Andrew Haley <aph-gcc@xxxxxxxxxxxxxxxxxxx> wrote on 09/11/2007 08:36:57 AM: > ericbambach1@xxxxxxxxxxxx writes: > > Thanks for responding. > > > > Andrew Haley <aph-gcc@xxxxxxxxxxxxxxxxxxx> wrote on 09/11/2007 04:53:09 > > AM: > > > > > ericbambach1@xxxxxxxxxxxx writes: > > > > Hello, > > > > > > > > Please CC as I'm not subscribed. Hope line breaks are ok, I > > hate > > > > Lotus Notes :) > > > > > > > > I'm having a lot of trouble getting gcc 4.2.1 compiled and > > run on > > > > AIX 5.3 on the power5 architecture. Even after GCC compiles > > successfully > > > > it seems libstdc++.a isn't built correctly. > > > > > > > > We have the IBM binary gcc-4.0.0 compiler installed in > > > > /opt/freeware/bin so I know its possible to get GCC on here somehow. > > > > > > > > It builds fine but compilation of this simple test program > > fails > > > > with g++. gcc SEEMS to function ok but I havent checked it in depth > > yet. > > > > Take a look at the session below (edited for readability + mask > > > > user+hostname only) where it first fails to find libgcc_s even though > > the > > > > configure script placed it in /sys/usr/lib just like I asked, Next it > > cant > > > > link against libstdc++.a. Once I turn on the verbose output I see > > that > > > > libstdc++.a has no symbols being imported! I dont know much about > > > > compilers but it seems that I need SOME symbols from libstdc++ are > > needed. > > > > Last, if I force it to link against IBM's libstdc++.a it works fine. > > > > > > > > Am I building gcc wrong? I did build it with GNU make and the > > AIX > > > > as+ld. I borrowed IBM's config flags from 4.0.0. Any additional info > > > > needed? > > > > > > This is a clue: > > > > > > Configured with: ../gcc-4.2.1/configure --with-as=/usr/bin/as > > > --with-ld=/usr/bin/ld --disable-nls --enable-languages=c,c++ > > > --prefix=/sys/usr/local --bindir=/sys/usr --enable-threads > > > --enable-version-specific-runtime-libs --host=powerpc-ibm-aix5.3.0.0 : > > > (reconfigured) ../gcc-4.2.1/configure --with-as=/usr/bin/as > > > --with-ld=/usr/bin/ld --disable-nls --enable-languages=c,c++ > > > --prefix=/sys/usr/local --with-slibdir=/sys/usr/lib --enable-threads > > > --enable-version-specific-runtime-libs --host=powerpc-ibm-aix5.3.0.0 > > > > > > So, you configured and built gcc without specifying the dir for the > > > shared libgcclibrary, and you then reconfigured with one. Why did you > > > do this? > > > > At first I was just testing the build. Then I reconfigured to put the > > libraries int the location we need them for the server. I figure that may > > be why it can't find libgcc_s initially, but I'm not too worried about > > that. I'm more worried that it can't find symbols in libstdc++. > > Well no, you didn't. You put libgcc in one place and the rest of the > libraries in another. This is a Bad Thing. You should only use > --with-slibdir in very special circumstances -- otherwise you should > just put everything in the prefix. > Well removing --with-slibdir fixed all my problems. Doh! Thanks for that cluestick. However, how should I configure GCC so that all the stuff needed for runtime is in /sys/usr/lib but everything else in /sys/usr/local. That is, we have a dev box that compiles code and a production box without a compiler that should run this code. We only want the bare minimum needed to run programs copied to the prod box. Will --libdir=/sys/usr/lib --prefix=/sys/usr/local suffice? Then we can copy contents of /sys/usr/lib over. It seems that libgcc_s and libstdc++.a are the only gcc specific runtimes needed. Would it be bad to configure with --prefix=/sys/usr/local then copy /sys/usr/local/lib/ to /sys/usr/lib by hand on the production box as long as /sys/usr lib is in the LIBPATH? Thanks again!
