From 1c6a25377463c156f779e1f246e1e07ee6647bad Mon Sep 17 00:00:00 2001 From: Joshua Hursey Date: Wed, 12 Jul 2017 14:11:51 -0500 Subject: [PATCH] README: Note about ld issue for XL and PGI on PPC * Related to Issue #2606 and Issue #3075 * The core problem in those two issues is related to a regression in ld upstream. Add a note in the README about this issue. Signed-off-by: Joshua Hursey --- README | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/README b/README index 69d7e5612da..171e12510d3 100644 --- a/README +++ b/README @@ -185,6 +185,16 @@ Compiler Notes for more details: https://github.com/open-mpi/ompi/issues/3612 +- Compiling Fortran programs using the mpi_f08 module on PowerPC with + the PGI (tested 17.5) or XL (tested v15.1.5) Fortran compilers and GNU + linker after 2.25.1 and before 2.28 will likely experience runtime failures. + This was noticed on Ubuntu 16.04 which uses the 2.26.1 version of ld by + default. However, this issue impacts any OS running the impacted + version of ld. This GNU linker regression will be fixed in version 2.28. + Below is a link to the GNU bug on this issue: + https://sourceware.org/bugzilla/show_bug.cgi?id=21306 + The XL compiler will have a fix for this issue in their next release. + - On NetBSD-6 (at least AMD64 and i386), and possibly on OpenBSD, libtool misidentifies properties of f95/g95, leading to obscure compile-time failures if used to build Open MPI. You can work