linux-kernel - [PATCH] Makefile: do not override LC

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Date:	Fri,  8 Jan 2010 13:16:28 +0100
From:	Michal Marek <mmarek@...e.cz>
To:	"H. Peter Anvin" <hpa@...or.com>, Simon Horman <horms@...ge.net.au>
Cc:	Masami Hiramatsu <mhiramat@...hat.com>,
	Roland Dreier <rdreier@...co.com>,
	Sam Ravnborg <sam@...nborg.org>,
	Sergei Trofimovich <slyfox@...ox.ru>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-sh@...r.kernel.org
Subject: [PATCH] Makefile: do not override LC_CTYPE

Setting LC_CTYPE=C breaks localized messages in some setups. With only
LC_COLLATE=C and LC_NUMERIC=C, we get almost all we need, except for not
so defined character classes and tolower()/toupper(). The former is not
a big issue, because we can assume that e.g. [:alpha:] will always
include a-zA-Z and we only ever process ASCII input. The latter seems
only affect arch/sh/tools/gen-mach-types, which we can handle separately.

So after this patch the meaning of ranges like [a-z], the behavior of
sort and join, etc. should be the same everywhere and at the same time
gcc should be able to print localized waring and error messages.
LC_NUMERIC=C might not be necessary, but setting it doesn't hurt.

Reported-by: Simon Horman <horms@...ge.net.au>
Reported-by: Sergei Trofimovich <slyfox@...ox.ru>
Signed-off-by: Michal Marek <mmarek@...e.cz>
---

Note: if this still breaks for someone, we will simply set LC_ALL=C.

 Makefile               |    3 +--
 arch/sh/tools/Makefile |    2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 09a320f..a7b4351 100644
--- a/Makefile
+++ b/Makefile
@@ -18,10 +18,9 @@ MAKEFLAGS += -rR --no-print-directory
 
 # Avoid funny character set dependencies
 unexport LC_ALL
-LC_CTYPE=C
 LC_COLLATE=C
 LC_NUMERIC=C
-export LC_CTYPE LC_COLLATE LC_NUMERIC
+export LC_COLLATE LC_NUMERIC
 
 # We are using a recursive build, so we need to do a little thinking
 # to get the ordering right.
diff --git a/arch/sh/tools/Makefile b/arch/sh/tools/Makefile
index 558a56b..2082af1 100644
--- a/arch/sh/tools/Makefile
+++ b/arch/sh/tools/Makefile
@@ -13,4 +13,4 @@
 include/generated/machtypes.h: $(src)/gen-mach-types $(src)/mach-types
 	@echo '  Generating $@'
 	$(Q)mkdir -p $(dir $@)
-	$(Q)$(AWK) -f $^ > $@ || { rm -f $@; /bin/false; }
+	$(Q)LC_ALL=C $(AWK) -f $^ > $@ || { rm -f $@; /bin/false; }
-- 
1.6.5.3

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