Mac OS build on Travis CI.

.travis.yml

@@ -1,3 +1,6 @@
+os:
+  - linux
+  - osx
 language: c
 dist: trusty
 sudo: required
@@ -5,6 +8,12 @@ env:
   - EMULATOR=simh BASICS=yes
   - EMULATOR=klh10 BASICS=yes
   - EMULATOR=sims BASICS=yes
+matrix:
+  exclude:
+    - os: osx
+      env: EMULATOR=klh10 BASICS=yes
+    - os: osx
+      env: EMULATOR=sims BASICS=yes
 install: sh -ex build/dependencies.sh install_${TRAVIS_OS_NAME:-linux}
 script: make check-dirs all
 deploy:

build/dependencies.sh

@@ -16,4 +16,8 @@ install_linux() {
     esac
 }
 
+install_osx() {
+    true
+}
+
 "$1"