Re: building fortran

[Tim Prince <timothyprince at sbcglobal dot net>]

Vadim Gutnik wrote:
> I'm having trouble building gfortran.
>
> I tried to build gcc-4.1.1 from source, on
>
> > uname -a
> Linux sockeye.impinj.com 2.4.21-37.ELsmp #1 SMP Wed Sep 28 13:18:44
> EDT 2005 x86_64 x86_64 x86_64 GNU/Linux
>
> I built a local copy of gmp and mpfr, and because I don't have root,
> put them in a nonstandard directory: /impinj/uns.
>
> I then 
>  setenv LDFLAGS "-Wl,--rpath -Wl,/impinj/uns/amd64_2.4/lib -Wl,--rpath -Wl,/impinj/uns/amd64_2.4/lib64"
>  setenv LD_LIBRARY_PATH /impinj/uns/amd64_2.4/lib:/impinj/uns/amd64_2.4/lib64
>
> ...make a clean build directory, and configure like this:
> ../../../src/gcc-4.1.1/configure   --prefix=/impinj/uns   \
>  --exec-prefix=/impinj/uns/amd64_2.4 --with-gmp=/impinj/uns/amd64_2.4 \
>  --with-mpfr=/impinj/uns/amd64_2.4 --disable-multilib
>
> then run 
>  make
>
> and 
>  make install
>
> This all builds without error.
>
> However, if I then 
>   unsetenv LD_LIBRARY_PATH 
> and run 
>
>  gfortran test.F
>
> I get 
>
> /impinj/uns/amd64_2.4/libexec/gcc/x86_64-unknown-linux-gnu/4.1.1/f951:relocation error:
> /impinj/uns/amd64_2.4/libexec/gcc/x86_64-unknown-linux-gnu/4.1.1/f951:undefined symbol: __gmp_get_memory_functions
>
> I also looked at:
>
>  ldd `which gfortran`
>         libc.so.6 => /lib64/libc.so.6 (0x0000002a95682000)
>         /lib64/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x0000002a95556000)
>
>  
>  ldd /impinj/uns/amd64_2.4/libexec/gcc/x86_64-unknown-linux-gnu/4.1.1/f951
>         libgmp.so.3 => /usr/lib64/libgmp.so.3 (0x0000002a95682000)
>         libc.so.6 => /lib64/libc.so.6 (0x0000002a957ba000)
>         /lib64/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x0000002a95556000)
IIRC, gmp and mpfr must be built with --enable-shared.  It definitely
doesn't work to have gfortran picking up .so from a different version
from the one you installed and attempted to specify for configure.