02e5ffd5db
When building gcc with some specific LDFLAGS_FOR_TARGET, e.g.
LDFLAGS_FOR_TARGET=-Wl,-z,relro,-z,now
those flags propagate info linking of target shared libraries,
e.g. lib{ubsan,tsan,stdc++,quadmath,objc,lsan,itm,gphobos,gdruntime,gomp,go,gfortran,atomic,asan}.so.*
but there is one important exception, libgcc_s.so.* linking ignores it.
The following patch fixes that.
Bootstrapped/regtested on x86_64-linux with LDFLAGS_FOR_TARGET=-Wl,-z,relro,-z,now
and verified that libgcc_s.so.* is BIND_NOW when it previously wasn't, and
without any LDFLAGS_FOR_TARGET on x86_64-linux and i686-linux.
There on x86_64-linux I've verified that the libgcc_s.so.1 linking command
line for -m64 is identical except for whitespace to one without the patch,
and for -m32 multilib $(LDFLAGS) actually do supply there an extra -m32
that also repeats later in the @multilib_flags@, which should be harmless.
2021-08-04 Jakub Jelinek <jakub@redhat.com>
* config/t-slibgcc (SHLIB_LINK): Add $(LDFLAGS).
* config/t-slibgcc-darwin (SHLIB_LINK): Likewise.
* config/t-slibgcc-vms (SHLIB_LINK): Likewise.
* config/t-slibgcc-fuchsia (SHLIB_LDFLAGS): Remove $(LDFLAGS).
54 lines
1.9 KiB
Plaintext
54 lines
1.9 KiB
Plaintext
# Copyright (C) 2001-2021 Free Software Foundation, Inc.
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#
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# This file is part of GCC.
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#
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# GCC is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# GCC 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GCC; see the file COPYING3. If not see
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# <http://www.gnu.org/licenses/>.
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# Build a shared libgcc library.
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SHLIB_EXT = .so
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SHLIB_SOLINK = @shlib_base_name@.so
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SHLIB_SOVERSION = 1
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SHLIB_SONAME = @shlib_base_name@.so.$(SHLIB_SOVERSION)
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SHLIB_MAP = @shlib_map_file@
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SHLIB_OBJS = @shlib_objs@
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SHLIB_DIR = @multilib_dir@
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SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@
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SHLIB_LC = -lc
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SHLIB_MAKE_SOLINK = $(LN_S) $(SHLIB_SONAME) $(SHLIB_DIR)/$(SHLIB_SOLINK)
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SHLIB_INSTALL_SOLINK = $(LN_S) $(SHLIB_SONAME) \
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$(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK)
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SHLIB_LINK = $(CC) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
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$(SHLIB_LDFLAGS) $(LDFLAGS) \
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-o $(SHLIB_DIR)/$(SHLIB_SONAME).tmp @multilib_flags@ \
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$(SHLIB_OBJS) $(SHLIB_LC) && \
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rm -f $(SHLIB_DIR)/$(SHLIB_SOLINK) && \
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if [ -f $(SHLIB_DIR)/$(SHLIB_SONAME) ]; then \
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mv -f $(SHLIB_DIR)/$(SHLIB_SONAME) \
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$(SHLIB_DIR)/$(SHLIB_SONAME).backup; \
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else true; fi && \
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mv $(SHLIB_DIR)/$(SHLIB_SONAME).tmp $(SHLIB_DIR)/$(SHLIB_SONAME) && \
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$(SHLIB_MAKE_SOLINK)
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INSTALL_SHLIB = $(INSTALL_DATA)
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SHLIB_INSTALL = \
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$(mkinstalldirs) $(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL); \
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$(INSTALL_SHLIB) $(SHLIB_DIR)/$(SHLIB_SONAME) \
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$(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SONAME); \
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rm -f $(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK); \
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$(SHLIB_INSTALL_SOLINK)
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