I unmerged gcc what can I do to fix it?

[eyexer0]

I unmerge gcc and I can't get the new one to compile because I don't have a c compiler how can I fix this?

checking for C compiler default output file name... configure: error: C compiler cannot create executables

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emerge glibc

checking for a BSD-compatible install... /bin/install -c
checking whether ln -s works... yes
checking for i686-pc-linux-gnu-gcc... gcc
checking for suffix of object files... configure: error: cannot compute suffix of object files: cannot compile

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emerge =gcc-3.4.1-r3

>>> Compiling source in /var/tmp/portage/gcc-3.4.1-r3/work/gcc-3.4.1 ...
QA Notice: USE Flag 'elibc_uclibc' not in IUSE for sys-devel/gcc-3.4.1-r3
 * CFLAGS="   "
 * CXXFLAGS="   "
 * GCJFLAGS="   "
 * Configuring GCC...
creating cache ./config.cache
checking host system type... i686-pc-linux-gnu
checking target system type... i686-pc-linux-gnu
checking build system type... i686-pc-linux-gnu
checking for a BSD compatible install... /bin/install -c
*** This configuration is not supported in the following subdirectories:
     target-libffi target-boehm-gc target-zlib target-libjava zlib fastjar target-libobjc
    (Any other directories should still work fine.)
Could not run/locate "gcc"
Could not run/locate "gcc"
*** The command 'gcc -o conftest       conftest.c' failed.
*** You must set the environment variable CC to a working compiler.

!!! ERROR: sys-devel/gcc-3.4.1-r3 failed.
Call stack:
  ebuild.sh, line 1539:   Called dyn_compile
  ebuild.sh, line 939:   Called src_compile
  gcc-3.4.1-r3.ebuild, line 632:   Called die

!!! (no error message)
!!! If you need support, post the topmost build error, and the call stack if relevant.

[CptnObvious999]

there's a wiki page just for you
http://gentoo-wiki.com/HOWTO_Recover_fr ... merge_gcc"

don't forget to add yourself to the Wall of Shame

[eyexer0]

ok I did everything on that part but now I get this......

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cdimage / # gcc-config -l
 * /usr/sbin/gcc-config: Profile does not exist!

cdimage / # gcc-config i686-pc-linux-gnu-3.3.4-r1
 * /usr/sbin/gcc-config: Profile does not exist!

[r0shi]

im having the same problem
gcc-config can't find any configs when running gcc-config -l

[eyexer0]

basicly what I had to do is just completely re-install with a fresh install

[hvengel]

I somehow had gcc get corrupted doing a:

emerge -u --newuse world

The change to my use variable caused a rebuild of gcc and the next item to be built failed. Slightly different from unmerging gcc but I found the Wiki very useful and was able to recover gcc without too much difficulty.

Because I did not do a unmerge of gcc my situation is slightly different and I did not extract the files to / (I did not use -C / in the tar command). As a result I ended up selectively copying directories from the downloaded extracted tar file into the correct places on my root file system (/). Be careful only copy the stuff that is specific to the "new" (downloaded binary) version of gcc. By looking at the extracted directories and files it was fairly simple to figure out what needed to be copied. At that point the gcc-config stuff worked and I was able to re-emerge gcc and got it working by following the remaining steps in the Wiki. I was then able to finish up the emerge -u --newuse world with the recovered gcc. Overall a very useful Wiki entry.

[Sachankara]

In the future, add FEATURES="buildpkg" to /etc/make.conf so that portage creates binary packages of every compiled package. Thus you can simply install the old binary if you manage to f*** something up...