# configure.ac dnl Process this file with autoconf to produce a configure script. dnl dnl Minor upgrades (compatible ABI): increment the package version dnl (third field in two places below) and set the PNGLIB_RELEASE dnl variable. dnl dnl Major upgrades (incompatible ABI): increment the package major dnl version (second field, or first if desired), set the minor dnl to 0, set PNGLIB_MAJOR below *and* follow the instructions in dnl Makefile.am to upgrade the package name. dnl This is here to prevent earlier autoconf from being used, it dnl should not be necessary to regenerate configure if the time dnl stamps are correct AC_PREREQ(2.59) AC_INIT([libpng], [1.4.5rc01], [png-mng-implement@lists.sourceforge.net]) AM_INIT_AUTOMAKE dnl stop configure from automagically running automake AM_MAINTAINER_MODE dnl Version number stuff here: PNGLIB_VERSION=1.4.5rc01 PNGLIB_MAJOR=1 PNGLIB_MINOR=4 PNGLIB_RELEASE=5 dnl End of version number stuff AC_CONFIG_SRCDIR([pngget.c]) AM_CONFIG_HEADER(config.h) # Checks for programs. AC_PROG_CC AC_PROG_LD AC_PROG_CPP AC_CHECK_TOOL(SED, sed, :) AC_PROG_INSTALL AC_PROG_LN_S AC_PROG_MAKE_SET LT_INIT([win32-dll]) # Checks for header files. AC_HEADER_STDC AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h]) # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T AC_STRUCT_TM # Checks for library functions. AC_FUNC_STRTOD AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc])) AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) ) AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed])) case $host_os in aix*) LIBPNG_DEFINES="-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE";; *) LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;; esac LIBPNG_DEFINES=$LIBPNG_DEFINES AC_SUBST(LIBPNG_DEFINES) AC_MSG_CHECKING([if libraries can be versioned]) # Special case for PE/COFF platforms: ld reports # support for version-script, but doesn't actually # DO anything with it. case $host in *cygwin* | *mingw32* ) have_ld_version_script=no AC_MSG_RESULT(no) ;; * ) GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script` if test "$GLD"; then have_ld_version_script=yes AC_MSG_RESULT(yes) else have_ld_version_script=no AC_MSG_RESULT(no) AC_MSG_WARN(*** You have not enabled versioned symbols.) fi ;; esac AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes") if test "$have_ld_version_script" = "yes"; then AC_MSG_CHECKING([for symbol prefix]) SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \ | ${CPP-${CC-gcc} -E} - 2>&1 \ | ${EGREP-grep} "^PREFIX=" \ | ${SED-sed} "s:^PREFIX=::"` AC_SUBST(SYMBOL_PREFIX) AC_MSG_RESULT($SYMBOL_PREFIX) fi # Substitutions for .in files AC_SUBST(PNGLIB_VERSION) AC_SUBST(PNGLIB_MAJOR) AC_SUBST(PNGLIB_MINOR) AC_SUBST(PNGLIB_RELEASE) # Additional arguments (and substitutions) # Allow the pkg-config directory to be set AC_ARG_WITH(pkgconfigdir, AC_HELP_STRING([--with-pkgconfigdir], [Use the specified pkgconfig dir (default is libdir/pkgconfig)]), [pkgconfigdir=${withval}], [pkgconfigdir='${libdir}/pkgconfig']) AC_SUBST([pkgconfigdir]) AC_MSG_NOTICE([pkgconfig directory is ${pkgconfigdir}]) # Make the *-config binary config scripts optional AC_ARG_WITH(binconfigs, AC_HELP_STRING([--with-binconfigs], [Generate shell libpng-config scripts as well as pkg-config data] [@<:@default=yes@:>@]), [if test "${withval}" = no; then binconfigs= AC_MSG_NOTICE([libpng-config scripts will not be built]) else binconfigs='${binconfigs}' fi], [binconfigs='${binconfigs}']) AC_SUBST([binconfigs]) # Config files, substituting as above AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in]) AC_CONFIG_FILES([libpng-config:libpng-config.in], [chmod +x libpng-config]) AC_OUTPUT