Add doxygen support
 - Stolen from LLVM with minor modifications



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54103 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000..4796c2a
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,94 @@
+##===- docs/Makefile ---------------------------------------*- Makefile -*-===##
+# 
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+# 
+##===----------------------------------------------------------------------===##
+
+LEVEL      := ../../..
+DIRS       := 
+
+ifdef BUILD_FOR_WEBSITE
+PROJ_OBJ_DIR = .
+DOXYGEN = doxygen
+
+$(PROJ_OBJ_DIR)/doxygen.cfg: doxygen.cfg.in
+	cat $< | sed \
+	  -e 's/@abs_top_srcdir@/../g' \
+	  -e 's/@DOT@/dot/g' \
+	  -e 's/@PACKAGE_VERSION@/mainline/' \
+	  -e 's/@abs_top_builddir@/../g' > $@
+endif
+
+include $(LEVEL)/Makefile.common
+
+HTML       := $(wildcard $(PROJ_SRC_DIR)/*.html) \
+              $(wildcard $(PROJ_SRC_DIR)/*.css)
+IMAGES     := $(wildcard $(PROJ_SRC_DIR)/img/*.*)
+DOXYFILES  := doxygen.cfg.in doxygen.css doxygen.footer doxygen.header \
+              doxygen.intro
+EXTRA_DIST := $(HTML) $(DOXYFILES) llvm.css CommandGuide img
+
+.PHONY: install-html install-doxygen doxygen generated
+
+install_targets := install-html
+ifeq ($(ENABLE_DOXYGEN),1)
+install_targets += install-doxygen
+endif
+install-local:: $(install_targets)
+
+# Live documentation is generated for the web site using this target:
+# 'make generated BUILD_FOR_WEBSITE=1'
+generated:: doxygen
+
+install-html: $(PROJ_OBJ_DIR)/html.tar.gz
+	$(Echo) Installing HTML documentation
+	$(Verb) $(MKDIR) $(PROJ_docsdir)/html
+	$(Verb) $(MKDIR) $(PROJ_docsdir)/html/img
+	$(Verb) $(DataInstall) $(HTML) $(PROJ_docsdir)/html
+	$(Verb) $(DataInstall) $(IMAGES) $(PROJ_docsdir)/html/img
+	$(Verb) $(DataInstall) $(PROJ_OBJ_DIR)/html.tar.gz $(PROJ_docsdir)
+
+$(PROJ_OBJ_DIR)/html.tar.gz: $(HTML)
+	$(Echo) Packaging HTML documentation
+	$(Verb) $(RM) -rf $@ $(PROJ_OBJ_DIR)/html.tar
+	$(Verb) cd $(PROJ_SRC_DIR) && \
+	  $(TAR) cf $(PROJ_OBJ_DIR)/html.tar *.html
+	$(Verb) $(GZIP) $(PROJ_OBJ_DIR)/html.tar
+
+install-doxygen: doxygen
+	$(Echo) Installing doxygen documentation
+	$(Verb) $(MKDIR) $(PROJ_docsdir)/html/doxygen
+	$(Verb) $(DataInstall) $(PROJ_OBJ_DIR)/doxygen.tar.gz $(PROJ_docsdir)
+	$(Verb) cd $(PROJ_OBJ_DIR)/doxygen && \
+	  $(FIND) . -type f -exec \
+	    $(DataInstall) {} $(PROJ_docsdir)/html/doxygen \;
+
+doxygen: regendoc $(PROJ_OBJ_DIR)/doxygen.tar.gz
+
+regendoc:
+	$(Echo) Building doxygen documentation
+	$(Verb) if test -e $(PROJ_OBJ_DIR)/doxygen ; then \
+	  $(RM) -rf $(PROJ_OBJ_DIR)/doxygen ; \
+	fi
+	$(Verb) $(DOXYGEN) $(PROJ_OBJ_DIR)/doxygen.cfg
+
+$(PROJ_OBJ_DIR)/doxygen.tar.gz: $(DOXYFILES) $(PROJ_OBJ_DIR)/doxygen.cfg
+	$(Echo) Packaging doxygen documentation
+	$(Verb) $(RM) -rf $@ $(PROJ_OBJ_DIR)/doxygen.tar
+	$(Verb) $(TAR) cf $(PROJ_OBJ_DIR)/doxygen.tar doxygen
+	$(Verb) $(GZIP) $(PROJ_OBJ_DIR)/doxygen.tar
+	$(Verb) $(CP) $(PROJ_OBJ_DIR)/doxygen.tar.gz $(PROJ_OBJ_DIR)/doxygen/html/
+
+userloc: $(LLVM_SRC_ROOT)/docs/userloc.html
+
+$(LLVM_SRC_ROOT)/docs/userloc.html:
+	$(Echo) Making User LOC Table
+	$(Verb) cd $(LLVM_SRC_ROOT) ; ./utils/userloc.pl -details -recurse \
+	  -html lib include tools runtime utils examples autoconf test > docs/userloc.html
+
+uninstall-local::
+	$(Echo) Uninstalling Documentation
+	$(Verb) $(RM) -rf $(PROJ_docsdir)