[libpng16] Allow unversioned links created on install to be disabled in

configure.  In configure builds 'make install' changes/adds links like png.h
and libpng.a to point to the newly installed, versioned, files (e.g.
libpng17/png.h and libpng17.a). Three new configure options and some
rearrangement of Makefile.am allow creation of these links to be disabled.
This commit is contained in:
John Bowler 2013-12-29 19:31:56 -06:00 committed by Glenn Randers-Pehrson
parent 1fc0171278
commit d0479d24a0
4 changed files with 117 additions and 37 deletions

View File

@ -1,5 +1,5 @@
Libpng 1.6.9beta02 - December 29, 2013
Libpng 1.6.9beta02 - December 30, 2013
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@ -42,7 +42,7 @@ Version 1.6.9beta01 [December 26, 2013]
Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69
in the tar distributions.
Version 1.6.9beta02 [December 29, 2013]
Version 1.6.9beta02 [December 30, 2013]
Added checks for libpng 1.5 to pngvalid.c. This supports the use of
this version of pngvalid in libpng 1.5
Merged with pngvalid.c from libpng-1.7 changes to create a single
@ -54,6 +54,11 @@ Version 1.6.9beta02 [December 29, 2013]
Revised pngvalid.c to support libpng 1.5, which does not support the
PNG_MAXIMUM_INFLATE_WINDOW option, so #define it out when appropriate in
pngvalid.c
Allow unversioned links created on install to be disabled in configure.
In configure builds 'make install' changes/adds links like png.h
and libpng.a to point to the newly installed, versioned, files (e.g.
libpng17/png.h and libpng17.a). Three new configure options and some
rearrangement of Makefile.am allow creation of these links to be disabled.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

View File

@ -4767,7 +4767,7 @@ Version 1.6.9beta01 [December 26, 2013]
Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69
in the tar distributions.
Version 1.6.9beta02 [December 29, 2013]
Version 1.6.9beta02 [December 30, 2013]
Added checks for libpng 1.5 to pngvalid.c. This supports the use of
this version of pngvalid in libpng 1.5
Merged with pngvalid.c from libpng-1.7 changes to create a single
@ -4779,6 +4779,11 @@ Version 1.6.9beta02 [December 29, 2013]
Revised pngvalid.c to support libpng 1.5, which does not support the
PNG_MAXIMUM_INFLATE_WINDOW option, so #define it out when appropriate in
pngvalid.c
Allow unversioned links created on install to be disabled in configure.
In configure builds 'make install' changes/adds links like png.h
and libpng.a to point to the newly installed, versioned, files (e.g.
libpng17/png.h and libpng17.a). Three new configure options and some
rearrangement of Makefile.am allow creation of these links to be disabled.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

View File

@ -81,7 +81,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.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\
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
arm/filter_neon.S arm/filter_neon_intrinsics.c
endif
@ -287,43 +287,74 @@ check: scripts/symbols.chk
dist-hook:
cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
# install the .../include headers as links to the new ones
install-data-hook:
cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
pngconf.h
cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
pnglibconf.h
cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
# Make links between installed files with release-specific names and the generic
# file names. If this install rule is run the generic names will be deleted and
# recreated - this has obvious issues for systems with multiple installations.
# do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
install-exec-hook:
cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
cd '$(DESTDIR)$(bindir)';\
$(LN_S) $(PNGLIB_BASENAME)-config libpng-config
@set -x;\
cd '$(DESTDIR)$(libdir)';\
for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
sl dylib dll.a; do\
rm -f libpng.$$ext;\
if test -f $(PNGLIB_BASENAME).$$ext; then\
$(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
fi;\
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.$$ext" || exit 1;\
fi;\
done
uninstall-hook:
cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
uninstall-library-links:
@set -x; cd '$(DESTDIR)$(libdir)'; for ext in $(EXT_LIST); do\
rm -f "libpng.$$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'
rm -f '$(DESTDIR)$(libdir)/libpng.a'
rm -f '$(DESTDIR)$(libdir)/libpng.la'
rm -f '$(DESTDIR)$(libdir)/libpng.so'
rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
rm -f '$(DESTDIR)$(libdir)/libpng.sl'
rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'
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

View File

@ -226,6 +226,45 @@ AC_ARG_WITH(libpng-prefix,
fi])
AM_CONDITIONAL([DO_PNG_PREFIX], [test "${with_libpng_prefix:-no}" != "no"])
# Control over what links are made for installed files. Versioned files are
# always installed, when the following options are turned on corresponding
# unversioned links are also created (normally as symbolic links):
AC_ARG_ENABLE([unversioned-links],
AS_HELP_STRING([[[--enable-unversioned-links]]],
[Installed libpng header files are placed in a versioned subdirectory]
[and installed libpng library (including DLL) files are versioned.]
[If this option is enabled unversioned links will be created pointing to]
[the corresponding installed files. If you use libpng.pc or]
[libpng-config for all builds you do not need these links, but if you]
[compile programs directly they will typically #include <png.h> and]
[link with -lpng; in that case you need the links.]
[The links can be installed manually using 'make install-header-links']
[and 'make install-library-links' and can be removed using the]
[corresponding uninstall- targets. If you do enable this option every]
[libpng 'make install' will recreate the links to point to the just]
[installed version of libpng. The default is to create the links;]
[use --disable-unversioned-links to change this]))
# The AM_CONDITIONAL test is written so that the default is enabled;
# --disable-unversioned-links must be given to turn the option off.
AM_CONDITIONAL([DO_INSTALL_LINKS],[test "$enable_unversioned_links" != "no"])
AC_ARG_ENABLE([unversioned-libpng-pc],
AS_HELP_STRING([[[--enable-unversioned-libpng-pc]]],
[Install the configuration file 'libpng.pc' as a link to the versioned]
[version. This is done by default - use --disable-unversioned-libpng-pc]
[to change this.]))
AM_CONDITIONAL([DO_INSTALL_LIBPNG_PC],
[test "$enable_unversioned_libpng_pc" != "no"])
AC_ARG_ENABLE([unversioned-libpng-config],
AS_HELP_STRING([[[--enable-unversioned-libpng-config]]],
[Install the configuration file 'libpng-config' as a link to the]
[versioned version. This is done by default - use]
[--disable-unversioned-libpng-config to change this.]))
AM_CONDITIONAL([DO_INSTALL_LIBPNG_CONFIG],
[test "$enable_unversioned_libpng_config" != "no"])
# HOST SPECIFIC OPTIONS
# =====================
#