On 22 December 2011 00:36, Joseph S. Myers wrote: > On Thu, 22 Dec 2011, Jonathan Wakely wrote: > >> It is almost always caused by installing libgmp.so etc. in a >> non-standard location and not using ldconfig, DT_RUNPATH, >> $LD_LIBRARY_PATH or some other method to tell the dynamic linker how >> to find them. The current installation docs mention --with-gmp right > > And for the normal case where $build and $host are the same (i.e. not a > Canadian cross) it should be possible to build and try running a program > using those libraries, maybe even one that checks the version is the same > as in the library headers, at an early point in configure, so giving a > meaningful error if someone is using previously installed libraries > without proper dynamic linker configuration. > > (That's not an argument against your patch; we should improve the > documentation as well as adding better detection of this common problem.)
Yes, better detection of the problem and a more meaningful error message would help significantly, but doing that is beyond my autoconf skills.
