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[gdb/build] Fix gdbserver build with -fsanitize=address

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When doing a gdbserver build with CFLAGS/CXXFLAGS/LDFLAGS=-fsanitize=address
we run into:
...
ld: ../libiberty/libiberty.a(safe-ctype.o):
relocation R_X86_64_32 against `.data' can not be used when making a
shared object; recompile with -fPIC
collect2: error: ld returned 1 exit status
make[1]: *** [libinproctrace.so] Error 1
...

This started with commit 9664849417 "gdbsupport: make use of safe-ctype
functions from libiberty", which introduced a dependency of libinproctrace.so
on libiberty.

Fix this in gdbserver/Makefile.in by using a setup similar to what is done in
gcc-repo/src/libcc1/Makefile.am, such that ../libiberty/noasan/libiberty.a is
used instead.

Build on x86_64-linux, both with and without -fsanitize=address.

gdbserver/ChangeLog:

2021-01-07  Tom de Vries  <tdevries@suse.de>

	* Makefile.in (LIBIBERTY_NORMAL, LIBIBERTY_NOASAN, LIBIBERTY_PIC):
	(LIBIBERTY_FOR_SHLIB): New var.
	(LIBIBERTY): Set using $(LIBIBERTY_NORMAL).
	(IPA_LIB): Use LIBIBERTY_FOR_SHLIB instead of LIBIBERTY in target rule.
This commit is contained in:
Tom de Vries 2021-01-07 10:37:51 +01:00
parent aa881ecde4
commit 78e4948694
2 changed files with 18 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

7
gdbserver/ChangeLog
View file

@ -1,3 +1,10 @@
2021-01-07 Tom de Vries <tdevries@suse.de>
* Makefile.in (LIBIBERTY_NORMAL, LIBIBERTY_NOASAN, LIBIBERTY_PIC):
(LIBIBERTY_FOR_SHLIB): New var.
(LIBIBERTY): Set using $(LIBIBERTY_NORMAL).
(IPA_LIB): Use LIBIBERTY_FOR_SHLIB instead of LIBIBERTY in target rule.
2021-01-04 Simon Marchi <simon.marchi@efficios.com>
* debug.cc (debug_print_depth): New.

13
gdbserver/Makefile.in
View file

@ -103,7 +103,16 @@ INCLUDE_DIR = ${srcdir}/../include
INCLUDE_DEP = $$(INCLUDE_DIR)
LIBIBERTY_BUILDDIR = ../libiberty
LIBIBERTY = $(LIBIBERTY_BUILDDIR)/libiberty.a
LIBIBERTY_NORMAL = $(LIBIBERTY_BUILDDIR)/libiberty.a
LIBIBERTY_NOASAN = $(LIBIBERTY_BUILDDIR)/noasan/libiberty.a
LIBIBERTY_PIC = $(LIBIBERTY_BUILDDIR)/pic/libiberty.a
LIBIBERTY_FOR_SHLIB = \
$(if $(wildcard $(LIBIBERTY_NOASAN)),\
$(LIBIBERTY_NOASAN),\
$(if $(wildcard $(LIBIBERTY_PIC)),\
$(LIBIBERTY_PIC),\
$(LIBIBERTY_NORMAL)))
LIBIBERTY = $(LIBIBERTY_NORMAL)
GDBSUPPORT_BUILDDIR = ../gdbsupport
GDBSUPPORT = $(GDBSUPPORT_BUILDDIR)/libgdbsupport.a
@ -395,7 +404,7 @@ $(IPA_LIB): $(sort $(IPA_OBJS)) ${CDEPS}
$(ECHO_CXXLD) $(CC_LD) -shared -fPIC -Wl,--soname=$(IPA_LIB) \
-Wl,--no-undefined $(INTERNAL_CFLAGS) $(INTERNAL_LDFLAGS) \
$(CXXFLAGS) \
-o $(IPA_LIB) ${IPA_OBJS} $(LIBIBERTY) -ldl -pthread
-o $(IPA_LIB) ${IPA_OBJS} $(LIBIBERTY_FOR_SHLIB) -ldl -pthread
# Put the proper machine-specific files first, so M-. on a machine
# specific routine gets the one for the correct machine.