gcc/g++ don't work in home folder

[Mahmood Naderan]

Hi
I have these versions of gcc/g++

    $ ls /usr/bin/gcc* -l
    lrwxrwxrwx 1 root root      7 Mar 13  2012 /usr/bin/gcc -> gcc-4.6
    -rwxr-xr-x 1 root root  92888 Mar 16  2006 /usr/bin/gcc-3.4
    -rwxr-xr-x 1 root root 259232 Apr 16  2012 /usr/bin/gcc-4.4
    -rwxr-xr-x 1 root root 353216 Apr 16  2012 /usr/bin/gcc-4.6

    $ ls -l /usr/bin/g++*
    lrwxrwxrwx 1 root root      7 Mar 13  2012 /usr/bin/g++ -> g++-4.6
    -rwxr-xr-x 1 root root  94808 Mar 16  2006 /usr/bin/g++-3.4
    lrwxrwxrwx 1 root root     52 Feb  6 23:32 /usr/bin/g++-4.1 -> /opt/gcc-4.1.2/host-x86_64-unknown-linux-gnu/gcc/g++
    -rwxr-xr-x 1 root root 263328 Apr 16  2012 /usr/bin/g++-4.4
    -rwxr-xr-x 1 root root 357312 Apr 16  2012 /usr/bin/g++-4.6


I don't know what happened to my ubuntu 12.04, that when I run "g++" command in the home folder, I get weird response

    mahmood@pc:~$ g++ -v
    Reading specs from ./specs
    g++: ./specs: Is a directory

    mahmood@pc:~$ /usr/bin/gcc-4.4 -v
    Reading specs from ./specs
    gcc-4.4: ./specs: Is a directory

    mahmood@pc:~$ /usr/bin/g++-4.6
    g++-4.6: error: ./specs: Is a directory


'specs' is a folder in my home. However when I run the same command in another folder (~/trunk), there is no problem.

    mahmood@pc:trunk$ g++ -v
    Using built-in specs.
    Target: x86_64-unknown-linux-gnu
    Configured with: ./configure --disable-multilib
    Thread model: posix
    gcc version 4.1.2

    mahmood@pc:trunk$ /usr/bin/gcc-4.4 -v
    Using built-in specs.
    Target: x86_64-linux-gnu
    Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.4.7-1ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
    Thread model: posix
    gcc version 4.4.7 (Ubuntu/Linaro 4.4.7-1ubuntu2)

    mahmood@pc:trunk$ /usr/bin/g++-4.6
    g++-4.6: fatal error: no input files
    compilation terminated.



This is the first time I see such a problem.




Regards,
Mahmood