openmpi.spec: Fix Open MPI packaging issue

Libtool archive files (.la files) create an unnecessary dependency
between linked applications and the development versions of packages
upon which Open MPI depends (to get the .so.1 -> .so symlink).

Remove .la libtool archive files to keep the best practice in
package builders.

Signed-off-by: Jie Zhang <zhngaj@amazon.com>

contrib/dist/linux/openmpi.spec

@@ -150,6 +150,10 @@
 %global _binary_filedigest_algorithm 1
 %global _source_filedigest_algorithm 1
 
+# Define this to 1 if you want to keep libtool achive files
+# Default is 0 (remove *.la files)
+# type: bool (0/1)
+%{!?install_libtool_archive: %define install_libtool_archive 0}
 #############################################################################
 #
 # Configuration Logic
@@ -478,6 +482,18 @@ export CFLAGS CXXFLAGS FCFLAGS
 # We don't need that in an RPM.
 find $RPM_BUILD_ROOT -name config.log -exec rm -f {} \;
 
+%if !%{install_libtool_archive}
+# Libtool archive files (.la files) create an unnecessary dependency
+# between linked applications and the development versions of packages
+# upon which Open MPI depends. For example, when building an application
+# which uses Libtool, Open MPI would create a dependency not just on
+# the HWLOC libs package, but the HWLOC devel package
+# (to get the .so.1 -> .so symlink). Best practice in package builders
+# appears to be to skip shipping .la files because of this issue.
+find $RPM_BUILD_ROOT/%{_libdir} -name \*.la -exec rm -f {} \;
+%endif
+# End of libotool_archive if
+
 # First, the [optional] modulefile
 
 %if %{install_modulefile}