add basic .travis.yml

.travis.yml

@@ -0,0 +1,28 @@
+language: c
+script: make && make test # no ./configure
+
+# Uncomment me if this gets annoying
+#
+# notifications: 
+#   email: false 
+
+addons:
+  apt:
+    packages:
+    - libgmp3-dev
+    - libsigsegv-dev
+    - openssl
+    - libssl-dev
+    - libncurses5-dev
+    - make
+    - exuberant-ctags
+    - automake
+    - autoconf
+    - libtool
+    - g++
+    - ragel
+    - cmake
+    - re2c
+    - libcurl4-gnutls-dev
+    - python
+

Makefile

@@ -436,6 +436,10 @@ $(BIN)/urbit: $(LIBCOMMONMARK) $(VERE_OFILES) $(LIBED25519) $(LIBANACHRONISM) $(
 	@$(CLD) $(CLDOSFLAGS) -o $(BIN)/urbit $(VERE_OFILES) $(LIBED25519) $(LIBANACHRONISM) $(LIBS) $(LIBCOMMONMARK) $(LIBSCRYPT) $(LIBSOFTFLOAT)
 endif
 
+# This should start a comet or something
+test:
+	@echo "FIXME no tests defined"
+
 tags: ctags etags gtags cscope
 
 ctags:
@@ -479,4 +483,4 @@ distclean: clean
 	$(MAKE) -C outside/scrypt clean
 	$(MAKE) -C outside/softfloat-3/build/Linux-386-GCC clean
 
-.PHONY: clean debbuild debinstalldistclean etags osxpackage tags
+.PHONY: clean debbuild debinstalldistclean etags osxpackage tags test

README.md

@@ -9,6 +9,8 @@ If you're doing development on Urbit, keep reading.
 
 # Build instructions
 
+[![Build Status](https://travis-ci.org/urbit/urbit.svg?branch=maint-0.4)](https://travis-ci.org/urbit/urbit)
+
 ## External dependencies
 
 `vere`, the Urbit virtual machine, depends on the following: