On Wed, Jul 25, 2012 at 7:16 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > On Wed, Jul 25, 2012 at 5:37 PM, Dhruv Matani <dhruvbird@xxxxxxxxx> wrote: >> Hello Ian, >> >> On Wed, Jul 25, 2012 at 5:09 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: >> >>> This appears to be a problem with your C library. On your system >>> /usr/include/features.h does #include <bits/predefs.h>, but >>> bits/predefs.h does not exist. There isn't much GCC can do to help >>> there. yes, I'm in ubuntu 12.04. >>> >>> If you look at /usr/include/features.h you may find some other ideas. >> >> It seems that predefs.h does exist, but it resides at: >> /usr/include/i386-linux-gnu/bits/ and not /usr/include/bits/ >> >> Is there some hack that I can do (set some env. vars. maybe) to let >> gcc search that path as well for includes? > > Oh, sorry, you are running a new version of Debian or Ubuntu. They > choose to move header files and libraries around in a way that breaks > all existing GCC release. Please complain to them. > > In the meantime, setting these environment variables may help: > > LIBRARY_PATH=/usr/lib/i386-linux-gnu > C_INCLUDE_PATH=/usr/include/i386-linux-gnu > CPLUS_INCLUDE_PATH=/usr/include/i386-linux-gnu Thanks! This worked. I've come a long way - and since, the stage 2 & 3 comparison is failing for me. Comparing stages 2 and 3 warning: gcc/cc1plus-checksum.o differs warning: gcc/cc1-checksum.o differs Bootstrap comparison failure! gcc/gcc.o differs gcc/plugin.o differs make[2]: *** [compare] Error 1 make[2]: Leaving directory `/home/dhruvbird/projects/gcc-build' make[1]: *** [stage3-bubble] Error 2 make[1]: Leaving directory `/home/dhruvbird/projects/gcc-build' make: *** [all] Error 2 This is the command I am using to build: $> ../gcc/configure --enable-languages=c,c++ --prefix=/opt/gcc-latest --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu; make Is there something wrong with this? Someone on the internet has had success with performing a distclean and running make again, and I am currently trying that: http://www.linuxquestions.org/questions/linux-from-scratch-13/gcc-build-error-bootstrap-comparison-failure-692025/ However, if you know why this could be happening, please do let me know. Regards, -Dhruv.
