diff --git a/.travis.yml b/.travis.yml
index d479dbf36a..214f283d79 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,15 +2,24 @@ language: cpp
 sudo: false
 
 # Build matrix:
+os:
+- linux
+- osx
 compiler:
-- gcc
 - clang
 env:
-- BUILD_METALIBS=OFF COMPOSITE_SOURCE_LIMIT=0
-- BUILD_METALIBS=ON COMPOSITE_SOURCE_LIMIT=0
-- BUILD_METALIBS=OFF COMPOSITE_SOURCE_LIMIT=30
 - BUILD_METALIBS=ON COMPOSITE_SOURCE_LIMIT=30
 - BUILD_METALIBS=ON COMPOSITE_SOURCE_LIMIT=30 PYTHON_INTERP=python2.7
+- BUILD_METALIBS=OFF COMPOSITE_SOURCE_LIMIT=30
+- BUILD_METALIBS=ON COMPOSITE_SOURCE_LIMIT=0
+matrix:
+  exclude:
+    - os: osx
+      env: BUILD_METALIBS=ON COMPOSITE_SOURCE_LIMIT=0
+  include:
+    - os: osx
+      env: BUILD_METALIBS=ON COMPOSITE_SOURCE_LIMIT=30 COMPOSITE_SOURCE_EXCLUSIONS=p3showbase;p3dtoolutil;p3cocoadisplay;p3osxdisplay;p3tinydisplay;p3display
+    - compiler: gcc
 
 addons:
   apt:
@@ -40,6 +49,7 @@ addons:
     - nvidia-cg-toolkit
     - python-dev
     - python3-dev
+    - python3-pip
     - python-virtualenv
     - zlib1g-dev
     - fakeroot
@@ -50,7 +60,19 @@ before_install:
 - makepanda/selfdestruct.py --yes
 
 install:
-- virtualenv --python=${PYTHON_INTERP:-python3.4} venv && source venv/bin/activate
+- >
+  if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
+    brew install python@3 eigen libtar fftw libsquish zlib ffmpeg freetype \
+    bullet opencv assimp libvorbis openssl || true
+    brew install ode --with-shared
+
+    # We can't trust brew to make the right symlinks, so execute commands as modules
+    ${PYTHON_INTERP:-python3} -m pip install virtualenv
+    ${PYTHON_INTERP:-python3} -m virtualenv venv
+  else
+    virtualenv --python=${PYTHON_INTERP:-python3} venv
+  fi
+- source venv/bin/activate
 - pip install pytest
 
 before_script:
@@ -62,7 +84,19 @@ script:
 # interrogate has a way of explicitly calling init_libpanda)
 - '[ "x$BUILD_METALIBS" == "xON" ] || export LDFLAGS=-Wl,--no-as-needed'
 
-- cmake -DHAVE_GTK2=NO -DBUILD_METALIBS=$BUILD_METALIBS -DCOMPOSITE_SOURCE_LIMIT=$COMPOSITE_SOURCE_LIMIT .. 
+- >
+  if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
+    if [[ "$PYTHON_INTERP" == "python2.7" ]]; then
+      export PY2_CMAKE_ARGS=-DPYTHON_EXECUTABLE=/usr/local/Frameworks/Python.framework/Versions/2.7/bin/python
+    fi
+
+    cmake -DHAVE_CARBON=NO -DBUILD_METALIBS=$BUILD_METALIBS \
+    -DCOMPOSITE_SOURCE_LIMIT=$COMPOSITE_SOURCE_LIMIT \
+    -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl $PY2_CMAKE_ARGS ..
+  else
+    cmake -DHAVE_GTK2=NO -DBUILD_METALIBS=$BUILD_METALIBS \
+    -DCOMPOSITE_SOURCE_LIMIT=$COMPOSITE_SOURCE_LIMIT ..
+  fi
 - make -j4
 
 - export PYTHONPATH=$PWD
diff --git a/cmake/macros/CompositeSources.cmake b/cmake/macros/CompositeSources.cmake
index ad0ac24a2e..f4d2c963c6 100644
--- a/cmake/macros/CompositeSources.cmake
+++ b/cmake/macros/CompositeSources.cmake
@@ -26,6 +26,10 @@ build dramatically but will be more memory intensive than a low value.")
 set(COMPOSITE_SOURCE_EXTENSIONS "cxx;c;mm" CACHE STRING
   "Only files of these extensions will be added to composite files.")
 
+set(COMPOSITE_SOURCE_EXCLUSIONS "" CACHE STRING
+  "A list of targets to skip when compositing sources. This is mainly
+desirable for CI builds.")
+
 set(COMPOSITE_GENERATOR "${CMAKE_SOURCE_DIR}/cmake/scripts/MakeComposite.cmake")
 
 
@@ -36,8 +40,12 @@ function(composite_sources target sources_var)
   set(sources ${orig_sources})
   list(LENGTH sources num_sources)
 
-  if(num_sources LESS 2 OR ${COMPOSITE_SOURCE_LIMIT} LESS 2)
-    # It's silly to do this for a single source.
+  # Don't composite if in the list of exclusions, and don't bother compositing
+  # with too few sources
+  list (FIND COMPOSITE_SOURCE_EXCLUSIONS ${target} _index)
+  if(num_sources LESS 2
+    OR ${COMPOSITE_SOURCE_LIMIT} LESS 2
+    OR ${_index} GREATER -1)
     return()
   endif()
 
diff --git a/direct/src/showbase/CMakeLists.txt b/direct/src/showbase/CMakeLists.txt
index 0946ca10c5..091ad7c0d4 100644
--- a/direct/src/showbase/CMakeLists.txt
+++ b/direct/src/showbase/CMakeLists.txt
@@ -1,5 +1,18 @@
+set(P3SHOWBASE_FILES
+    showBase.cxx
+    showBase.h)
+
+if(APPLE)
+  list(APPEND P3SHOWBASE_FILES showBase_assist.mm)
+endif()
+
 add_component_library(p3showbase NOINIT SYMBOL BUILDING_DIRECT_SHOWBASE
-  showBase.cxx showBase.h)
+  ${P3SHOWBASE_FILES})
+
+if(APPLE)
+  set_target_properties(p3showbase PROPERTIES COMPILE_FLAGS "-ObjC++")
+endif()
+
 target_link_libraries(p3showbase p3directbase panda)
 target_interrogate(p3showbase ALL)
 
diff --git a/dtool/Config.cmake b/dtool/Config.cmake
index a7d5a21043..80b15fd016 100644
--- a/dtool/Config.cmake
+++ b/dtool/Config.cmake
@@ -515,7 +515,7 @@ endif()
 #package_option(XCURSOR
 #  "This enables custom cursor support in x11display.")
 
-if(HAVE_GL AND HAVE_X11)
+if(HAVE_GL AND HAVE_X11 AND NOT APPLE)
   option(HAVE_GLX "Enables GLX. Requires OpenGL and X11." ON)
 else()
   option(HAVE_GLX "Enables GLX. Requires OpenGL and X11." OFF)
diff --git a/dtool/Package.cmake b/dtool/Package.cmake
index f63406f60e..7b2e4c4dc7 100644
--- a/dtool/Package.cmake
+++ b/dtool/Package.cmake
@@ -294,6 +294,10 @@ package_option(OPENAL
   LICENSE "LGPL")
 config_package(OPENAL "OpenAL sound library")
 
+if(OPENAL_FOUND AND APPLE)
+  set(HAVE_OPENAL_FRAMEWORK YES)
+endif()
+
 
 #
 # ------------ FreeType ------------
diff --git a/dtool/dtool_config.h.in b/dtool/dtool_config.h.in
index 9cf6ba5b8d..30b95773d9 100644
--- a/dtool/dtool_config.h.in
+++ b/dtool/dtool_config.h.in
@@ -15,6 +15,9 @@
 /* Define if we have RAD game tools, Miles Sound System installed.  */
 #cmakedefine HAVE_RAD_MSS
 
+/* Define if we have OpenAL installed as a framework. */
+#cmakedefine HAVE_OPENAL_FRAMEWORK
+
 /* Define if we have Freetype 2.0 or better available. */
 #cmakedefine HAVE_FREETYPE
 
diff --git a/dtool/src/dtoolutil/CMakeLists.txt b/dtool/src/dtoolutil/CMakeLists.txt
index eab710f3fb..e624bf5985 100644
--- a/dtool/src/dtoolutil/CMakeLists.txt
+++ b/dtool/src/dtoolutil/CMakeLists.txt
@@ -29,6 +29,7 @@ set(P3DTOOLUTIL_HEADERS
 if(APPLE)
   set(P3DTOOLUTIL_HEADERS ${P3DTOOLUTIL_HEADERS}
     filename_assist.mm filename_assist.h)
+  set_source_files_properties(filename_assist.mm filename_assist.h PROPERTIES WRAP_EXCLUDE YES)
 endif()
 
 set(P3DTOOLUTIL_SOURCES
@@ -72,6 +73,7 @@ target_link_libraries(p3dtoolutil p3dtoolbase ${CMAKE_DL_LIBS})
 target_interrogate(p3dtoolutil ALL EXTENSIONS ${P3DTOOLUTIL_IGATEEXT})
 
 if(APPLE)
+  set_target_properties(p3dtoolutil PROPERTIES COMPILE_FLAGS "-ObjC++")
   find_library(FOUNDATION_LIBRARY Foundation)
   find_library(APPKIT_LIBRARY AppKit)
   target_link_libraries(p3dtoolutil ${FOUNDATION_LIBRARY} ${APPKIT_LIBRARY})
diff --git a/panda/src/cocoadisplay/CMakeLists.txt b/panda/src/cocoadisplay/CMakeLists.txt
index 2e39c4ee4b..bd7673ef89 100644
--- a/panda/src/cocoadisplay/CMakeLists.txt
+++ b/panda/src/cocoadisplay/CMakeLists.txt
@@ -7,7 +7,8 @@ set(P3COCOADISPLAY_HEADERS
     cocoaGraphicsPipe.h cocoaGraphicsPipe.I
     cocoaGraphicsWindow.h cocoaGraphicsWindow.I
     cocoaGraphicsStateGuardian.h cocoaGraphicsStateGuardian.I
-    cocoaPandaApp.h cocoaPandaView.h cocoaPandaWindowDelegate.h)
+    cocoaPandaApp.h cocoaPandaView.h cocoaPandaWindowDelegate.h
+    cocoaPandaAppDelegate.h)
 
 set(P3COCOADISPLAY_SOURCES
     config_cocoadisplay.mm
@@ -18,11 +19,13 @@ set(P3COCOADISPLAY_SOURCES
     cocoaPandaApp.mm
     cocoaPandaView.mm
     cocoaPandaWindow.mm
-    cocoaPandaWindowDelegate.mm)
+    cocoaPandaWindowDelegate.mm
+    cocoaPandaAppDelegate.mm)
 
-#composite_sources(p3cocoadisplay P3COCOADISPLAY_SOURCES)
-add_library(p3cocoadisplay ${P3COCOADISPLAY_HEADERS} ${P3COCOADISPLAY_SOURCES})
-set_target_properties(p3cocoadisplay PROPERTIES DEFINE_SYMBOL BUILDING_PANDA_COCOADISPLAY)
+composite_sources(p3cocoadisplay P3COCOADISPLAY_SOURCES)
+add_component_library(p3cocoadisplay SYMBOL BUILDING_PANDA_COCOADISPLAY
+  ${P3COCOADISPLAY_HEADERS} ${P3COCOADISPLAY_SOURCES})
+set_target_properties(p3cocoadisplay PROPERTIES COMPILE_FLAGS "-ObjC++")
 target_link_libraries(p3cocoadisplay p3display p3putil p3glgsg)
 
 # Frameworks:
@@ -32,4 +35,6 @@ find_library(CARBON_LIBRARY Carbon)
 target_link_libraries(p3cocoadisplay
   ${APPLICATIONSERVICES_LIBRARY} ${APPKIT_LIBRARY} ${CARBON_LIBRARY})
 
-install(TARGETS p3cocoadisplay DESTINATION lib)
+if(NOT BUILD_METALIBS)
+  install(TARGETS p3cocoadisplay DESTINATION lib)
+endif()
diff --git a/panda/src/cocoadisplay/cocoaPandaApp.mm b/panda/src/cocoadisplay/cocoaPandaApp.mm
index e7226786da..83f0b8ef42 100644
--- a/panda/src/cocoadisplay/cocoaPandaApp.mm
+++ b/panda/src/cocoadisplay/cocoaPandaApp.mm
@@ -12,6 +12,7 @@
  */
 
 #import "cocoaPandaApp.h"
+#include "config_cocoadisplay.h"
 
 @implementation CocoaPandaApp
 - (void) sendEvent: (NSEvent *) event {
diff --git a/panda/src/display/subprocessWindow.cxx b/panda/src/display/subprocessWindow.cxx
index fe4b2eff5d..5ea85c3cc9 100644
--- a/panda/src/display/subprocessWindow.cxx
+++ b/panda/src/display/subprocessWindow.cxx
@@ -18,6 +18,8 @@
 #include "graphicsEngine.h"
 #include "config_display.h"
 #include "nativeWindowHandle.h"
+#include "mouseButton.h"
+#include "throw_event.h"
 
 using std::string;
 
diff --git a/panda/src/express/CMakeLists.txt b/panda/src/express/CMakeLists.txt
index 2d2929fed3..e6d3e11482 100644
--- a/panda/src/express/CMakeLists.txt
+++ b/panda/src/express/CMakeLists.txt
@@ -136,7 +136,7 @@ add_component_library(p3express SYMBOL BUILDING_PANDA_EXPRESS
   ${P3EXPRESS_SOURCES} ${P3EXPRESS_HEADERS})
 
 target_link_libraries(p3express p3pandabase p3dtoolconfig p3dtool
-  PKG::TAR PKG::ZLIB)
+  PKG::TAR PKG::ZLIB PKG::OPENSSL)
 target_interrogate(p3express ALL EXTENSIONS ${P3EXPRESS_IGATEEXT})
 
 if(WIN32)
diff --git a/panda/src/osxdisplay/CMakeLists.txt b/panda/src/osxdisplay/CMakeLists.txt
index 98f3f6d57b..a26fc51123 100644
--- a/panda/src/osxdisplay/CMakeLists.txt
+++ b/panda/src/osxdisplay/CMakeLists.txt
@@ -13,8 +13,9 @@ set(P3OSXDISPLAY_SOURCES
     osxGraphicsBuffer.cxx)
 
 composite_sources(p3osxdisplay P3OSXDISPLAY_SOURCES)
-add_library(p3osxdisplay ${P3OSXDISPLAY_HEADERS} ${P3OSXDISPLAY_SOURCES})
-set_target_properties(p3osxdisplay PROPERTIES DEFINE_SYMBOL BUILDING_PANDA_OSXDISPLAY)
+add_component_library(p3osxdisplay SYMBOL BUILDING_PANDA_OSXDISPLAY
+  ${P3OSXDISPLAY_HEADERS} ${P3OSXDISPLAY_SOURCES})
+set_target_properties(p3osxdisplay PROPERTIES COMPILE_FLAGS "-ObjC++")
 target_link_libraries(p3osxdisplay p3display p3putil p3glgsg)
 
 # Frameworks:
@@ -27,4 +28,6 @@ target_link_libraries(p3osxdisplay
   ${APPLICATIONSERVICES_LIBRARY} ${CARBON_LIBRARY} ${AGL_LIBRARY}
   ${CORESERVICES_LIBRARY} ${COCOA_LIBRARY})
 
-install(TARGETS p3osxdisplay DESTINATION lib)
+if(NOT BUILD_METALIBS)
+  install(TARGETS p3osxdisplay DESTINATION lib)
+endif()