[Buildroot] [PATCH v4] cmake: don't use any header available in $(HOST_DIR)/usr/include
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Sat Mar 7 10:07:37 UTC 2015
Dear Fabio Porcedda,
On Sat, 7 Mar 2015 09:27:55 +0100, Fabio Porcedda wrote:
> The -I<dir> options added to CMAKE_C_FLAGS are passed to the compiler
> before the -I<dir> options of the cmake internal headers, so when the
> host-xz package was already built, a #include <lzma.h> directive loads
> the host-xz header instead of the cmake internal one.
>
> Because we don't want to use any header avaiable in -I$(HOST_DIR)/usr/include,
> just get rid of the -I<dir> options in the HOST_CFLAGS.
>
> Fix build failure:
> make host-xz host-cmake
>
> .../output/build/host-cmake-3.1.3/Utilities/cmliblzma/liblzma/common/block_buffer_decoder.c:17:1: error: conflicting types for ‘lzma_block_buffer_decode’
> lzma_block_buffer_decode(lzma_block *block, lzma_allocator *allocator,
> ^
> In file included from /home/tetsuya/buildroot/br2/output/host/usr/include/lzma.h:296:0,
> from /home/tetsuya/buildroot/br2/output/build/host-cmake-3.1.3/Utilities/cmliblzma/liblzma/common/common.h:34,
> from /home/tetsuya/buildroot/br2/output/build/host-cmake-3.1.3/Utilities/cmliblzma/liblzma/common/block_decoder.h:16,
> from /home/tetsuya/buildroot/br2/output/build/host-cmake-3.1.3/Utilities/cmliblzma/liblzma/common/block_buffer_decoder.c:13:
> /home/tetsuya/buildroot/br2/output/host/usr/include/lzma/block.h:577:27: note: previous declaration of ‘lzma_block_buffer_decode’ was here
> extern LZMA_API(lzma_ret) lzma_block_buffer_decode(
> ^
> Utilities/cmliblzma/CMakeFiles/cmliblzma.dir/build.make:261: recipe for target 'Utilities/cmliblzma/CMakeFiles/cmliblzma.dir/liblzma/common/block_buffer_decoder.c.o' failed
> make[3]: *** [Utilities/cmliblzma/CMakeFiles/cmliblzma.dir/liblzma/common/block_buffer_decoder.c.o] Error 1
>
> Fixes:
> http://autobuild.buildroot.org/results/4edf6e169dc4a00d8a8bd16a86eba2316cbbd9e5
> http://autobuild.buildroot.org/results/a9ff38b22a36a2f8427d33085d3263a8cbfbd746
> http://autobuild.buildroot.org/results/ecaa0227249207b5450519832a193c1585ac8177
>
> Signed-off-by: Fabio Porcedda <fabio.porcedda at gmail.com>
> Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
> Cc: Baruch Siach <baruch at tkos.co.il>
> Cc: Samuel Martin <s.martin49 at gmail.com>
Thanks, I applied this patch, but I did some further changes:
[Thomas:
- simplify the sed expression. Instead of trying to remove '-I
<something>' from $(HOST_CFLAGS), simply remove $(HOST_CPPFLAGS)
from $(HOST_CFLAGS).
- add the same logic for HOST_CXXFLAGS.]
See the final commit at
http://git.buildroot.net/buildroot/commit/?id=46bf8e8fd2428a733486ca192ba93588a7ac8d0e.
Thanks!
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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