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Diffstat (limited to 'Build/source/texk/web2c/luatexdir/zziplib/m4/ax_prefix_config_h.m4')
-rw-r--r-- | Build/source/texk/web2c/luatexdir/zziplib/m4/ax_prefix_config_h.m4 | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/luatexdir/zziplib/m4/ax_prefix_config_h.m4 b/Build/source/texk/web2c/luatexdir/zziplib/m4/ax_prefix_config_h.m4 new file mode 100644 index 00000000000..efd8bad52f8 --- /dev/null +++ b/Build/source/texk/web2c/luatexdir/zziplib/m4/ax_prefix_config_h.m4 @@ -0,0 +1,171 @@ +dnl @synopsis AX_PREFIX_CONFIG_H [(OUTPUT-HEADER [,PREFIX [,ORIG-HEADER]])] +dnl +dnl This is a new variant from ac_prefix_config_ this one will use a +dnl lowercase-prefix if the config-define was starting with a +dnl lowercase-char, e.g. "#define const", "#define restrict", or +dnl "#define off_t", (and this one can live in another directory, e.g. +dnl testpkg/config.h therefore I decided to move the output-header to +dnl be the first arg) +dnl +dnl takes the usual config.h generated header file; looks for each of +dnl the generated "#define SOMEDEF" lines, and prefixes the defined +dnl name (ie. makes it "#define PREFIX_SOMEDEF". The result is written +dnl to the output config.header file. The PREFIX is converted to +dnl uppercase for the conversions. +dnl +dnl Defaults: +dnl +dnl OUTPUT-HEADER = $PACKAGE-config.h +dnl PREFIX = $PACKAGE +dnl ORIG-HEADER, from AM_CONFIG_HEADER(config.h) +dnl +dnl Your configure.ac script should contain both macros in this order, +dnl and unlike the earlier variations of this prefix-macro it is okay +dnl to place the AX_PREFIX_CONFIG_H call before the AC_OUTPUT +dnl invokation. +dnl +dnl Example: +dnl +dnl AC_INIT(config.h.in) # config.h.in as created by "autoheader" +dnl AM_INIT_AUTOMAKE(testpkg, 0.1.1) # makes #undef VERSION and PACKAGE +dnl AM_CONFIG_HEADER(config.h) # prep config.h from config.h.in +dnl AX_PREFIX_CONFIG_H(mylib/_config.h) # prep mylib/_config.h from it.. +dnl AC_MEMORY_H # makes "#undef NEED_MEMORY_H" +dnl AC_C_CONST_H # makes "#undef const" +dnl AC_OUTPUT(Makefile) # creates the "config.h" now +dnl # and also mylib/_config.h +dnl +dnl if the argument to AX_PREFIX_CONFIG_H would have been omitted then +dnl the default outputfile would have been called simply +dnl "testpkg-config.h", but even under the name "mylib/_config.h" it +dnl contains prefix-defines like +dnl +dnl #ifndef TESTPKG_VERSION +dnl #define TESTPKG_VERSION "0.1.1" +dnl #endif +dnl #ifndef TESTPKG_NEED_MEMORY_H +dnl #define TESTPKG_NEED_MEMORY_H 1 +dnl #endif +dnl #ifndef _testpkg_const +dnl #define _testpkg_const _const +dnl #endif +dnl +dnl and this "mylib/_config.h" can be installed along with other +dnl header-files, which is most convenient when creating a shared +dnl library (that has some headers) where some functionality is +dnl dependent on the OS-features detected at compile-time. No need to +dnl invent some "mylib-confdefs.h.in" manually. :-) +dnl +dnl Note that some AC_DEFINEs that end up in the config.h file are +dnl actually self-referential - e.g. AC_C_INLINE, AC_C_CONST, and the +dnl AC_TYPE_OFF_T say that they "will define inline|const|off_t if the +dnl system does not do it by itself". You might want to clean up about +dnl these - consider an extra mylib/conf.h that reads something like: +dnl +dnl #include <mylib/_config.h> +dnl #ifndef _testpkg_const +dnl #define _testpkg_const const +dnl #endif +dnl +dnl and then start using _testpkg_const in the header files. That is +dnl also a good thing to differentiate whether some library-user has +dnl starting to take up with a different compiler, so perhaps it could +dnl read something like this: +dnl +dnl #ifdef _MSC_VER +dnl #include <mylib/_msvc.h> +dnl #else +dnl #include <mylib/_config.h> +dnl #endif +dnl #ifndef _testpkg_const +dnl #define _testpkg_const const +dnl #endif +dnl +dnl @category Misc +dnl @author Guido Draheim <guidod@gmx.de> +dnl @version 2003-07-03 +dnl @license GPLWithACException +AC_DEFUN([AX_PREFIX_CONFIG_H],[AC_REQUIRE([AC_CONFIG_HEADER]) +AC_CONFIG_COMMANDS([ifelse($1,,$PACKAGE-config.h,$1)],[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 ifelse($1, , $PACKAGE-config.h, $1)` +_DEF=`echo _$_OUT | sed -e "y:m4_cr_letters:m4_cr_LETTERS[]:" -e "s/@<:@^m4_cr_Letters@:>@/_/g"` +_PKG=`echo ifelse($2, , $PACKAGE, $2)` +_LOW=`echo _$_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 "ifelse($3,,,$3)" | sed -e 's/ *//'` +if test ".$_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 + echo "s/@%:@undef *\\(@<:@m4_cr_LETTERS[]_@:>@\\)/@%:@undef $_UPP""_\\1/" > _script + echo "s/@%:@undef *\\(@<:@m4_cr_letters@:>@\\)/@%:@undef $_LOW""_\\1/" >> _script + echo "s/@%:@def[]ine *\\(@<:@m4_cr_LETTERS[]_@:>@@<:@_symbol@:>@*\\)\\(.*\\)/@%:@ifndef $_UPP""_\\1 \\" >> _script + echo "@%:@def[]ine $_UPP""_\\1 \\2 \\" >> _script + echo "@%:@endif/" >>_script + echo "s/@%:@def[]ine *\\(@<:@m4_cr_letters@:>@@<:@_symbol@:>@*\\)\\(.*\\)/@%:@ifndef $_LOW""_\\1 \\" >> _script + echo "@%:@define $_LOW""_\\1 \\2 \\" >> _script + 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 + cp _script _configs.sed + 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"])]) |