linux - Error compiling gcc on Raspberry Pi

So, after solving the problems I had before (previous question here), I'm having some other trouble compiling gcc 2.95.3 on my Raspberry.

This is what I get with the

make bootstrap

command.

../../gcc-2.95.3/gcc/config/arm/arm.c: In function ‘arm_override_options’:
../../gcc-2.95.3/gcc/config/arm/arm.c:286:20: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]
../../gcc-2.95.3/gcc/config/arm/arm.c:530:17: error: lvalue required as left operand of assignment
make[2]: *** [arm.o] Error 1
make[2]: Leaving directory `/home/pi/Desktop/gcc2/gcc-2-build/gcc'
make[1]: *** [bootstrap] Error 2
make[1]: Leaving directory `/home/pi/Desktop/gcc2/gcc-2-build/gcc'
make: *** [bootstrap] Error 2

Can anyone help me? How can I make it compile?

UPDATE

After changing that variable name, I'm getting these errors:

In file included from /usr/include/stdlib.h:25,
                 from ../../gcc-2.95.3/gcc/libgcc2.c:41:
/usr/include/features.h:323: bits/predefs.h: No such file or directory
/usr/include/features.h:356: sys/cdefs.h: No such file or directory
/usr/include/features.h:388: gnu/stubs.h: No such file or directory
In file included from ../../gcc-2.95.3/gcc/libgcc2.c:41:
/usr/include/stdlib.h:42: bits/waitflags.h: No such file or directory
/usr/include/stdlib.h:43: bits/waitstatus.h: No such file or directory
/usr/include/stdlib.h:320: sys/types.h: No such file or directory
In file included from ../../gcc-2.95.3/gcc/libgcc2.c:42:
/usr/include/unistd.h:203: bits/posix_opt.h: No such file or directory
/usr/include/unistd.h:207: bits/environments.h: No such file or directory
/usr/include/unistd.h:218: bits/types.h: No such file or directory
In file included from ../../gcc-2.95.3/gcc/libgcc2.c:42:
/usr/include/unistd.h:606: bits/confname.h: No such file or directory
make[4]: *** [libgcc2.a] Error 1
make[4]: Leaving directory `/home/pi/Desktop/gcc2/gcc-2-build/gcc'
make[3]: *** [stmp-multilib-sub] Error 2
make[3]: Leaving directory `/home/pi/Desktop/gcc2/gcc-2-build/gcc'
make[2]: *** [stmp-multilib] Error 1
make[2]: Leaving directory `/home/pi/Desktop/gcc2/gcc-2-build/gcc'
make[1]: *** [bootstrap] Error 2
make[1]: Leaving directory `/home/pi/Desktop/gcc2/gcc-2-build/gcc'
make: *** [bootstrap] Error 2

Luckily for you, this is an old problem. I too had it, and solved it by looking it up with Google.

In the file arm.c (/gcc/config/arm), line 530 as per the error message above, correct the line as follows:

  arm_prgmode = TARGET_APCS_32 ? PROG_MODE_PROG32 : PROG_MODE_PROG26;

I have no idea how this silly mistake percolated into the code, and how it evaded detection. But alas, there it is.

EDIT:

The second error is not very specific, might be due to many factors. For instance, is your PATH variable empty?

  echo $PATH

If it echoes something like

  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

then you are Ok, otherwise

  export PATH= /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

will solve the problem.

Or you may need to install/re-install the libc6-dev libraries. In this case,

  sudo apt-get purge libc6-dev
  sudo apt-get install libc6-dev

Alternatively, you may try to use (I found this very convenient) a pre-built tool-chain, available from here: https://github.com/raspberrypi/tools. Even if you know what you are doing, going through a seemingly endless list of compilation errors trying to identify all the pieces you are missing can be tiresome.