do parallel builds for travis macos. (#305)

diff --git a/tools/travis_script_osx b/tools/travis_script_osx
index c757ae179ed30a8e89f3aa91576e83d9d21dff8d..b10ab5244a8e6ef9b1625712b7592c9240d26d0a 100755 (executable)
--- a/tools/travis_script_osx
+++ b/tools/travis_script_osx
@@ -14,11 +14,11 @@ VERSIONID=${VERSIONID:-$(date -ju -f %Y-%m-%dT%H:%M:%S%z $(git show -s --format=
 "$(cd "$(dirname "${BASH_SOURCE[0]}" )" && pwd)"/ci_tokens
 
 # build and test the CLI
-$QMAKE GPSBabel.pro && make && make check
+$QMAKE GPSBabel.pro && make -j 2 && make check
 
 # build the GUI
 pushd gui
-$QMAKE app.pro && make
+$QMAKE app.pro && make -j 2
 $LUPDATE app.pro
 $LRELEASE app.pro
 popd