Messages in this thread | | | Subject | Re: Build failure: -Wno-unused-const-variable DNE on old GCC | From | Joe Perches <> | Date | Thu, 07 Jan 2016 11:37:24 -0800 |
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On Thu, 2016-01-07 at 10:54 -0800, Brian Norris wrote: > Hi, > > I'm using a GCC 4.6.3 compiler for some compile tests, and I noticed > that commit 2cd55c68c0a4 ("cxl: Fix build failure due to -Wunused-variable > behaviour change") breaks my builds, because the > -Wno-unused-const-variable doesn't exist on GCC 4.6.3. > > drivers/misc/cxl/base.c: At top level: > cc1: error: unrecognized command line option "-Wno-unused-const-variable" [-Werror] > > Any thoughts on how to best fix this? I'd like not to have to scrounge > up a new cross compiler just for build tests.
drivers/misc/cxl/Makefile:ccflags-y := -Werror -Wno-unused-const-variable
You could take that -Wno-unused-const-variable out of the Makefile or maybe add something like:
$(call cc-ifversion, -ge, 0530, -Wno-unused-const-variable)
or whatever gcc version actually added that unused-const-variable check
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