Download the source from from http://sourceforge.net/projects/mspgcc4/files/mspgcc4/mspgcc4-20100815.tar.bz2. Please continue to try the variant msp430-libc that uses Texas Instruments-provided headers: this is the way of the future.
Sorry, no pre-built binaries. I'm still looking for downstream packagers for Ubuntu (especially) and any Windows variants. I've also dropped some of the patch files for older versions of gcc and gdb to reduce maintenance overhead. Most of the changes were to msp430-libc and are listed below. There was one compiler change, due to a bug in gcc itself; that's been filed upstream as http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45235 and the proposed fix from the upstream maintainers applied for mspgcc4 under gcc 4.4.3 and 4.4.4. Report problems here or on the mspgcc4 tracker at http://sourceforge.net/tracker/?group_id=277223&atid=1177287 mspgcc4 is now in maintenance-only mode. Major updates, including support for gcc 4.5.x/4.6.x and integration of new chips, standardization on TI headers, and integrated MSP430X support will be done in the mspgcc project, and are being based directly off the upstream development repositories. The expectation is that the mspgcc4 project will be deprecated once the new capabilities are released under the mspgcc umbrella. Peter 20100815 - e46e0d6 SF 3006833: missing string.h prototypes - 7d17d09 SF 3043392: msp430xG439 does not include compa.h - b7d9fd8 SF 3037713: remove extra underscores from preprocessor symbol 20100815-ti - 5278dc2 Fix C++/header-id modifications for files that use upper-case chip identifiers - 8edaf13 Temporarily unconditionally define macros for CPUX. - 60022af Re-generate derived headers from munge.sed and 53243ef857 - 7bd9f39 Fix 3036130; comment the converter script
