linux-kernel - [PATCH 19/19] arm64: vdso32: Enable Clang Compilation

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Date:   Thu, 13 Feb 2020 16:16:14 +0000
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     linux-arch@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        clang-built-linux@...glegroups.com, x86@...nel.org
Cc:     catalin.marinas@....com, will.deacon@....com, arnd@...db.de,
        linux@...linux.org.uk, paul.burton@...s.com, tglx@...utronix.de,
        luto@...nel.org, mingo@...hat.com, bp@...en8.de, sboyd@...nel.org,
        salyzyn@...roid.com, pcc@...gle.com, 0x7f454c46@...il.com,
        ndesaulniers@...gle.com, avagin@...nvz.org
Subject: [PATCH 19/19] arm64: vdso32: Enable Clang Compilation

Enable Clang Compilation for the vdso32 library.

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
---
 arch/arm64/kernel/vdso32/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 04df57b43cb1..209639101044 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -11,8 +11,10 @@ include $(srctree)/lib/vdso/Makefile
 # Same as cc-*option, but using CC_COMPAT instead of CC
 ifeq ($(CONFIG_CC_IS_CLANG), y)
 CC_COMPAT ?= $(CC)
+LD_COMPAT ?= $(CROSS_COMPILE_COMPAT)gcc
 else
 CC_COMPAT ?= $(CROSS_COMPILE_COMPAT)gcc
+LD_COMPAT ?= $(CC_COMPAT)
 endif
 
 cc32-option = $(call try-run,\
@@ -171,7 +173,7 @@ quiet_cmd_vdsold_and_vdso_check = LD32    $@
       cmd_vdsold_and_vdso_check = $(cmd_vdsold); $(cmd_vdso_check)
 
 quiet_cmd_vdsold = LD32    $@
-      cmd_vdsold = $(CC_COMPAT) -Wp,-MD,$(depfile) $(VDSO_LDFLAGS) \
+      cmd_vdsold = $(LD_COMPAT) -Wp,-MD,$(depfile) $(VDSO_LDFLAGS) \
                    -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) -o $@
 quiet_cmd_vdsocc = CC32    $@
       cmd_vdsocc = $(CC_COMPAT) -Wp,-MD,$(depfile) $(VDSO_CFLAGS) -c -o $@ $<
-- 
2.25.0