mirror of
https://sourceware.org/git/glibc.git
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ccdb048df4
The ability to recursively call dlopen is useful for malloc implementations that wish to load other dynamic modules that implement reentrant/AS-safe functions to use in their own implementation. Given that a user malloc implementation may be called by an ongoing dlopen to allocate memory the user malloc implementation interrupts dlopen and if it calls dlopen again that's a reentrant call. This patch fixes the issues with the ld.so.cache mapping and the _r_debug assertion which prevent this from working as expected. See: https://sourceware.org/ml/libc-alpha/2014-12/msg00446.html
145 lines
4.8 KiB
Makefile
145 lines
4.8 KiB
Makefile
# Copyright (C) 1995-2015 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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subdir := dlfcn
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include ../Makeconfig
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headers := bits/dlfcn.h dlfcn.h
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extra-libs := libdl
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libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr dladdr1 dlinfo \
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dlmopen dlfcn
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routines := $(patsubst %,s%,$(filter-out dlfcn,$(libdl-routines)))
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elide-routines.os := $(routines)
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extra-libs-others := libdl
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ifeq ($(build-shared),yes)
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libdl-routines += dlopenold
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libdl-shared-only-routines := dlopenold dlfcn
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endif
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ifeq (yes,$(build-shared))
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tests = glrefmain failtest tst-dladdr default errmsg1 tstcxaatexit \
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bug-dlopen1 bug-dlsym1 tst-dlinfo bug-atexit1 bug-atexit2 \
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bug-atexit3 tstatexit bug-dl-leaf tst-rec-dlopen
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endif
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modules-names = glreflib1 glreflib2 glreflib3 failtestmod defaultmod1 \
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defaultmod2 errmsg1mod modatexit modcxaatexit \
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bug-dlsym1-lib1 bug-dlsym1-lib2 bug-atexit1-lib \
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bug-atexit2-lib bug-atexit3-lib bug-dl-leaf-lib \
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bug-dl-leaf-lib-cb moddummy1 moddummy2
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failtestmod.so-no-z-defs = yes
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glreflib2.so-no-z-defs = yes
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errmsg1mod.so-no-z-defs = yes
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ifeq (yes,$(build-shared))
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tests += tststatic tststatic2 tststatic3 tststatic4 tststatic5
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tests-static += tststatic tststatic2 tststatic3 tststatic4 tststatic5
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modules-names += modstatic modstatic2 modstatic3 modstatic5
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tststatic-ENV = LD_LIBRARY_PATH=$(objpfx):$(common-objpfx):$(common-objpfx)elf
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tststatic2-ENV = $(tststatic-ENV)
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tststatic3-ENV = $(tststatic-ENV)
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tststatic4-ENV = $(tststatic-ENV)
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tststatic5-ENV = $(tststatic-ENV)
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endif
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extra-test-objs += $(modules-names:=.os)
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generated += $(modules-names:=.so)
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include ../Rules
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test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(modules-names)))
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ifeq ($(build-shared),yes)
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# Build all the modules even when not actually running test programs.
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tests: $(test-modules)
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endif
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$(objpfx)glrefmain: $(libdl)
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$(objpfx)glrefmain.out: $(objpfx)glrefmain \
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$(objpfx)glreflib1.so $(objpfx)glreflib2.so
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$(objpfx)failtest: $(libdl)
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$(objpfx)failtest.out: $(objpfx)failtestmod.so
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$(objpfx)tst-dladdr: $(libdl)
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$(objpfx)tst-dladdr.out: $(objpfx)glreflib1.so
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$(objpfx)tst-dlinfo: $(libdl)
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$(objpfx)tst-dlinfo.out: $(objpfx)glreflib3.so
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LDFLAGS-glreflib3.so = -Wl,-rpath,:
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LDFLAGS-default = $(LDFLAGS-rdynamic)
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$(objpfx)default: $(libdl) $(objpfx)defaultmod1.so $(objpfx)defaultmod2.so
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$(objpfx)defaultmod1.so: $(libdl)
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LDFLAGS-defaultmod2.so = $(LDFLAGS-Bsymbolic)
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$(objpfx)defaultmod2.so: $(libdl)
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$(objpfx)errmsg1: $(libdl)
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$(objpfx)errmsg1.out: $(objpfx)errmsg1 $(objpfx)errmsg1mod.so
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$(objpfx)tstatexit: $(libdl)
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$(objpfx)tstatexit.out: $(objpfx)tstatexit $(objpfx)modatexit.so
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$(objpfx)tstcxaatexit: $(libdl)
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$(objpfx)tstcxaatexit.out: $(objpfx)tstcxaatexit $(objpfx)modcxaatexit.so
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$(objpfx)tststatic: $(objpfx)libdl.a
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$(objpfx)tststatic.out: $(objpfx)tststatic $(objpfx)modstatic.so
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$(objpfx)tststatic2: $(objpfx)libdl.a
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$(objpfx)tststatic2.out: $(objpfx)tststatic2 $(objpfx)modstatic.so \
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$(objpfx)modstatic2.so
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$(objpfx)modstatic2.so: $(libdl)
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$(objpfx)tststatic3: $(objpfx)libdl.a
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$(objpfx)tststatic3.out: $(objpfx)tststatic3 $(objpfx)modstatic3.so
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$(objpfx)tststatic4: $(objpfx)libdl.a
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$(objpfx)tststatic4.out: $(objpfx)tststatic4 $(objpfx)modstatic3.so
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$(objpfx)tststatic5: $(objpfx)libdl.a
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$(objpfx)tststatic5.out: $(objpfx)tststatic5 $(objpfx)modstatic5.so
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$(objpfx)bug-dlopen1: $(libdl)
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$(objpfx)bug-dlsym1: $(libdl) $(objpfx)bug-dlsym1-lib2.so
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$(objpfx)bug-dlsym1.out: $(objpfx)bug-dlsym1-lib1.so \
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$(objpfx)bug-dlsym1-lib2.so
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$(objpfx)bug-dlsym1-lib1.so: $(objpfx)bug-dlsym1-lib2.so
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$(objpfx)bug-atexit1: $(libdl)
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$(objpfx)bug-atexit1.out: $(objpfx)bug-atexit1-lib.so
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$(objpfx)bug-atexit2: $(libdl)
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$(objpfx)bug-atexit2.out: $(objpfx)bug-atexit2-lib.so
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LDLIBS-bug-atexit3-lib.so = -lstdc++ -lgcc_eh
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$(objpfx)bug-atexit3: $(libdl)
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$(objpfx)bug-atexit3.out: $(objpfx)bug-atexit3-lib.so
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$(objpfx)bug-dl-leaf: $(objpfx)bug-dl-leaf-lib.so
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$(objpfx)bug-dl-leaf.out: $(objpfx)bug-dl-leaf-lib-cb.so
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$(objpfx)bug-dl-leaf-lib.so: $(libdl)
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$(objpfx)bug-dl-leaf-lib-cb.so: $(objpfx)bug-dl-leaf-lib.so
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$(objpfx)tst-rec-dlopen: $(libdl)
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$(objpfx)tst-rec-dlopen.out: $(objpfx)moddummy1.so $(objpfx)moddummy2.so
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