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 2.58 or newer
14AC_PREREQ(2.58)
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                              [2.1.x]))
29AC_INIT(expat, expat_version, expat-bugs@libexpat.org)
30undefine([expat_version])
31
32AC_CONFIG_SRCDIR(Makefile.in)
33AC_CONFIG_AUX_DIR(conftools)
34AC_CONFIG_MACRO_DIR([m4])
35
36
37dnl
38dnl Increment LIBREVISION if source code has changed at all
39dnl
40dnl If the API has changed, increment LIBCURRENT and set LIBREVISION to 0
41dnl
42dnl If the API changes compatibly (i.e. simply adding a new function
43dnl without changing or removing earlier interfaces), then increment LIBAGE.
44dnl 
45dnl If the API changes incompatibly set LIBAGE back to 0
46dnl
47
48LIBCURRENT=7
49LIBREVISION=0
50LIBAGE=6
51
52AC_CONFIG_HEADER(expat_config.h)
53
54sinclude(conftools/ac_c_bigendian_cross.m4)
55
56AC_LIBTOOL_WIN32_DLL
57AC_PROG_LIBTOOL
58
59AC_SUBST(LIBCURRENT)
60AC_SUBST(LIBREVISION)
61AC_SUBST(LIBAGE)
62
63dnl Checks for programs.
64AC_PROG_CC
65AC_PROG_CXX
66AC_PROG_INSTALL
67
68if test "$GCC" = yes ; then
69    dnl
70    dnl Be careful about adding the -fexceptions option; some versions of
71    dnl GCC don't support it and it causes extra warnings that are only
72    dnl distracting; avoid.
73    dnl
74    OLDCFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wstrict-prototypes"
75    CFLAGS="$OLDCFLAGS -fexceptions"
76    AC_MSG_CHECKING(whether $CC accepts -fexceptions)
77    AC_TRY_LINK( , ,
78                   AC_MSG_RESULT(yes),
79                   AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS")
80    CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'`
81fi
82
83dnl Checks for header files.
84AC_HEADER_STDC
85
86dnl Checks for typedefs, structures, and compiler characteristics.
87
88dnl Note: Avoid using AC_C_BIGENDIAN because it does not
89dnl work in a cross compile.
90AC_C_BIGENDIAN_CROSS
91
92AC_C_CONST
93AC_TYPE_SIZE_T
94AC_CHECK_FUNCS(memmove bcopy)
95
96dnl Only needed for xmlwf:
97AC_CHECK_HEADERS(fcntl.h unistd.h)
98AC_TYPE_OFF_T
99AC_FUNC_MMAP
100
101if test "$ac_cv_func_mmap_fixed_mapped" = "yes"; then
102    FILEMAP=unixfilemap
103else
104    FILEMAP=readfilemap
105fi
106AC_SUBST(FILEMAP)
107
108dnl Needed for the test support code; this was found at
109dnl http://lists.gnu.org/archive/html/bug-autoconf/2002-07/msg00028.html
110
111# AC_CPP_FUNC
112# ------------------ #
113# Checks to see if ANSI C99 CPP variable __func__ works.
114# If not, perhaps __FUNCTION__ works instead. 
115# If not, we'll just define __func__ to "". 
116AC_DEFUN([AC_CPP_FUNC],
117[AC_REQUIRE([AC_PROG_CC_STDC])dnl
118AC_CACHE_CHECK([for an ANSI C99-conforming __func__], ac_cv_cpp_func,
119[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
120[[char *foo = __func__;]])],
121  [ac_cv_cpp_func=yes], 
122  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
123[[char *foo = __FUNCTION__;]])],
124  [ac_cv_cpp_func=__FUNCTION__], 
125  [ac_cv_cpp_func=no])])])
126if test $ac_cv_cpp_func = __FUNCTION__; then
127  AC_DEFINE(__func__,__FUNCTION__,
128            [Define to __FUNCTION__ or "" if `__func__' does not conform to 
129ANSI C.])
130elif test $ac_cv_cpp_func = no; then
131  AC_DEFINE(__func__,"",
132            [Define to __FUNCTION__ or "" if `__func__' does not conform to 
133ANSI C.])
134fi
135])# AC_CPP_FUNC
136
137AC_CPP_FUNC
138
139
140dnl Some basic configuration:
141AC_DEFINE([XML_NS], 1,
142          [Define to make XML Namespaces functionality available.])
143AC_DEFINE([XML_DTD], 1,
144          [Define to make parameter entity parsing functionality available.])
145AC_DEFINE([XML_CONTEXT_BYTES], 1024,
146          [Define to specify how much context to retain around the current parse point.])
147
148AC_CONFIG_FILES([Makefile expat.pc])
149AC_OUTPUT
150
151abs_srcdir="`cd $srcdir && pwd`"
152abs_builddir="`pwd`"
153if test "$abs_srcdir" != "$abs_builddir"; then
154  make mkdir-init
155fi
156