Trouble building latest svn head

[Ian Lance Taylor]

On Wed, Jul 25, 2012 at 5:06 PM, Dhruv Matani <dhruvbird@gmail.com> wrote:
> Command used to build gcc: ../gcc/configure --enable-languages=c,c++
> --prefix=/opt/gcc-latest; make
>
> I get the following error:
>
> make[4]: Leaving directory
> `/home/dhruvbird/projects/gcc-build/i686-pc-linux-gnu/libgcc'
> DEFINES='' HEADERS='../../../gcc/libgcc/config/i386/value-unwind.h' \
>                 ../../../gcc/libgcc/mkheader.sh > tmp-libgcc_tm.h
> /bin/bash ../../../gcc/libgcc/../move-if-change tmp-libgcc_tm.h libgcc_tm.h
> echo timestamp > libgcc_tm.stamp
> /home/dhruvbird/projects/gcc-build/./gcc/xgcc
> -B/home/dhruvbird/projects/gcc-build/./gcc/
> -B/opt/gcc-latest/i686-pc-linux-gnu/bin/
> -B/opt/gcc-latest/i686-pc-linux-gnu/lib/ -isystem
> /opt/gcc-latest/i686-pc-linux-gnu/include -isystem
> /opt/gcc-latest/i686-pc-linux-gnu/sys-include    -g -O2 -O2  -g -O2
> -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
> -Wmissing-prototypes -Wold-style-definition  -isystem ./include
> -fpic -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector   -fpic
> -I. -I. -I../.././gcc -I../../../gcc/libgcc -I../../../gcc/libgcc/.
> -I../../../gcc/libgcc/../gcc -I../../../gcc/libgcc/../include
> -I../../../gcc/libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT
> -DHAVE_CC_TLS  -DUSE_TLS -o _muldi3.o -MT _muldi3.o -MD -MP -MF
> _muldi3.dep -DL_muldi3 -c ../../../gcc/libgcc/libgcc2.c
> -fvisibility=hidden -DHIDE_EXPORTS
> In file included from /usr/include/stdio.h:28:0,
>                  from ../../../gcc/libgcc/../gcc/tsystem.h:88,
>                  from ../../../gcc/libgcc/libgcc2.c:29:
> /usr/include/features.h:324:26: fatal error: bits/predefs.h: No such
> file or directory
>  #include <bits/predefs.h>
>                           ^
> compilation terminated.
> make[3]: *** [_muldi3.o] Error 1
> make[3]: Leaving directory
> `/home/dhruvbird/projects/gcc-build/i686-pc-linux-gnu/libgcc'
> make[2]: *** [all-stage1-target-libgcc] Error 2
> make[2]: Leaving directory `/home/dhruvbird/projects/gcc-build'
> make[1]: *** [stage1-bubble] Error 2
> make[1]: Leaving directory `/home/dhruvbird/projects/gcc-build'
> make: *** [all] Error 2
>
> Any idea how I can fix this?

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.

If you look at /usr/include/features.h you may find some other ideas.

Ian