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# Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
####################################################
# Things to make the libvcd and libvcdinfo librares
####################################################
# From libtool documentation amended with guidance from N. Boullis:
#
# 1. Start with version information of `0:0:0' for each libtool library.
#
# 2. It is probably not a good idea to update the version information
# several times between public releases, but rather once per public
# release. (This seems to be more an aesthetic consideration than
# a hard technical one.)
#
# 3. If the library source code has changed at all since the last
# update, then increment REVISION (`C:R:A' becomes `C:R+1:A').
#
# 4. If any interfaces have been added, removed, or changed since the
# last update, increment CURRENT, and set REVISION to 0.
#
# 5. If any interfaces have been added since the last public release,
# then increment AGE.
#
# 6. If any interfaces have been removed or changed since the last
# public release, then set AGE to 0. A changed interface means an
# incompatibility with previous versions.
libvcdinfo_la_CURRENT := 2
libvcdinfo_la_REVISION := 0
libvcdinfo_la_AGE := 2
noinst_LTLIBRARIES = libvcd.la
lib_LTLIBRARIES = libvcdinfo.la
AM_CPPFLAGS = $(LIBVCD_CFLAGS) $(LIBCDIO_CFLAGS)
libvcd_la_LIBADD = $(LIBCDIO_LIBS) $(LIBISO9660_LIBS)
libvcd_la_SOURCES = \
vcd_assert.h \
bitvec.h \
data_structures.h \
dict.h \
directory.h \
image_sink.h \
mpeg.h \
mpeg_stream.h \
obj.h \
pbc.h \
salloc.h \
sector_private.h \
stream.h \
stream_stdio.h \
util.h \
vcd.h \
vcd.c \
data_structures.c \
directory.c \
files.c \
image.c \
image_bincue.c \
image_cdrdao.c \
image_nrg.c \
logging.c \
mpeg.c \
mpeg_stream.c \
pbc.c \
salloc.c \
sector.c \
stream.c \
stream_stdio.c \
util.c
libvcdinfo_la_SOURCES = \
info.c \
inf.c \
info_private.h \
info_private.c \
vcd_read.c \
vcd_read.h
libvcdinfo_la_LIBADD = $(LIBCDIO_LIBS) $(LIBISO9660_LIBS) $(LIBVCD_LIBS)
libvcdinfo_la_LDFLAGS = -version-info $(libvcdinfo_la_CURRENT):$(libvcdinfo_la_REVISION):$(libvcdinfo_la_AGE)
libvcdinfo_la_DEPENDENCIES = libvcd.la
# Below is some simple versioning where every symbol is versioned with
# something that looks like the SONAME of the library. More complex (and
# better) versioning is possible; it is for example what is used by glibc.
# But good complex versioning is something that requires much more
# work...
# The below is a impliments symbol versioning. First of all, I
# compute MAJOR as CURENT - AGE; that is what is used within libtool
# (at least on GNU/Linux systems) for the number in the SONAME. The
# nm command gives the list of symbols known in each of the object
# files that will be part of the shared library. And the sed command
# extracts from this list those symbols that will be shared. (This sed
# command comes from libtool.)
libvcdinfo_la_MAJOR := $(shell expr $(libvcdinfo_la_CURRENT) - $(libvcdinfo_la_AGE))
if BUILD_VERSIONED_LIBS
libvcdinfo_la_DEPENDENCIES += libvcdinfo.la.ver
libvcdinfo_la_LDFLAGS += -Wl,--version-script=libvcdinfo.la.ver
libvcdinfo.la.ver: $(libvcdinfo_la_OBJECTS)
echo 'VCDINFO_$(libvcdinfo_la_MAJOR) {' > $@
echo " global:" >> $@
objs=`for obj in $(libvcdinfo_la_OBJECTS); do sed -ne "s/^pic_object='\(.*\)'$$/\1/p" $$obj; done`; \
nm $${objs} | sed -n -e 's/^.*[ ][ABCDGIRSTW][ABCDGIRSTW]*[ ][ ]*\([_A-Za-z][_A-Za-z0-9]*\)$$/ \1;/p' | sort | uniq >> $@
echo '};' >> $@
MOSTLYCLEANFILES = libvcdinfo.la.ver
endif
# EOF
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