From b6e229a13aebfbb3fe38c216fd51b68bf71cfa9c Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Fri, 20 Feb 2015 09:40:59 +0000
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Subject: [PATCH] export CPP
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The OE environment sets and exports CPP as being the target gcc. When
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building gcc-cross-canadian for a mingw targetted sdk, the following can be found
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in build.x86_64-pokysdk-mingw32.i586-poky-linux/build-x86_64-linux/libiberty/config.log:
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configure:3641: checking for _FILE_OFFSET_BITS value needed for large files
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configure:3666: gcc -c -isystem/media/build1/poky/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe conftest.c >&5
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configure:3666: $? = 0
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configure:3698: result: no
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configure:3786: checking how to run the C preprocessor
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configure:3856: result: x86_64-pokysdk-mingw32-gcc -E --sysroot=/media/build1/poky/build/tmp/sysroots/x86_64-nativesdk-mingw32-pokysdk-mingw32
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configure:3876: x86_64-pokysdk-mingw32-gcc -E --sysroot=/media/build1/poky/build/tmp/sysroots/x86_64-nativesdk-mingw32-pokysdk-mingw32 conftest.c
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configure:3876: $? = 0
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Note this is a *build* target (in build-x86_64-linux) so it should be
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using the host "gcc", not x86_64-pokysdk-mingw32-gcc. Since the mingw32
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headers are very different, using the wrong cpp is a real problem. It is leaking
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into configure through the CPP variable. Ultimately this leads to build
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failures related to not being able to include a process.h file for pem-unix.c.
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The fix is to ensure we export a sane CPP value into the build
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environment when using build targets. We could define a CPP_FOR_BUILD value which may be
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the version which needs to be upstreamed but for now, this fix is good enough to
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avoid the problem.
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RP 22/08/2013
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Upstream-Status: Pending
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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---
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Makefile.in | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/Makefile.in b/Makefile.in
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index 047be0255e2..af19589fa95 100644
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--- a/Makefile.in
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+++ b/Makefile.in
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@@ -149,6 +149,7 @@ BUILD_EXPORTS = \
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AR="$(AR_FOR_BUILD)"; export AR; \
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AS="$(AS_FOR_BUILD)"; export AS; \
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CC="$(CC_FOR_BUILD)"; export CC; \
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+ CPP="$(CC_FOR_BUILD) -E"; export CPP; \
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CFLAGS="$(CFLAGS_FOR_BUILD)"; export CFLAGS; \
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CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \
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CXX="$(CXX_FOR_BUILD)"; export CXX; \
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