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Jakub Jelinek a49a96f681 i386, debug: Default to -gdwarf-4 on Windows targets with broken ld.bfd [PR98860]
As mentioned in the PR, before the
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=ba6eb62ff0ea9843a018cfd7cd06777bd66ae0a0
fix from March 1st, PECOFF ld.bfd didn't know about .debug_loclists,
.debug_rnglists and other debug sections new in DWARF 5.  Unfortunately,
unlike for ELF linkers, that means the sections were placed in wrong
ordering with wrong VMA/LMA, so the resulting executables are apparently
unusable.

As that is pretty new change, newer than 2.35.2 or 2.36 binutils releases,
the following patch adds a workaround that turns -gdwarf-4 by default
instead of -gdwarf-5 if a broken linker is found at configure time.
Users can still explicitly play with -gdwarf-5 and either use a non-broken
linker or use custom linker scripts for the broken one, but at least
by default it should work.

2021-03-31  Jakub Jelinek  <jakub@redhat.com>

	PR bootstrap/98860
	* configure.ac (HAVE_LD_BROKEN_PE_DWARF5): New AC_DEFINE if PECOFF
	linker doesn't support DWARF sections new in DWARF5.
	* config/i386/i386-options.c (ix86_option_override_internal): Default
	to dwarf_version 4 if HAVE_LD_BROKEN_PE_DWARF5 for TARGET_PECOFF
	targets.
	* config.in: Regenerated.
	* configure: Regenerated.
2021-03-31 09:11:29 +02:00
c++tools Daily bump. 2021-02-26 00:16:36 +00:00
config Daily bump. 2021-01-06 00:16:55 +00:00
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fixincludes Daily bump. 2020-12-15 00:16:35 +00:00
gcc i386, debug: Default to -gdwarf-4 on Windows targets with broken ld.bfd [PR98860] 2021-03-31 09:11:29 +02:00
gnattools
gotools Daily bump. 2021-02-03 00:16:23 +00:00
include c++: Adjust mangling of __alignof__ [PR88115] 2021-03-30 22:57:11 -04:00
INSTALL
intl
libada Update copyright years. 2021-01-04 10:26:59 +01:00
libatomic Daily bump. 2021-01-16 00:16:29 +00:00
libbacktrace Daily bump. 2021-03-04 00:16:48 +00:00
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libgo libgo: update to Go 1.16.2 release 2021-03-15 14:52:55 -07:00
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libiberty c++: Adjust mangling of __alignof__ [PR88115] 2021-03-30 22:57:11 -04:00
libitm Daily bump. 2021-01-16 00:16:29 +00:00
libobjc Daily bump. 2021-01-06 00:16:55 +00:00
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maintainer-scripts Daily bump. 2020-12-17 00:16:37 +00:00
zlib Daily bump. 2021-01-06 00:16:55 +00:00
.dir-locals.el .dir-locals.el: Set 'fill-column' to 80 for c-mode 2020-12-14 12:19:56 +01:00
.gitattributes
.gitignore Sync .gitignore with binutils-gdb 2020-12-02 11:04:01 -07:00
ABOUT-NLS
ar-lib
ChangeLog Daily bump. 2021-03-27 00:16:27 +00:00
ChangeLog.jit
ChangeLog.tree-ssa
compile
config-ml.in config-ml.in: Suppress output from multi-do recipes 2020-11-09 14:28:37 +00:00
config.guess config.sub, config.guess : Import upstream 2021-01-25. 2021-02-23 17:21:10 +08:00
config.rpath
config.sub config.sub, config.guess : Import upstream 2021-01-25. 2021-02-23 17:21:10 +08:00
configure Add C++tools 2020-12-15 07:42:59 -08:00
configure.ac Add C++tools 2020-12-15 07:42:59 -08:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.RUNTIME
depcomp
install-sh
libtool-ldflags
libtool.m4 Update GNU/Hurd configure support 2021-01-05 16:04:14 -07:00
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS MAINTAINERS: Add myself as pru port maintainer 2021-03-26 19:52:24 +02:00
Makefile.def sim: drop dep on configure-gdb 2021-03-12 19:48:13 -05:00
Makefile.in sim: drop dep on configure-gdb 2021-03-12 19:48:13 -05:00
Makefile.tpl Add -fprofile-reproducible=parallel-runs to STAGEfeedback_CFLAGS to Makefile.tpl. 2021-03-11 16:18:56 +01:00
missing
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This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
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some of the runtime libraries, are under different terms; see the
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The directory INSTALL contains copies of the installation information
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