gcc no longer works after upgrade

Question

As an example:

hsmyers@ubuntu:~/c_dev$ cat hello.c
#include <stdio.h>

int main(int argc,char **argv) {
printf("Hello World!\n");
return 0;
}
hsmyers@ubuntu:~/c_dev$ gcc -c -o hello.o hello.c
In file included from /usr/include/stdio.h:28:0,
             from hello.c:1:
/usr/include/features.h:323:26: fatal error: bits/predefs.h: No such file or directory
compilation terminated.

At a guess somewhere along the way after trying to fix the error message:

/usr/bin/ld: cannot find crt1.o: No such file or directory

I've munged things up completely. Could anyone please advise?

Answer 1

You need to install gcc-multilib package that brings 32bit specific headers to your 64bit operation system.

Answer 2

This works fine for me, on a fresh oneiric install. /usr/include/x86_64-linux-gnu/bits/predefs.h is provided by the libc6-dev package, perhaps that is not installed correctly?

You can "reinstall" that package with:

sudo apt-get install --reinstall libc6-dev

However, if that file is present, then it looks like your compiler's search path isn't looking in the right place for that file. You can check by running the following:

gcc --verbose -o hello hello.c

which should print the search path for include files. Mine says:

    #include <...> search starts here:
     /usr/lib/gcc/x86_64-linux-gnu/4.6.1/include
     /usr/local/include
     /usr/lib/gcc/x86_64-linux-gnu/4.6.1/include-fixed
     /usr/include/x86_64-linux-gnu
     /usr/include

If that's not the same, I'd say there is a version mismatch between some of your build-essential packages. Check that you have the right versions of the gcc, and libc6-dev packages. Right now on oneiric, these should be:

gcc           4:4.6.1-2ubuntu5
libc6-dev     2.13-20ubuntu5 

Answer 3

I had the same problem with my avr-gcc compiler.

I linked the files and folders in /usr/include/i386-linux-gnu/ to a folder in which avr-gcc searches for -files. For Example: /usr/lib/avr/include/

ln -s /usr/include/i386-linux-gnu/* /usr/lib/avr/include/

Maybe something similar works for gcc. To