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