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 2.58 or newer 14 AC_PREREQ(2.58) 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 [2.2.x])) 29 AC_INIT(expat, expat_version, expat-bugs (a] libexpat.org) 30 undefine([expat_version]) 31 32 AC_CONFIG_SRCDIR(Makefile.in) 33 AC_CONFIG_AUX_DIR(conftools) 34 AM_INIT_AUTOMAKE 35 AC_CONFIG_MACRO_DIR([m4]) 36 37 38 dnl 39 dnl Increment LIBREVISION if source code has changed at all 40 dnl 41 dnl If the API has changed, increment LIBCURRENT and set LIBREVISION to 0 42 dnl 43 dnl If the API changes compatibly (i.e. simply adding a new function 44 dnl without changing or removing earlier interfaces), then increment LIBAGE. 45 dnl 46 dnl If the API changes incompatibly set LIBAGE back to 0 47 dnl 48 49 LIBCURRENT=7 # sync 50 LIBREVISION=7 # with 51 LIBAGE=6 # CMakeLists.txt! 52 53 CPPFLAGS="${CPPFLAGS} -DHAVE_EXPAT_CONFIG_H" 54 AC_CONFIG_HEADER(expat_config.h) 55 56 sinclude(conftools/ac_c_bigendian_cross.m4) 57 58 AC_LIBTOOL_WIN32_DLL 59 AC_PROG_LIBTOOL 60 61 AC_SUBST(LIBCURRENT) 62 AC_SUBST(LIBREVISION) 63 AC_SUBST(LIBAGE) 64 65 dnl Checks for programs. 66 AC_PROG_CC_C99 67 AC_PROG_CXX 68 AC_PROG_INSTALL 69 70 if test "$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 $CC accepts -fexceptions) 79 AC_TRY_LINK( , , 80 AC_MSG_RESULT(yes), 81 AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS") 82 if test "x$CXXFLAGS" = x ; then 83 CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'` 84 fi 85 86 CFLAGS="${CFLAGS} -fno-strict-aliasing" 87 CXXFLAGS="${CXXFLAGS} -fno-strict-aliasing" 88 LDFLAGS="${LDFLAGS} -fno-strict-aliasing" 89 fi 90 91 dnl Checks for header files. 92 AC_HEADER_STDC 93 94 dnl Checks for typedefs, structures, and compiler characteristics. 95 96 dnl Note: Avoid using AC_C_BIGENDIAN because it does not 97 dnl work in a cross compile. 98 AC_C_BIGENDIAN_CROSS 99 100 AC_C_CONST 101 AC_TYPE_SIZE_T 102 AC_CHECK_FUNCS(memmove bcopy) 103 104 105 AC_ARG_WITH([xmlwf], [ 106 AS_HELP_STRING([--without-xmlwf], [do not build xmlwf])], [], [with_xmlwf=yes]) 107 AM_CONDITIONAL([WITH_XMLWF], [test x${with_xmlwf} = xyes]) 108 109 AM_CONDITIONAL([MINGW], [echo -- "${host}" | fgrep -q mingw]) 110 AM_CONDITIONAL([UNICODE], [echo -- "${CPPFLAGS}${CFLAGS}" | fgrep -q XML_UNICODE]) 111 112 113 AC_ARG_WITH([libbsd], [ 114 AS_HELP_STRING([--with-libbsd], [utilize libbsd (for arc4random_buf)]) 115 ], [], [with_libbsd=no]) 116 AS_IF([test "x${with_libbsd}" != xno], [ 117 AC_CHECK_LIB([bsd], [arc4random_buf], [], [ 118 AS_IF([test "x${with_libbsd}" = xyes], [ 119 AC_MSG_ERROR([Enforced use of libbsd cannot be satisfied.]) 120 ]) 121 ]) 122 ]) 123 AC_MSG_CHECKING([for arc4random_buf (BSD or libbsd)]) 124 AC_LINK_IFELSE([AC_LANG_SOURCE([ 125 #include <stdlib.h> /* for arc4random_buf on BSD, for NULL */ 126 #if defined(HAVE_LIBBSD) 127 # include <bsd/stdlib.h> 128 #endif 129 int main() { 130 arc4random_buf(NULL, 0U); 131 return 0; 132 } 133 ])], [ 134 AC_DEFINE([HAVE_ARC4RANDOM_BUF], [1], 135 [Define to 1 if you have the `arc4random_buf' function.]) 136 AC_MSG_RESULT([yes]) 137 ], [ 138 AC_MSG_RESULT([no]) 139 140 AC_MSG_CHECKING([for arc4random (BSD, macOS or libbsd)]) 141 AC_LINK_IFELSE([AC_LANG_SOURCE([ 142 #if defined(HAVE_LIBBSD) 143 # include <bsd/stdlib.h> 144 #else 145 # include <stdlib.h> 146 #endif 147 int main() { 148 arc4random(); 149 return 0; 150 } 151 ])], [ 152 AC_DEFINE([HAVE_ARC4RANDOM], [1], 153 [Define to 1 if you have the `arc4random' function.]) 154 AC_MSG_RESULT([yes]) 155 ], [ 156 AC_MSG_RESULT([no]) 157 ]) 158 ]) 159 160 161 AC_MSG_CHECKING([for getrandom (Linux 3.17+, glibc 2.25+)]) 162 AC_LINK_IFELSE([AC_LANG_SOURCE([ 163 #include <stdlib.h> /* for NULL */ 164 #include <sys/random.h> 165 int main() { 166 return getrandom(NULL, 0U, 0U); 167 } 168 ])], [ 169 AC_DEFINE([HAVE_GETRANDOM], [1], 170 [Define to 1 if you have the `getrandom' function.]) 171 AC_MSG_RESULT([yes]) 172 ], [ 173 AC_MSG_RESULT([no]) 174 175 AC_MSG_CHECKING([for syscall SYS_getrandom (Linux 3.17+)]) 176 AC_LINK_IFELSE([AC_LANG_SOURCE([ 177 #include <stdlib.h> /* for NULL */ 178 #include <unistd.h> /* for syscall */ 179 #include <sys/syscall.h> /* for SYS_getrandom */ 180 int main() { 181 syscall(SYS_getrandom, NULL, 0, 0); 182 return 0; 183 } 184 ])], [ 185 AC_DEFINE([HAVE_SYSCALL_GETRANDOM], [1], 186 [Define to 1 if you have `syscall' and `SYS_getrandom'.]) 187 AC_MSG_RESULT([yes]) 188 ], [ 189 AC_MSG_RESULT([no]) 190 ]) 191 ]) 192 193 194 dnl Only needed for xmlwf: 195 AC_CHECK_HEADERS(fcntl.h unistd.h) 196 AC_TYPE_OFF_T 197 AC_FUNC_MMAP 198 199 if test "$ac_cv_func_mmap_fixed_mapped" = "yes"; then 200 FILEMAP=unixfilemap 201 else 202 FILEMAP=readfilemap 203 fi 204 AC_SUBST(FILEMAP) 205 206 207 dnl Some basic configuration: 208 AC_DEFINE([XML_NS], 1, 209 [Define to make XML Namespaces functionality available.]) 210 AC_DEFINE([XML_DTD], 1, 211 [Define to make parameter entity parsing functionality available.]) 212 AC_DEFINE([XML_DEV_URANDOM], 1, 213 [Define to include code reading entropy from `/dev/urandom'.]) 214 215 AC_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]) 219 AS_HELP_STRING([--disable-xml-context], 220 [Do not retain context around the current parse point]), 221 [enable_xml_context=${enableval}]) 222 AS_IF([test "x${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], [${enable_xml_context}], 228 [Define to specify how much context to retain around the current parse point.]) 229 ]) 230 231 AC_ARG_WITH([docbook], [AS_HELP_STRING([--with-docbook], 232 [enforce XML to man page compilation @<:@default=check@:>@]) 233 AS_HELP_STRING([--without-docbook], 234 [skip XML to man page compilation @<:@default=check@:>@])], 235 [], 236 [with_docbook=check]) 237 238 AC_ARG_VAR([DOCBOOK_TO_MAN], [docbook2x-man command]) 239 AS_IF([test "x$with_docbook" != xno], 240 [AC_CHECK_PROGS([DOCBOOK_TO_MAN], [docbook2x-man docbook2man docbook-to-man], 241 [if test "x$with_docbook" != xcheck; then 242 AC_MSG_ERROR([Required program 'docbook2x-man' not found.])])]) 243 244 AM_CONDITIONAL(WITH_DOCBOOK, [test x${DOCBOOK_TO_MAN} != x]) 245 246 AC_CONFIG_FILES([Makefile expat.pc]) 247 AC_CONFIG_FILES([ 248 doc/Makefile 249 examples/Makefile 250 lib/Makefile 251 tests/Makefile 252 tests/benchmark/Makefile 253 xmlwf/Makefile 254 ]) 255 AC_CONFIG_FILES([run.sh], [chmod +x run.sh]) 256 AC_OUTPUT 257
