Travis: Re-enable threads tests

Signed-off-by: James Dinan <[email protected]>

.travis.yml

@@ -36,11 +36,9 @@ script:
     - cd $SOS_SRC
     - mkdir build
     - cd build
-    - oshcc -showme
-    - oshc++ -showme
-    - oshfort -showme
-    # FIXME: Fortran and threads tests temporarily disabled because of
-    # compilation issues in Travis environment
-    - ../configure CC=oshcc CXX=oshc++ FC=oshfort CFLAGS="-std=gnu99" FCFLAGS="-fcray-pointer" --disable-fortran --disable-threads
+    # FIXME: Fortran tests temporarily disabled because of compilation issues
+    # in Travis environment.  With gcc 4.8 in Ubuntu Trusty, pthreads configury
+    # doesn't seem to detect the need for -lpthread.
+    - ../configure CC=oshcc CXX=oshc++ FC=oshfort CFLAGS="-std=gnu99" FCFLAGS="-fcray-pointer" LDFLAGS="-lpthread" --disable-fortran
     - make $TRAVIS_PAR_MAKE
     - make check