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Sandra Loosemore 02ce382cd3 Use a non-empty test program to test ability to link. 
On bare-metal targets, I/O support is typically provided by a BSP and
requires a linker script and/or hosting library to be specified on the
linker command line.  Linking an empty program with the default linker
script may succeed, however, which confuses libstdc++ configuration
when programs that probe for the presence of various I/O features fail
with link errors.

2020-02-12  Sandra Loosemore  <sandra@codesourcery.com>

	PR libstdc++/79193
	PR libstdc++/88999

	config/
	* no-executables.m4: Use a non-empty program to test for linker
	support.

	libgcc/
	* configure: Regenerated.

	libgfortran/
	* configure: Regenerated.

	libiberty/
	* configure: Regenerated.

	libitm/
	* configure: Regenerated.

	libobjc/
	* configure: Regenerated.

	libquadmath/
	* configure: Regenerated.

	libssp/
	* configure: Regenerated.

	libstdc++v-3/
	* configure: Regenerated.
2020-02-12 13:22:07 -08:00
config Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
contrib contrib: Change 'remote' for personal branches and add branch creation script 2020-01-24 14:38:16 +00:00
fixincludes Fix missing SCNuMAX defines in inttypes.h on hpux11.[01]* 2020-01-25 12:20:24 -05:00
gcc real: Fix roundeven on inf/nan [PR93663] 2020-02-12 22:15:40 +01:00
gnattools PR81878: fix --disable-bootstrap --enable-languages=ada 2018-11-20 00:07:47 +00:00
gotools libgo: update to Go1.14beta1 2020-01-21 23:53:22 -08:00
include libiberty/hashtab: More const parameters 2020-02-05 13:01:06 +00:00
INSTALL
intl Fixes after recent configure changes relating to static libraries 2020-02-01 00:34:28 +00:00
libada Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libatomic Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libbacktrace libbacktrace: always pass -g when compiling test code 2020-02-03 18:13:28 -08:00
libcc1 c++: Fix return type deduction with an abbreviated function template 2020-02-10 20:43:53 -05:00
libcpp Regenerate .pot files. 2020-02-07 22:35:59 +00:00
libdecnumber Update copyright years. 2020-01-01 12:51:42 +01:00
libffi Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libgcc Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
libgfortran Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
libgo syscall: fix riscv64 GNU/Linux build 2020-02-03 18:14:19 -08:00
libgomp Add xfails to libgomp tests target-{33,34}.c, target-link-1.c 2020-02-10 09:16:46 +01:00
libhsail-rt Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libiberty Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
libitm Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
libobjc Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
liboffloadmic Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libphobos Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libquadmath Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
libsanitizer Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libssp Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
libstdc++-v3 Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
libvtv Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
lto-plugin Update copyright years. 2020-01-01 12:51:42 +01:00
maintainer-scripts Replace update_web_docs_libstdcxx_svn with update_web_docs_libstdcxx_git 2020-01-13 21:40:44 +00:00
zlib Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
.dir-locals.el
.gitattributes Add *.md diff=md. 2020-01-15 14:29:53 +01:00
.gitignore Add .clangd and compile_commands.json to .gitignore. 2019-08-28 19:33:28 +00:00
ABOUT-NLS
ar-lib
ChangeLog rs6000: Update constraint documentation 2020-02-03 18:23:51 +00:00
ChangeLog.jit
ChangeLog.tree-ssa
compile
config-ml.in MSP430: Add -fno-exceptions multilib 2019-12-11 19:19:50 +00:00
config.guess Update config.sub and config.guess. 2019-09-09 11:14:32 +02:00
config.rpath
config.sub Update config.sub and config.guess. 2019-09-09 11:14:32 +02:00
configure configure.ac: Factor out common cases for compare_exclusions. 2019-12-11 20:59:35 +00:00
configure.ac configure.ac: Factor out common cases for compare_exclusions. 2019-12-11 20:59:35 +00:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.RUNTIME
depcomp
install-sh
libtool-ldflags
libtool.m4 [ARM/FDPIC v6 02/24] [ARM] FDPIC: Handle arm*-*-uclinuxfdpiceabi in configure scripts 2019-09-10 09:37:00 +02:00
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS MAINTAINERS: Update my email address. 2020-01-13 22:10:14 +03:00
Makefile.def Sync top-level change from gdb 2019-06-15 21:32:03 +00:00
Makefile.in Makefile.tpl (HOST_EXPORTS): Add CXX_FOR_BUILD. 2019-08-23 15:37:22 -06:00
Makefile.tpl Makefile.tpl (HOST_EXPORTS): Add CXX_FOR_BUILD. 2019-08-23 15:37:22 -06:00
missing
mkdep
mkinstalldirs
move-if-change
multilib.am
README
symlink-tree
test-driver
ylwrap

README 

This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
names start with COPYING for copying permission.  The manuals, and
some of the runtime libraries, are under different terms; see the
individual source files for details.

The directory INSTALL contains copies of the installation information
as HTML and plain text.  The source of this information is
gcc/doc/install.texi.  The installation information includes details
of what is included in the GCC sources and what files GCC installs.

See the file gcc/doc/gcc.texi (together with other files that it
includes) for usage and porting information.  An online readable
version of the manual is in the files gcc/doc/gcc.info*.

See http://gcc.gnu.org/bugs/ for how to report bugs usefully.

Copyright years on GCC source files may be listed using range
notation, e.g., 1987-2012, indicating that every year in the range,
inclusive, is a copyrightable year that could otherwise be listed
individually.