d6cd0e4769
Autodetect works by default for getrandom and sysgetrandom. With the these options user can use the detected functions or ignore them.
309 lines
11 KiB
Plaintext
309 lines
11 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 2.69 or newer.
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AC_PREREQ(2.69)
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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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m4_define([expat_version],
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m4_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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m4_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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AC_CANONICAL_HOST
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AM_INIT_AUTOMAKE
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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=9 # with
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LIBAGE=6 # CMakeLists.txt!
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AX_APPEND_FLAG([-DHAVE_EXPAT_CONFIG_H], [CPPFLAGS])
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AC_CONFIG_HEADER([expat_config.h])
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AM_PROG_AR
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AC_PROG_INSTALL
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AC_PROG_LN_S
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AC_PROG_MAKE_SET
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LT_PREREQ([2.4])
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LT_INIT([win32-dll])
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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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AC_LANG([C])
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AC_PROG_CC_C99
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AS_IF([test "$GCC" = yes],
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[AX_APPEND_COMPILE_FLAGS([-Wall -Wextra], [CFLAGS])
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dnl Be careful about adding the -fexceptions option; some versions of
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dnl GCC don't support it and it causes extra warnings that are only
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dnl distracting; avoid.
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AX_APPEND_COMPILE_FLAGS([-fexceptions], [CFLAGS])
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AX_APPEND_COMPILE_FLAGS([-fno-strict-aliasing -Wmissing-prototypes -Wstrict-prototypes], [CFLAGS])
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AX_APPEND_COMPILE_FLAGS([-pedantic -Wduplicated-cond -Wduplicated-branches -Wlogical-op], [CFLAGS])
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AX_APPEND_COMPILE_FLAGS([-Wrestrict -Wnull-dereference -Wjump-misses-init -Wdouble-promotion], [CFLAGS])
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AX_APPEND_COMPILE_FLAGS([-Wshadow -Wformat=2 -Wmisleading-indentation], [CFLAGS])])
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AC_LANG_PUSH([C++])
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AC_PROG_CXX
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AS_IF([test "$GCC" = yes],
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[AX_APPEND_COMPILE_FLAGS([-Wall -Wextra], [CXXFLAGS])
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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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AX_APPEND_COMPILE_FLAGS([-fexceptions], [CXXFLAGS])
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AX_APPEND_COMPILE_FLAGS([-fno-strict-aliasing], [CXXFLAGS])])
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AC_LANG_POP([C++])
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AS_IF([test "$GCC" = yes],
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[AX_APPEND_LINK_FLAGS([-fno-strict-aliasing],[LDFLAGS])])
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EXPATCFG_COMPILER_SUPPORTS_VISIBILITY([
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AX_APPEND_FLAG([-fvisibility=hidden], [CFLAGS])
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AX_APPEND_FLAG([-DXML_ENABLE_VISIBILITY=1], [CFLAGS])])
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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 We define BYTEORDER to 1234 when the platform is little endian; it
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dnl defines it to 4321 when the platform is big endian. We also define
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dnl WORDS_BIGENDIAN to 1 when the platform is big endian.
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dnl
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dnl A long time ago (early 2000 years) AC_C_BIGENDIAN was considered
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dnl wrong when cross compiling, now (2018, GNU Autoconf 2.69) we assume
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dnl it is fine.
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AC_C_BIGENDIAN([AC_DEFINE([WORDS_BIGENDIAN], 1)
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AS_VAR_SET([BYTEORDER], 4321)],
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[AS_VAR_SET([BYTEORDER], 1234)])
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AC_DEFINE_UNQUOTED([BYTEORDER], $BYTEORDER, [1234 = LILENDIAN, 4321 = BIGENDIAN])
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AC_C_CONST
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AC_TYPE_SIZE_T
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AC_ARG_WITH([xmlwf],
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[AS_HELP_STRING([--without-xmlwf], [do not build xmlwf])], [],
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[with_xmlwf=yes])
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AM_CONDITIONAL([WITH_XMLWF], [test x${with_xmlwf} = xyes])
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AC_ARG_WITH([examples], [
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AS_HELP_STRING([--without-examples], [do not build examples @<:@default=included@:>@])], [], [with_examples=yes])
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AM_CONDITIONAL([WITH_EXAMPLES], [test x${with_examples} = xyes])
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AC_ARG_WITH([tests], [
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AS_HELP_STRING([--without-tests], [do not build tests @<:@default=included@:>@])], [], [with_tests=yes])
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AM_CONDITIONAL([WITH_TESTS], [test x${with_tests} = xyes])
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AS_VAR_SET([EXPATCFG_ON_MINGW],[no])
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AS_CASE("${host_os}",
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[mingw*],
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[AS_VAR_SET([EXPATCFG_ON_MINGW],[yes])
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AC_MSG_NOTICE([detected OS: MinGW])])
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AM_CONDITIONAL([MINGW], [test x${EXPATCFG_ON_MINGW} = xyes])
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AM_CONDITIONAL([UNICODE], [echo -- "${CPPFLAGS}${CFLAGS}" | ${FGREP} XML_UNICODE >/dev/null])
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AC_ARG_WITH([libbsd],
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[AS_HELP_STRING([--with-libbsd], [utilize libbsd (for arc4random_buf)])],
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[],
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[with_libbsd=no])
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AS_IF([test "x${with_libbsd}" != xno],
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[AC_CHECK_LIB([bsd],
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[arc4random_buf],
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[],
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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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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], [Define to 1 if you have the `arc4random_buf' function.])
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AC_MSG_RESULT([yes])],
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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], [Define to 1 if you have the `arc4random' function.])
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AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])])])
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AC_ARG_WITH([getrandom],
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[AS_HELP_STRING([--with-getrandom],
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[enforce the use of getrandom function in the system @<:@default=check@:>@])
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AS_HELP_STRING([--without-getrandom],
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[skip auto detect of getrandom @<:@default=check@:>@])],
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[],
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[with_getrandom=check])
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AS_IF([test "x$with_getrandom" != xno],
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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], [Define to 1 if you have the `getrandom' function.])
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AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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AS_IF([test "x$with_getrandom" = xyes],
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[AC_MSG_ERROR([enforced the use of getrandom --with-getrandom, but not detected])])])])
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AC_ARG_WITH([sys_getrandom],
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[AS_HELP_STRING([--with-sys-getrandom],
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[enforce the use of syscall SYS_getrandom function in the system @<:@default=check@:>@])
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AS_HELP_STRING([--without-sys-getrandom],
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[skip auto detect of syscall SYS_getrandom @<:@default=check@:>@])],
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[],
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[with_sys_getrandom=check])
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AS_IF([test "x$with_sys_getrandom" != xno],
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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], [Define to 1 if you have `syscall' and `SYS_getrandom'.])
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AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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AS_IF([test "x$with_sys_getrandom" = xyes],
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[AC_MSG_ERROR([enforced the use of syscall SYS_getrandom --with-sys-getrandom, but not detected])])])])
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dnl Only needed for xmlwf:
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AC_CHECK_HEADERS(fcntl.h unistd.h)
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AC_TYPE_OFF_T
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AC_FUNC_MMAP
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AS_IF([test "$ac_cv_func_mmap_fixed_mapped" = "yes"],
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[AS_VAR_SET(FILEMAP,unixfilemap)],
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[AS_VAR_SET(FILEMAP,readfilemap)])
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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_DEFINE([XML_DEV_URANDOM], 1,
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[Define to include code reading entropy from `/dev/urandom'.])
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AC_ARG_ENABLE([xml-attr-info],
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[AS_HELP_STRING([--enable-xml-attr-info],
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[Enable retrieving the byte offsets for attribute names and values
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@<:@default=no@:>@])], ,
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[enable_xml_attr_info=no])
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AS_IF([test "x${enable_xml_attr_info}" = "xyes"],
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[AC_DEFINE([XML_ATTR_INFO], 1,
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[Define to allow retrieving the byte offsets for attribute names and values.])])
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AC_ARG_ENABLE([xml-context],
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AS_HELP_STRING([--enable-xml-context @<:@COUNT@:>@],
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[Retain context around the current parse point;
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default is enabled and a size of 1024 bytes])
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AS_HELP_STRING([--disable-xml-context],
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[Do not retain context around the current parse point]),
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[enable_xml_context=${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${enable_xml_context}" = "x"],
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[AS_VAR_SET(enable_xml_context,1024)])
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AC_DEFINE_UNQUOTED([XML_CONTEXT_BYTES], [${enable_xml_context}],
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[Define to specify how much context to retain around the current parse point.])])
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AC_ARG_WITH([docbook],
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[AS_HELP_STRING([--with-docbook],
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[enforce XML to man page compilation @<:@default=check@:>@])
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AS_HELP_STRING([--without-docbook],
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[skip XML to man page compilation @<:@default=check@:>@])], [],
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[with_docbook=check])
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AC_ARG_VAR([DOCBOOK_TO_MAN], [docbook2x-man command])
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AS_IF([test "x$with_docbook" != xno],
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[AC_CHECK_PROGS([DOCBOOK_TO_MAN], [docbook2x-man db2x_docbook2man docbook2man docbook-to-man])])
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AS_IF([test "x${DOCBOOK_TO_MAN}" = x -a "x$with_docbook" = xyes],
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[AC_MSG_ERROR([Required program 'docbook2x-man' not found.])])
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AS_IF([test "x${DOCBOOK_TO_MAN}" != x -a "x$with_docbook" != xno],
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[AS_IF([${DOCBOOK_TO_MAN} --help | grep -i -q -F sgmlbase],
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[AC_MSG_ERROR([Your local ${DOCBOOK_TO_MAN} was found to work with SGML rather
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than XML. Please install docbook2X and use variable DOCBOOK_TO_MAN to point
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configure to command docbook2x-man of docbook2X.
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Or use DOCBOOK_TO_MAN="xmlto man --skip-validation" if you have xmlto around.
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You can also configure using --without-docbook if you can do without a man
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page for xmlwf.])])])
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AM_CONDITIONAL(WITH_DOCBOOK, [test "x${DOCBOOK_TO_MAN}" != x])
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AC_CONFIG_FILES([Makefile]
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[expat.pc]
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[doc/Makefile]
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[examples/Makefile]
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[lib/Makefile]
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[tests/Makefile]
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[tests/benchmark/Makefile]
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[xmlwf/Makefile])
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AC_CONFIG_FILES([run.sh], [chmod +x run.sh])
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AC_OUTPUT
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