procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

arm: libgcc: make -spec=sync-*.specs compatible with LTO [PR118642]

Browse source 
The arm-none-eabi port provides some alternative implementations of
__sync_synchronize for different implementations of the architecture.
These can be selected using one of -specs=sync-{none,dmb,cp15dmb}.specs.

These specs fragments fail, however, when LTO is used because they
unconditionally add a --defsym=__sync_synchronize=<implementation> to
the linker arguments and that fails if libgcc is not added to the list
of libraries.

Fix this by only adding the defsym if libgcc will be passed to the
linker.

libgcc/

	PR target/118642
	* config/arm/sync-none.specs (link): Only add the defsym if
	libgcc will be used.
	* config/arm/sync-dmb.specs: Likewise.
	* config/arm/sync-cp15dmb.specs: Likewise.
This commit is contained in:
Richard Earnshaw 2025-01-28 16:14:35 +00:00
parent 54bdeca3c6
commit 0204dcf930
3 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
libgcc/config/arm/sync-cp15dmb.specs
View file

@ -1,4 +1,4 @@
%rename link sync_sync_link
*link:
--defsym=__sync_synchronize=__sync_synchronize_cp15dmb %(sync_sync_link)
%{!nostdlib|lgcc: --defsym=__sync_synchronize=__sync_synchronize_cp15dmb} %(sync_sync_link)

2
libgcc/config/arm/sync-dmb.specs
View file

@ -1,4 +1,4 @@
%rename link sync_sync_link
*link:
--defsym=__sync_synchronize=__sync_synchronize_dmb %(sync_sync_link)
%{!nostdlib|lgcc: --defsym=__sync_synchronize=__sync_synchronize_dmb} %(sync_sync_link)

2
libgcc/config/arm/sync-none.specs
View file

@ -1,4 +1,4 @@
%rename link sync_sync_link
*link:
--defsym=__sync_synchronize=__sync_synchronize_none %(sync_sync_link)
%{!nostdlib|lgcc: --defsym=__sync_synchronize=__sync_synchronize_none} %(sync_sync_link)