[PATCH v2 1/3] scripts/Makefile.lib: add PLATFORM_LIBS to efi linking

[Heinrich Schuchardt]

On 5/8/25 20:30, Adriano Cordova wrote:
> Link .efi applications using libgcc
> 
> Signed-off-by: Adriano Cordova <adriano.cordova at canonical.com>
> ---
> 
> changes in v2:
>      - Address the root of the problem. In v1 I was modifying
>        printx in initrddump.efi not to generate __lshrdi3 instructions,
>        but a better fix is to provide those instructions with libgcc
> 
>   scripts/Makefile.lib | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 83fd5ff6c31..3a86cf375c3 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -497,7 +497,7 @@ KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro
>   KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)
>   quiet_cmd_efi_ld = LD      $@
>   cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -L $(srctree) -T $(EFI_LDS_PATH) \
> -		-shared -Bsymbolic -s $^ -o $@
> +		-shared -Bsymbolic -s $^ $(PLATFORM_LIBS) -o $@
>   
>   EFI_LDS_PATH = arch/$(ARCH)/lib/$(EFI_LDS)
>   

Building with this series fails:

    sandbox:  +   sandbox_noinst
+ld.bfd: cannot find -lrt: No such file or directory
+ld.bfd: cannot find -lSDL2: No such file or directory
+make[3]: *** [scripts/Makefile.lib:512: 
lib/efi_loader/helloworld_efi.so] Error 1
+make[2]: *** [scripts/Makefile.build:398: lib/efi_loader] Error 2
+make[1]: *** [Makefile:1919: lib] Error 2
+make: *** [Makefile:177: sub-make] Error 2

     0    0    1 /1              sandbox_noinst

See https://source.denx.de/u-boot/custodians/u-boot-efi/-/jobs/1131665/raw

Best regards

Heinrich