ctypes not building under OS X 10.6 with LLVM/Clang 2.8

[brettcannon]

BPO	10238
Nosy	@brettcannon, @theller, @birkenfeld, @jcea, @pitrou

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/theller'
closed_at = <Date 2011-01-20.22:39:19.886>
created_at = <Date 2010-10-29.22:27:48.633>
labels = ['build']
title = 'ctypes not building under OS X 10.6 with LLVM/Clang 2.8'
updated_at = <Date 2011-01-21.00:05:38.021>
user = 'https://github.com/brettcannon'

bugs.python.org fields:

activity = <Date 2011-01-21.00:05:38.021>
actor = 'brett.cannon'
assignee = 'theller'
closed = True
closed_date = <Date 2011-01-20.22:39:19.886>
closer = 'brett.cannon'
components = ['Build']
creation = <Date 2010-10-29.22:27:48.633>
creator = 'brett.cannon'
dependencies = []
files = []
hgrepos = []
issue_num = 10238
keywords = []
message_count = 7.0
messages = ['119945', '120001', '120004', '125231', '126650', '126658', '126667']
nosy_count = 6.0
nosy_names = ['brett.cannon', 'theller', 'georg.brandl', 'jcea', 'pitrou', 'jyasskin']
pr_nums = []
priority = 'critical'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue10238'
versions = ['Python 3.1', 'Python 2.7', 'Python 3.2']

[brettcannon]

I get the following output related to the build failure:

/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:153:2: error: unrecognized instruction
cmovnz %rax, %rdx
^
/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:154:2: error: unrecognized instruction
cmovnz %r10, %rax
^
/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:156:2: error: unrecognized instruction
cmovnz %r10, %rdx
^
/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:158:2: error: unrecognized instruction
cmovnz %r10, %rax
^
/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:159:2: error: unrecognized instruction
cmovnz %r11, %rdx
^
/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:166:2: error: unrecognized instruction
rep movsb
^
/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:281:2: error: unrecognized instruction
cmovnz %rdx, %rcx
^
/var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/cc-MxvLE7.s:285:2: error: unrecognized instruction
cmovnz %rdx, %rax
^

[pitrou]

Not sure this is a blocker. There are various assembler syntaxes for x86 and chances are LLVM uses a different one from gcc.

[birkenfeld]

I agree, this shouldn't be a blocker.

[brettcannon]

This is still failing. I also just confirmed it is also happening for 3.1 and 2.7.

[brettcannon]

Filed a bug with LLVM/Clang: http://llvm.org/bugs/show_bug.cgi?id=9014

[brettcannon]

Chris Lattner from LLVM says that this has been fixed in their mainline and that to work around it in LLVM 2.8 one should build with the -no-integrated-as flag.

[brettcannon]

I have verified that if you add -no-integrated-as as a flag (e.g., through CFLAGS) then ctypes will build.