Hi Ian, Thanks for your answer. Actually I tried to do it like this: ./configure --prefix= --exec-prefix= --enable-languages=c,c++ Hence, I would suspect after the make and make install it would have overwritten any library. Also also have the gcc in /usr. However, in ld.so.conf, first /bin is called so I would expect that always first /bin is being searched for any lib. How to check what versions of gcc libs are installed? Any hints on repairing this issue? Kind Regards, Reinoud. -----Original Message----- From: Ian Lance Taylor [mailto:iant@xxxxxxxxxx] Sent: Friday, March 06, 2009 5:56 PM To: Koornstra, Reinoud Cc: gcc-help@xxxxxxxxxxx Subject: Re: libstdc issue "Koornstra, Reinoud" <koornstra@xxxxxx> writes: > I compiled gcc 4.1.2 and installed it. > Compiled swig as well, however, upon starting it give me this: > > swig: /lib/libgcc_s.so.1: version `GCC_4.2.0' not found (required by /lib/libstdc++.so.6) > > These libs come included in gcc and I cannot image that such an inconsistency would exist in the gcc source. > Any hints how to resolve this? gcc does not normally install libgcc_s.so.1 in /lib, so my guess is that that file came from your OS, and your dynamic linker is finding it before the libgcc_s.so.1 which was installed by gcc. You could try making it a symlink to the libgcc_s.so.1 which you installed. Note that you can confuse systems by building and installing gcc into system directories like /lib, overwriting the system libraries and compilers. It's often better to install gcc and use it elsewhere. Ian
