Hello, I am trying to configure/build GCC 4.8.1 from scratch. I do not have sudo privileges on the machine, so I am attempting to build/install it in a local directory. I have successfully built/installed GMP, MPC, MPFR, and ISL locally. I try to configure like this: ../gcc-4.8.1/configure --prefix=/home/mdl/ids103/gcc-4.8.1-install --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-lto --enable-languages=c,c++,fortran --with-ld=/home/mdl/ids103/binutils-2.24-install/bin --with-as=/home/mdl/ids103/binutils-2.24-install/bin --disable-multilib --with-cloog=/home/mdl/ids103/install --with-isl-lib=/home/mdl/ids103/install/lib --with-isl-include=/home/mdl/ids103/install/include/isl --with-gmp=/home/mdl/ids103/install --with-mpfr=/home/mdl/ids103/install --with-mpc=/home/mdl/ids103/install The last few lines of the output are: checking for the correct version of gmp.h... yes checking for the correct version of mpfr.h... yes checking for the correct version of mpc.h... yes checking for the correct version of the gmp/mpfr/mpc libraries... yes checking for version 0.10 of ISL... no checking for version 0.11 of ISL... no configure: error: Unable to find a usable ISL. See config.log for details. configure:5905: checking for version 0.11 of ISL configure:5924: gcc -o conftest -g -O2 -I/home/mdl/ids103/install/include/isl -I/home/mdl/ids103/install/include -I/home/mdl/ids103/install/include -I/home/mdl/ids103/install/include -L/home/mdl/ids103/install/lib conftest.c -lisl >&5 configure:5924: $? = 0 configure:5924: ./conftest ./conftest: error while loading shared libraries: libisl.so.10: cannot open shared object file: No such file or directory However, libisl.so.10 is indeed in /home/mdl/ids103/install/lib. Why is it not finding it? About a month ago, I successfully built the new GCC 4.9.0 the same way, without having any version of ISL installed. I suppose the configuration I used did not require it. But now, if I try to build 4.8.1, I get an error 15 minutes into the build from what seems to be due to not having ISL. Thanks!
