Travis: enable OSX support for CI builds

We currently build every BOINC component in one go on Mac. This is kind of intended as the build capacity for OSX on Travis CI is capped at 128 builds at the same time right now and extra builds will only add to the already full queue.

.travis.yml

@@ -1,4 +1,7 @@
 language: cpp
+os:
+  - linux
+  - osx
 compiler:
   - gcc
 #  - clang
@@ -21,7 +24,7 @@ sudo: false
 cache:
   apt: true
   directories:
-  - build/wxWidgets-3.0.2
+  - 3rdParty/buildCache
 
 addons:
   coverity_scan:
@@ -71,14 +74,27 @@ env:
 
 matrix:
   fast_finish: true
+  exclude:
+# the osx build currently builds everything in one go
+  - os: osx
+    env: BOINC_TYPE=libs
+  - os: osx
+    env: BOINC_TYPE=server
+  - os: osx
+    env: BOINC_TYPE=client
+  - os: osx
+    env: BOINC_TYPE=apps
+  - os: osx
+    env: BOINC_TYPE=libs-mingw
 
 before_script:
-- ./_autosetup
+- if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then ( ./_autosetup ) fi
 
 script:
 - if [[ "${BOINC_TYPE}" == "libs" ]]; then ( ./configure --disable-server --disable-client --disable-manager && make ) fi
 - if [[ "${BOINC_TYPE}" == "server" ]]; then ( ./configure --disable-client --disable-manager && make ) fi
 - if [[ "${BOINC_TYPE}" == "client" ]]; then ( ./configure --disable-server --disable-manager && make ) fi
 - if [[ "${BOINC_TYPE}" == "apps" ]]; then ( ./configure --enable-apps --disable-server --disable-client --disable-manager && make ) fi
-- if [[ "${BOINC_TYPE}" == "manager" ]]; then ( ./build/getWxWidgets.sh && ./configure --disable-server --disable-client --with-wxdir=./build/wxWidgets-3.0.2/buildgtk && make ) fi
+- if [[ "${BOINC_TYPE}" == "manager" && "${TRAVIS_OS_NAME}" == "linux" ]]; then ( ./build/getWxWidgets.sh && ./configure --disable-server --disable-client --with-wxdir=./build/wxWidgets-3.0.2/buildgtk && make ) fi
+- if [[ "${BOINC_TYPE}" == "manager" && "${TRAVIS_OS_NAME}" == "osx" ]]; then ( ./3rdParty/buildMacDependencies.sh && ./mac_build/buildMacBOINC-CI.sh --no_shared_headers ) fi
 - if [[ "${BOINC_TYPE}" == "libs-mingw" ]]; then ( cd lib && CC=/usr/bin/x86_64-w64-mingw32-gcc; CXX=/usr/bin/x86_64-w64-mingw32-g++; make -f Makefile.mingw ) fi