a23f3dbcb6
This version of autogen.sh attempts to dissuade people from running it when it is not, or should not, be necessary.
230 lines
6.9 KiB
Plaintext
230 lines
6.9 KiB
Plaintext
# 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])
|
|
|
|
dnl Version number stuff here:
|
|
|
|
AC_INIT([libpng],[1.6.0beta07], [png-mng-implement@lists.sourceforge.net])
|
|
AC_CONFIG_MACRO_DIR([scripts])
|
|
AM_INIT_AUTOMAKE
|
|
dnl stop configure from automagically running automake
|
|
AM_MAINTAINER_MODE
|
|
|
|
PNGLIB_VERSION=1.6.0beta07
|
|
PNGLIB_MAJOR=1
|
|
PNGLIB_MINOR=6
|
|
PNGLIB_RELEASE=0
|
|
|
|
dnl End of version number stuff
|
|
|
|
AC_CONFIG_SRCDIR([pngget.c])
|
|
AC_CONFIG_HEADERS([config.h])
|
|
|
|
# Checks for programs.
|
|
AC_LANG([C])
|
|
AC_PROG_CC
|
|
AM_PROG_AS
|
|
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
|
|
LT_INIT([win32-dll])
|
|
|
|
# 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_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_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)
|
|
else
|
|
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 typedefs, structures, and compiler characteristics.
|
|
AC_C_CONST
|
|
AC_TYPE_SIZE_T
|
|
AC_STRUCT_TM
|
|
AC_C_RESTRICT
|
|
|
|
# Checks for library functions.
|
|
AC_FUNC_STRTOD
|
|
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,
|
|
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, ${ZPREFIX}zlibVersion, , AC_MSG_ERROR(zlib not installed)))
|
|
|
|
# The following is for pngvalid, to ensure it catches FP errors even on
|
|
# platforms that don't enable FP exceptions, the function appears in the math
|
|
# library (typically), it's not an error if it is not found.
|
|
AC_CHECK_LIB([m], [feenableexcept])
|
|
AC_CHECK_FUNCS([feenableexcept])
|
|
|
|
AC_MSG_CHECKING([if using Solaris linker])
|
|
SLD=`$LD --version 2>&1 | grep Solaris`
|
|
if test "$SLD"; then
|
|
have_solaris_ld=yes
|
|
AC_MSG_RESULT(yes)
|
|
else
|
|
have_solaris_ld=no
|
|
AC_MSG_RESULT(no)
|
|
fi
|
|
AM_CONDITIONAL(HAVE_SOLARIS_LD, test "$have_solaris_ld" = "yes")
|
|
|
|
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 $host in
|
|
*cygwin* | *mingw32* | *interix* )
|
|
have_ld_version_script=no
|
|
AC_MSG_RESULT(no)
|
|
;;
|
|
* )
|
|
|
|
if test "$have_solaris_ld" = "yes"; then
|
|
GLD=`$LD --help < /dev/null 2>&1 | grep 'M mapfile'`
|
|
else
|
|
GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
|
|
fi
|
|
|
|
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,
|
|
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 ${pkgconfigdir}]])
|
|
|
|
# Make the *-config binary config scripts optional
|
|
AC_ARG_WITH(binconfigs,
|
|
AS_HELP_STRING([[[--with-binconfigs]]],
|
|
[Generate shell libpng-config scripts as well as pkg-config data]
|
|
[@<:@default=yes@:>@]),
|
|
[if test "${withval}" = no; then
|
|
binconfigs=
|
|
AC_MSG_NOTICE([[libpng-config scripts will not be built]])
|
|
else
|
|
binconfigs='${binconfigs}'
|
|
fi],
|
|
[binconfigs='${binconfigs}'])
|
|
AC_SUBST([binconfigs])
|
|
|
|
# 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],
|
|
AS_HELP_STRING([[[--enable-arm-neon]]], [Enable ARM NEON optimizations]),
|
|
[if test "${enableval}" = "yes"; then
|
|
AC_DEFINE([PNG_ARM_NEON], [1], [Enable ARM NEON optimizations])
|
|
AC_DEFINE([PNG_ALIGNED_MEMORY_SUPPORTED], [1], [Align row buffers])
|
|
fi])
|
|
AM_CONDITIONAL([PNG_ARM_NEON], [test "${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])
|
|
|
|
AC_OUTPUT
|