Jose Luis García Pallero wrote: > Hi, > Only LD_LIBRARY_PATH=/home/user/gcc-4.2.0/lib:$LD_LIBRARY_PATH? > What about include files? For example, if I want to compile a tipycal hello world program in C, what stdio.h use the compiler, the new 4.2.0 or the old 4.1.2? If I want to compile a program with gcc-4.1.2 instead of 4.2.0, what about the new LD_LIBRARY_PATH=/home/user/gcc-4.2.0/lib:$LD_LIBRARY_PATH order? > Need add LD_LIBRARY_PATH=/home/user/gcc-4.2.0/lib:$LD_LIBRARY_PATH order if I compile, for example, gcc/g77 too? > I just asked almost the same question in another thread: "Two Versions of GCC" I am doing the PATH export and the LD_LIBRARY_PATH export, however upon linking some things i get link errors because it is trying to link using the old system installed GCC libstdc++ libraries, not the ones in my home directory. I dont see why thought because the link command looks like: g++ -g -O2 -o .libs/library_user library_user-main.o .libs/library_userS.o -L/home/bcosta/build/edoc/gcc-4.0.1/i386-unknown-netbsdelf3.0/libstdc++-v3/src -L/home/bcosta/build/edoc/gcc-4.0.1/i386-unknown-netbsdelf3.0/libstdc++-v3/src/.libs -L/home/bcosta/build/edoc/gcc-4.0.1/gcc ../../../src/plugins/myplugin/.libs/myplugin.a /home/bcosta/build/example/src/libs/mystatic/.libs/libmystatic.a -lm ../../../src/libs/myshared/.libs/libmyshared.so ../../../src/libs/mystatic/.libs/libmystatic.a /home/bcosta/build/install/edoc_gcc/lib/libstdc++.so ../../../libltdl/.libs/libltdlc.a -Wl,--rpath -Wl,/home/bcosta/build/install_example/lib -Wl,--rpath -Wl,/home/bcosta/build/install/edoc_gcc/lib Notice the: /home/bcosta/build/install/edoc_gcc/lib/libstdc++.so line which says its linking the libstdc++ from the home directory NOT the user one. For some reason, libstdc++ from /usr/lib is being used instead... Or so it seems. The other thread has more details. Any thoughts? Just as an additional note to the original question, i dont know if it is necessary but my configuration options include: --with-local-prefix=/home/user/gcc-4.2.0 as well as the standard --prefix. I dont remember where i got this from as i have been doing it for a while now. Brendon.
