clang 5.0 on trusty is busted with respect to C11 atomics
This can be evidenced with the simple program below.
This test was added into OPAL_PROG_CC_C11_HELPER() and disable
C11 atomics if it fails.
_Atomic uint32_t a;
uint32_t b;
atomic_fetch_xor_explicit(&a, b, memory_order_relaxed);
Refs. open-mpi/ompi#6264
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
(cherry picked from commit open-mpi/ompi@d1fadebc65)
Revamp OPAL_PROG_CC_C11 macro in order to define macros only once.
Otherwise, macros get redefined during the configure process and
issue a bunch of warning in config.log. That would also cause
Open MPI fail to build if compiled with "-Werror"
Refs. open-mpi/ompi#5190
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
configure: add checks for `__thread` on top of current check for `_Thread_local` and define OPAL_HAVE_THREAD_LOCAL if the compiler support TLS.
Added `opal_thread_local` keyword to unify the definition.
Signed-off-by: Thananon Patinyasakdikul <thananon.patinyasakdikul@intel.com>
This commit updates the configure code for Open MPI to check for C11
support. The features requested are: atomics and thread local
storage.
References #3879
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
Some versions of clang (at least >= 3.5 -- perhaps older versions,
too?) will *warn* about -finline-functions, but still allow it. This
is very annoying, so check for that warning, too.
- This line, and those below, will be ignored--
M opal/mca/event/libevent2021/configure.m4
M opal/mca/hwloc/hwloc172/configure.m4
M configure.ac
M config/opal_setup_libltdl.m4
M config/opal_check_visibility.m4
M config/opal_setup_cc.m4
This commit was SVN r31637.
got linked together (work on one caused work in the other):
* Clean up a bunch of VAR_SCOPE issues in configure. This includes:
* Using VAR_SCOPE_PUSH and VAR_SCOPE_POP in more places
* Cleaning up the use of some shell variables (e.g., name them better)
* Add support for external libevent via
--with-libevent=<dir-to-libevent-install-tree>, as specifically
asked for by downstream packagers.
* Revamp how wrapper compiler RPATH (and RUNPATH) support is done.
The external libevent work exposed weakenesses in how the original
RPATH/RUNPATH work was done, so we had to re-do it to be a bit more
robust.
This work has not yet been tested on Solaris.
Refs trac:3694
This commit was SVN r29899.
The following Trac tickets were found above:
Ticket 3694 --> https://svn.open-mpi.org/trac/ompi/ticket/3694
This is helpful in the work for #3694: ensure that many places that
eventually end up in configure don't overly-pollute the global shell
variable space (because debugging accidental shell variable pollution
can be a real pain).
Refs trac:3694
This commit was SVN r29830.
The following Trac tickets were found above:
Ticket 3694 --> https://svn.open-mpi.org/trac/ompi/ticket/3694
This prevents bazillions of warnings from clang tha -Wno-long-double
isn't supported.
The warning that clang issues when it see -Wno-long-double is does not
use any of the words we were looking for, so I added "unknown" to the
list of words to look for. I also re-indented the two m4 tests so
that they're a bit more readable.
cmr=v1.7.4:reviewer=brbarret:subject=Update -Wno-long-double test to support clang
This commit was SVN r29681.
flags, and mca flags are kept seperate until the very end. The main configure
wrapper flags should now be modified by using the OPAL_WRAPPER_FLAGS_ADD
macro. MCA components should either let <framework>_<component>_{LIBS,LDFLAGS}
be copied over OR set <framework>_<component>_WRAPPER_EXTRA_{LIBS,LDFLAGS}.
The situations in which WRAPPER CPPFLAGS can be set by MCA components was
made very small to match the one use case where it makes sense.
This commit was SVN r27950.
config/ directory. We split them apart a while ago in the hopes that
it would simplify things, but it didn't really (e.g., because there
were still some ompi/opal .m4 files in the top-level config/
directory, resulting in developer confusion where any given m4 macro
was defined).
So this commit consolidates them back into the top-level directory for
simplicity.
There's still (at least) two changes that would be nice to make:
1. Split any generated .m4 file (e.g., autogen-generated .m4 files)
into a separate directory somewhere so that a top-level -Iconfig/
will only get our explicitly defined macros, not the autogen stuff
(e.g., with libevent2019 needing to get the visibility macro, but
NOT all the autogen-generated inclusion of component configure.m4
files).
1. Change configure to be of the form:
{{{
# ...a small amount of preamble/setup...
OPAL_SETUP
m4_ifdef([project_orte], [ORTE_SETUP])
m4_ifdef([project_ompi], [OMPI_SETUP])
# ...a small amount of finishing stuff...
}}}
I doubt we'll ever get anything as clean as that, but that would be
the goal to shoot for.
This commit was SVN r27704.
Continue the reorganization of the configure system. Move files from the main config directory to their appropriate level-specific config directories. Modify the configure system to correctly handle compiler detection, test, and setup so that all things pertaining to opal and orte are done at the lower level, with the ompi configure system only looking at mpi-specific options.
Ensure the wrapper compilers for orte and ompi only get built when appropriate. Add support for c++ to the orte wrapper compilers, both script and non-script versions.
This commit was SVN r22138.
C++ compiler in configure. If we have a C++ compiler, then the MPI
C++ bindings are built by default. If we don't have a C++ compiler,
then the MPI C++ bindings are not built by default.
--enable-mpi-cxx will now force an error if there is no C++ compiler
available. --disable-mpi-cxx (or the lack of a C++ compiler) will now
disable many of the C++ compiler checks in configure.
Note that there are a few items to clean up regarding the difference
between C's _Bool type and C++'s bool type. Right now, we assume that
they are the same. But they aren't, and they shouldn't be treated as
such. This cleanup will be forced in MPI-2.2 with the introduction of
the MPI_C_BOOL MPI datatype.
This commit was SVN r21755.
