Commit 161ad9e4 authored by Vivek Das Mohapatra's avatar Vivek Das Mohapatra
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libcapsule is a library used to implement proxying/shim libraries

The generated shim libraries (libz and libGL are included as examples)
provide the same symbols as the target library but do not expose the
symbols from their dependencies to other objects that link to them.

They are also capable of using a filesystem tree starting somwhere
other than / to get the dependencies for the target.

Included are tools to help generate said proxy libraries with minimal
manual intervention.
Vivek Das Mohapatra <>; <>
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Version 3, 29 June 2007
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# Copyright © 2017 Collabora Ltd
# This file is part of libcapsule.
# libcapsule is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# libcapsule is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with libcapsule. If not, see <>.
V ?= 0
AUTOMAKE_OPTIONS = subdir-objects
AM_CFLAGS = --std=c99 -D_GNU_SOURCE -Og -ggdb -Wall
bin_PROGRAMS = elf-dump print-libstubs
include_HEADERS = capsule/capsule.h
nodist_include_HEADERS = utils/utils.h utils/dump.h utils/process-pt-dynamic.h
elf_dump_SOURCES = utils/elf-dump.c
elf_dump_LDFLAGS = -ldl
print_libstubs_SOURCES = utils/print-libstubs.c
print_libstubs_LDFLAGS = -ldl
libcapsule_la_SOURCES = capsule/capsule-dlmopen.c \
capsule/capsule-relocate.c \
utils/utils.c utils/dump.c \
utils/process-pt-dynamic.c \
libcapsule_la_LDFLAGS = -lelf
libz_la_SOURCES = shim/
libz_la_LDFLAGS = -lcapsule -version-info 1:1:0 \
libGL_la_SOURCES = shim/
libGL_la_LDFLAGS = -lcapsule -version-info 1:1:0
shims = z GL
shim_srcs = $(foreach l,$(shims),shim/lib$
shim_files = $(foreach y,map symbols,$(foreach x,$(shim_srcs),$x.$y))
GENSTUB_V0 = @echo " GENSTUB " $@.excluded $@.shared $@;
CLEANFILES = $(shim_files)
BUILT_SOURCES = $(shim_srcs)
shim/ shim/%.excluded shim/%.shared
shim/ capsule-shim.h print-libstubs
$(GENSTUB)$(top_srcdir)/$< $$(basename $@ .c) $@.excluded $@.shared $@
@echo srcs : $(shim_srcs)
@echo files: $(shim_files)
# @(inc=$$($(top_srcdir)/ $(ZLIB_CFLAGS) -izlib.h); \
# gcc -E $$inc | $(top_srcdir)/ > $@
// Copyright © 2017 Collabora Ltd