New submission from Martin Hundebøll:
When cross building python, the building of extensions is called with
-I/usr/include and -L/usr/lib
This makes some extensions fail to compile due to picking up inline assembly
from host headers (e.g. _socket[1]).
I have fixed this locally by applying the attached patch, but I cannot tell if
that would make other builds fail.
[1] log output:
building '_socket' extension
arm-cortexa9neon-linux-gnueabi-gcc -fPIC -Wno-unused-result -Wsign-compare
-Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
-I/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/stage/machine/usr/lib/libffi-3.2.1/include
-O2 -fexpensive-optimizations -fomit-frame-pointer -frename-registers
-Werror=declaration-after-statement -I./Include -I/usr/include -I. -IInclude
-I/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/stage/cross/bin/../arm-cortexa9neon-linux-gnueabi/sysroot/usr/include
-I/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/src/Python-3.5.1/Include
-I/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/src/Python-3.5.1
-c
/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/src/Python-3.5.1/Modules/socketmodule.c
-o
build/temp.linux-arm-3.5/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/src/Python-3.5.1/Modules/socketmodule.o
In file included from /usr/include/bits/byteswap.h:35:0,
from /usr/include/endian.h:60,
from /usr/include/bits/string2.h:51,
from /usr/include/string.h:635,
from ./Include/Python.h:30,
from
/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/src/Python-3.5.1/Modules/socketmodule.c:95:
/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/src/Python-3.5.1/Modules/socketmodule.c:
In function 'socket_getservbyport':
/usr/include/bits/byteswap-16.h:31:5: error: invalid 'asm': invalid operand for
code 'w'
__asm__ ("rorw $8, %w0" \
^
/usr/include/netinet/in.h:403:21: note: in expansion of macro '__bswap_16'
# define htons(x) __bswap_16 (x)
^
/home/mnhu/projects/pil/oe/tmp/work/machine/arm-cortexa9neon-linux-gnueabi/python-3.5.1/src/Python-3.5.1/Modules/socketmodule.c:4861:24:
note: in expansion of macro 'htons'
sp = getservbyport(htons((short)port), proto);
^
--
components: Cross-Build
files: include-dirs.patch
keywords: patch
messages: 260894
nosy: hundeboll
priority: normal
severity: normal
status: open
title: cross building extensions picks up host headers
type: compile error
versions: Python 2.7, Python 3.5
Added file: http://bugs.python.org/file42032/include-dirs.patch
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