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[libpng15] 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
Glenn Randers-Pehrson
parent
c5c7156df0
commit
b86dd0b19b
5
ANNOUNCE
5
ANNOUNCE
@ -58,6 +58,11 @@ Version 1.5.18beta03 [December 30, 2013]
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system pnglibconf.h.
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Rebuilt configure scripts with automake 1.14.1 and autoconf-2.69.
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Require automake-1.13 and enable automake "subdirs" feature in autoconf.ac.
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Allow unversioned links created on install to be disabled in configure.
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In configure builds 'make install' changes/adds links like png.h
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and libpng.a to point to the newly installed, versioned, files (e.g.
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libpng17/png.h and libpng17.a). Three new configure options and some
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rearrangement of Makefile.am allow creation of these links to be disabled.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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5
CHANGES
5
CHANGES
@ -4182,6 +4182,11 @@ Version 1.5.18beta03 [December 30, 2013]
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system pnglibconf.h.
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Rebuilt configure scripts with automake 1.14.1 and autoconf-2.69.
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Require automake-1.13 and enable automake "subdirs" feature in autoconf.ac
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Allow unversioned links created on install to be disabled in configure.
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In configure builds 'make install' changes/adds links like png.h
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and libpng.a to point to the newly installed, versioned, files (e.g.
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libpng17/png.h and libpng17.a). Three new configure options and some
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rearrangement of Makefile.am allow creation of these links to be disabled.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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97
Makefile.am
97
Makefile.am
@ -193,43 +193,74 @@ check: scripts/symbols.chk
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dist-hook:
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cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
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# install the .../include headers as links to the new ones
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install-data-hook:
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cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
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cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
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cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
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pngconf.h
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cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
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pnglibconf.h
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cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
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cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
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# Make links between installed files with release-specific names and the generic
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# file names. If this install rule is run the generic names will be deleted and
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# recreated - this has obvious issues for systems with multiple installations.
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# do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
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install-exec-hook:
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cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
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cd '$(DESTDIR)$(bindir)';\
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$(LN_S) $(PNGLIB_BASENAME)-config libpng-config
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@set -x;\
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cd '$(DESTDIR)$(libdir)';\
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for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
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sl dylib dll.a; do\
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rm -f libpng.$$ext;\
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if test -f $(PNGLIB_BASENAME).$$ext; then\
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$(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
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fi;\
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install-header-links:
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@set -ex; cd '$(DESTDIR)$(includedir)'; for f in $(HEADERS); do \
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rm -f "$$f"; $(LN_S) "$(PNGLIB_BASENAME)/$$f" "$$f"; done
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uninstall-header-links:
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cd '$(DESTDIR)$(includedir)'; rm -f $(HEADERS)
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install-libpng-pc:
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@set -ex; cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc; \
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$(LN_S) '$(PNGLIB_BASENAME).pc' libpng.pc
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uninstall-libpng-pc:
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rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
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# EXT_LIST is a list of the possibly library directory extensions, this exists
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# because we can't find a good way of discovering the file extensions that are
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# actually installed on a given system, so instead we check for every extension
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# we have seen.
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EXT_LIST = a dll.a so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ la sl dylib
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install-library-links:
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@set -x; cd '$(DESTDIR)$(libdir)';\
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for ext in $(EXT_LIST); do\
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rm -f "libpng.$$ext";\
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if test -f "$(PNGLIB_BASENAME).$$ext"; then\
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$(LN_S) "$(PNGLIB_BASENAME).$$ext" "libpng.$$ext" || exit 1;\
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fi;\
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done
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uninstall-hook:
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cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
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rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
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uninstall-library-links:
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@set -x; cd '$(DESTDIR)$(libdir)'; for ext in $(EXT_LIST); do\
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rm -f "libpng.$$ext"; done
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install-libpng-config:
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@set -ex; cd '$(DESTDIR)$(bindir)'; rm -f libpng-config; \
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$(LN_S) '$(PNGLIB_BASENAME)-config' libpng-config
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uninstall-libpng-config:
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rm -f '$(DESTDIR)$(bindir)/libpng-config'
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rm -f '$(DESTDIR)$(libdir)/libpng.a'
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rm -f '$(DESTDIR)$(libdir)/libpng.la'
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rm -f '$(DESTDIR)$(libdir)/libpng.so'
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rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
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rm -f '$(DESTDIR)$(libdir)/libpng.sl'
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rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
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rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'
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if DO_INSTALL_LINKS
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# If --enable-unversioned-links is specified the header and lib file links
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# will be automatically made on a 'make install':
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install-data-hook: install-header-links
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uninstall-hook: uninstall-header-links
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install-exec-hook: install-library-links
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uninstall-hook: uninstall-library-links
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endif
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if DO_INSTALL_LIBPNG_PC
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# Likewise, --install-pc causes libpng.pc to be constructed:
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install-data-hook: install-libpng-pc
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uninstall-hook: uninstall-libpng-pc
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endif
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if DO_INSTALL_LIBPNG_CONFIG
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# And --install-config:
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install-exec-hook: install-libpng-config
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uninstall-hook: uninstall-libpng-config
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endif
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# The following addition ensures that 'make all' always builds the test programs
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# too. It used to, but some change either in libpng or configure stopped this
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39
configure.ac
39
configure.ac
@ -166,6 +166,45 @@ AC_ARG_WITH(binconfigs,
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[binconfigs='${binconfigs}'])
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AC_SUBST([binconfigs])
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# Control over what links are made for installed files. Versioned files are
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# always installed, when the following options are turned on corresponding
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# unversioned links are also created (normally as symbolic links):
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AC_ARG_ENABLE([unversioned-links],
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AS_HELP_STRING([[[--enable-unversioned-links]]],
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[Installed libpng header files are placed in a versioned subdirectory]
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[and installed libpng library (including DLL) files are versioned.]
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[If this option is enabled unversioned links will be created pointing to]
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[the corresponding installed files. If you use libpng.pc or]
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[libpng-config for all builds you do not need these links, but if you]
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[compile programs directly they will typically #include <png.h> and]
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[link with -lpng; in that case you need the links.]
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[The links can be installed manually using 'make install-header-links']
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[and 'make install-library-links' and can be removed using the]
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[corresponding uninstall- targets. If you do enable this option every]
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[libpng 'make install' will recreate the links to point to the just]
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[installed version of libpng. The default is to create the links;]
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[use --disable-unversioned-links to change this]))
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# The AM_CONDITIONAL test is written so that the default is enabled;
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# --disable-unversioned-links must be given to turn the option off.
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AM_CONDITIONAL([DO_INSTALL_LINKS],[test "$enable_unversioned_links" != "no"])
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AC_ARG_ENABLE([unversioned-libpng-pc],
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AS_HELP_STRING([[[--enable-unversioned-libpng-pc]]],
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[Install the configuration file 'libpng.pc' as a link to the versioned]
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[version. This is done by default - use --disable-unversioned-libpng-pc]
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[to change this.]))
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AM_CONDITIONAL([DO_INSTALL_LIBPNG_PC],
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[test "$enable_unversioned_libpng_pc" != "no"])
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AC_ARG_ENABLE([unversioned-libpng-config],
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AS_HELP_STRING([[[--enable-unversioned-libpng-config]]],
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[Install the configuration file 'libpng-config' as a link to the]
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[versioned version. This is done by default - use]
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[--disable-unversioned-libpng-config to change this.]))
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AM_CONDITIONAL([DO_INSTALL_LIBPNG_CONFIG],
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[test "$enable_unversioned_libpng_config" != "no"])
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# HOST SPECIFIC OPTIONS
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# =====================
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#
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