1 dnl @synopsis AC_CREATE_PREFIX_CONFIG_H [(OUTPUT-HEADER [,PREFIX [,ORIG-HEADER]])]
3 dnl this is a new variant from ac_prefix_config_
4 dnl this one will use a lowercase-prefix if
5 dnl the config-define was starting with a lowercase-char, e.g.
6 dnl #define const or #define restrict or #define off_t
7 dnl (and this one can live in another directory, e.g. testpkg/config.h
8 dnl therefore I decided to move the output-header to be the first arg)
10 dnl takes the usual config.h generated header file; looks for each of
11 dnl the generated "#define SOMEDEF" lines, and prefixes the defined name
12 dnl (ie. makes it "#define PREFIX_SOMEDEF". The result is written to
13 dnl the output config.header file. The PREFIX is converted to uppercase
14 dnl for the conversions.
16 dnl default OUTPUT-HEADER = $PACKAGE-config.h
17 dnl default PREFIX = $PACKAGE
18 dnl default ORIG-HEADER, derived from OUTPUT-HEADER
19 dnl if OUTPUT-HEADER has a "/", use the basename
20 dnl if OUTPUT-HEADER has a "-", use the section after it.
21 dnl otherwise, just config.h
23 dnl In most cases, the configure.in will contain a line saying
24 dnl AC_CONFIG_HEADER(config.h)
25 dnl somewhere *before* AC_OUTPUT and a simple line saying
26 dnl AC_PREFIX_CONFIG_HEADER
27 dnl somewhere *after* AC_OUTPUT.
30 dnl AC_INIT(config.h.in) # config.h.in as created by "autoheader"
31 dnl AM_INIT_AUTOMAKE(testpkg, 0.1.1) # "#undef VERSION" and "PACKAGE"
32 dnl AM_CONFIG_HEADER(config.h) # in config.h.in
33 dnl AC_MEMORY_H # "#undef NEED_MEMORY_H"
34 dnl AC_C_CONST_H # "#undef const"
35 dnl AC_OUTPUT(Makefile) # creates the "config.h" now
36 dnl AC_CREATE_PREFIX_CONFIG_H # creates "testpkg-config.h"
37 dnl and the resulting "testpkg-config.h" contains lines like
38 dnl #ifndef TESTPKG_VERSION
39 dnl #define TESTPKG_VERSION "0.1.1"
41 dnl #ifndef TESTPKG_NEED_MEMORY_H
42 dnl #define TESTPKG_NEED_MEMORY_H 1
44 dnl #ifndef _testpkg_const
45 dnl #define _testpkg_const const
48 dnl and this "testpkg-config.h" can be installed along with other
49 dnl header-files, which is most convenient when creating a shared
50 dnl library (that has some headers) where some functionality is
51 dnl dependent on the OS-features detected at compile-time. No
52 dnl need to invent some "testpkg-confdefs.h.in" manually. :-)
55 dnl @author Guido Draheim <guidod@gmx.de>
57 AC_DEFUN([AC_CREATE_PREFIX_CONFIG_H],
59 ac_prefix_conf_OUT=`echo ifelse($1, , $PACKAGE-config.h, $1)`
60 ac_prefix_conf_DEF=`echo _$ac_prefix_conf_OUT | sed -e 'y:abcdefghijklmnopqrstuvwxyz./,-:ABCDEFGHIJKLMNOPQRSTUVWXYZ____:'`
61 ac_prefix_conf_PKG=`echo ifelse($2, , $PACKAGE, $2)`
62 ac_prefix_conf_LOW=`echo _$ac_prefix_conf_PKG | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ-:abcdefghijklmnopqrstuvwxyz_:'`
63 ac_prefix_conf_UPP=`echo $ac_prefix_conf_PKG | sed -e 'y:abcdefghijklmnopqrstuvwxyz-:ABCDEFGHIJKLMNOPQRSTUVWXYZ_:' -e '/^[0-9]/s/^/_/'`
64 ac_prefix_conf_INP=`echo ifelse($3, , _, $3)`
65 if test "$ac_prefix_conf_INP" = "_"; then
66 case $ac_prefix_conf_OUT in
67 */*) ac_prefix_conf_INP=`basename $ac_prefix_conf_OUT`
69 *-*) ac_prefix_conf_INP=`echo $ac_prefix_conf_OUT | sed -e 's/[a-zA-Z0-9_]*-//'`
71 *) ac_prefix_conf_INP=config.h
76 if test -z "$ac_prefix_conf_PKG" ; then
77 AC_MSG_ERROR([no prefix for _PREFIX_PKG_CONFIG_H])
79 AC_MSG_RESULT(creating $ac_prefix_conf_OUT - prefix $ac_prefix_conf_UPP for $ac_prefix_conf_INP defines)
80 if test -f $ac_prefix_conf_INP ; then
81 AS_DIRNAME([/* automatically generated */], $ac_prefix_conf_OUT)
83 echo '#ifndef '$ac_prefix_conf_DEF >$ac_prefix_conf_OUT
84 echo '#define '$ac_prefix_conf_DEF' 1' >>$ac_prefix_conf_OUT
85 echo ' ' >>$ac_prefix_conf_OUT
86 echo /'*' $ac_prefix_conf_OUT. Generated automatically at end of configure. '*'/ >>$ac_prefix_conf_OUT
88 echo 's/#undef *\([A-Z_]\)/#undef '$ac_prefix_conf_UPP'_\1/' >conftest.sed
89 echo 's/#undef *\([a-z]\)/#undef '$ac_prefix_conf_LOW'_\1/' >>conftest.sed
90 echo 's/#define *\([A-Z_][A-Za-z0-9_]*\)\(.*\)/#ifndef '$ac_prefix_conf_UPP"_\\1 \\" >>conftest.sed
91 echo '#define '$ac_prefix_conf_UPP"_\\1 \\2 \\" >>conftest.sed
92 echo '#endif/' >>conftest.sed
93 echo 's/#define *\([a-z][A-Za-z0-9_]*\)\(.*\)/#ifndef '$ac_prefix_conf_LOW"_\\1 \\" >>conftest.sed
94 echo '#define '$ac_prefix_conf_LOW"_\\1 \\2 \\" >>conftest.sed
95 echo '#endif/' >>conftest.sed
96 sed -f conftest.sed $ac_prefix_conf_INP >>$ac_prefix_conf_OUT
97 echo ' ' >>$ac_prefix_conf_OUT
98 echo '/*' $ac_prefix_conf_DEF '*/' >>$ac_prefix_conf_OUT
99 echo '#endif' >>$ac_prefix_conf_OUT
102 AC_MSG_ERROR([input file $ac_prefix_conf_IN does not exist, dnl
103 skip generating $ac_prefix_conf_OUT])