gcc local installation (linux) not finding runtime libs

[Lionel B <lionelbuk@xxxxxxxxxxx>]

Hi,

I am trying to maintain several local gcc installations, built from 
sorce, on my (linux x86_64) system. I find a problem with my gcc-4.1.2 
build/installation.

My setup is as follows: I have a local base directory, <gcc-base>, say in 
which I unpacked the gcc source to a subdir src. I also created, in <gcc-
base>, subdirs obj and install:

  <gcc-base>/src     <--- source tree
  <gcc-base>/obj     <--- for building
  <gcc-base>/install <--- for actuall installation

I also have binutils (2.17) in a similar setup, with the actual 
installation in a folder <binutils-base>/install.

I want these binutils (as, ld, etc.) - rather than the system versions 
in /usr/bin - to be used both for the gcc build and also to be used by 
gcc once built. To configure/build, I did as follows:

cd to <gcc-base>/obj

then configure as:

  <gcc-base>/src/configure --prefix=<gcc-base>/install --enable-
languages=c,c++ --with-gnu-as --with-as=<binutils-base>/install/bin/as --
with-gnu-ld --with-ld=<binutils-base>/install/bin/ld --enable-version-
specific-runtime-libs --with-build-time-tools=<binutils-base>/install/bin

I used --enable-version-specific-runtime-libs as there will be different 
runtime libs on my system. Then:

  make
  make install

All appeared to go smoothly. However, the new gcc does not appear to find 
the appropriate runtime libs. Test prog (C++):

  // test.cpp

  #include<iostream>

  int main()
  {
      std::cout << "Hallo world" << std::endl;
  }

I now compile:

  <gcc-base>/install/bin/g++ -c test.cpp

compiles ok. Linking:

  <gcc-base>/install/bin/g++ test.o -o test
  <binutils-base>/install/bin/ld: cannot find -lgcc_s
  collect2: ld returned 1 exit status

I can link ok statically (huge binary!), or by specifying the runtime lib 
search path explicitly:

  <gcc-base>/install/bin/g++ test.o -L<gcc-base>/install/lib/gcc/x86_64-
unknown-linux-gnu/lib64 -o test

Curiously, I followed the exact same procedure with gcc-4.1.1 and don't 
get this problem... what am I doing wrong?

-- 
Lionel B