Building sendmsg.so on AIX requires extra define

	schlenk reported
Trac ID	trac#5936
Type	defect
Created	2012-09-03 12:33:46Z

When building the 12.2.0 release with GCC on AIX, the symbols
CMSG_SIZE and CMSG_LEN come up as undefined.

 twisted/python/sendmsg.c: In function 'sendmsg_sendmsg':
 twisted/python/sendmsg.c:243: warning: implicit declaration of function 'CMSG_SPACE'
 twisted/python/sendmsg.c:306: warning: implicit declaration of function 'CMSG_LEN'

Those symbols are only defined when _LINUX_SOURCE_COMPAT is defined on AIX.

Adding -D_LINUX_SOURCE_COMPAT to CFLAGS or in front of the sys/socket.h include fixes it.

Attachments:

• sendmsg.c.aix.patch (475 bytes) - added by schlenk on 2012-09-03 12:44:38Z - Patch to add _LINUX_SOURCE_COMPAT

trac-id__5936 5936
type__defect defect
reporter__schlenk schlenk
priority__lowest lowest
milestone__ 
branch__ 
branch_author__ 
status__new new
resolution__None None
component__core core
keywords__aix aix
time__1346675626000000 1346675626000000
changetime__1355741539000000 1355741539000000
version__None None
owner__schlenk schlenk

Start with twisted/python/sendmsg.c and inspect the sys/socket.h include and the sendmsg_sendmsg references to CMSG_SPACE and CMSG_LEN. Build the sendmsg extension with GCC on AIX and confirm those symbols are declared without compiler warnings.