1dnl   configuration script for expat
2dnl   Process this file with autoconf to produce a configure script.
3dnl
4dnl   Copyright 2000 Clark Cooper
5dnl
6dnl   This file is part of EXPAT.
7dnl
8dnl   EXPAT is free software; you can redistribute it and/or modify it
9dnl   under the terms of the License (based on the MIT/X license) contained
10dnl   in the file COPYING that comes with this distribution.
11dnl
12
13dnl Ensure that Expat is configured with autoconf 2.52 or newer
14AC_PREREQ(2.52)
15
16dnl Get the version number of Expat, using m4's esyscmd() command to run
17dnl the command at m4-generation time. This allows us to create an m4
18dnl symbol holding the correct version number. AC_INIT() requires the
19dnl version number at m4-time, rather than when ./configure is run, so
20dnl all this must happen as part of m4, not as part of the shell code
21dnl contained in ./configure.
22dnl
23dnl NOTE: esyscmd() is a GNU M4 extension. Thus, we wrap it in an appropriate
24dnl test. I believe this test will work, but I don't have a place with non-
25dnl GNU M4 to test it right now.
26define([expat_version], ifdef([__gnu__],
27                              [esyscmd(conftools/get-version.sh lib/expat.h)],
28                              [1.95.x]))
29AC_INIT(expat, expat_version, expat-bugs@mail.libexpat.org)
30undefine([expat_version])
31
32AC_CONFIG_SRCDIR(Makefile.in)
33AC_CONFIG_AUX_DIR(conftools)
34
35
36dnl
37dnl Increment LIBREVISION if source code has changed at all
38dnl
39dnl If the API has changed, increment LIBCURRENT and set LIBREVISION to 0
40dnl
41dnl If the API changes compatibly (i.e. simply adding a new function
42dnl without changing or removing earlier interfaces), then increment LIBAGE.
43dnl
44dnl If the API changes incompatibly set LIBAGE back to 0
45dnl
46
47LIBCURRENT=4
48LIBREVISION=0
49LIBAGE=4
50
51AC_CONFIG_HEADER(expat_config.h)
52
53sinclude(conftools/libtool.m4)
54sinclude(conftools/ac_c_bigendian_cross.m4)
55
56
57dnl Check for many C compilers (have to do this before libtool stuff)
58AC_BAKEFILE_PROG_CC
59
60AC_LIBTOOL_WIN32_DLL
61AC_PROG_LIBTOOL
62
63AC_SUBST(LIBCURRENT)
64AC_SUBST(LIBREVISION)
65AC_SUBST(LIBAGE)
66
67dnl Checks for programs.
68AC_PROG_INSTALL
69
70if 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")
82fi
83
84dnl Checks for header files.
85AC_HEADER_STDC
86AC_CHECK_HEADERS(fcntl.h unistd.h)
87
88dnl Checks for typedefs, structures, and compiler characteristics.
89
90dnl Note: Avoid using AC_C_BIGENDIAN because it does not
91dnl work in a cross compile.
92AC_C_BIGENDIAN_CROSS
93
94AC_C_CONST
95AC_TYPE_OFF_T
96AC_TYPE_SIZE_T
97
98dnl Checks for library functions.
99
100AC_FUNC_MEMCMP
101AC_FUNC_MMAP
102
103if test "$ac_cv_func_mmap_fixed_mapped" = "yes"; then
104    FILEMAP=unixfilemap
105else
106    FILEMAP=readfilemap
107fi
108AC_SUBST(FILEMAP)
109
110AC_CHECK_FUNCS(memmove bcopy)
111
112dnl some basic configuration
113AC_DEFINE([XML_NS], 1,
114          [Define to make XML Namespaces functionality available.])
115AC_DEFINE([XML_DTD], 1,
116          [Define to make parameter entity parsing functionality available.])
117AC_DEFINE([XML_CONTEXT_BYTES], 1024,
118          [Define to specify how much context to retain around the current parse point.])
119
120AC_CONFIG_FILES(Makefile)
121AC_OUTPUT
122
123abs_srcdir="`cd $srcdir && pwd`"
124abs_builddir="`pwd`"
125if test "$abs_srcdir" != "$abs_builddir"; then
126  ${MAKE:-make} mkdir-init
127fi
128