Am 03.07.2010 um 04:20 schrieb Lisandro Dalcin:
On 28 June 2010 04:26, Reuti <re...@staff.uni-marburg.de> wrote:
I saw makefiles, where the compilers (i.e. MPI wrappers) were only
used for
compiling the source to object files. Later on these were still
linked with
`gcc` or `ld`. Hence the MPI library must be accessed also for the
linker
step by `mpicc` instead of `gcc` when setting $LD is supported, or
set in
e.g. $LDFLAGS for the latter.
Why is there no `mpild` to do this automatically then?
Why not use LD=mpicc ?
This will only work, when it is intended to use the original compiler
as an interface to the linker. When it's calling the plain `ld` with
native options like "-rpath /home/reuti/lib" this won't work, as e.g.
for `gcc` this has to be coded like " -Wl,-rpath -Wl,/home/reuti/lib"
to be forwarded to the linker.
`mpild` should forward the plain `ld` options but automatically add
all necessary Open MPI libs.
-- Reuti
--
Lisandro Dalcin
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