3 dnl Process this file with autoconf to produce a configure script.
5 dnl Minor upgrades (compatible ABI): increment the package version
6 dnl (third field in two places below) and set the PNGLIB_RELEASE
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.
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
19 dnl Version number stuff here:
21 AC_INIT([libpng], [1.5.1], [png-mng-implement@lists.sourceforge.net])
23 dnl stop configure from automagically running automake
31 dnl End of version number stuff
33 AC_CONFIG_SRCDIR([pngget.c])
34 AM_CONFIG_HEADER(config.h)
36 # Checks for programs.
41 AC_CHECK_TOOL(SED, sed, :)
42 AC_CHECK_TOOL(AWK, awk, :)
48 # On Solaris 10 and 12 CPP gets set to cc -E, however this still
49 # does some input parsing. We need strict ANSI-C style tokenization,
52 AC_MSG_CHECKING([for a C preprocessor that does not parse its input])
53 AC_TRY_CPP([1.5.0 16BIT],
57 for CPP in "${CC-cc} -E" "${CC-cc} -E -traditional-cpp" "/lib/cpp" "cpp"; do
58 AC_TRY_CPP([1.5.0 16BIT],
63 if test -n "$DFNCPP"; then
64 AC_MSG_RESULT([$DFNCPP])
67 AC_MSG_FAILURE([not found], 1)
70 # Checks for header files.
72 AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h])
74 # Checks for typedefs, structures, and compiler characteristics.
79 # Checks for library functions.
81 AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc]))
82 AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) )
83 AC_ARG_WITH(zlib-prefix,
84 AC_HELP_STRING([--with-zlib-prefix],
85 [prefix that may have been used in installed zlib]),
88 AC_CHECK_LIB(z, zlibVersion, ,
89 AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, ,
90 AC_ERROR([zlib not installed])))
93 LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
94 LIBPNG_DEFINES=$LIBPNG_DEFINES
95 AC_SUBST(LIBPNG_DEFINES)
97 AC_MSG_CHECKING([if libraries can be versioned])
98 # Special case for PE/COFF platforms: ld reports
99 # support for version-script, but doesn't actually
100 # DO anything with it.
102 *cygwin* | *mingw32* | *interix* )
103 have_ld_version_script=no
107 GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
109 have_ld_version_script=yes
112 have_ld_version_script=no
114 AC_MSG_WARN(*** You have not enabled versioned symbols.)
119 AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
121 if test "$have_ld_version_script" = "yes"; then
122 AC_MSG_CHECKING([for symbol prefix])
123 SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
124 | ${CPP-${CC-gcc} -E} - 2>&1 \
125 | ${EGREP-grep} "^PREFIX=" \
126 | ${SED-sed} "s:^PREFIX=::"`
127 AC_SUBST(SYMBOL_PREFIX)
128 AC_MSG_RESULT($SYMBOL_PREFIX)
131 # Substitutions for .in files
132 AC_SUBST(PNGLIB_VERSION)
133 AC_SUBST(PNGLIB_MAJOR)
134 AC_SUBST(PNGLIB_MINOR)
135 AC_SUBST(PNGLIB_RELEASE)
137 # Additional arguments (and substitutions)
138 # Allow the pkg-config directory to be set
139 AC_ARG_WITH(pkgconfigdir,
140 AC_HELP_STRING([--with-pkgconfigdir],
141 [Use the specified pkgconfig dir (default is libdir/pkgconfig)]),
142 [pkgconfigdir=${withval}],
143 [pkgconfigdir='${libdir}/pkgconfig'])
145 AC_SUBST([pkgconfigdir])
146 AC_MSG_NOTICE([pkgconfig directory is ${pkgconfigdir}])
148 # Make the *-config binary config scripts optional
149 AC_ARG_WITH(binconfigs,
150 AC_HELP_STRING([--with-binconfigs],
151 [Generate shell libpng-config scripts as well as pkg-config data]
152 [@<:@default=yes@:>@]),
153 [if test "${withval}" = no; then
155 AC_MSG_NOTICE([libpng-config scripts will not be built])
157 binconfigs='${binconfigs}'
159 [binconfigs='${binconfigs}'])
160 AC_SUBST([binconfigs])
162 # Config files, substituting as above
163 AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
164 AC_CONFIG_FILES([libpng-config:libpng-config.in],
165 [chmod +x libpng-config])