linux-next: build failure after merge of the akpm-current tree

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

powerpc-linux-ld: unrecognized option '--no-dynamic-linker'

Caused by patch

  "powerpc: add purgatory for kexec_file_load implementation"

I have disabled KEXEC_FILE for now:

From: Stephen Rothwell <redacted>
Date: Thu, 24 Nov 2016 15:52:55 +1100
Subject: [PATCH] disable KEXEC_FILE on powerpc for now

Signed-off-by: Stephen Rothwell <redacted>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2d86643f280d..b72c1c7afcf0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig

@@ -475,6 +475,7 @@ config KEXEC_FILE
 	depends on PPC64
 	depends on CRYPTO=y
 	depends on CRYPTO_SHA256=y
+	depends on BROKEN
 	help
 	  This is a new version of the kexec system call. This call is
 	  file based and takes in file descriptors as system call arguments

-- 
2.10.2

-- 
Cheers,
Stephen Rothwell

Hello Stephen,

Am Donnerstag, 24. November 2016, 16:01:51 BRST schrieb Stephen Rothwell:

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

powerpc-linux-ld: unrecognized option '--no-dynamic-linker'

Caused by patch

  "powerpc: add purgatory for kexec_file_load implementation"

Sorry about that. --no-dynamic-linker was added in binutils 2.26.
The patch below fixes the problem.

-- 
Thiago Jung Bauermann
IBM Linux Technology Center

diff --git a/arch/powerpc/purgatory/Makefile b/arch/powerpc/purgatory/Makefile
index 2dfb53ac9944..cf6e78b9af86 100644
--- a/arch/powerpc/purgatory/Makefile
+++ b/arch/powerpc/purgatory/Makefile

@@ -6,8 +6,10 @@ purgatory-y := purgatory.o string.o v2wrap.o purgatory-ppc64.o crtsavres.o \
 targets += $(purgatory-y)
 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
 
-LDFLAGS_purgatory.ro := -pie --no-dynamic-linker -e purgatory_start \
-			--no-undefined -nostartfiles -nostdlib -nodefaultlibs
+LDFLAGS_purgatory.ro := -pie -e purgatory_start --no-undefined -nostartfiles \
+			-nostdlib -nodefaultlibs
+LDFLAGS_purgatory.ro += $(call ld-option, --no-dynamic-linker)
+
 targets += purgatory.ro
 
 KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE), $(KBUILD_CFLAGS))

Hi Thiago,

On Thu, 24 Nov 2016 13:02:39 -0200 Thiago Jung Bauermann [off-list ref] wrote:

Am Donnerstag, 24. November 2016, 16:01:51 BRST schrieb Stephen Rothwell:

quoted

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

powerpc-linux-ld: unrecognized option '--no-dynamic-linker'

Caused by patch

  "powerpc: add purgatory for kexec_file_load implementation"
  

Sorry about that. --no-dynamic-linker was added in binutils 2.26.
The patch below fixes the problem.

OK, I will apply that patch instead of disabling CONFIG_KEXEC_FILE
today.

-- 
Cheers,
Stephen Rothwell