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Commit 6dcb4e5e authored by Masahiro Yamada's avatar Masahiro Yamada Committed by Michal Marek
Browse files

kbuild: allow cc-ifversion to have the argument for false condition 



The macro "try-run" can have an argument for each of true and false
cases.  Having an argument for the false case of cc-ifversion (and
ld-ifversion) would be useful too.

Signed-off-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
parent 3df80947

Documentation/kbuild/makefiles.txt

+3 −2
Original line number Diff line number Diff line
@@ -531,8 +531,9 @@ more details, with real examples. 
	than or equal to gcc 3.0.



    cc-ifversion

	cc-ifversion tests the version of $(CC) and equals last argument if

	version expression is true.

	cc-ifversion tests the version of $(CC) and equals the fourth parameter

	if version expression is true, or the fifth (if given) if the version

	expression is false.



	Example:

		#fs/reiserfs/Makefile

scripts/Kbuild.include

+2 −2
Original line number Diff line number Diff line
@@ -137,7 +137,7 @@ cc-fullversion = $(shell $(CONFIG_SHELL) \ 


# cc-ifversion

# Usage:  EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)

cc-ifversion = $(shell [ $(cc-version) $(1) $(2) ] && echo $(3))

cc-ifversion = $(shell [ $(cc-version) $(1) $(2) ] && echo $(3) || echo $(4))



# cc-ldoption

# Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)
@@ -160,7 +160,7 @@ ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh) 


# ld-ifversion

# Usage:  $(call ld-ifversion, -ge, 22252, y)

ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3))

ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3) || echo $(4))



######