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| author | Sam Ravnborg <sam@mars.ravnborg.org> | 2004-08-22 15:14:22 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@mars.ravnborg.org> | 2004-08-22 15:14:22 +0200 |
| commit | a23a4605c2ad54359f7ea4068e79a54ef3cf3620 (patch) | |
| tree | 5fbc571074d9fc96aeb99e08bd89480001c616ba /Makefile | |
| parent | f9a71d169c02064bf27d6be4993fee555c35c244 (diff) | |
| download | history-a23a4605c2ad54359f7ea4068e79a54ef3cf3620.tar.gz | |
kbuild: Consolidated cc support function
Added three function to top-level Makefile:
cc-option (replacing check_gcc)
cc-option-yn (as cc-option but return y or n)
cc-version (numeric version of $(CC))
Documentation added to Documentation/kbuild/makefiles.txt
The check_gcc version is still present, but now spit out a arning if used.
The new naming where chosen to get consistent naming of all three functions
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/Makefile b/Makefile index 5a13059cd523a3..e2e2cbe44b195e 100644 --- a/Makefile +++ b/Makefile @@ -256,9 +256,32 @@ ifneq ($(findstring s,$(MAKEFLAGS)),) quiet=silent_ endif -check_gcc = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) +export quiet Q KBUILD_VERBOSE + +###### +# cc support functions to be used (only) in arch/$(ARCH)/Makefile +# See documentation in Documentation/kbuild/makefiles.txt + +# cc-option +# Usage: cflags-y += $(call gcc-option, -march=winchip-c6, -march=i586) + +cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ + > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) + +# For backward compatibility +check_gcc = $(warning check_gcc is deprecated - use cc-option) \ + $(call cc-option, $(1),$(2)) + +# cc-option-yn +# Usage: flag := $(call gcc-option-yn, -march=winchip-c6) +cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ + > /dev/null 2>&1; then echo "y"; else echo "n"; fi;) + +# cc-version +# Usage gcc-ver := $(call cc-version $(CC)) +cc-version = $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \ + $(if $(1), $(1), $(CC)) -export quiet Q KBUILD_VERBOSE check_gcc # Look for make include files relative to root of kernel src MAKEFLAGS += --include-dir=$(srctree) @@ -463,7 +486,7 @@ CFLAGS += -g endif # warn about C99 declaration after statement -CFLAGS += $(call check_gcc,-Wdeclaration-after-statement,) +CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) # # INSTALL_PATH specifies where to place the updated kernel and system map |