diff mbox series

[v2] pc-bios/optionrom: Fix pvh.img ld build failure on fedora rawhide

Message ID 9c6c64ba1cb113176e755348cf207cb3130fe82b.1706808745.git.crobinso@redhat.com
State New
Headers show
Series [v2] pc-bios/optionrom: Fix pvh.img ld build failure on fedora rawhide | expand

Commit Message

Cole Robinson Feb. 1, 2024, 7:36 p.m. UTC
binutils 2.39 shows some warnings when building pvh.img

/usr/bin/ld: warning: pvh.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/usr/bin/ld: warning: pvh.img has a LOAD segment with RWX permissions

The latter of which is fatal on Fedora rawhide for some reason.

This adds linker options to suppress the errors, if ld supports
the new options.

Signed-off-by: Cole Robinson <crobinso@redhat.com>
---
v2:
    - Check if ld supports the options, they are fairly new.
      Uses the same `ld -v $CHECKOPT` pattern as kernel.git uses
      Stuffs the overrides in `config-ld.mak` similar to `config-cc.mak`
      pattern

 pc-bios/optionrom/Makefile | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

Comments

Cole Robinson April 6, 2024, 6:34 p.m. UTC | #1
It doesn't appear this patch is neccessary to build on fedora rawhide
anymore, qemu 9.0.0-rc2 is building fine there

Thanks,
Cole

On 2/1/24 2:36 PM, Cole Robinson wrote:
> binutils 2.39 shows some warnings when building pvh.img
> 
> /usr/bin/ld: warning: pvh.o: missing .note.GNU-stack section implies executable stack
> /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> /usr/bin/ld: warning: pvh.img has a LOAD segment with RWX permissions
> 
> The latter of which is fatal on Fedora rawhide for some reason.
> 
> This adds linker options to suppress the errors, if ld supports
> the new options.
> 
> Signed-off-by: Cole Robinson <crobinso@redhat.com>
> ---
> v2:
>     - Check if ld supports the options, they are fairly new.
>       Uses the same `ld -v $CHECKOPT` pattern as kernel.git uses
>       Stuffs the overrides in `config-ld.mak` similar to `config-cc.mak`
>       pattern
> 
>  pc-bios/optionrom/Makefile | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile
> index 30d07026c7..87cfc484c7 100644
> --- a/pc-bios/optionrom/Makefile
> +++ b/pc-bios/optionrom/Makefile
> @@ -38,6 +38,16 @@ config-cc.mak: Makefile
>  
>  override LDFLAGS = -nostdlib -Wl,--build-id=none,-T,$(SRC_DIR)/flat.lds
>  
> +ld-test = $(LD) -v $1 >/dev/null 2>/dev/null
> +ld-option = if $(call ld-test, $1); then \
> +    echo "$(TARGET_PREFIX)$1 detected" && echo "override LDFLAGS += -Wl,$1" >&3; else \
> +    echo "$(TARGET_PREFIX)$1 not detected" $(if $2,&& echo "override LDFLAGS += $2" >&3); fi
> +
> +config-ld.mak: Makefile
> +	$(quiet-@)($(call ld-option,--no-warn-rwx-segments); \
> +	    $(call ld-option,--no-warn-execstack)) 3> config-ld.mak
> +-include config-ld.mak
> +
>  pvh.img: pvh.o pvh_main.o
>  
>  %.o: %.S
> @@ -61,7 +71,7 @@ clean:
>  	rm -f *.o *.d *.raw *.img *.bin *~
>  
>  distclean:
> -	rm -f config-cc.mak
> +	rm -f config-cc.mak config-ld.mak
>  
>  # suppress auto-removal of intermediate files
>  .SECONDARY:

- Cole
diff mbox series

Patch

diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile
index 30d07026c7..87cfc484c7 100644
--- a/pc-bios/optionrom/Makefile
+++ b/pc-bios/optionrom/Makefile
@@ -38,6 +38,16 @@  config-cc.mak: Makefile
 
 override LDFLAGS = -nostdlib -Wl,--build-id=none,-T,$(SRC_DIR)/flat.lds
 
+ld-test = $(LD) -v $1 >/dev/null 2>/dev/null
+ld-option = if $(call ld-test, $1); then \
+    echo "$(TARGET_PREFIX)$1 detected" && echo "override LDFLAGS += -Wl,$1" >&3; else \
+    echo "$(TARGET_PREFIX)$1 not detected" $(if $2,&& echo "override LDFLAGS += $2" >&3); fi
+
+config-ld.mak: Makefile
+	$(quiet-@)($(call ld-option,--no-warn-rwx-segments); \
+	    $(call ld-option,--no-warn-execstack)) 3> config-ld.mak
+-include config-ld.mak
+
 pvh.img: pvh.o pvh_main.o
 
 %.o: %.S
@@ -61,7 +71,7 @@  clean:
 	rm -f *.o *.d *.raw *.img *.bin *~
 
 distclean:
-	rm -f config-cc.mak
+	rm -f config-cc.mak config-ld.mak
 
 # suppress auto-removal of intermediate files
 .SECONDARY: