--- a/make-rules/gem.mk Wed Feb 10 16:31:24 2016 -0800
+++ b/make-rules/gem.mk Wed Feb 10 22:10:43 2016 -0500
@@ -32,11 +32,16 @@
# Some gems projects have to be built using rake
# Allow GEM build/install commands to be overwritten
# to account for possible differences
-GEM_BUILD_ACTION=(cd $(@D); $(GEM) build $(GEMSPEC))
+GEM_BUILD_ACTION=(cd $(@D); $(GEM) build $(GEM_BUILD_ARGS) $(GEMSPEC))
+
+ifeq ($(firstword $(subst .,$(space),$(RUBY_VERSION))),2)
+# gem install 2.x does docs differently. Continue to generate both types
+GEM_INSTALL_ARGS=--document rdoc,ri
+endif
GEM_INSTALL_ACTION=\
$(GEM) install -V --local --install-dir $(PROTO_DIR)/$(VENDOR_GEM_DIR) \
- --bindir $(PROTO_DIR)/$(VENDOR_GEM_DIR)/bin --force \
+ --bindir $(PROTO_DIR)/$(VENDOR_GEM_DIR)/bin --force $(GEM_INSTALL_ARGS) \
$(@D)/$(COMPONENT_ARCHIVE)
$(BUILD_DIR)/%/.built: $(SOURCE_DIR)/.prep