On Tue, 27 Oct 2020, Maria Clara via Gcc-help wrote:
Hello. I am trying to configure gcc with:
./configure --prefix=/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/GCC-4.94/
--with-gmp=/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Gmp-4.3.2/
--with-mpfr=/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Mpfr-2.4.2/
--with-mpc=/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Mpc-0.8.1/
--with-cloog=/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Cloog-0.18.1/
--with-isl=/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Isl-0.12.2/
and all I receive it is:
checking for version 0.10 of ISL... no
checking for version 0.11 of ISL... no
checking for version 0.12 of ISL... no
checking for version 0.14 of ISL... no
checking for version 0.15 of ISL... no
configure: error: Unable to find a usable ISL. See config.log for details.
Then I proceeded to look in config.log. There I saw things like:
configure:5894: checking for version 0.10 of ISL
configure:5913: gcc -o conftest -g -O2
-I/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Isl-0.12.2//include
-I/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Gmp-4.3.2//include
-I/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Mpfr-2.4.2//include
-I/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Mpc-0.8.1//include
-L/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/Isl-0.12.2//lib
conftest.c -lisl >&5
configure:5913: $? = 0
configure:5913: ./conftest
./conftest: error while loading shared libraries: libisl.so.10: cannot
open shared object file: No such file or directory
[...]
See the first 2 questions of https://gcc.gnu.org/wiki/FAQ . Gcc does not
set a runpath, so you need to add one yourself (LD_LIBRARY_PATH, or
-Wl,-rpath,... I don't know where, possibly LDFLAGS, *_LDFLAGS,
LD_RUN_PATH, etc) or make sure one is not needed (install the shared
libraries in a standard location or use static libraries, as happens with
contrib/download_prerequisites).
--
Marc Glisse
