From: Arnd Bergmann <arnd@xxxxxxxx>
Building powerpc64le kernels with the kernel.org crosstool toolchains
no longer works as the linker attempts to build a big-endian vdso:
powerpc-linux/lib/gcc/powerpc-linux/12.3.0/../../../../powerpc-linux/bin/ld: arch/powerpc/kernel/vdso/sigtramp32-32.o: compiled for a little endian system and target is big endian
powerpc-linux/lib/gcc/powerpc-linux/12.3.0/../../../../powerpc-linux/bin/ld: failed to merge target specific data of file arch/powerpc/kernel/vdso/sigtramp32-32.o
Apparently creating the vdso.lds files from the lds.S files fails to
pass the -mlittle-endian argument here, so the output format gets set
wrong. Changing the conditional to check for CONFIG_CPU_LITTLE_ENDIAN
instead still works, as the kernel configuration definitions are visible.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
I'm fairly sure this worked in the past, but I did not try to bisect the
issue.
---
arch/powerpc/kernel/vdso/vdso32.lds.S | 2 +-
arch/powerpc/kernel/vdso/vdso64.lds.S | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/vdso/vdso32.lds.S b/arch/powerpc/kernel/vdso/vdso32.lds.S
index 426e1ccc6971..5845ea2d1cba 100644
--- a/arch/powerpc/kernel/vdso/vdso32.lds.S
+++ b/arch/powerpc/kernel/vdso/vdso32.lds.S
@@ -7,7 +7,7 @@
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
-#ifdef __LITTLE_ENDIAN__
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
OUTPUT_FORMAT("elf32-powerpcle", "elf32-powerpcle", "elf32-powerpcle")
#else
OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
diff --git a/arch/powerpc/kernel/vdso/vdso64.lds.S b/arch/powerpc/kernel/vdso/vdso64.lds.S
index bda6c8cdd459..82c418b18cce 100644
--- a/arch/powerpc/kernel/vdso/vdso64.lds.S
+++ b/arch/powerpc/kernel/vdso/vdso64.lds.S
@@ -7,7 +7,7 @@
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
-#ifdef __LITTLE_ENDIAN__
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
OUTPUT_FORMAT("elf64-powerpcle", "elf64-powerpcle", "elf64-powerpcle")
#else
OUTPUT_FORMAT("elf64-powerpc", "elf64-powerpc", "elf64-powerpc")
--
2.39.2
