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cxl: use -Werror only with CONFIG_PPC_WERROR

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Some developers really like to have -Werror enabled for their code, as
it helps to ensure warning free code. Others don't want -Werror, as it
(for example) can cause problems when newer (or older) compilers have
different sets of warnings, or new warnings can appear just when turning
up the warning level (e.g., make W=1 or W=2). Thus, it seems prudent to
have the use of -Werror be configurable.

It so happens that cxl is only built on PowerPC, and PowerPC already
has a nice set of Kconfig options for this, under CONFIG_PPC_WERROR. So
let's use that, and the world is a happy place again! (Note that
PPC_WERROR defaults to =y, so the common case compile should still be
enforcing -Werror.)

Fixes: d3d73f4b38 ("cxl: Compile with -Werror")
Signed-off-by: Brian Norris <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
This commit is contained in:
Brian Norris 2016-01-08 10:30:10 -08:00 • committed by Michael Ellerman
commit 57f7c39325
1 changed files with 2 additions and 1 deletions
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3
drivers/misc/cxl/Makefile
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@ -1,4 +1,5 @@
ccflags-y := -Werror $(call cc-disable-warning, unused-const-variable)
ccflags-y := $(call cc-disable-warning, unused-const-variable)
ccflags-$(CONFIG_PPC_WERROR) += -Werror
cxl-y += main.o file.o irq.o fault.o native.o
cxl-y += context.o sysfs.o debugfs.o pci.o trace.o