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Date: Thu, 25 Dec 2014 23:41:02 +0100
From: Helge Deller <deller@....de>
To: linux-kernel@...r.kernel.org
Cc: linux-kbuild@...r.kernel.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH 2/6] kbuild: do not add $(call ...) to invoke cc-version
or cc-fullversion
On 12/25/2014 06:31 AM, Masahiro Yamada wrote:
> The macros cc-version, cc-fullversion and ld-version take no argument.
> It is not necessary to add $(call ...) to invoke them.
>
> Signed-off-by: Masahiro Yamada <yamada.m@...panasonic.com>
> ---
>
> Documentation/kbuild/makefiles.txt | 4 ++--
> arch/parisc/Makefile | 2 +-
For the parisc change:
Acked-by: Helge Deller <deller@....de>
Helge
> arch/powerpc/Makefile | 6 +++---
> arch/x86/Makefile.um | 2 +-
> kernel/gcov/Makefile | 2 +-
> scripts/Kbuild.include | 7 ++-----
> 6 files changed, 10 insertions(+), 13 deletions(-)
>
> diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
> index a311db8..7b3487a 100644
> --- a/Documentation/kbuild/makefiles.txt
> +++ b/Documentation/kbuild/makefiles.txt
> @@ -524,7 +524,7 @@ more details, with real examples.
> Example:
> #arch/x86/Makefile
> cflags-y += $(shell \
> - if [ $(call cc-version) -ge 0300 ] ; then \
> + if [ $(cc-version) -ge 0300 ] ; then \
> echo "-mregparm=3"; fi ;)
>
> In the above example, -mregparm=3 is only used for gcc version greater
> @@ -552,7 +552,7 @@ more details, with real examples.
>
> Example:
> #arch/powerpc/Makefile
> - $(Q)if test "$(call cc-fullversion)" = "040200" ; then \
> + $(Q)if test "$(cc-fullversion)" = "040200" ; then \
> echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
> false ; \
> fi
> diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
> index e9b4b6a..ff5e55f 100644
> --- a/arch/parisc/Makefile
> +++ b/arch/parisc/Makefile
> @@ -149,7 +149,7 @@ endef
> # we require gcc 3.3 or above to compile the kernel
> archprepare: checkbin
> checkbin:
> - @if test "$(call cc-version)" -lt "0303"; then \
> + @if test "$(cc-version)" -lt "0303"; then \
> echo -n "Sorry, GCC v3.3 or above is required to build " ; \
> echo "the kernel." ; \
> false ; \
> diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
> index 132d9c6..fc502e0 100644
> --- a/arch/powerpc/Makefile
> +++ b/arch/powerpc/Makefile
> @@ -314,7 +314,7 @@ TOUT := .tmp_gas_check
> # - Require gcc 4.0 or above on 64-bit
> # - gcc-4.2.0 has issues compiling modules on 64-bit
> checkbin:
> - @if test "$(call cc-version)" = "0304" ; then \
> + @if test "$(cc-version)" = "0304" ; then \
> if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
> echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
> echo 'correctly with gcc-3.4 and your version of binutils.'; \
> @@ -322,13 +322,13 @@ checkbin:
> false; \
> fi ; \
> fi
> - @if test "$(call cc-version)" -lt "0400" \
> + @if test "$(cc-version)" -lt "0400" \
> && test "x${CONFIG_PPC64}" = "xy" ; then \
> echo -n "Sorry, GCC v4.0 or above is required to build " ; \
> echo "the 64-bit powerpc kernel." ; \
> false ; \
> fi
> - @if test "$(call cc-fullversion)" = "040200" \
> + @if test "$(cc-fullversion)" = "040200" \
> && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
> echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
> echo 'kernel with modules enabled.' ; \
> diff --git a/arch/x86/Makefile.um b/arch/x86/Makefile.um
> index 36b62bc..95eba55 100644
> --- a/arch/x86/Makefile.um
> +++ b/arch/x86/Makefile.um
> @@ -30,7 +30,7 @@ cflags-y += -ffreestanding
> # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
> # a lot more stack due to the lack of sharing of stacklots. Also, gcc
> # 4.3.0 needs -funit-at-a-time for extern inline functions.
> -KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
> +KBUILD_CFLAGS += $(shell if [ $(cc-version) -lt 0400 ] ; then \
> echo $(call cc-option,-fno-unit-at-a-time); \
> else echo $(call cc-option,-funit-at-a-time); fi ;)
>
> diff --git a/kernel/gcov/Makefile b/kernel/gcov/Makefile
> index 52aa7e8..6f01fa3 100644
> --- a/kernel/gcov/Makefile
> +++ b/kernel/gcov/Makefile
> @@ -21,7 +21,7 @@ else
> # is not available. We can probably move if-lt to Kbuild.include, so it's also
> # not defined during clean or to include Kbuild.include in
> # scripts/Makefile.clean. But the following workaround seems least invasive.
> - cc-ver := $(if $(call cc-version),$(call cc-version),0)
> + cc-ver := $(if $(cc-version),$(cc-version),0)
> endif
>
> obj-$(CONFIG_GCOV_KERNEL) := base.o fs.o
> diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
> index a972666..69c9f57 100644
> --- a/scripts/Kbuild.include
> +++ b/scripts/Kbuild.include
> @@ -136,17 +136,15 @@ cc-disable-warning = $(call try-run,\
> $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
>
> # cc-version
> -# Usage gcc-ver := $(call cc-version)
> cc-version = $(shell $(KBUILD_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
>
> # cc-fullversion
> -# Usage gcc-ver := $(call cc-fullversion)
> cc-fullversion = $(shell $(KBUILD_SHELL) \
> $(srctree)/scripts/gcc-version.sh -p $(CC))
>
> # cc-ifversion
> # Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
> -cc-ifversion = $(shell [ $(call cc-version) $(1) $(2) ] && echo $(3))
> +cc-ifversion = $(shell [ $(cc-version) $(1) $(2) ] && echo $(3))
>
> # cc-ldoption
> # Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)
> @@ -164,13 +162,12 @@ ld-option = $(call try-run,\
> ar-option = $(call try-run, $(AR) rc$(1) "$$TMP",$(1),$(2))
>
> # ld-version
> -# Usage: $(call ld-version)
> # Note this is mainly for HJ Lu's 3 number binutil versions
> ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh)
>
> # ld-ifversion
> # Usage: $(call ld-ifversion, -ge, 22252, y)
> -ld-ifversion = $(shell [ $(call ld-version) $(1) $(2) ] && echo $(3))
> +ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3))
>
> ######
>
>
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