Hi David,
I am aware that both clang and gcc align to generic itanium ABI so
ideally there shouldn't be any problem in mixing object code compiled with
these 2 compilers. Thanks for the clear answer, I guess I can take up this
model to migrate to clang..
Regards
Ankit
________________________________________
From: David Blaikie [[email protected]]
Sent: Friday, July 24, 2015 8:49 PM
To: Garg, Ankit
Cc: [email protected]
Subject: Re: [cfe-users] Migrating to clang from GCC
This thread seems to have gone in a strange direction - using clang does not
imply or require using libc++.
To answer your original question: this is essentially fine/correct modulo bugs
and version incompatibilities (the two compilers don't necessarily line up
perfectly with respect to feature, bug, etc implementation at all times)
You can compile parts of your c++ program (including using c++ standard library
types on that interface boundary) with clang and parts with gcc (both using the
same standard library) and they should link and run correctly together.
(If you're curious about the nitty gritty of why this works, its related to a
thing called the ABI, and specifically the itanium ABI)
On Jul 24, 2015 12:40 AM, "Ankit Garg"
<[email protected]<mailto:[email protected]>> wrote:
Hi All,
I am not sure whether its the right forum to ask this question. I am
trying to move to clang compiler from GCC, but our software has tons of
components independently developed provding different static archive libraries.
All these libraries are finally linked into executable. Now rather than
compiling every component with clang from scratch, I was thinking to pick one
component at time to compile with clang and use GCC compiled static archives
for other components to link into executable using clang compiler. Would this
always work ?
So my question is whether GCC compiled object/archives involving C/C++ code
would always be compatible with clang generated object files and can be mixed
together during link step using clang compiler. Would this always work if I
can make sure that our libraries are not using any features of C++11 .
Regards
Ankit
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