Gabriel Sechan wrote:
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Date: Tue, 25 Mar 2008 10:22:14 -0700
From: [EMAIL PROTECTED]
To: [email protected]
Subject: Re: Compiling C++ to C
Gabriel Sechan wrote:
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Date: Mon, 24 Mar 2008 16:05:45 -0700
From: [EMAIL PROTECTED]
To: [email protected]
Subject: Re: Compiling C++ to C
Gabriel Sechan wrote:
I have to port a C++ program to a new platform, using a specific version of a
compiler (I guess technically I only have to be ABI compatible with said
compiler). Said compiler is for an embedded platform, and cannot be updated to
a modern version because our partner has no plans to migrate. Needless to say,
troubles arose. This ancient version does not support templates. We use
templates. Removing the templates would be painful- very painful. So we're
considering cross-compiling to C. Has anyone done this? Any pointers? Anyone
with any knowledge of the Comeau compiler?
Gabe
What about cfront?
Looking at wikipedia, cfront seems to be abandoned (as of a failed version 4.0). I can't find anyone actively offering it for sale or support. This is a work project, not home, so I'm not looking to cheap out. I might try downloading an old version, but I'd rather pay for something that's active than screw around with abandoned code for weeks.
You seriously can't use a modern gcc cross compiler to achieve ABI
compatibility?
Well, the Comeau compiler is actually a front end compiler that uses an
"ordinary" compiler as its backend. It's quite cheap and it has the
advantage of being more C++ standards compliant than anything else out
there, which is nice. It also has a mode where it will instantiate
template entities. So, perhaps that will suite your needs:
http://www.comeaucomputing.com/
Nope. Our software is going to be compiled into a partner's proprietary top
secret RTOS, so it needs ABI compatibility with a multiple version old ARM
compiler from a specific vendor (because of course neither of us trusts the
other with code, so we're handing them off a binary). Yes, this sucks, but
getting our partner to upgrade his compiler to something modern (where we
already compile) is not an option.
There might well be some option of gcc that will get us the right ABI- I'm not
a build expert. The problem is we don't have the ability to check, other than
calling up our partner, sending a build, and seeing if it barfs. They'd have a
limited patience for that. Rewriting our code to not use templates might be a
preferred option to it.
Although I'm definitely open to other ideas, this is the best one anyone over
here can come up with.
Yeah, so then the Comeau compiler is probably what you want. You might
need to pay them some extra $$'s to get their stuff to work with your
proprietary back-end, but I'm guessing there is a high probability it
will just work, or work with very minor bugs.
--Chris
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