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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-10-30 22:26:33 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-11-02 22:49:00 +0900 |
| commit | 076f421da5d4594d0a3e60c032ccf02ba55e868a (patch) | |
| tree | f9e534cbf76b4fd8e47ff8690caf132d439f9310 /arch | |
| parent | 2cd3faf87d2d8f6123adf34741b9a7b98828a76f (diff) | |
| download | lwn-076f421da5d4594d0a3e60c032ccf02ba55e868a.tar.gz lwn-076f421da5d4594d0a3e60c032ccf02ba55e868a.zip | |
kbuild: replace cc-name test with CONFIG_CC_IS_CLANG
Evaluating cc-name invokes the compiler every time even when you are
not compiling anything, like 'make help'. This is not efficient.
The compiler type has been already detected in the Kconfig stage.
Use CONFIG_CC_IS_CLANG, instead.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Acked-by: Paul Burton <paul.burton@mips.com> (MIPS)
Acked-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/vdso/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/Makefile | 4 |
3 files changed, 4 insertions, 4 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 15a84cfd0719..68410490e12f 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -128,7 +128,7 @@ cflags-y += -ffreestanding # clang's output will be based upon the build machine. So for clang we simply # unconditionally specify -EB or -EL as appropriate. # -ifeq ($(cc-name),clang) +ifdef CONFIG_CC_IS_CLANG cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL else diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile index 34605ca21498..58a0315ad743 100644 --- a/arch/mips/vdso/Makefile +++ b/arch/mips/vdso/Makefile @@ -10,7 +10,7 @@ ccflags-vdso := \ $(filter -march=%,$(KBUILD_CFLAGS)) \ -D__VDSO__ -ifeq ($(cc-name),clang) +ifdef CONFIG_CC_IS_CLANG ccflags-vdso += $(filter --target=%,$(KBUILD_CFLAGS)) endif diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 17be664dafa2..8a2ce14d68d0 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -96,7 +96,7 @@ aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1) aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2 endif -ifneq ($(cc-name),clang) +ifndef CONFIG_CC_IS_CLANG cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align endif @@ -175,7 +175,7 @@ endif # Work around gcc code-gen bugs with -pg / -fno-omit-frame-pointer in gcc <= 4.8 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44199 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52828 -ifneq ($(cc-name),clang) +ifndef CONFIG_CC_IS_CLANG CC_FLAGS_FTRACE += $(call cc-ifversion, -lt, 0409, -mno-sched-epilog) endif endif |