kbuild: add --hash-style= and --build-id unconditionally

As commit 1e022137 ("mips: vdso: drop unnecessary cc-ldoption")
explained, these flags are supported by the minimal required version
of binutils. They are supported by ld.lld too.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>

Makefile

@@ -900,10 +900,8 @@ KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
 KBUILD_AFLAGS   += $(ARCH_AFLAGS)   $(KAFLAGS)
 KBUILD_CFLAGS   += $(ARCH_CFLAGS)   $(KCFLAGS)
 
-# Use --build-id when available.
-LDFLAGS_BUILD_ID := $(call ld-option, --build-id)
-KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
-LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
+KBUILD_LDFLAGS_MODULE += --build-id
+LDFLAGS_vmlinux += --build-id
 
 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
 LDFLAGS_vmlinux	+= $(call ld-option, -X,)

arch/arm/vdso/Makefile

@@ -13,8 +13,7 @@ ccflags-y += -DDISABLE_BRANCH_PROFILING
 ldflags-$(CONFIG_CPU_ENDIAN_BE8) := --be8
 ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
 	    -z max-page-size=4096 -nostdlib -shared $(ldflags-y) \
-	    $(call ld-option, --hash-style=sysv) \
-	    $(call ld-option, --build-id) \
+	    --hash-style=sysv --build-id \
 	    -T
 
 obj-$(CONFIG_VDSO) += vdso.o

arch/arm64/kernel/vdso32/Makefile

@@ -96,8 +96,8 @@ VDSO_LDFLAGS := $(VDSO_CPPFLAGS)
 VDSO_LDFLAGS += -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1
 VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
 VDSO_LDFLAGS += -nostdlib -shared -mfloat-abi=soft
-VDSO_LDFLAGS += $(call cc32-ldoption,-Wl$(comma)--hash-style=sysv)
-VDSO_LDFLAGS += $(call cc32-ldoption,-Wl$(comma)--build-id)
+VDSO_LDFLAGS += -Wl,--hash-style=sysv
+VDSO_LDFLAGS += -Wl,--build-id
 VDSO_LDFLAGS += $(call cc32-ldoption,-fuse-ld=bfd)
 
 

arch/sparc/vdso/Makefile

@@ -115,8 +115,7 @@ quiet_cmd_vdso = VDSO    $@
 		       -T $(filter %.lds,$^) $(filter %.o,$^) && \
 		sh $(srctree)/$(src)/checkundef.sh '$(OBJDUMP)' '$@'
 
-VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \
-	$(call ld-option, --build-id) -Bsymbolic
+VDSO_LDFLAGS = -shared --hash-style=both --build-id -Bsymbolic
 GCOV_PROFILE := n
 
 #

arch/x86/entry/vdso/Makefile

@@ -176,9 +176,8 @@ quiet_cmd_vdso = VDSO    $@
 		       -T $(filter %.lds,$^) $(filter %.o,$^) && \
 		 sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
 
-VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \
-	$(call ld-option, --build-id) $(call ld-option, --eh-frame-hdr) \
-	-Bsymbolic
+VDSO_LDFLAGS = -shared --hash-style=both --build-id \
+	$(call ld-option, --eh-frame-hdr) -Bsymbolic
 GCOV_PROFILE := n
 
 quiet_cmd_vdso_and_check = VDSO    $@