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glibc/elf/Makefile
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# Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. | |
# This file is part of the GNU C Library. | |
# The GNU C Library is free software; you can redistribute it and/or | |
# modify it under the terms of the GNU Library General Public License as | |
# published by the Free Software Foundation; either version 2 of the | |
# License, or (at your option) any later version. | |
# The GNU C Library 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 | |
# Library General Public License for more details. | |
# You should have received a copy of the GNU Library General Public | |
# License along with the GNU C Library; see the file COPYING.LIB. If not, | |
# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
# Boston, MA 02111-1307, USA. | |
# Makefile for elf subdirectory of GNU C Library. | |
subdir := elf | |
headers = elf.h bits/elfclass.h bits/dlfcn.h link.h dlfcn.h | |
routines = $(dl-routines) dl-open dl-close dl-symbol dl-support \ | |
dl-addr enbl-secure dl-profstub | |
# The core dynamic linking functions are in libc for the static and | |
# profiled libraries. | |
dl-routines = $(addprefix dl-,load cache lookup object reloc deps \ | |
runtime error init fini debug misc \ | |
version profile) | |
# But they are absent from the shared libc, because that code is in ld.so. | |
elide-routines.os = $(dl-routines) dl-support enbl-secure | |
# ld.so uses those routines, plus some special stuff for being the program | |
# interpreter and operating independent of libc. | |
rtld-routines := rtld $(dl-routines) dl-sysdep dl-environ dl-minimal | |
distribute = $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \ | |
dl-hash.h soinit.c sofini.c ldd.bash.in eval.c \ | |
genrtldtbl.awk atomicity.h dl-procinfo.h ldsodefs.h \ | |
dl-librecon.h interp.c sln.c dl-origin.h hp-timing.h \ | |
testobj1.c testobj2.c testobj3.c testobj4.c testobj5.c \ | |
testobj6.c testobj1_1.c failobj.c do-lookup.h | |
include ../Makeconfig | |
extra-libs = libdl | |
extra-libs-others = $(extra-libs) | |
libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr | |
ifeq ($(versioning),yes) | |
libdl-routines += dlopenold | |
libdl-shared-only-routines := dlopenold | |
endif | |
before-compile = $(objpfx)trusted-dirs.h | |
ifeq ($(versioning),yes) | |
ld-map = $(common-objpfx)ld.so.map | |
endif | |
ifeq (yes,$(build-shared)) | |
extra-objs = $(rtld-routines:=.os) soinit.os sofini.os eval.os interp.os | |
generated = librtld.os dl-allobjs.os ld.so trusted-dirs.h trusted-dirs.st | |
install-others = $(inst_slibdir)/$(rtld-installed-name) | |
install-bin = ldd | |
generated += ldd | |
endif | |
others = sprof sln | |
install-bin += sprof | |
others-static = sln | |
install-rootsbin = sln | |
ifeq (yes,$(has-ldconfig)) | |
others-static += ldconfig | |
others += ldconfig | |
install-rootsbin += ldconfig | |
endif | |
ifeq (yes,$(build-shared)) | |
tests = loadtest restest1 preloadtest loadfail multiload | |
endif | |
modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ | |
testobj1_1 failobj | |
extra-objs += $(modules-names:=.os) | |
ifeq ($(build-shared),yes) | |
libdl = $(objpfx)libdl.so$(libdl.so-version) | |
else | |
libdl = $(objpfx)libdl.a | |
endif | |
include ../Rules | |
ifeq (yes,$(build-shared)) | |
# Make sure these things are built in the `make lib' pass so they can be used | |
# to run programs during the `make others' pass. | |
lib-noranlib: $(objpfx)$(rtld-installed-name) \ | |
$(addprefix $(objpfx),$(extra-objs)) | |
endif | |
# Command to link into a larger single relocatable object. | |
reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@ | |
$(objpfx)dl-allobjs.os: $(rtld-routines:%=$(objpfx)%.os) | |
$(reloc-link) $^ | |
# Link together the dynamic linker into a single relocatable object. | |
$(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a | |
$(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)' | |
# Do we need a linker script? | |
rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in))) | |
ifneq (,$(rtld-ldscript-in)) | |
rtld-ldscript = $(objpfx)rtld-ldscript | |
generated += rtld-ldscript | |
LDFLAGS-rtld = -T $(rtld-ldscript) | |
before-compile += $(rtld-ldscript) | |
rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms)) | |
include $(rtld-parms) | |
$(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms) | |
sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \ | |
-e 's#@@rtld-arch@@#$(rtld-arch)#' \ | |
-e 's#@@rtld-entry@@#$(rtld-entry)#' \ | |
-e 's#@@rtld-base@@#$(rtld-base)#' $< >$@ | |
endif | |
$(objpfx)ld.so: $(objpfx)librtld.os $(addprefix $(objpfx),$(rtld-ldscript)) \ | |
$(ld-map) | |
$(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \ | |
$(filter-out $(rtld-ldscript) $(map-file),$^) \ | |
$(load-map-file) -Wl,-soname=$(rtld-installed-name) | |
# interp.c exists just to get this string into the libraries. | |
CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"' | |
ifneq (ld.so,$(rtld-installed-name)) | |
# Make sure ld.so.1 exists in the build directory so we can link | |
# against it. | |
$(objpfx)$(rtld-installed-name): $(objpfx)ld.so | |
rm -f $@ | |
ln -s $(<F) $@ | |
generated += $(rtld-installed-name) | |
endif | |
# Build a file mentioning all trustworthy directories to look for shared | |
# libraries when using LD_LIBRARY_PATH in a setuid program. The user can | |
# add directories to the list by defining $(user-defined-trusted-dirs) | |
# before starting make. | |
$(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @: | |
$(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig | |
$(make-target-directory) | |
echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))" \ | |
| $(AWK) -f gen-trusted-dirs.awk > ${@:st=T}; | |
$(move-if-change) ${@:st=T} ${@:st=h} | |
touch $@ | |
CPPFLAGS-dl-load.c = -I$(objpfx). | |
CFLAGS-dl-load.c += -Wno-uninitialized | |
# Specify the dependencies of libdl.so; its commands come from the generic | |
# rule to build a shared library. | |
$(objpfx)libdl.so: $(objpfx)libdl_pic.a $(common-objpfx)libc.so $(objpfx)ld.so | |
ifeq (yes,$(build-shared)) | |
$(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force) | |
$(do-install-program) | |
$(inst_slibdir)/$(rtld-installed-name): \ | |
$(inst_slibdir)/$(rtld-version-installed-name) | |
$(make-shlib-link) | |
# Special target called by parent to install just the dynamic linker. | |
.PHONY: ldso_install | |
ldso_install: $(inst_slibdir)/$(rtld-installed-name) | |
endif | |
common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \ | |
-e 's%@VERSION@%$(version)%g' | |
sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g' | |
bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \ | |
-e 's%@TEXTDOMAINDIR@%$(localedir)%g' | |
ifneq ($(have-bash2),yes) | |
ldd-shell = sh | |
else | |
ldd-shell = bash | |
endif | |
ifeq ($(ldd-rewrite-script),no) | |
define gen-ldd | |
sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new | |
endef | |
else | |
define gen-ldd | |
sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new | |
endef | |
endif | |
$(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \ | |
$(common-objpfx)config.make | |
$(gen-ldd) | |
chmod 555 $@.new | |
mv -f $@.new $@ | |
$(objpfx)sprof: $(libdl) | |
test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(modules-names))) | |
generated += $(addsuffix .so,$(modules-names)) | |
$(objpfx)testobj1.so: $(libdl) | |
$(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl) | |
$(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl) | |
$(objpfx)testobj3.so: $(libdl) | |
$(objpfx)testobj4.so: $(libdl) | |
$(objpfx)testobj5.so: $(libdl) | |
$(objpfx)testobj6.so: $(libdl) | |
$(objpfx)failobj.so: $(objpfx)testobj6.so | |
$(test-modules): $(objpfx)%.so: $(objpfx)%.os | |
$(build-module) | |
$(objpfx)loadtest: $(libdl) | |
LDFLAGS-loadtest = -rdynamic | |
$(objpfx)loadtest.out: $(test-modules) | |
$(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl) | |
LDFLAGS-restest1 = -rdynamic | |
$(objpfx)restest1.out: $(test-modules) | |
preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5 | |
$(objpfx)preloadtest: $(objpfx)testobj6.so | |
LDFLAGS-preloadtest = -rdynamic | |
$(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so) | |
preloadtest-ENV = \ | |
LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so))) | |
$(objpfx)loadfail: $(libdl) | |
LDFLAGS-loadfail = -rdynamic | |
$(objpfx)loadfail.out: $(objpfx)failobj.so | |
$(objpfx)multiload: $(libdl) | |
LDFLAGS-multiload = -rdynamic | |
CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\" | |
$(objpfx)multiload.out: $(objpfx)testobj1.so | |
# muwahaha | |
LDFLAGS-dl.so = -Wl,-dynamic-linker,$(slibdir)/$(rtld-installed-name) | |
$(objpfx)libdl.so: $(objpfx)eval.os |