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Date:      Thu, 12 Feb 2015 10:12:44 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-ports-bugs@FreeBSD.org
Subject:   [Bug 197563] net/mpich: port injects optimizer flags into wrappers
Message-ID:  <bug-197563-13@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197563

            Bug ID: 197563
           Summary: net/mpich: port injects optimizer flags into wrappers
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: tijl@FreeBSD.org
          Reporter: jahns@dkrz.de
          Assignee: tijl@FreeBSD.org
             Flags: maintainer-feedback?(tijl@FreeBSD.org)

I have built the mpich port because the default package didn't have Fortran.
Along this effort I noticed that the wrappers (mpicc, mpif90 etc.) insert
optimizer flags, which is unwelcome since that makes it harder to see what's
going on for the user or perform debug builds.

I used the following command to still build an optimized library, that does not
pass optimizer flags to the wrappers:

$ cd /usr/ports/net/mpich
$ sudo make install CFLAGS= \
MPICHLIB_CFLAGS="-O2 -pipe  -fstack-protector -fno-strict-aliasing" \
MPICHLIB_CXXFLAGS="-O2 -pipe  -fstack-protector -fno-strict-aliasing"

To add a working Fortran integration, the following was added to the above
command:

_GCC_VER=49 \
MPICHLIB_FCFLAGS="-O2" FFLAGS="-Wl,-rpath=/usr/local/lib/gcc49" \
MPICHLIB_FFLAGS="-O2" \
MPICH_LIBS="-L/usr/local/lib/gcc49 -Wl,-rpath,/usr/local/lib/gcc49 -lgcc_s"

That way the libgcc_s.so dependency of libmpi will be addressed by the wrappers
when Fortran is part of the mix. Obviously using gfortran49 is my choice and
not necessary.

Probably the ports Makefile can be changed to address this, but unfortunately I
don't understand the ports system well enough to make the change myself.

I did this build on FreeBSD 10.1 on x86_64 hardware. But I assume my changes
are general enough to translate to basically any hw FreeBSD runs on.

--- Comment #1 from Bugzilla Automation <bugzilla@FreeBSD.org> ---
Auto-assigned to maintainer tijl@FreeBSD.org

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