# =========================================================================== # http://www.nongnu.org/autoconf-archive/ax_lib_expat.html # =========================================================================== # # SYNOPSIS # # AX_LIB_EXPAT([MINIMUM-VERSION]) # # DESCRIPTION # # This macro provides tests of availability of Expat XML Parser of # particular version or newer. This macro checks for Expat XML Parser # headers and libraries and defines compilation flags # # Macro supports following options and their values: # # 1) Single-option usage: # # --with-expat -- yes, no, or path to Expat XML Parser # installation prefix # # 2) Three-options usage (all options are required): # # --with-expat=yes # --with-expat-inc -- path to base directory with Expat headers # --with-expat-lib -- linker flags for Expat # # This macro calls: # # AC_SUBST(EXPAT_CFLAGS) # AC_SUBST(EXPAT_LDFLAGS) # AC_SUBST(EXPAT_VERSION) -- only if version requirement is used # # And sets: # # HAVE_EXPAT # # LICENSE # # Copyright (c) 2008 Mateusz Loskot # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. AC_DEFUN([AX_LIB_EXPAT], [ AC_ARG_WITH([expat], AC_HELP_STRING([--with-expat=@<:@ARG@:>@], [use Expat XML Parser from given prefix (ARG=path); check standard prefixes (ARG=yes); disable (ARG=no)] ), [ if test "$withval" = "yes"; then if test -f /usr/local/include/expat.h ; then expat_prefix=/usr/local elif test -f /usr/include/expat.h ; then expat_prefix=/usr else expat_prefix="" fi expat_requested="yes" elif test -d "$withval"; then expat_prefix="$withval" expat_requested="yes" else expat_prefix="" expat_requested="no" fi ], [ dnl Default behavior is implicit yes if test -f /usr/local/include/expat.h ; then expat_prefix=/usr/local elif test -f /usr/include/expat.h ; then expat_prefix=/usr else expat_prefix="" fi ] ) AC_ARG_WITH([expat-inc], AC_HELP_STRING([--with-expat-inc=@<:@DIR@:>@], [path to Expat XML Parser headers] ), [expat_include_dir="$withval"], [expat_include_dir=""] ) AC_ARG_WITH([expat-lib], AC_HELP_STRING([--with-expat-lib=@<:@ARG@:>@], [link options for Expat XML Parser libraries] ), [expat_lib_flags="$withval"], [expat_lib_flags=""] ) EXPAT_CFLAGS="" EXPAT_LDFLAGS="" EXPAT_VERSION="" dnl dnl Collect include/lib paths and flags dnl run_expat_test="no" if test -n "$expat_prefix"; then expat_include_dir="$expat_prefix/include" expat_lib_flags="-L$expat_prefix/lib -lexpat" run_expat_test="yes" elif test "$expat_requested" = "yes"; then if test -n "$expat_include_dir" -a -n "$expat_lib_flags"; then run_expat_test="yes" fi else run_expat_test="no" fi dnl dnl Check Expat XML Parser files dnl if test "$run_expat_test" = "yes"; then saved_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$expat_include_dir" saved_LIBS="$LIBS" LIBS="$LIBS $expat_lib_flags" dnl dnl Check Expat headers dnl AC_MSG_CHECKING([for Expat XML Parser headers in $expat_include_dir]) AC_LANG_PUSH([C++]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM( [[ @%:@include ]], [[]] )], [ EXPAT_CFLAGS="-I$expat_include_dir" expat_header_found="yes" AC_MSG_RESULT([found]) ], [ expat_header_found="no" AC_MSG_RESULT([not found]) ] ) AC_LANG_POP([C++]) dnl dnl Check Expat libraries dnl if test "$expat_header_found" = "yes"; then AC_MSG_CHECKING([for Expat XML Parser libraries]) AC_LANG_PUSH([C++]) AC_LINK_IFELSE([ AC_LANG_PROGRAM( [[ @%:@include ]], [[ XML_Parser p = XML_ParserCreate(NULL); XML_ParserFree(p); p = NULL; ]] )], [ EXPAT_LDFLAGS="$expat_lib_flags" expat_lib_found="yes" AC_MSG_RESULT([found]) ], [ expat_lib_found="no" AC_MSG_RESULT([not found]) ] ) AC_LANG_POP([C++]) fi CPPFLAGS="$saved_CPPFLAGS" LIBS="$saved_LIBS" fi AC_MSG_CHECKING([for Expat XML Parser]) if test "$run_expat_test" = "yes"; then if test "$expat_header_found" = "yes" -a "$expat_lib_found" = "yes"; then AC_SUBST([EXPAT_CFLAGS]) AC_SUBST([EXPAT_LDFLAGS]) HAVE_EXPAT="yes" else HAVE_EXPAT="no" fi AC_MSG_RESULT([$HAVE_EXPAT]) dnl dnl Check Expat version dnl if test "$HAVE_EXPAT" = "yes"; then expat_version_req=ifelse([$1], [], [], [$1]) if test -n "$expat_version_req"; then AC_MSG_CHECKING([if Expat XML Parser version is >= $expat_version_req]) if test -f "$expat_include_dir/expat.h"; then expat_major=`cat $expat_include_dir/expat.h | \ grep '^#define.*XML_MAJOR_VERSION.*[0-9]$' | \ sed -e 's/#define XML_MAJOR_VERSION.//'` expat_minor=`cat $expat_include_dir/expat.h | \ grep '^#define.*XML_MINOR_VERSION.*[0-9]$' | \ sed -e 's/#define XML_MINOR_VERSION.//'` expat_revision=`cat $expat_include_dir/expat.h | \ grep '^#define.*XML_MICRO_VERSION.*[0-9]$' | \ sed -e 's/#define XML_MICRO_VERSION.//'` EXPAT_VERSION="$expat_major.$expat_minor.$expat_revision" AC_SUBST([EXPAT_VERSION]) dnl Decompose required version string and calculate numerical representation expat_version_req_major=`expr $expat_version_req : '\([[0-9]]*\)'` expat_version_req_minor=`expr $expat_version_req : '[[0-9]]*\.\([[0-9]]*\)'` expat_version_req_revision=`expr $expat_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'` if test "x$expat_version_req_revision" = "x"; then expat_version_req_revision="0" fi expat_version_req_number=`expr $expat_version_req_major \* 10000 \ \+ $expat_version_req_minor \* 100 \ \+ $expat_version_req_revision` dnl Calculate numerical representation of detected version expat_version_number=`expr $expat_major \* 10000 \ \+ $expat_minor \* 100 \ \+ $expat_revision` expat_version_check=`expr $expat_version_number \>\= $expat_version_req_number` if test "$expat_version_check" = "1"; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) AC_MSG_WARN([Found Expat XML Parser $EXPAT_VERSION, which is older than required. Possible compilation failure.]) fi else AC_MSG_RESULT([no]) AC_MSG_WARN([Missing expat.h header. Unable to determine Expat version.]) fi fi fi else HAVE_EXPAT="no" AC_MSG_RESULT([$HAVE_EXPAT]) if test "$expat_requested" = "yes"; then AC_MSG_WARN([Expat XML Parser support requested but headers or library not found. Specify valid prefix of Expat using --with-expat=@<:@DIR@:>@ or provide include directory and linker flags using --with-expat-inc and --with-expat-lib]) fi fi ])