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_PREREQ([2.68])
dnl Version number stuff here:
-AC_INIT([libpng], [1.5.14], [png-mng-implement@lists.sourceforge.net])
-AM_INIT_AUTOMAKE
-dnl stop configure from automagically running automake
+AC_INIT([libpng],[1.6.0],[png-mng-implement@lists.sourceforge.net])
+AC_CONFIG_MACRO_DIR([scripts])
+
+# libpng does not follow GNU file name conventions (hence 'foreign')
+# color-tests requires automake 1.11 or later
+# silent-rules requires automake 1.11 or later
+# dist-xz requires automake 1.11 or later
+# 1.12.2 fixes a security issue in 1.11.2 and 1.12.1
+AM_INIT_AUTOMAKE([1.12.2 foreign dist-xz color-tests silent-rules serial-tests])
+# was:
+# AM_INIT_AUTOMAKE
AM_MAINTAINER_MODE
-PNGLIB_VERSION=1.5.14
+dnl configure.ac and Makefile.am expect automake 1.11.2 or a compatible later
+dnl version; aclocal.m4 will generate a failure if you use a prior version of
+dnl automake, so the following is not necessary (and is not defined anyway):
+dnl AM_PREREQ([1.11.2])
+dnl stop configure from automagically running automake
+
+PNGLIB_VERSION=1.6.0
PNGLIB_MAJOR=1
-PNGLIB_MINOR=5
-PNGLIB_RELEASE=14
+PNGLIB_MINOR=6
+PNGLIB_RELEASE=0
dnl End of version number stuff
AC_LANG([C])
AC_PROG_CC
AM_PROG_AS
-AC_PROG_LD
+LT_PATH_LD
AC_PROG_CPP
AC_CHECK_TOOL(SED, sed, :)
AC_CHECK_TOOL(AWK, awk, :)
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
+
+dnl libtool/libtoolize; version 2.4.2 is the tested version, this or any
+dnl compatible later version may be used
LT_INIT([win32-dll])
+LT_PREREQ([2.4.2])
# On Solaris 10 and 12 CPP gets set to cc -E, however this still
# does some input parsing. We need strict ANSI-C style tokenization,
# check this:
AC_REQUIRE_CPP
AC_MSG_CHECKING([for a C preprocessor that does not parse its input])
-AC_TRY_CPP([1.5.0 16BIT],
+AC_PREPROC_IFELSE([AC_LANG_SOURCE([[1.1.1 16BIT]])],
[DFNCPP="$CPP"],
- [DFNCPP=""
- sav_CPP="$CPP"
- for CPP in "${CC-cc} -E" "${CC-cc} -E -traditional-cpp" "/lib/cpp" "cpp"; do
- AC_TRY_CPP([1.5.0 16BIT],
- [DFNCPP="$CPP"]
- [break],,)
- done
- CPP="$sav_CPP"])
+ [ DFNCPP=""
+ sav_CPP="$CPP"
+ for CPP in "${CC-cc} -E" "${CC-cc} -E -traditional-cpp" "/lib/cpp" "cpp"
+ do
+ AC_PREPROC_IFELSE([AC_LANG_SOURCE([[1.1.1 16BIT]])],
+ [DFNCPP="$CPP"]
+ [break],,)
+ done
+ CPP="$sav_CPP"
+ ])
if test -n "$DFNCPP"; then
AC_MSG_RESULT([$DFNCPP])
AC_SUBST(DFNCPP)
AC_MSG_FAILURE([not found], 1)
fi
+# -Werror cannot be passed to GCC in CFLAGS because configure will fail (it
+# checks the compiler with a program that generates a warning), add the
+# following option to deal with this
+AC_ARG_VAR(PNG_COPTS,
+ [additional flags for the C compiler, use this for options that would]
+ [cause configure itself to fail])
+AC_ARG_ENABLE(werror,
+ AS_HELP_STRING([[[--enable-werror[=OPT]]]],
+ [Pass -Werror or the given argument to the compiler if it is supported]),
+ [test "$enable_werror" = "yes" && enable_werror="-Werror"
+ if test "$enable_werror" != "no"; then
+ sav_CFLAGS="$CFLAGS"
+ CFLAGS="$enable_werror $CFLAGS"
+ AC_MSG_CHECKING([if the compiler allows $enable_werror])
+ AC_COMPILE_IFELSE(
+ [AC_LANG_SOURCE([
+ [int main(int argc, char **argv){]
+ [return argv[argc-1][0];]
+ [}]])],
+ AC_MSG_RESULT(yes)
+ PNG_COPTS="$PNG_COPTS $enable_werror",
+ AC_MSG_RESULT(no))
+ CFLAGS="$sav_CFLAGS"
+ fi],)
+
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h])
# 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_FUNCS([memset], , AC_MSG_ERROR(memset not found in libc))
+AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_MSG_ERROR(cannot find pow)) )
AC_ARG_WITH(zlib-prefix,
- AC_HELP_STRING([--with-zlib-prefix],
- [prefix that may have been used in installed zlib]),
- [ZPREFIX=${withval}],
- [ZPREFIX='z_'])
+ AS_HELP_STRING([[[--with-zlib-prefix]]],
+ [prefix that may have been used in installed zlib]),
+ [ZPREFIX=${withval}],
+ [ZPREFIX='z_'])
AC_CHECK_LIB(z, zlibVersion, ,
- AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, ,
- AC_ERROR([zlib not installed])))
+ AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, , AC_MSG_ERROR(zlib not installed)))
# The following is for pngvalid, to ensure it catches FP errors even on
# platforms that don't enable FP exceptions, the function appears in the math
AC_CHECK_LIB([m], [feenableexcept])
AC_CHECK_FUNCS([feenableexcept])
-LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
-LIBPNG_DEFINES=$LIBPNG_DEFINES
-AC_SUBST(LIBPNG_DEFINES)
-
AC_MSG_CHECKING([if using Solaris linker])
SLD=`$LD --version 2>&1 | grep Solaris`
if test "$SLD"; then
# 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'])
+ AS_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}])
+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}'])
+ AS_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='${binconfigs}'])
AC_SUBST([binconfigs])
+# Support for prefixes to the API function names; this will generate defines
+# at the start of the build to rename exported library functions
+AC_ARG_WITH(libpng-prefix,
+ AS_HELP_STRING([[[--with-libpng-prefix]]],
+ [prefix libpng exported function (API) names with the given value]),
+ [if test "${withval:-no}" != "no"; then
+ AC_SUBST([PNG_PREFIX], [${withval}])
+ fi])
+AM_CONDITIONAL([DO_PNG_PREFIX], [test "${with_libpng_prefix:-no}" != "no"])
+
# Because GCC by default assembles code with an executable stack, even though it
# compiles C code with a non-executable stack, it is necessary to do a fixup
# here (this may by GCC specific)
AC_SUBST([AM_CCASFLAGS], [-Wa,--noexecstack])
AC_ARG_ENABLE([arm-neon],
- AC_HELP_STRING([--enable-arm-neon], [Enable ARM NEON optimizations]),
- [if test "${enableval}" = yes; then
- AC_DEFINE([PNG_FILTER_OPTIMIZATIONS],
- [png_init_filter_functions_neon],
- [ARM NEON filter initialization function])
- AC_DEFINE([PNG_ALIGNED_MEMORY_SUPPORTED], [1],
- [Align row buffers])
- fi])
+ AS_HELP_STRING([[[--enable-arm-neon]]], [Enable ARM NEON optimizations]),
+ [if test "${enableval}" = "yes"; then
+ AC_DEFINE([PNG_FILTER_OPTIMIZATIONS],
+ [png_init_filter_functions_neon],
+ [ARM NEON filter initialization function])
+ AC_DEFINE([PNG_ALIGNED_MEMORY_SUPPORTED], [1],
+ [Align row buffers])
+ fi])
AM_CONDITIONAL([PNG_ARM_NEON], [test "${enable_arm_neon:-no}" = yes])
+AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])
+
# 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])
+ [chmod +x libpng-config])
AC_OUTPUT
projects / l4.git / blobdiff