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Tom de Vries 1e61189d0a [gdb/testsuite] Fix shlib compilation with target board unix/-pie/-fPIE
When running test-case gdb.base/info-shared.exp with target board
unix/-pie/-fPIE, we run into:
...
spawn -ignore SIGHUP gcc -fno-stack-protector \
  outputs/gdb.base/info-shared/info-shared-solib1.c.o \
  -fdiagnostics-color=never -fPIC -shared -Wl,-soname,info-shared-solib1.so \
  -lm -fPIE -pie -o outputs/gdb.base/info-shared/info-shared-solib1.so^M
ld: Scrt1.o: in function `_start':^M
start.S:104: undefined reference to `main'^M
collect2: error: ld returned 1 exit status^M
compiler exited with status 1
...

The intention of the -pie/-fPIE flags is to build and test PIE executables on
platforms where that is not the default.  However, the flags clash with the
flags required to build shared libraries.

Fix this by filtering out PIE-related flags out of the multilib_flags settings
in compile_shared_lib.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-12-16  Tom de Vries  <tdevries@suse.de>

	* lib/gdb.exp (gdb_compile_shlib_1): Factor out of ...
	(gdb_compile_shlib): ... here.  Filter out PIE-related flags.
2020-12-16 18:18:40 +01:00
bfd constify elfNN_bed 2020-12-16 15:17:53 +10:30
binutils Handle DT_GNU_FLAGS_1 in readelf 2020-12-15 18:45:09 +10:30
config sync libiberty from gcc 2020-09-08 20:12:57 +09:30
contrib Import mklog.py from gcc repo 2020-09-25 10:24:44 -04:00
cpu Fix spelling mistakes 2020-10-05 14:20:15 +01:00
elfcpp Cosmetic improvements for OSABI access. 2020-12-15 14:37:22 -08:00
etc
gas constify elfNN_bed 2020-12-16 15:17:53 +10:30
gdb [gdb/testsuite] Fix shlib compilation with target board unix/-pie/-fPIE 2020-12-16 18:18:40 +01:00
gdbserver Fix TBI handling for watchpoints 2020-12-16 10:05:56 -03:00
gdbsupport gdbsupport: make use of safe-ctype functions from libiberty 2020-12-11 22:04:28 +00:00
gnulib gnulib: Ensure all libraries are used when building gdb/gdbserver 2020-10-09 09:31:43 +01:00
gold Cosmetic improvements for OSABI access. 2020-12-15 14:37:22 -08:00
gprof Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
include constify elfNN_bed 2020-12-16 15:17:53 +10:30
intl
ld constify elfNN_bed 2020-12-16 15:17:53 +10:30
libctf libctf: Pass format argument to asprintf 2020-11-25 19:11:36 +00:00
libdecnumber Run autoreconf -vf throughout 2020-07-29 16:03:55 -04:00
libiberty Sync libiberty and include with GCC for get_DW_UT_name. 2020-09-24 22:55:24 +02:00
opcodes RISC-V: Add sext.[bh] and zext.[bhw] pseudo instructions. 2020-12-10 10:50:44 +08:00
readline
sim Add support for the SDIV and UDIV instructions to the ARM simulator. 2020-12-15 12:40:35 +00:00
texinfo
zlib
.cvsignore
.gitattributes
.gitignore Add gnu global outputs to .gitignore 2020-12-02 10:00:27 -05:00
ar-lib
ChangeLog Add gnu global outputs to .gitignore 2020-12-02 10:00:27 -05:00
compile
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Makefile.def gdb/gdbserver: add dependencies for distclean-gnulib 2020-10-14 15:05:14 +01:00
Makefile.in gdb/gdbserver: add dependencies for distclean-gnulib 2020-10-14 15:05:14 +01:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.