configure.ac revision 1.1.1.3
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 [2.2.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 # sync 49LIBREVISION=3 # with 50LIBAGE=6 # CMakeLists.txt! 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 if test "x$CXXFLAGS" = x ; then 81 CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'` 82 fi 83 84 CFLAGS="${CFLAGS} -fno-strict-aliasing" 85 CXXFLAGS="${CXXFLAGS} -fno-strict-aliasing" 86 LDFLAGS="${LDFLAGS} -fno-strict-aliasing" 87fi 88 89dnl Checks for header files. 90AC_HEADER_STDC 91 92dnl Checks for typedefs, structures, and compiler characteristics. 93 94dnl Note: Avoid using AC_C_BIGENDIAN because it does not 95dnl work in a cross compile. 96AC_C_BIGENDIAN_CROSS 97 98AC_C_CONST 99AC_TYPE_SIZE_T 100AC_CHECK_FUNCS(memmove bcopy) 101 102 103AC_ARG_WITH([libbsd], [ 104AS_HELP_STRING([--with-libbsd], [utilize libbsd (for arc4random_buf)]) 105], [], [with_libbsd=no]) 106AS_IF([test "x${with_libbsd}" != xno], [ 107 AC_CHECK_LIB([bsd], [arc4random_buf], [], [ 108 AS_IF([test "x${with_libbsd}" = xyes], [ 109 AC_MSG_ERROR([Enforced use of libbsd cannot be satisfied.]) 110 ]) 111 ]) 112]) 113AC_MSG_CHECKING([for arc4random_buf (BSD or libbsd)]) 114AC_LINK_IFELSE([AC_LANG_SOURCE([ 115 #include <stdlib.h> /* for arc4random_buf on BSD, for NULL */ 116 #if defined(HAVE_LIBBSD) 117 # include <bsd/stdlib.h> 118 #endif 119 int main() { 120 arc4random_buf(NULL, 0U); 121 return 0; 122 } 123])], [ 124 AC_DEFINE([HAVE_ARC4RANDOM_BUF], [1], 125 [Define to 1 if you have the `arc4random_buf' function.]) 126 AC_MSG_RESULT([yes]) 127], [ 128 AC_MSG_RESULT([no]) 129]) 130 131 132AC_MSG_CHECKING([for getrandom (Linux 3.17+, glibc 2.25+)]) 133AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 134 #include <stdlib.h> /* for NULL */ 135 #include <sys/random.h> 136 int main() { 137 return getrandom(NULL, 0U, 0U); 138 } 139])], [ 140 AC_DEFINE([HAVE_GETRANDOM], [1], 141 [Define to 1 if you have the `getrandom' function.]) 142 AC_MSG_RESULT([yes]) 143], [ 144 AC_MSG_RESULT([no]) 145 146 AC_MSG_CHECKING([for syscall SYS_getrandom (Linux 3.17+)]) 147 AC_LINK_IFELSE([AC_LANG_SOURCE([ 148 #include <stdlib.h> /* for NULL */ 149 #include <unistd.h> /* for syscall */ 150 #include <sys/syscall.h> /* for SYS_getrandom */ 151 int main() { 152 syscall(SYS_getrandom, NULL, 0, 0); 153 return 0; 154 } 155 ])], [ 156 AC_DEFINE([HAVE_SYSCALL_GETRANDOM], [1], 157 [Define to 1 if you have `syscall' and `SYS_getrandom'.]) 158 AC_MSG_RESULT([yes]) 159 ], [ 160 AC_MSG_RESULT([no]) 161 ]) 162]) 163 164 165dnl Only needed for xmlwf: 166AC_CHECK_HEADERS(fcntl.h unistd.h) 167AC_TYPE_OFF_T 168AC_FUNC_MMAP 169 170if test "$ac_cv_func_mmap_fixed_mapped" = "yes"; then 171 FILEMAP=unixfilemap 172else 173 FILEMAP=readfilemap 174fi 175AC_SUBST(FILEMAP) 176 177dnl Needed for the test support code; this was found at 178dnl http://lists.gnu.org/archive/html/bug-autoconf/2002-07/msg00028.html 179 180# AC_CPP_FUNC 181# ------------------ # 182# Checks to see if ANSI C99 CPP variable __func__ works. 183# If not, perhaps __FUNCTION__ works instead. 184# If not, we'll just define __func__ to "". 185AC_DEFUN([AC_CPP_FUNC], 186[AC_REQUIRE([AC_PROG_CC_STDC])dnl 187AC_CACHE_CHECK([for an ANSI C99-conforming __func__], ac_cv_cpp_func, 188[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], 189[[const char *foo = __func__;]])], 190 [ac_cv_cpp_func=yes], 191 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], 192[[const char *foo = __FUNCTION__;]])], 193 [ac_cv_cpp_func=__FUNCTION__], 194 [ac_cv_cpp_func=no])])]) 195if test $ac_cv_cpp_func = __FUNCTION__; then 196 AC_DEFINE(__func__,__FUNCTION__, 197 [Define to __FUNCTION__ or "" if `__func__' does not conform to 198ANSI C.]) 199elif test $ac_cv_cpp_func = no; then 200 AC_DEFINE(__func__,"", 201 [Define to __FUNCTION__ or "" if `__func__' does not conform to 202ANSI C.]) 203fi 204])# AC_CPP_FUNC 205 206AC_CPP_FUNC 207 208 209dnl Some basic configuration: 210AC_DEFINE([XML_NS], 1, 211 [Define to make XML Namespaces functionality available.]) 212AC_DEFINE([XML_DTD], 1, 213 [Define to make parameter entity parsing functionality available.]) 214 215AC_ARG_ENABLE([xml-context], 216 AS_HELP_STRING([--enable-xml-context @<:@COUNT@:>@], 217 [Retain context around the current parse point; 218 default is enabled and a size of 1024 bytes]) 219AS_HELP_STRING([--disable-xml-context], 220 [Do not retain context around the current parse point]), 221 [enable_xml_context=${enableval}]) 222AS_IF([test "x${enable_xml_context}" != "xno"], [ 223 AS_IF([test "x${enable_xml_context}" == "xyes" \ 224 -o "x${enable_xml_context}" == "x"], [ 225 enable_xml_context=1024 226 ]) 227 AC_DEFINE_UNQUOTED([XML_CONTEXT_BYTES], [${enable_xml_context}], 228 [Define to specify how much context to retain around the current parse point.]) 229]) 230 231AC_CONFIG_FILES([Makefile expat.pc]) 232AC_CONFIG_FILES([run.sh], [chmod +x run.sh]) 233AC_OUTPUT 234 235abs_srcdir="`cd $srcdir && pwd`" 236abs_builddir="`pwd`" 237if test "$abs_srcdir" != "$abs_builddir"; then 238 make mkdir-init 239fi 240