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Makefile.am
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Makefile.am
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# Makefile.am, the source file for Makefile.in (and hence Makefile), is
#
# Copyright (c) 2018-2024 Cosmin Truta
# Copyright (c) 2004-2016 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
PNGLIB_BASENAME= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
ACLOCAL_AMFLAGS = -I scripts/autoconf
# test programs - run on make check, make distcheck
if ENABLE_TESTS
check_PROGRAMS= pngtest pngunknown pngstest pngvalid pngimage pngcp
if HAVE_CLOCK_GETTIME
check_PROGRAMS += timepng
endif
else
check_PROGRAMS=
endif
# Utilities - installed
if ENABLE_TOOLS
bin_PROGRAMS= pngfix png-fix-itxt
else
bin_PROGRAMS=
endif
# This ensures that pnglibconf.h gets built at the start of 'make all' or
# 'make check', but it does not add dependencies to the individual programs,
# this is done below.
#
# IMPORTANT: always add the object modules of new programs to the list below
# because otherwise the sequence 'configure; make new-program' will *sometimes*
# result in the installed (system) pnglibconf.h being used and the result is
# always wrong and always very confusing.
BUILT_SOURCES = pnglibconf.h
if ENABLE_TESTS
pngtest_SOURCES = pngtest.c
pngtest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
pngvalid_SOURCES = contrib/libtests/pngvalid.c
pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
pngstest_SOURCES = contrib/libtests/pngstest.c
pngstest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
pngunknown_SOURCES = contrib/libtests/pngunknown.c
pngunknown_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
pngimage_SOURCES = contrib/libtests/pngimage.c
pngimage_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
timepng_SOURCES = contrib/libtests/timepng.c
timepng_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
pngcp_SOURCES = contrib/tools/pngcp.c
pngcp_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
endif
if ENABLE_TOOLS
pngfix_SOURCES = contrib/tools/pngfix.c
pngfix_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
png_fix_itxt_SOURCES = contrib/tools/png-fix-itxt.c
endif
# Generally these are single line shell scripts to run a test with a particular
# set of parameters:
if ENABLE_TESTS
TESTS =\
tests/pngtest-all\
tests/pngvalid-gamma-16-to-8 tests/pngvalid-gamma-alpha-mode\
tests/pngvalid-gamma-background tests/pngvalid-gamma-expand16-alpha-mode\
tests/pngvalid-gamma-expand16-background\
tests/pngvalid-gamma-expand16-transform tests/pngvalid-gamma-sbit\
tests/pngvalid-gamma-threshold tests/pngvalid-gamma-transform\
tests/pngvalid-progressive-size\
tests/pngvalid-progressive-interlace-standard\
tests/pngvalid-transform\
tests/pngvalid-progressive-standard tests/pngvalid-standard\
tests/pngstest-1.8 tests/pngstest-1.8-alpha tests/pngstest-linear\
tests/pngstest-linear-alpha tests/pngstest-none tests/pngstest-none-alpha\
tests/pngstest-sRGB tests/pngstest-sRGB-alpha tests/pngunknown-IDAT\
tests/pngunknown-discard tests/pngunknown-if-safe tests/pngunknown-sAPI\
tests/pngunknown-sTER tests/pngunknown-save tests/pngunknown-vpAg\
tests/pngimage-quick tests/pngimage-full
endif
# man pages
dist_man_MANS= libpng.3 libpngpf.3 png.5
# generate the -config scripts if required
binconfigs= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config
EXTRA_SCRIPTS= libpng-config libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config
bin_SCRIPTS= @binconfigs@
# rules to build libpng, only build the old library on request
lib_LTLIBRARIES=libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
# EXTRA_LTLIBRARIES= libpng.la
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c\
pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngusr.dfa
if PNG_ARM_NEON
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
arm/filter_neon_intrinsics.c \
arm/palette_neon_intrinsics.c
endif
if PNG_MIPS_MSA
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += mips/mips_init.c\
mips/filter_msa_intrinsics.c
endif
if PNG_MIPS_MMI
if !PNG_MIPS_MSA
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += mips/mips_init.c
endif
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += mips/filter_mmi_inline_assembly.c
endif
if PNG_INTEL_SSE
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += intel/intel_init.c\
intel/filter_sse2_intrinsics.c
endif
if PNG_POWERPC_VSX
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += powerpc/powerpc_init.c\
powerpc/filter_vsx_intrinsics.c
endif
if PNG_LOONGARCH_LSX
noinst_LTLIBRARIES= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@lsx.la
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@lsx_la_SOURCES = loongarch/loongarch_lsx_init.c\
loongarch/filter_lsx_intrinsics.c
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@lsx_la_CFLAGS = -mlsx
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LIBADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@lsx.la
# libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@lsx.la
endif
nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined -export-dynamic \
-version-number @PNGLIB_MAJOR@@PNGLIB_MINOR@:@PNGLIB_RELEASE@:0
if HAVE_LD_VERSION_SCRIPT
# Versioned symbols and restricted exports
if HAVE_SOLARIS_LD
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,-M -Wl,libpng.vers
else
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,--version-script=libpng.vers
endif
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.vers
else
# Only restricted exports when possible
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -export-symbols libpng.sym
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.sym
endif
if PNG_LOONGARCH_LSX
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES += libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@lsx.la
endif
#distribute headers in /usr/include/libpng/*
pkgincludedir= $(includedir)/$(PNGLIB_BASENAME)
pkginclude_HEADERS= png.h pngconf.h
nodist_pkginclude_HEADERS= pnglibconf.h
# pkg-config stuff, note that libpng.pc is always required in order
# to get the correct library
pkgconfigdir = @pkgconfigdir@
pkgconfig_DATA = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc
# Extra source distribution files, '${srcdir}' is used below to stop build files
# from those directories being included. This only works if the configure is
# not done in the source directory!
EXTRA_DIST= \
ANNOUNCE AUTHORS CHANGES INSTALL LICENSE README TODO TRADEMARK \
pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
${srcdir}/ci ${srcdir}/contrib ${srcdir}/projects ${srcdir}/scripts \
$(TESTS) $(XFAIL_TESTS) tests/pngstest \
CMakeLists.txt example.c libpng-manual.txt
SCRIPT_CLEANFILES=scripts/*.out scripts/*.chk
CLEANFILES= *.tf? pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc \
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers libpng.sym \
check.new pnglibconf.h pngprefix.h symbols.new pngtest-log.txt \
pnglibconf.out pnglibconf.c pnglibconf.pre pnglibconf.dfn \
$(SCRIPT_CLEANFILES)
MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
config.sub configure depcomp install-sh ltmain.sh missing
# PNG_COPTS give extra options for the C compiler to be used on all compilation
# steps (unless targe_CFLAGS is specified; that will take precedence over
# AM_CFLAGS)
PNG_COPTS = @PNG_COPTS@
AM_CFLAGS = ${PNG_COPTS}
# DFNCPP is normally just CPP - the C preprocessor - but on Solaris and maybe
# other operating systems (NeXT?) the C preprocessor selected by configure
# checks input tokens for validity - effectively it performs part of the ANSI-C
# parsing - and therefore fails with the .df files. configure.ac has special
# checks for this and sets DFNCPP appropriately.
DFNCPP = @DFNCPP@
SUFFIXES = .chk .out
$(PNGLIB_BASENAME).pc: libpng.pc
cp libpng.pc $@
$(PNGLIB_BASENAME)-config: libpng-config
cp libpng-config $@
scripts/sym.out scripts/vers.out: png.h pngconf.h pnglibconf.h
scripts/prefix.out: png.h pngconf.h pnglibconf.out
scripts/symbols.out: png.h pngconf.h $(srcdir)/scripts/pnglibconf.h.prebuilt
scripts/intprefix.out: pnglibconf.h
libpng.sym: scripts/sym.out
rm -f $@
cp $? $@
libpng.vers: scripts/vers.out
rm -f $@
cp $? $@
if DO_PNG_PREFIX
# Rename functions in scripts/prefix.out with a PNG_PREFIX prefix.
# Rename macros in scripts/macro.lst from PNG_PREFIXpng_ to PNG_ (the actual
# implementation of the macro).
pnglibconf.h: pnglibconf.out scripts/prefix.out scripts/macro.lst
rm -f $@
$(AWK) 's==0 && NR>1{print prev}\
s==0{prev=$$0}\
s==1{print "#define", $$1, "@PNG_PREFIX@" $$1}\
s==2{print "#define @PNG_PREFIX@png_" $$1, "PNG_" $$1}\
END{print prev}' s=0 pnglibconf.out s=1 scripts/prefix.out\
s=2 ${srcdir}/scripts/macro.lst >pnglibconf.tf8
mv pnglibconf.tf8 $@
pngprefix.h: scripts/intprefix.out
rm -f pngprefix.tf1
$(AWK) '{print "#define", $$1, "@PNG_PREFIX@" $$1}' $? >pngprefix.tf1
mv pngprefix.tf1 $@
else
pnglibconf.h: pnglibconf.out
rm -f $@
cp $? $@
pngprefix.h: # is empty
:>$@
endif
$(srcdir)/scripts/pnglibconf.h.prebuilt:
@echo "Attempting to build $@" >&2
@echo "This is a machine generated file, but if you want to make" >&2
@echo "a new one simply make 'scripts/pnglibconf.out', copy that" >&2
@echo "AND set PNG_ZLIB_VERNUM to 0 (you MUST do this)" >&2
@exit 1
# The following is necessary to ensure that the local pnglibconf.h is used, not
# an installed one (this can happen immediately after on a clean system if
# 'make test' is the first thing the user does.) Only files which include
# one of the png source files (typically png.h or pngpriv.h) need to be listed
# here:
pngtest.o: pnglibconf.h
contrib/libtests/makepng.o: pnglibconf.h
contrib/libtests/pngstest.o: pnglibconf.h
contrib/libtests/pngunknown.o: pnglibconf.h
contrib/libtests/pngimage.o: pnglibconf.h
contrib/libtests/pngvalid.o: pnglibconf.h
contrib/libtests/readpng.o: pnglibconf.h
contrib/libtests/tarith.o: pnglibconf.h
contrib/libtests/timepng.o: pnglibconf.h
contrib/tools/makesRGB.o: pnglibconf.h
contrib/tools/pngfix.o: pnglibconf.h
contrib/tools/pngcp.o: pnglibconf.h
# We must use -DPNG_NO_USE_READ_MACROS here even when the library may actually
# be built with PNG_USE_READ_MACROS; this prevents the read macros from
# interfering with the symbol file format.
SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
-DPNGLIB_VERSION='@PNGLIB_VERSION@'\
-DSYMBOL_PREFIX='$(SYMBOL_PREFIX)'\
-DPNG_NO_USE_READ_MACROS -DPNG_BUILDING_SYMBOL_TABLE
if DO_PNG_PREFIX
SYMBOL_CFLAGS += -DPNG_PREFIX='@PNG_PREFIX@'
endif
.c.out:
rm -f $@ $*.tf[12]
test -d scripts || mkdir scripts || test -d scripts
$(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES)\
$(CPPFLAGS) $(SYMBOL_CFLAGS) $< > $*.tf1
$(AWK) -f "${srcdir}/scripts/dfn.awk" out="$*.tf2" $*.tf1 1>&2
rm -f $*.tf1
mv $*.tf2 $@
# The .c file for pnglibconf.h is machine generated
pnglibconf.c: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
rm -f $@ $*.tf[45]
$(AWK) -f ${srcdir}/scripts/options.awk out=$*.tf4 version=search\
${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
$(AWK) -f ${srcdir}/scripts/options.awk out=$*.tf5 $*.tf4 1>&2
rm $*.tf4
mv $*.tf5 $@
# Symbol checks (.def and .out files should match)
scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.out
.out.chk:
rm -f $@ $*.new
$(AWK) -f ${srcdir}/scripts/checksym.awk ${srcdir}/scripts/${*F}.def\
of="$*.new" $< >&2
mv $*.new $@
# used on demand to regenerate the standard header, CPPFLAGS should
# be empty - no non-standard defines
scripts/pnglibconf.c: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
rm -f $@ pnglibconf.tf[67]
test -z "$(CPPFLAGS)"
echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
$(AWK) -f ${srcdir}/scripts/options.awk out=pnglibconf.tf6\
logunsupported=1 version=search ${srcdir}/pngconf.h -\
${srcdir}/scripts/pnglibconf.dfa 1>&2
$(AWK) -f ${srcdir}/scripts/options.awk out=pnglibconf.tf7\
pnglibconf.tf6 1>&2
rm pnglibconf.tf6
mv pnglibconf.tf7 $@
$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS): png.h pngconf.h \
pnglibconf.h pngpriv.h pngdebug.h pnginfo.h pngstruct.h pngprefix.h
test: check-am
# Extra checks
check: scripts/symbols.chk
# Don't distribute the generated script files
dist-hook:
cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
# Make links between installed files with release-specific names and the generic
# file names. If this install rule is run the generic names will be deleted and
# recreated - this has obvious issues for systems with multiple installations.
install-header-links:
@set -ex; cd '$(DESTDIR)$(includedir)'; for f in $(HEADERS); do \
rm -f "$$f"; $(LN_S) "$(PNGLIB_BASENAME)/$$f" "$$f"; done
uninstall-header-links:
cd '$(DESTDIR)$(includedir)'; rm -f $(HEADERS)
install-libpng-pc:
@set -ex; cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc; \
$(LN_S) '$(PNGLIB_BASENAME).pc' libpng.pc
uninstall-libpng-pc:
rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
# EXT_LIST is a list of the possibly library directory extensions, this exists
# because we can't find a good way of discovering the file extensions that are
# actually installed on a given system, so instead we check for every extension
# we have seen.
EXT_LIST = a dll.a so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ la sl dylib
install-library-links:
@set -x; cd '$(DESTDIR)$(libdir)';\
for ext in $(EXT_LIST); do\
rm -f "libpng.$$ext";\
if test -f "$(PNGLIB_BASENAME).$$ext"; then\
$(LN_S) "$(PNGLIB_BASENAME).$$ext" "libpng.$$ext" || exit 1;\
fi;\
done
uninstall-library-links:
@set -x; cd '$(DESTDIR)$(libdir)'; for ext in $(EXT_LIST); do\
rm -f "libpng.$$ext"; done
install-libpng-config:
@set -ex; cd '$(DESTDIR)$(bindir)'; rm -f libpng-config; \
$(LN_S) '$(PNGLIB_BASENAME)-config' libpng-config
uninstall-libpng-config:
rm -f '$(DESTDIR)$(bindir)/libpng-config'
if DO_INSTALL_LINKS
# If --enable-unversioned-links is specified the header and lib file links
# will be automatically made on a 'make install':
install-data-hook: install-header-links
uninstall-hook: uninstall-header-links
install-exec-hook: install-library-links
uninstall-hook: uninstall-library-links
endif
if DO_INSTALL_LIBPNG_PC
# Likewise, --install-pc causes libpng.pc to be constructed:
install-data-hook: install-libpng-pc
uninstall-hook: uninstall-libpng-pc
endif
if DO_INSTALL_LIBPNG_CONFIG
# And --install-config:
install-exec-hook: install-libpng-config
uninstall-hook: uninstall-libpng-config
endif
# The following addition ensures that 'make all' always builds the test programs
# too. It used to, but some change either in libpng or configure stopped this
# working.
all-am: $(check_PROGRAMS)