Change gcc/binutils --prefix

Question

I once build and installed gcc and binutils with a wrong prefix (--prefix=/home/.../usr) passed to the configure script.

Now I reconfigured, rebuilt and reinstalled gcc and binutils with the right prefix (--prefix=/usr), however compiling always fails with:

$ /bin/ld: cannot find /home/../usr/lib/libc.so.6

Of course I could symlink the libraries in order to get it working, but I would like to know in which file these paths are saved and how I can change them.

Answer 1

Now I reconfigured, rebuilt and reinstalled gcc and binutils with the right prefix (--prefix=/usr), however compiling always fails with:

$ /bin/ld: cannot find /home/../usr/lib/libc.so.6

You probably have not rebuilt and re-installed libc, and the error comes from it.

On Linux, libc.so is a linker script, similar to this:

/* GNU ld script
   Use the shared library, but some functions are only in
   the static library, so try that secondarily.  */
OUTPUT_FORMAT(elf64-x86-64)
GROUP ( /lib/x86_64-linux-gnu/libc.so.6 /usr/lib/x86_64-linux-gnu/libc_nonshared.a  AS_NEEDED ( /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 ) )

I bet your libc.so has /home/../usr/lib/libc.so.6 in it.