
;; | ||
*-*) _INP=`echo "$_OUT" | sed -e "s/@<:@_symbol@:>@*-//"` | ||
;; | ||
*) _INP=config.h | ||
;; | ||
esac | ||
fi | ||
if test -z "$_PKG" ; then | ||
AC_MSG_ERROR([no prefix for _PREFIX_PKG_CONFIG_H]) | ||
else | ||
if test ! -f "$_INP" ; then if test -f "$srcdir/$_INP" ; then | ||
_INP="$srcdir/$_INP" | ||
fi fi | ||
AC_MSG_NOTICE(creating $_OUT - prefix $_UPP for $_INP defines) | ||
if test -f $_INP ; then | ||
AS_ECHO(["s/^@%:@undef *\\(@<:@m4_cr_LETTERS[]_@:>@\\)/@%:@undef $_UPP""_\\1/"]) > _script | ||
AS_ECHO(["s/^@%:@undef *\\(@<:@m4_cr_letters@:>@\\)/@%:@undef $_LOW""_\\1/"]) >> _script | ||
AS_ECHO(["s/^@%:@def[]ine *\\(@<:@m4_cr_LETTERS[]_@:>@@<:@_symbol@:>@*\\)\\(.*\\)/@%:@ifndef $_UPP""_\\1\\"]) >> _script | ||
AS_ECHO(["@%:@def[]ine $_UPP""_\\1\\2\\"]) >> _script | ||
AS_ECHO(["@%:@endif/"]) >> _script | ||
AS_ECHO(["s/^@%:@def[]ine *\\(@<:@m4_cr_letters@:>@@<:@_symbol@:>@*\\)\\(.*\\)/@%:@ifndef $_LOW""_\\1\\"]) >> _script | ||
AS_ECHO(["@%:@define $_LOW""_\\1\\2\\"]) >> _script | ||
AS_ECHO(["@%:@endif/"]) >> _script | ||
# now executing _script on _DEF input to create _OUT output file | ||
echo "@%:@ifndef $_DEF" >$tmp/pconfig.h | ||
echo "@%:@def[]ine $_DEF 1" >>$tmp/pconfig.h | ||
echo ' ' >>$tmp/pconfig.h | ||
echo /'*' $_OUT. Generated automatically at end of configure. '*'/ >>$tmp/pconfig.h | ||
sed -f _script $_INP >>$tmp/pconfig.h | ||
echo ' ' >>$tmp/pconfig.h | ||
echo '/* once:' $_DEF '*/' >>$tmp/pconfig.h | ||
echo "@%:@endif" >>$tmp/pconfig.h | ||
if cmp -s $_OUT $tmp/pconfig.h 2>/dev/null; then | ||
AC_MSG_NOTICE([$_OUT is unchanged]) | ||
else | ||
ac_dir=`AS_DIRNAME(["$_OUT"])` | ||
AS_MKDIR_P(["$ac_dir"]) | ||
rm -f "$_OUT" | ||
mv $tmp/pconfig.h "$_OUT" | ||
fi | ||
else | ||
AC_MSG_ERROR([input file $_INP does not exist - skip generating $_OUT]) | ||
fi | ||
rm -f conftest.* | ||
fi | ||
m4_popdef([_symbol])dnl | ||
m4_popdef([_script])dnl | ||
AS_VAR_POPDEF([_INP])dnl | ||
AS_VAR_POPDEF([_UPP])dnl | ||
AS_VAR_POPDEF([_LOW])dnl | ||
AS_VAR_POPDEF([_PKG])dnl | ||
AS_VAR_POPDEF([_DEF])dnl | ||
AS_VAR_POPDEF([_OUT])dnl | ||
],[PACKAGE="$PACKAGE"])]) |
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