GCC 4.4.1-tdm-2 for MinGW (with installer)

[TDragon]

The second TDM-GCC release of GCC 4.4.1 is now available!

NOTICE:
The first TDM-GCC release of GCC 4.4.1 had a bug that caused a major slowdown in nearly any non-trivial program that it compiled. Be sure to upgrade to the new TDM-2 release if you're currently using 4.4.1-tdm-1.

The 4.4 series continues to take a bit longer to bring from vanilla release to TDM release, but in exchange I've fixed nearly all the outstanding bugs in the TDM-GCC tracker. This release re-enables support for large files, correct formatting of long doubles in iostreams, and more. For general changes in the GCC 4.4 series, see http://gcc.gnu.org/gcc-4.4/changes.html.

I tested this release by successfully building wxWidgets (2.8.10), and building and running Code::Blocks (SVN r5848), both without errors!

Binary packages are available for the Ada, C, C++, Fortran, Objective-C, and Objective-C++ languages, as drop-in replacements for the MinGW project's official gcc packages. Additionally, the TDM/MinGW installer will automatically install TDM-GCC and the MinGW compiler suite for you. Full details and download links are at http://www.tdragon.net/recentgcc/ .

Disclaimer:
The TDM-GCC builds are unofficial replacements for the official MinGW releases of GCC binaries. TDM-GCC was previously recommended for experimentation purposes only, but constant use in day-to-day development and a total download count of over 60,000 have proven the TDM-GCC releases to be at least as usable as the most recent official MinGW GCC release. (Please note that this does not mean that there are no bugs; merely that there is a different set of bugs with a similar or lesser average criticality.) Therefore, TDM-GCC is now heartily endorsed for production use in any non-critical environment, with only the following caveats:

• TDM-GCC is not formally affiliated with or endorsed by the MinGW project (although several MinGW team members make use of it)
• No level of support for TDM-GCC is in any way guaranteed (although a best effort is made to fix bugs as they are found or forward them to GCC Bugzilla)

Cheers,
John E. / TDM

[rhf]

The TDM-GCC release of GCC 4.4.1 is now available!

The upgrade using your installer went very smooth; and everything seems to work well so far, including re-compiling Code::Blocks.
Thanks!

EDIT: Oops. This morning things do not look as rosy as they did last night. CB and wxWidgets (2.8.10) all seemed to compile with only minor warnings. But now when I load a project into Code:Blocks, CB goes to ~95% CPU usage and never stops. My Nightly CB version seems to work just fine using TDM 4.4.1, but it appears that I have screwed something up in the compilation process of Code:Blocks itself. Oh well!

EDIT 2: Well shoot. The more I experimented with even my Nightly CB version, the more problems I had. After re-compiling several of my existing projects with 4.4.1, they ran very slowly or not at all. I may have something wrong with my setup; but, after reverting to your TDM-GCC 4.4.0 (and recompiling everything), all seems to work fine.

[TDragon]

Well, I'm not able to reproduce any of those problems. Really, there's only one change between the 4.4.0 r2 release and this one that affects code generation, and that one actually *fixes* floating point formatting by detecting and using the correct math library. I don't see how it could be causing these problems.

In C::B, have you tried systematically disabling plugins to find a specific problem area?

[rhf]

Thanks, John.
It is very weird. I'll experiment with it some more after I get a little work done.

[ollydbg]

Thanks John.
I will download this package and testing building OpenCV library then.

[ollydbg]

Hi, John
Failed running the CB build from GCC 4.4.1.
see this thread:
http://forums.next.codeblocks.org/index.php?topic=11069.msg75526;topicseen#msg75526

Do I need to rebuild the wxWidgets?

[TDragon]

No; apparently there's a bug somewhere in TDM-GCC that needs to be tracked down. Unfortunately, I'm not able to reproduce it yet.

[thomas]

That bug apparently also causes a drastic increase in executable size, roughly 15-20%.

[billyonthemountain]

Has this bug been already reported in the GCC bugzilla system ?
A search with "known to work : 4.4.0" and "known to fail : 4.4.1" didn't give any results...

[stahta01]

Has this bug been already reported in the GCC bugzilla system ?
A search with "known to work : 4.4.0" and "known to fail : 4.4.1" didn't give any results...

I would guess that till TDM (TDragon) finds the cause and submits a patch that there will be no bug report at GCC bugzilla.

Unless the issue happens on an Linux build of GCC 4.4.1; the only one able to work the bug are MinGW GCC developers like TDM.

Tim S.

[billyonthemountain]

Ok hope this will be fixed soon...
Also I noticed that tdm's release isn't configured with --with-ppl and with --with-cloog (cf. gcc -v 's output)... does that mean that the graphite loop optimizations (ie. -floop-interchange, -floop-strip-mine and -floop-block) are not yet available for mingw32 ?

[TDragon]

Obviously you didn't read the documentation on the website or the README (since they both clearly state that Graphite opts are available), or even simply try a test program with them. --with-cloog and --with-ppl are not requisite for the configuration process to find those libraries, merely optional.

[billyonthemountain]

I see...

To use this code transformation, GCC has to be configured with --with-ppl and --with-cloog to enable the Graphite loop transformation infrastructure.

from the gcc-4.4 optimisation page was somewhat misleading...
Thanks for the info...

[ollydbg]

hi ALL, TDM GCC 4.4.1-2 is released.

http://www.tdragon.net/recentgcc/

NOTICE:
The 4.4.1-tdm-2 release is now available. If you were using the first 4.4.1 release, you are urged to upgrade to this new version in order to avoid a bug that caused drastically increased CPU usage in programs compiled with the first version.

[ollydbg]

I just build the CB trunk, and it works with no problem!!! Thanks to John.