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* DWARF-5 is now used by default with gcc-11, causing
11.1.0/ld: internal error in format_file_lineno, at ../../gold/dwarf_reader.cc:2278
collect2: error: ld returned 1 exit status
in various projects (runc-opencontainers, libhybris, collada-dom)
* https://gcc.gnu.org/gcc-11/changes.html
For targets that produce DWARF debugging information GCC now defaults to DWARF version 5
(with the exception of VxWorks and Darwin/Mac OS X which default to version 2 and
AIX which defaults to version 4). This can produce up to 25% more compact debug
information compared to earlier versions.
To take full advantage of DWARF version 5 GCC needs to be build against binutils version 2.35.2 or higher.
When GCC is build against earlier versions of binutils GCC will still emit DWARF version 5 for
most debuginfo data, but will generate version 4 debug line tables (even when explicitly given -gdwarf-5).
The following debug information consumers can process DWARF version 5:
GDB 8.0, or higher
valgrind 3.17.0
elfutils 0.172, or higher (for use with systemtap, dwarves/pahole, perf and libabigail)
dwz 0.14
Programs embedding libbacktrace are urged to upgrade to the version shipping with GCC 11.
To make GCC 11 generate an older DWARF version use -g together with -gdwarf-2, -gdwarf-3 or -gdwarf-4.
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Source: git://sourceware.org/git/binutils-gdb.git
Tracking -- https://sourceware.org/bugzilla/show_bug.cgi?id=26945
Backported upstream commit d3edaa91d4cf7202ec14342410194841e2f67f12 to
binutils-2.36 source along with commit id dependencies
(8e03235147a9e774d3ba084e93c2da1aa94d1cec and 8b69e61d4be276bb862698aaafddc3e779d23c8f).
Signed-off-by: Vinay Kumar <vinay.m.engg@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Since GCC 11 will switch to dwarf-5 as default, this patch will be
required soon
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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If BRANCH is defined in local.conf then that name is used to d/l sources
for binutils. You will get this error:
Fetcher failure for URL: 'git://sourceware.org/git/binutils-gdb.git;branch=hardknott;protocol=git'. Unable to fetch URL from any source.
Rename to SRCBRANCH like glibc has to avoid the more common variable name BRANCH.
Signed-off-by: Armin Kuster <akuster808@gmail.com>
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V2]
Remove commented out BINUPV and function
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Drop backported patches which are already present in 2.36 release
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Martin Jansa
Vinay Kumar
Khem Raj
Armin Kuster