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dnl
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dnl Configuration script for Mini-XML, a small XML file parsing library.
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dnl
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dnl https://www.msweet.org/mxml
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dnl
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dnl Copyright © 2003-2024 by Michael R Sweet.
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dnl
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dnl Licensed under Apache License v2.0. See the file "LICENSE" for more
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dnl information.
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dnl
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dnl We need at least autoconf 2.70 for --runstatedir...
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AC_PREREQ([2.70])
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dnl Package name and version...
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AC_INIT([Mini-XML], [4.0b1], [https://github.com/michaelrsweet/mxml/issues], [mxml], [https://www.msweet.org/mxml])
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AC_CONFIG_HEADERS([config.h])
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MXML_VERSION="AC_PACKAGE_VERSION"
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AC_SUBST([MXML_VERSION])
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AC_DEFINE_UNQUOTED([MXML_VERSION], "Mini-XML v$MXML_VERSION", [Version number])
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dnl This line is provided to ensure that you don't run the autoheader program
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dnl against this project. Doing so is completely unsupported and WILL cause
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dnl problems!
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AH_TOP([#error "Somebody ran autoheader on this project which is unsupported and WILL cause problems."])
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dnl Get the build and host platforms and split the host_os value
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AC_CANONICAL_BUILD
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AC_CANONICAL_HOST
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[host_os_name=`echo $host_os | sed -e '1,$s/[0-9.]*$//g'`]
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[host_os_version="$(echo $host_os | sed -e '1,$s/^[^0-9.]*//g' | awk -F. '{print $1 $2}')"]
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# Linux often does not yield an OS version we can use...
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AS_IF([test "x$host_os_version" = x], [
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host_os_version="0"
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])
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dnl Compiler options...
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CFLAGS="${CFLAGS:=}"
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CPPFLAGS="${CPPFLAGS:=}"
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DSO=""
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DSOFLAGS="${DSOFLAGS:=}"
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LDFLAGS="${LDFLAGS:=}"
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LIBS="${LIBS:=}"
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OPTIM="${OPTIM:=}"
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AC_SUBST([DSO])
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AC_SUBST([DSOFLAGS])
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AC_SUBST([LDFLAGS])
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AC_SUBST([OPTIM])
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dnl Standard programs...
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AC_PROG_CC
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AC_PROG_RANLIB
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AC_PATH_PROG([AR], [ar])
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AC_PATH_PROGS([CODE_SIGN], [codesign true])
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AC_MSG_CHECKING([for install-sh script])
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INSTALL="`pwd`/install-sh"
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AC_SUBST([INSTALL])
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AC_MSG_RESULT([using $INSTALL])
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AC_PATH_PROGS([LDCONFIG],ldconfig true)
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AC_PATH_PROG([MKDIR], [mkdir])
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AC_PATH_PROG([RM], [rm])
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AC_PATH_PROG([RMDIR], [rmdir])
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AC_PATH_PROG([LN], [ln])
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dnl Figure out the correct "ar" command flags...
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AS_IF([test "$ac_cv_prog_ranlib" = ":"], [
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ARFLAGS="crs"
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], [
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ARFLAGS="cr"
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])
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AC_SUBST([ARFLAGS])
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dnl Inline functions...
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AC_C_INLINE
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dnl Check for "long long" support...
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AC_TYPE_LONG_LONG_INT
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dnl Threading support
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AC_ARG_ENABLE([threads], AS_HELP_STRING([--disable-threads], [disable multi-threading support, default=no]))
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have_pthread=no
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AS_IF([test "x$enable_threads" != xno], [
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AC_CHECK_HEADER([pthread.h], [
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AC_DEFINE([HAVE_PTHREAD_H], [Have <pthread.h>?])
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])
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AS_IF([test x$ac_cv_header_pthread_h = xyes], [
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dnl Check various threading options for the platforms we support
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for flag in -lpthreads -lpthread -pthread; do
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AC_MSG_CHECKING([for pthread_create using $flag])
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SAVELIBS="$LIBS"
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LIBS="$flag $LIBS"
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AC_LANG([C])
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AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],[pthread_create(0, 0, 0, 0);])], [
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have_pthread=yes
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], [
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LIBS="$SAVELIBS"
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])
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AS_IF([test x$have_pthread = xyes], [
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AC_MSG_RESULT([yes])
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CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE -D_REENTRANT"
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break
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], [
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AC_MSG_RESULT([no])
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])
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done
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])
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])
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dnl Library targets...
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AC_ARG_ENABLE([static], AS_HELP_STRING([--disable-static], [do not install static library]))
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AC_ARG_ENABLE([shared], AS_HELP_STRING([--disable-shared], [do not install shared library]))
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LIBMXML_STATIC="libmxml.a"
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AS_IF([test x$enable_shared != xno], [
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AS_CASE(["$host_os_name"], [linux* | gnu*], [
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LIBMXML="libmxml.so.2"
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DSO="\$(CC)"
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DSOFLAGS="$DSOFLAGS -Wl,-soname,\`basename \$@\` -shared"
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], [*bsd*], [
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LIBMXML="libmxml.so.2"
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DSO="\$(CC)"
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DSOFLAGS="$DSOFLAGS -Wl,-soname,\`basename \$@\` -shared -lc"
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], [darwin*], [
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LIBMXML="libmxml.2.dylib"
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DSO="\$(CC)"
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DSOFLAGS="$DSOFLAGS -Wl,-no_warn_inits -dynamiclib -lc"
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], [sunos*], [
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LIBMXML="libmxml.so.2"
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DSO="\$(CC)"
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DSOFLAGS="$DSOFLAGS -Wl,-h,\`basename \$@\` -G"
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], [mingw], [
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AC_MSG_RESULT([yes])
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LIBMXML="libmxml2.dll"
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DSO="\$(CC)"
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DSOFLAGS="$DSOFLAGS -shared -Wl,--out-implib,libmxml2.a,--no-undefined,--enable-runtime-pseudo-reloc"
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], [*], [
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AC_MSG_NOTICE([Warning: Shared libraries may not work, trying -shared option.])
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LIBMXML="libmxml.so.2"
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DSO="\$(CC)"
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DSOFLAGS="$DSOFLAGS -Wl,-soname,\`basename \$@\` -shared"
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])
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AS_IF([test x$enable_static != xno], [
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AC_MSG_NOTICE([Installing static libraries...])
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INSTALL_STATIC="install-libmxml.a"
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UNINSTALL_STATIC="uninstall-libmxml.a"
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], [
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INSTALL_STATIC=""
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UNINSTALL_STATIC=""
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])
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], [
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INSTALL_STATIC=""
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LIBMXML="libmxml.a"
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UNINSTALL_STATIC=""
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])
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AC_SUBST([INSTALL_STATIC])
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AC_SUBST([LIBMXML])
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AC_SUBST([LIBMXML_STATIC])
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AC_SUBST([UNINSTALL_STATIC])
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dnl Extra compiler options...
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AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [turn on debugging, default=no]))
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AC_ARG_ENABLE([maintainer], AS_HELP_STRING([--enable-maintainer], [turn on maintainer mode, default=no]))
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AC_ARG_WITH([sanitizer], AS_HELP_STRING([--with-sanitizer], [build with address, leak, memory, thread, or undefined sanitizer, default=no]), [], [with_sanitizer=no])
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AS_IF([test "x$with_sanitizer" = xyes], [
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with_sanitizer="address"
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], [test "$with_sanitizer" != address -a "$with_sanitizer" != leak -a "$with_sanitizer" != memory -a "$with_sanitizer" != no -a "$with_sanitizer" != thread -a "$with_sanitizer" != undefined], [
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AC_MSG_ERROR([Unsupported --with-sanitizer value "$with_sanitizer" specified.])
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])
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AS_IF([test x$enable_debug = xyes], [
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CSFLAGS=""
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OPTIM="$OPTIM -g"
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OPTIONS="-DDEBUG -DDEBUG_GUARDS"
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], [
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CSFLAGS="-o runtime"
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OPTIM="$OPTIM -g -Os"
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OPTIONS=""
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])
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AC_SUBST([CSFLAGS])
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AC_SUBST([OPTIONS])
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WARNINGS=""
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AC_SUBST([WARNINGS])
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AS_IF([test -n "$GCC"], [
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AS_IF([test x$with_sanitizer != xno], [
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# Use -fsanitize=FOO with debugging...
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OPTIM="$OPTIM -fsanitize=$with_sanitizer"
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], [echo "$CPPFLAGS $CFLAGS" | grep -q _FORTIFY_SOURCE], [
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# Don't add _FORTIFY_SOURCE if it is already there
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], [
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# Otherwise use the Fortify enhancements to catch any unbounded
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# string operations...
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CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=3"
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])
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dnl Show all standard warnings + unused variables when compiling...
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WARNINGS="-Wall -Wunused"
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dnl Drop some not-useful/unreliable warnings...
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for warning in char-subscripts deprecated-declarations format-truncation format-y2k switch unused-result; do
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AC_MSG_CHECKING([whether compiler supports -Wno-$warning])
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OLDCFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Wno-$warning -Werror"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
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AC_MSG_RESULT([yes])
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WARNINGS="$WARNINGS -Wno-$warning"
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], [
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AC_MSG_RESULT([no])
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])
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CFLAGS="$OLDCFLAGS"
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done
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dnl Maintainer mode enables -Werror...
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AS_IF([test x$enable_maintainer = xyes], [
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WARNINGS="$WARNINGS -Werror"
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])
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dnl See if PIE options are supported...
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AC_MSG_CHECKING(whether compiler supports -fPIE)
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OLDCFLAGS="$CFLAGS"
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AS_CASE(["$host_os_name"],
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[darwin*], [
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CFLAGS="$CFLAGS -fPIC -fPIE -Wl,-pie"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[
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OLDCFLAGS="-fPIC $OLDCFLAGS"
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LDFLAGS="-fPIE -Wl,-pie $LDFLAGS"
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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])
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], [*], [
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CFLAGS="$CFLAGS -fPIC -fPIE -pie"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[
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OLDCFLAGS="-fPIC $OLDCFLAGS"
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LDFLAGS="-fPIE -pie $LDFLAGS"
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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])
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])
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CFLAGS="$OLDCFLAGS"
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dnl OS-specific compiler options...
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AC_MSG_CHECKING([for OS-specific compiler options])
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AS_CASE(["$host_os_name"], [linux*], [
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# Make sure we get the full set of Linux APIs from the headers...
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CPPFLAGS="$CPPFLAGS -D__USE_MISC -D_GNU_SOURCE"
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# Mark read-only sections as relocatable to random addresses...
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LDFLAGS="$LDFLAGS -Wl,-z,relro,-z,now"
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AC_MSG_RESULT([-D__USE_MISC -D_GNU_SOURCE -Wl,-z,relro,-z,now])
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], [darwin*], [
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# When not building for debug, target macOS 11 or later, "universal"
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# binaries when possible...
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AS_IF([echo "$CPPFLAGS $CFLAGS $LDFLAGS $OPTIM" | grep -q "\\-arch "], [
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# Don't add architecture/min-version flags if they are already present
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AC_MSG_RESULT([none])
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], [echo "$CPPFLAGS $CFLAGS $LDFLAGS $OPTIM" | grep -q "\\-mmacosx-version-"], [
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# Don't add architecture/min-version flags if they are already present
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AC_MSG_RESULT([none])
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], [test "$host_os_version" -ge 200 -a x$enable_debug != xyes], [
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# macOS 11.0 and higher support the Apple Silicon (arm64) CPUs
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OPTIM="$OPTIM -mmacosx-version-min=11.0 -arch x86_64 -arch arm64"
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AC_MSG_RESULT([-mmacosx-version-min=11.0 -arch x86_64 -arch arm64])
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], [
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# Don't add architecture/min-version flags if debug enabled
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AC_MSG_RESULT([none])
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])
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], [*], [
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AC_MSG_RESULT([none])
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])
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])
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dnl Extra linker options...
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AC_ARG_WITH([dsoflags], AS_HELP_STRING([--with-dsoflags=...], [Specify additional DSOFLAGS]), [
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DSOFLAGS="$withval $DSOFLAGS"
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])
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AC_ARG_WITH([ldflags], AS_HELP_STRING([--with-ldflags=...], [Specify additional LDFLAGS]), [
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LDFLAGS="$withval $LDFLAGS"
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])
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dnl Directories...
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AC_ARG_WITH([docdir], AS_HELP_STRING([--with-docdir], [set directory for documentation, default=${prefix}/share/doc/mxml]), [
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docdir="$withval"
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], [
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docdir="NONE"
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])
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AC_SUBST(docdir)
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dnl Determine whether we are cross-compiling...
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AS_IF([test "$build" = "$host"], [
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TARGETS="ALLTARGETS"
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], [
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TARGETS="CROSSTARGETS"
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])
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AC_SUBST([TARGETS])
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dnl Fix installation directories...
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AS_IF([test "$prefix" = NONE], [
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# Default prefix isn't bound until AC_OUTPUT...
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realprefix="/usr/local"
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], [
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realprefix="$prefix"
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])
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AS_IF([test "$datarootdir" = "\${prefix}/share"], [
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AS_IF([test "$prefix" = "/"], [
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datarootdir="/usr/share"
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], [
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datarootdir="$realprefix/share"
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])
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])
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AS_IF([test "$datadir" = "\${prefix}/share"], [
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AS_IF([test "$prefix" = "/"], [
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datadir="/usr/share"
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], [
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datadir="$realprefix/share"
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])
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], [test "$datadir" = "\${datarootdir}"], [
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datadir="$datarootdir"
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])
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dnl pkg-config flags...
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PKGCONFIG_CFLAGS=""
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PKGCONFIG_LIBS="-lmxml"
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AS_IF([test "$realprefix" != "/usr" -a "$realprefix" != "/usr/local"], [
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PKGCONFIG_CFLAGS="-I\${includedir}"
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PKGCONFIG_LIBS="-L\${libdir} $PKGCONFIG_LIBS"
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])
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AC_SUBST([PKGCONFIG_CFLAGS])
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AC_SUBST([PKGCONFIG_LIBS])
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dnl Output generated files...
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AC_CONFIG_FILES([Makefile mxml.pc])
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AC_OUTPUT
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