I am experiencing some strange behaviour dependent on the tools I use and I was wondering if anyone on this list, has experienced similar problems or may know the answer to my problem. To date I have been using the following tools from the SGI site to successfully compile and boot a 2.4.12 little endian mips kernel : binutils-mipsel-linux-2.8.1-2.i386.rpm egcs-mipsel-linux-1.1.2-4.i386.rpm As an experiment I decided to try the "toolchain-20011020" tools also from the SGI site to compile the exact same kernel, but the compile fails with the following 2 errors : ctfb.c:1158: warning: duplicate `const' {standard input}:11123: Error: expression too complex {standard input}:11123: Fatal Error: internal Error, line 1980, ../../tools-20011020/gas/config/tc-mips.c make[3]: ***[ctfb.o] Error 2 int-handler.s:59: Error: missing ')' int-handler.s:59: Error: illegal operands `lui' int-handler.s:60: Error: missing ')' int-handler.s:60: Error: illegal operands `sb' make[1]: *** [ int-handler.o ] Error 1 I can get around the first error by just disabling CONFIG_FB_CT in the config and recompiling. Note the monta vista toolchain also fails in the same file, with I think the same error. I can get around the second error by one of two methods : a, just comment it out because all it's doing is lighting up an led according to the interrupt received b, by changing a parenthesised define to non-parenthesised form : int-handler.S <l59> lui t1, %hi(TSDB_LED_ADDR) <l60> sb t0, %lo(TSDB_LDE_ADDR)(t1) Failed define : #define TSDB_LED_ADDR (KSEG1 + TSDB_LB_PCU_APERTURE + 0x05100020) Compilable define : #define TSDB_LED_ADDR KSEG1 + TSDB_LB_PCU_APERTURE + 0x05100020 So with the above 2 kludges I can get the kernel to compile, but now when I come to boot it, the board it just locks failing somewhere in console_init ( currently investigating ). Anyone else seen anything like this and know of a solution to the problem ? Or to paraphrase Dominic Sweetman, maybe i should just stay with the "pick your own version folklore" method of picking tools :). Thx