Boost C++ Libraries: Ticket #5088: Odd definition of main() inside library on AIX

attachment set

hstong@… — Tue, 18 Jan 2011 22:30:40 GMT

attachment → regex.cpp.patch

Patch to libs/regex/src/regex.cpp removing main() from library

anonymous — Wed, 19 Jan 2011 12:23:01 GMT

I was under the impression that IBM's compiler needed a main() in order to build regex as a DLL? Maybe that restriction has been removed? What issues does it's presence cause, and what compiler version are you using?

Thanks, John.

anonymous — Wed, 19 Jan 2011 12:23:40 GMT

Ah wait... is this on AIX with IBM's linker, or on Linux with the system linker?

hstong@… — Wed, 19 Jan 2011 22:06:36 GMT

This is AIX with IBM's linker.

A normal build produces:

ld: 0711-224 WARNING: Duplicate symbol: .main

When using -qextchk (adds XCOFF type-check information):

ld: 0711-197 ERROR: Type mismatches for symbol: .main

The confusion over needing main() in the library sounds like an issue with not setting -bnoentry on the link step. I believe that this was resolved with a fix to vacpp.jam.

milestone changed

John Maddock — Thu, 20 Jan 2011 10:14:03 GMT

milestone To Be Determined → Boost 1.47.0

status changed; resolution set

John Maddock — Thu, 20 Jan 2011 10:15:03 GMT

status new → closed
resolution → fixed

(In [68318]) Building with IBM C++ no longer needs a main() entry point. Fixes #5088.