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[wxWidgets.git] / src / expat / configure.in
1 dnl configuration script for expat
2 dnl Process this file with autoconf to produce a configure script.
3 dnl
4 dnl Copyright 2000 Clark Cooper
5 dnl
6 dnl This file is part of EXPAT.
7 dnl
8 dnl EXPAT is free software; you can redistribute it and/or modify it
9 dnl under the terms of the License (based on the MIT/X license) contained
10 dnl in the file COPYING that comes with this distribution.
11 dnl
12
13 dnl Ensure that Expat is configured with autoconf 2.52 or newer
14 AC_PREREQ(2.52)
15
16 dnl Get the version number of Expat, using m4's esyscmd() command to run
17 dnl the command at m4-generation time. This allows us to create an m4
18 dnl symbol holding the correct version number. AC_INIT() requires the
19 dnl version number at m4-time, rather than when ./configure is run, so
20 dnl all this must happen as part of m4, not as part of the shell code
21 dnl contained in ./configure.
22 dnl
23 dnl NOTE: esyscmd() is a GNU M4 extension. Thus, we wrap it in an appropriate
24 dnl test. I believe this test will work, but I don't have a place with non-
25 dnl GNU M4 to test it right now.
26 define([expat_version], ifdef([__gnu__],
27 [esyscmd(conftools/get-version.sh lib/expat.h)],
28 [1.95.x]))
29 AC_INIT(expat, expat_version, expat-bugs@mail.libexpat.org)
30 undefine([expat_version])
31
32 AC_CONFIG_SRCDIR(Makefile.in)
33 AC_CONFIG_AUX_DIR(conftools)
34
35
36 dnl
37 dnl Increment LIBREVISION if source code has changed at all
38 dnl
39 dnl If the API has changed, increment LIBCURRENT and set LIBREVISION to 0
40 dnl
41 dnl If the API changes compatibly (i.e. simply adding a new function
42 dnl without changing or removing earlier interfaces), then increment LIBAGE.
43 dnl
44 dnl If the API changes incompatibly set LIBAGE back to 0
45 dnl
46
47 LIBCURRENT=4
48 LIBREVISION=0
49 LIBAGE=4
50
51 AC_CONFIG_HEADER(expat_config.h)
52
53 sinclude(conftools/libtool.m4)
54 sinclude(conftools/ac_c_bigendian_cross.m4)
55
56
57 dnl Check for many C compilers (have to do this before libtool stuff)
58 AC_BAKEFILE_PROG_CC
59
60 AC_LIBTOOL_WIN32_DLL
61 AC_PROG_LIBTOOL
62
63 AC_SUBST(LIBCURRENT)
64 AC_SUBST(LIBREVISION)
65 AC_SUBST(LIBAGE)
66
67 dnl Checks for programs.
68 AC_PROG_INSTALL
69
70 if test "$GCC" = yes ; then
71 dnl
72 dnl Be careful about adding the -fexceptions option; some versions of
73 dnl GCC don't support it and it causes extra warnings that are only
74 dnl distracting; avoid.
75 dnl
76 OLDCFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wstrict-prototypes"
77 CFLAGS="$OLDCFLAGS -fexceptions"
78 AC_MSG_CHECKING(whether gcc accepts -fexceptions)
79 AC_TRY_COMPILE(,(void)1,
80 AC_MSG_RESULT(yes),
81 AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS")
82 fi
83
84 dnl Checks for header files.
85 AC_HEADER_STDC
86 AC_CHECK_HEADERS(fcntl.h unistd.h)
87
88 dnl Checks for typedefs, structures, and compiler characteristics.
89
90 dnl Note: Avoid using AC_C_BIGENDIAN because it does not
91 dnl work in a cross compile.
92 AC_C_BIGENDIAN_CROSS
93
94 AC_C_CONST
95 AC_TYPE_OFF_T
96 AC_TYPE_SIZE_T
97
98 dnl Checks for library functions.
99
100 AC_FUNC_MEMCMP
101 AC_FUNC_MMAP
102
103 if test "$ac_cv_func_mmap_fixed_mapped" = "yes"; then
104 FILEMAP=unixfilemap
105 else
106 FILEMAP=readfilemap
107 fi
108 AC_SUBST(FILEMAP)
109
110 AC_CHECK_FUNCS(memmove bcopy)
111
112 dnl some basic configuration
113 AC_DEFINE([XML_NS], 1,
114 [Define to make XML Namespaces functionality available.])
115 AC_DEFINE([XML_DTD], 1,
116 [Define to make parameter entity parsing functionality available.])
117 AC_DEFINE([XML_CONTEXT_BYTES], 1024,
118 [Define to specify how much context to retain around the current parse point.])
119
120 AC_CONFIG_FILES(Makefile)
121 AC_OUTPUT
122
123 abs_srcdir="`cd $srcdir && pwd`"
124 abs_builddir="`pwd`"
125 if test "$abs_srcdir" != "$abs_builddir"; then
126 ${MAKE:-make} mkdir-init
127 fi