mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 10:50:07 +00:00
f18edac3a3
* elf/Makefile (dl-routines): Add dl-cache. * elf/dl-cache.c: New file. * elf/dl-load.c (_dl_map_object): Check cache before default path.
113 lines
3.8 KiB
Makefile
113 lines
3.8 KiB
Makefile
# Makefile for elf subdirectory of GNU C Library.
|
||
|
||
# Copyright (C) 1995, 1996 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., 675 Mass Ave,
|
||
# Cambridge, MA 02139, USA.
|
||
|
||
subdir := elf
|
||
|
||
headers = elf.h elfclass.h link.h dlfcn.h
|
||
routines = $(dl-routines) dl-open dl-close dl-symbol dl-support
|
||
|
||
# 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)
|
||
# But they are absent from the shared libc, because that code is in ld.so.
|
||
elide-routines.so = $(dl-routines) dl-support
|
||
|
||
# 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-minimal
|
||
distribute = $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \
|
||
soinit.c sofini.c ldd.sh.in eval.c
|
||
|
||
extra-libs = libdl
|
||
libdl-routines := dlopen dlclose dlsym dlerror dladdr
|
||
|
||
|
||
all: # Make this the default target; it will be defined in Rules.
|
||
|
||
include ../Makeconfig
|
||
|
||
ifeq (yes,$(build-shared))
|
||
extra-objs = $(rtld-routines:=.so) soinit.so sofini.so
|
||
generated = librtld.so dl-allobjs.so
|
||
install-others = $(slibdir)/$(rtld-installed-name)
|
||
install-bin = ldd
|
||
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.so: $(rtld-routines:%=$(objpfx)%.so)
|
||
$(reloc-link) $^
|
||
|
||
# Link together the dynamic linker into a single relocatable object.
|
||
# We use this to produce both the ABI-compliant and Linux-compatible
|
||
# dynamic linker shared objects below.
|
||
$(objpfx)librtld.so: $(objpfx)dl-allobjs.so \
|
||
$(patsubst %,$(common-objpfx)lib%_pic.a,\
|
||
c $(LDLIBS-c.so:-l%=%))
|
||
$(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
|
||
|
||
$(objpfx)ld.so: $(objpfx)librtld.so
|
||
$(rtld-link) -Wl,-soname=$(rtld-installed-name)
|
||
|
||
define rtld-link
|
||
$(LINK.o) -nostdlib -nostartfiles -shared -o $@ \
|
||
-Wl,-rpath=$(default-rpath) $^
|
||
endef
|
||
|
||
# The dl code in the static libc needs a default library path.
|
||
CFLAGS-dl-support.c = -D'DEFAULT_RPATH="$(default-rpath)"'
|
||
|
||
ifneq (ld.so, $(rtld-installed-name))
|
||
# Make sure ld-gnu.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) $@
|
||
endif
|
||
|
||
|
||
# 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
|
||
|
||
$(slibdir)/$(rtld-installed-name): $(objpfx)ld.so; $(do-install-program)
|
||
|
||
$(objpfx)ldd: ldd.sh.in Makefile
|
||
sed 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' < $< > $@.new
|
||
chmod 555 $@.new
|
||
mv -f $@.new $@
|
||
|
||
# muwahaha
|
||
|
||
LDFLAGS-dl.so = -Wl,-dynamic-linker,$(slibdir)/$(rtld-installed-name)
|
||
$(objpfx)libdl.so: $(objpfx)eval.so
|