[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 Alan Modra changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at sourceware dot org |amodra at gmail dot com --- Comment #8 from Alan Modra --- Created attachment 12319 --> https://sourceware.org/bugzilla/attachment.cgi?id=12319=edit delay adding dt_needed tags This is what I'm testing at the moment. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 --- Comment #7 from H.J. Lu --- (In reply to Alan Modra from comment #6) > By "won't work" I mean won't preserve the original order of libraries. By > the look of it, if you are linking --as-needed t.o a.so b,so c.so with a t.o > that is lto and requires all three libraries, then your patch will result in > dt_needed entries in the order c.so, b.so, a.so. I will see what I can do. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 --- Comment #6 from Alan Modra --- By "won't work" I mean won't preserve the original order of libraries. By the look of it, if you are linking --as-needed t.o a.so b,so c.so with a t.o that is lto and requires all three libraries, then your patch will result in dt_needed entries in the order c.so, b.so, a.so. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 --- Comment #5 from H.J. Lu --- (In reply to Alan Modra from comment #4) > My guess is that a simple patch like that won't work when you have more > libraries > and/or a mix of lto/non-lto objects. My patch places newly discovered DT_NEEDED library by LTO plugin before non-LTO ones. This should make LTO case similar to without. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 Alan Modra changed: What|Removed |Added CC||amodra at gmail dot com --- Comment #4 from Alan Modra --- My guess is that a simple patch like that won't work when you have more libraries and/or a mix of lto/non-lto objects. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 --- Comment #3 from H.J. Lu --- Created attachment 12318 --> https://sourceware.org/bugzilla/attachment.cgi?id=12318=edit Try this -- You are receiving this mail because: You are on the CC list for the bug.
[Bug binutils/25499] Documentation typo in binutils.texi: debuging -> debugging
https://sourceware.org/bugzilla/show_bug.cgi?id=25499 Nick Clifton changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED CC||nickc at redhat dot com Resolution|--- |FIXED --- Comment #2 from Nick Clifton --- Patch applied. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593
--- Comment #2 from H.J. Lu ---
(In reply to Richard Biener from comment #0)
> echo 'void foo() {}' > libt.c
> echo 'void foo(); int main() { foo(); }' > t.c
> gcc -o libt.so -shared libt.c -Wl,-soname,libt.so -fPIC -flto
> gcc -c t.c -flto
> gcc -Wl,--as-needed t.o libt.so
> readelf -d a.out | grep NEEDED
> 0x0001 (NEEDED) Shared library: [libc.so.6]
> 0x0001 (NEEDED) Shared library: [libt.so]
>
> but libc has to come last so the program can use RTLD_NEXT to arrive at
> symbols from libc. Works fine with gold.
[hjl@gnu-cfl-2 pr25593]$ make
gcc -flto -c -o t.o t.c
gcc -fPIC -c -o libt.o libt.c
ld -shared -o libt.so libt.o
gcc -Wl,--as-needed -o x t.o libt.so
readelf -d x | grep NEEDED
0x0001 (NEEDED) Shared library: [libc.so.6]
0x0001 (NEEDED) Shared library: [libt.so]
[hjl@gnu-cfl-2 pr25593]$ rm libt.so
[hjl@gnu-cfl-2 pr25593]$ make LD=ld.gold
ld.gold -shared -o libt.so libt.o
gcc -Wl,--as-needed -o x t.o libt.so
readelf -d x | grep NEEDED
0x0001 (NEEDED) Shared library: [libc.so.6]
0x0001 (NEEDED) Shared library: [libt.so]
[hjl@gnu-cfl-2 pr25593]$ rm libt.so
[hjl@gnu-cfl-2 pr25593]$ make LD=gcc
gcc -shared -o libt.so libt.o
gcc -Wl,--as-needed -o x t.o libt.so
readelf -d x | grep NEEDED
0x0001 (NEEDED) Shared library: [libc.so.6]
0x0001 (NEEDED) Shared library: [libt.so]
[hjl@gnu-cfl-2 pr25593]$ gcc -Wl,--as-needed -o x t.o libt.so -fuse-ld=gold
[hjl@gnu-cfl-2 pr25593]$ make
readelf -d x | grep NEEDED
0x0001 (NEEDED) Shared library: [libt.so]
0x0001 (NEEDED) Shared library: [libc.so.6]
[hjl@gnu-cfl-2 pr25593]$
ld needs to check DT_NEEDED of libt.so.
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[Bug binutils/25499] Documentation typo in binutils.texi: debuging -> debugging
https://sourceware.org/bugzilla/show_bug.cgi?id=25499 --- Comment #1 from cvs-commit at gcc dot gnu.org --- The master branch has been updated by Nick Clifton : https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=83d4d556e29da05aa7aec28ae53be7524c05bedd commit 83d4d556e29da05aa7aec28ae53be7524c05bedd Author: Nick Clifton Date: Mon Feb 24 14:39:34 2020 + Fix a spelling mistake in the binutils documentation. PR 25499 * doc/binutils.texi (objdump): Fix typo in description of objdump's -g option. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 Michael Matz changed: What|Removed |Added CC||matz at suse dot de --- Comment #1 from Michael Matz --- Just to be explicit: also works fine without -flto when compiling t.c. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 Fabian Vogt changed: What|Removed |Added CC||fab...@ritter-vogt.de -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593 Richard Biener changed: What|Removed |Added CC||hjl.tools at gmail dot com See Also||https://bugzilla.suse.com/s ||how_bug.cgi?id=1163744 -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25593] New: --as-needed breaks DT_NEEDED order with linker plugin
https://sourceware.org/bugzilla/show_bug.cgi?id=25593
Bug ID: 25593
Summary: --as-needed breaks DT_NEEDED order with linker plugin
Product: binutils
Version: 2.33
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
echo 'void foo() {}' > libt.c
echo 'void foo(); int main() { foo(); }' > t.c
gcc -o libt.so -shared libt.c -Wl,-soname,libt.so -fPIC -flto
gcc -c t.c -flto
gcc -Wl,--as-needed t.o libt.so
readelf -d a.out | grep NEEDED
0x0001 (NEEDED) Shared library: [libc.so.6]
0x0001 (NEEDED) Shared library: [libt.so]
but libc has to come last so the program can use RTLD_NEXT to arrive at
symbols from libc. Works fine with gold.
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[Bug binutils/22829] objcopy/strip removes PT_GNU_RELRO from lld binaries
https://sourceware.org/bugzilla/show_bug.cgi?id=22829 --- Comment #13 from NGG --- (In reply to Fangrui Song from comment #12) > The lld issue was introduced by https://reviews.llvm.org/rL291523 > and was fixed by https://reviews.llvm.org/D56828 . > It affected lld [4.0,8.0). Before 8.0, lld was not very stable. The fix you mentioned is not in the 8.0 lld release, but only in 9.0 (https://github.com/llvm-mirror/lld/blob/release_90/ELF/Writer.cpp contains the fix, but https://github.com/llvm-mirror/lld/blob/release_80/ELF/Writer.cpp does not) -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/25591] Should /DISCARD/ : { *(.symtab) *(.strtab) } work?
https://sourceware.org/bugzilla/show_bug.cgi?id=25591 Borislav Petkov changed: What|Removed |Added CC||bp at alien8 dot de -- You are receiving this mail because: You are on the CC list for the bug.
