1# configure.ac 2 3dnl Process this file with autoconf to produce a configure script. 4dnl 5dnl Minor upgrades (compatible ABI): increment the package version 6dnl (third field in two places below) and set the PNGLIB_RELEASE 7dnl variable. 8dnl 9dnl Major upgrades (incompatible ABI): increment the package major 10dnl version (second field, or first if desired), set the minor 11dnl to 0, set PNGLIB_MAJOR below *and* follow the instructions in 12dnl Makefile.am to upgrade the package name. 13 14dnl This is here to prevent earlier autoconf from being used, it 15dnl should not be necessary to regenerate configure if the time 16dnl stamps are correct 17AC_PREREQ(2.59) 18 19dnl Version number stuff here: 20 21AC_INIT([libpng], [1.2.46], [png-mng-implement@lists.sourceforge.net]) 22AM_INIT_AUTOMAKE 23dnl stop configure from automagically running automake 24AM_MAINTAINER_MODE 25 26PNGLIB_VERSION=1.2.46 27PNGLIB_MAJOR=1 28PNGLIB_MINOR=2 29PNGLIB_RELEASE=46 30 31dnl End of version number stuff 32 33AC_CONFIG_SRCDIR([pngget.c]) 34AM_CONFIG_HEADER(config.h) 35 36# Checks for programs. 37AC_PROG_CC 38AC_PROG_LD 39AC_PROG_CPP 40AC_CHECK_TOOL(SED, sed, :) 41AC_LIBTOOL_WIN32_DLL 42AC_PROG_INSTALL 43AC_PROG_LN_S 44AC_PROG_MAKE_SET 45AC_PROG_LIBTOOL 46 47# Checks for header files. 48AC_HEADER_STDC 49AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h]) 50 51# Checks for typedefs, structures, and compiler characteristics. 52AC_C_CONST 53AC_TYPE_SIZE_T 54AC_STRUCT_TM 55 56# Checks for library functions. 57AC_FUNC_STRTOD 58AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc])) 59AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) ) 60AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed])) 61 62case $host_os in 63 aix*) 64 LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE;; 65 *) 66 LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;; 67esac 68AC_MSG_CHECKING( 69 [if assembler code in pnggccrd.c can be compiled without PNG_NO_MMX_CODE]) 70AC_TRY_COMPILE( 71 [#include "$srcdir/pnggccrd.c"], 72 [return 0;], 73 AC_MSG_RESULT(yes) 74 LIBPNG_NO_MMX="", 75 AC_MSG_RESULT(no) 76 LIBPNG_NO_MMX=-DPNG_NO_MMX_CODE) 77LIBPNG_DEFINES=$LIBPNG_DEFINES\ $LIBPNG_NO_MMX 78AC_SUBST(LIBPNG_DEFINES) 79AC_SUBST(LIBPNG_NO_MMX) 80 81AC_MSG_CHECKING([if libraries can be versioned]) 82GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script` 83if test "$GLD"; then 84 have_ld_version_script=yes 85 AC_MSG_RESULT(yes) 86else 87 have_ld_version_script=no 88 AC_MSG_RESULT(no) 89 AC_MSG_WARN(*** You have not enabled versioned symbols.) 90fi 91AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes") 92 93if test "$have_ld_version_script" = "yes"; then 94 AC_MSG_CHECKING([for symbol prefix]) 95 SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \ 96 | ${CPP-${CC-gcc} -E} - 2>&1 \ 97 | ${EGREP-grep} "^PREFIX=" \ 98 | ${SED-sed} "s:^PREFIX=::"` 99 AC_SUBST(SYMBOL_PREFIX) 100 AC_MSG_RESULT($SYMBOL_PREFIX) 101fi 102 103# Substitutions for .in files 104AC_SUBST(PNGLIB_VERSION) 105AC_SUBST(PNGLIB_MAJOR) 106AC_SUBST(PNGLIB_MINOR) 107AC_SUBST(PNGLIB_RELEASE) 108 109# Additional arguments (and substitutions) 110# Allow the pkg-config directory to be set 111AC_ARG_WITH(pkgconfigdir, 112 AC_HELP_STRING([--with-pkgconfigdir], 113 [Use the specified pkgconfig dir (default is libdir/pkgconfig)]), 114 [pkgconfigdir=${withval}], 115 [pkgconfigdir='${libdir}/pkgconfig']) 116 117AC_SUBST([pkgconfigdir]) 118AC_MSG_NOTICE([pkgconfig directory is ${pkgconfigdir}]) 119 120# Make the *-config binary config scripts optional 121AC_ARG_WITH(binconfigs, 122 AC_HELP_STRING([--with-binconfigs], 123 [Generate shell libpng-config scripts as well as pkg-config data] 124 [@<:@default=yes@:>@]), 125 [if test "${withval}" = no; then 126 binconfigs= 127 AC_MSG_NOTICE([libpng-config scripts will not be built]) 128 else 129 binconfigs='${binconfigs}' 130 fi], 131 [binconfigs='${binconfigs}']) 132AC_SUBST([binconfigs]) 133 134# Allow the old version number library, libpng.so, to be removed from 135# the build 136AC_ARG_WITH(libpng-compat, 137 AC_HELP_STRING([--with-libpng-compat], 138 [Generate the obsolete libpng.so library @<:@default=yes@:>@]), 139 [if test "${withval}" = no; then 140 compatlib= 141 AC_MSG_NOTICE([libpng.so will not be built]) 142 else 143 compatlib=libpng.la 144 fi], 145 [compatlib=libpng.la]) 146AC_SUBST([compatlib]) 147 148# Config files, substituting as above 149AC_CONFIG_FILES([Makefile libpng.pc:scripts/libpng.pc-configure.in]) 150AC_CONFIG_FILES([libpng-config:scripts/libpng-config.in], 151 [chmod +x libpng-config]) 152 153AC_OUTPUT 154