In GNU ld and ld.lld, -d is used with -r to allocate space to COMMON symbols.
This behavior is presumably to work around legacy projects which inspect
relocatable output by themselves and do not handle COMMON symbols. grub does
not do this.
See https://github.com/llvm/llvm-project/issues/53660
-d
In GNU ld and ld.lld, -d is used with -r to allocate space to COMMON symbols.
This behavior is presumably to work around legacy projects which inspect
relocatable output by themselves and do not handle COMMON symbols. grub does
not do this.
See https://github.com/llvm/llvm-project/issues/53660
-d
Clang does not support -falign-jumps and only recently gained support
for -falign-loops. -falign-jumps=1 should be tested beside
-fliang-loops=1 to avoid passing unrecognized options to Clang:
clang-14: error: optimization flag '-falign-jumps=1' is not supported
[-Werror,-Wignored-optimizatio
Replaces https://lists.gnu.org/archive/html/grub-devel/2021-08/msg00094.html
("[PATCH 0/2] configure: Remove -malign-* and fix Clang 14 breakage")
Changes from v2:
Split -falign-jumps=1 -falign-loops=1 checks
Change a tab to spaces
Fangrui Song (2):
configure: Remove obsoleted -malign-{jump
GCC warns `cc1: warning: ‘-malign-loops’ is obsolete, use ‘-falign-loops’`.
Clang silently ignores -malign-{jumps,loops,functions}.
The preferred -falign-* forms have been supported since GCC 3.2, so just
remove -malign-{jumps,loops,functions}.
Acked-by: Paul Menzel
Reviewed-by: Daniel Kiper
Si
On 2021-08-25, Daniel Kiper wrote:
On Mon, Aug 23, 2021 at 11:18:38PM -0700, Fangrui Song wrote:
Clang does not support -falign-jumps and only recently gained support
for -falign-loops. Test all the alignment options to avoid passing
unrecognized options to Clang:
clang-14: error: optimizat
Clang does not support -falign-jumps and only recently gained support
for -falign-loops. Test all the alignment options to avoid passing
unrecognized options to Clang:
clang-14: error: optimization flag '-falign-jumps=1' is not supported
[-Werror,-Wignored-optimization-argument]
When compile
GCC warns `cc1: warning: ‘-malign-loops’ is obsolete, use ‘-falign-loops’`.
Clang silently ignores -malign-{jumps,loops,functions}.
The preferred -falign-* forms have been supported since GCC 3.2, so just
remove -malign-{jumps,loops,functions}.
Signed-off-by: Fangrui Song
---
configure.ac | 9 -
This replaces
https://lists.gnu.org/archive/html/grub-devel/2021-08/threads.html
("[PATCH v2] configure: Check -falign-jumps=1 -falign-functions=1 beside -")
Fangrui Song (2):
configure: Remove obsoleted -malign-{jumps,loops,functions}
configure: Check -falign-jumps=1 -falign-functions=1 besid
Hi Paul,
Thank you for your suggestions. I just sent v2
https://lists.gnu.org/archive/html/grub-devel/2021-08/msg00091.html
with a further cleanup.
On 2021-08-24, Paul Menzel wrote:
Dear Fangrui,
Am 16.08.21 um 21:06 schrieb Fangrui Song via Grub-devel:
Clang 14.0.0 has implemented -falign
Clang does not support -falign-jumps and only recently gained support
for -falign-loops. Test all the alignment options to avoid passing
unrecognized options to Clang:
clang-14: error: optimization flag '-falign-jumps=1' is not supported
[-Werror,-Wignored-optimization-argument]
When compile
Clang 14.0.0 has implemented -falign-loops=1 but -falign-jumps=1 is
still unsupported. The check should test all flags which may be added
into CFLAGS.
Signed-off-by: Fangrui Song
---
configure.ac | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/configure.ac b/configure.ac
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