Re-enable the full build on OS X and add a OS X 10.10 build

.travis.yml

@@ -72,7 +72,17 @@ matrix:
             - package/linux/travis-deploy-cpp.sh
 
         - os: osx
-          osx_image: xcode9.4
+          osx_image: xcode6.4 # OS X 10.10
+          env:
+            - TARGET=main
+          cache:
+            directories:
+              - /usr/local/Homebrew
+              - $HOME/Library/Caches/Homebrew
+              - local-lib
+
+        - os: osx
+          osx_image: xcode9.4 # OS X 10.13
           env:
             - TARGET=main
           cache:

package/osx/make_dmg.sh

@@ -13,7 +13,6 @@ set -euo pipefail
 if !(perl -Mlocal::lib=local-lib -MPAR::Packer -e1 2> /dev/null); then
     echo "The PAR::Packer module was not found; installing..."
     cpanm --local-lib local-lib PAR::Packer
-    exit 1
 fi
 
 WD=$(dirname $0)

package/osx/travis-build-main.sh

@@ -7,9 +7,7 @@ brew link --overwrite perl cpanminus
 
 export SLIC3R_STATIC=1
 export BOOST_DIR=/usr/local
-#perl ./Build.PL
+perl ./Build.PL
 
 export LIBRARY_PATH=/usr/local/lib
-cpanm -v --reinstall --local-lib local-lib Alien::wxWidgets
-cpanm -v --reinstall --local-lib local-lib Wx
 perl ./Build.PL --gui