228 lines
6.5 KiB
Plaintext
228 lines
6.5 KiB
Plaintext
dnl configuration script for expat
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dnl Process this file with autoconf to produce a configure script.
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dnl
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dnl Copyright 2000 Clark Cooper
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dnl
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dnl This file is part of EXPAT.
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dnl
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dnl EXPAT is free software; you can redistribute it and/or modify it
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dnl under the terms of the License (based on the MIT/X license) contained
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dnl in the file COPYING that comes with this distribution.
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dnl
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dnl Ensure that Expat is configured with autoconf 2.58 or newer
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AC_PREREQ(2.58)
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dnl Get the version number of Expat, using m4's esyscmd() command to run
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dnl the command at m4-generation time. This allows us to create an m4
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dnl symbol holding the correct version number. AC_INIT() requires the
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dnl version number at m4-time, rather than when ./configure is run, so
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dnl all this must happen as part of m4, not as part of the shell code
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dnl contained in ./configure.
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dnl
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dnl NOTE: esyscmd() is a GNU M4 extension. Thus, we wrap it in an appropriate
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dnl test. I believe this test will work, but I don't have a place with non-
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dnl GNU M4 to test it right now.
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define([expat_version], ifdef([__gnu__],
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[esyscmd(conftools/get-version.sh lib/expat.h)],
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[2.2.x]))
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AC_INIT(expat, expat_version, expat-bugs@libexpat.org)
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undefine([expat_version])
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AC_CONFIG_SRCDIR(Makefile.in)
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AC_CONFIG_AUX_DIR(conftools)
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AC_CONFIG_MACRO_DIR([m4])
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dnl
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dnl Increment LIBREVISION if source code has changed at all
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dnl
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dnl If the API has changed, increment LIBCURRENT and set LIBREVISION to 0
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dnl
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dnl If the API changes compatibly (i.e. simply adding a new function
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dnl without changing or removing earlier interfaces), then increment LIBAGE.
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dnl
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dnl If the API changes incompatibly set LIBAGE back to 0
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dnl
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LIBCURRENT=7 # sync
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LIBREVISION=4 # with
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LIBAGE=6 # CMakeLists.txt!
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AC_CONFIG_HEADER(expat_config.h)
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sinclude(conftools/ac_c_bigendian_cross.m4)
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AC_LIBTOOL_WIN32_DLL
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AC_PROG_LIBTOOL
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AC_SUBST(LIBCURRENT)
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AC_SUBST(LIBREVISION)
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AC_SUBST(LIBAGE)
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dnl Checks for programs.
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AC_PROG_CC_C99
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AC_PROG_CXX
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AC_PROG_INSTALL
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if test "$GCC" = yes ; then
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dnl
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dnl Be careful about adding the -fexceptions option; some versions of
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dnl GCC don't support it and it causes extra warnings that are only
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dnl distracting; avoid.
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dnl
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OLDCFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wstrict-prototypes"
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CFLAGS="$OLDCFLAGS -fexceptions"
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AC_MSG_CHECKING(whether $CC accepts -fexceptions)
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AC_TRY_LINK( , ,
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AC_MSG_RESULT(yes),
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AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS")
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if test "x$CXXFLAGS" = x ; then
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CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'`
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fi
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CFLAGS="${CFLAGS} -fno-strict-aliasing"
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CXXFLAGS="${CXXFLAGS} -fno-strict-aliasing"
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LDFLAGS="${LDFLAGS} -fno-strict-aliasing"
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fi
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dnl Checks for header files.
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AC_HEADER_STDC
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dnl Checks for typedefs, structures, and compiler characteristics.
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dnl Note: Avoid using AC_C_BIGENDIAN because it does not
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dnl work in a cross compile.
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AC_C_BIGENDIAN_CROSS
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AC_C_CONST
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AC_TYPE_SIZE_T
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AC_CHECK_FUNCS(memmove bcopy)
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AC_ARG_WITH([libbsd], [
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AS_HELP_STRING([--with-libbsd], [utilize libbsd (for arc4random_buf)])
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], [], [with_libbsd=no])
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AS_IF([test "x${with_libbsd}" != xno], [
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AC_CHECK_LIB([bsd], [arc4random_buf], [], [
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AS_IF([test "x${with_libbsd}" = xyes], [
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AC_MSG_ERROR([Enforced use of libbsd cannot be satisfied.])
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])
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])
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])
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AC_MSG_CHECKING([for arc4random_buf (BSD or libbsd)])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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#include <stdlib.h> /* for arc4random_buf on BSD, for NULL */
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#if defined(HAVE_LIBBSD)
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# include <bsd/stdlib.h>
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#endif
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int main() {
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arc4random_buf(NULL, 0U);
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return 0;
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}
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])], [
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AC_DEFINE([HAVE_ARC4RANDOM_BUF], [1],
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[Define to 1 if you have the `arc4random_buf' function.])
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AC_MSG_RESULT([yes])
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], [
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AC_MSG_RESULT([no])
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AC_MSG_CHECKING([for arc4random (BSD, macOS or libbsd)])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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#if defined(HAVE_LIBBSD)
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# include <bsd/stdlib.h>
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#else
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# include <stdlib.h>
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#endif
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int main() {
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arc4random();
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return 0;
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}
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])], [
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AC_DEFINE([HAVE_ARC4RANDOM], [1],
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[Define to 1 if you have the `arc4random' function.])
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AC_MSG_RESULT([yes])
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], [
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AC_MSG_RESULT([no])
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])
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])
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AC_MSG_CHECKING([for getrandom (Linux 3.17+, glibc 2.25+)])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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#include <stdlib.h> /* for NULL */
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#include <sys/random.h>
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int main() {
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return getrandom(NULL, 0U, 0U);
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}
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])], [
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AC_DEFINE([HAVE_GETRANDOM], [1],
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[Define to 1 if you have the `getrandom' function.])
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AC_MSG_RESULT([yes])
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], [
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AC_MSG_RESULT([no])
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AC_MSG_CHECKING([for syscall SYS_getrandom (Linux 3.17+)])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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#include <stdlib.h> /* for NULL */
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#include <unistd.h> /* for syscall */
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#include <sys/syscall.h> /* for SYS_getrandom */
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int main() {
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syscall(SYS_getrandom, NULL, 0, 0);
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return 0;
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}
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])], [
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AC_DEFINE([HAVE_SYSCALL_GETRANDOM], [1],
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[Define to 1 if you have `syscall' and `SYS_getrandom'.])
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AC_MSG_RESULT([yes])
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], [
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AC_MSG_RESULT([no])
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])
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])
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dnl Only needed for xmlwf:
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AC_CHECK_HEADERS(fcntl.h unistd.h)
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AC_TYPE_OFF_T
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AC_FUNC_MMAP
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if test "$ac_cv_func_mmap_fixed_mapped" = "yes"; then
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FILEMAP=unixfilemap
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else
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FILEMAP=readfilemap
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fi
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AC_SUBST(FILEMAP)
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dnl Some basic configuration:
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AC_DEFINE([XML_NS], 1,
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[Define to make XML Namespaces functionality available.])
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AC_DEFINE([XML_DTD], 1,
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[Define to make parameter entity parsing functionality available.])
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AC_ARG_ENABLE([xml-context],
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AS_HELP_STRING([--enable-xml-context @<:@COUNT@:>@],
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[Retain context around the current parse point;
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default is enabled and a size of 1024 bytes])
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AS_HELP_STRING([--disable-xml-context],
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[Do not retain context around the current parse point]),
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[enable_xml_context=${enableval}])
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AS_IF([test "x${enable_xml_context}" != "xno"], [
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AS_IF([test "x${enable_xml_context}" = "xyes" \
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-o "x${enable_xml_context}" = "x"], [
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enable_xml_context=1024
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])
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AC_DEFINE_UNQUOTED([XML_CONTEXT_BYTES], [${enable_xml_context}],
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[Define to specify how much context to retain around the current parse point.])
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])
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AC_CONFIG_FILES([Makefile expat.pc])
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AC_CONFIG_FILES([run.sh], [chmod +x run.sh])
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AC_OUTPUT
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abs_srcdir="`cd $srcdir && pwd`"
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abs_builddir="`pwd`"
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if test "$abs_srcdir" != "$abs_builddir"; then
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make mkdir-init
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fi
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