1 files changed, 103 insertions, 0 deletions
diff --git a/runtime/Makefile b/runtime/Makefile
new file mode 100644
index 0000000000..e0908e4fc6
--- /dev/null
+++ b/runtime/Makefile
@@ -0,0 +1,103 @@
+##===- clang/runtime/Makefile ------------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+#
+# This file defines support for building the Clang runtime libraries (which are
+# implemented by compiler-rt) and placing them in the proper locations in the
+# Clang resources directory (i.e., where the driver expects them).
+#
+##===----------------------------------------------------------------------===##
+
+CLANG_LEVEL := ..
+include $(CLANG_LEVEL)/Makefile
+
+CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
+	$(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))
+
+ResourceDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION)
+PROJ_resources := $(DESTDIR)$(PROJ_prefix)/lib/clang/$(CLANG_VERSION)
+
+ResourceLibDir := $(ResourceDir)/lib
+PROJ_resources_lib := $(PROJ_resources)/lib
+
+# Expect compiler-rt to be in llvm/projects/compiler-rt
+COMPILERRT_SRC_ROOT := $(LLVM_SRC_ROOT)/projects/compiler-rt
+
+ifndef CLANG_NO_RUNTIME
+ifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK)
+
+# Select the compiler-rt configuration to use, and install directory.
+#
+# FIXME: Eventually, we want some kind of configure support for this. We want to
+# build/install runtime libraries for as many targets as clang was configured to
+# support.
+RuntimeDirs :=
+ifeq ($(OS),Darwin)
+RuntimeDirs += darwin
+RuntimeLibrary.darwin.Configs = 10.4 armv6 cc_kext
+endif
+
+# Rule to build the compiler-rt libraries we need.
+#
+# We build all the libraries in a single shot to avoid recursive make as much as
+# possible.
+BuildRuntimeLibraries:
+	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
+	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
+	  ProjObjRoot=$(PROJ_OBJ_DIR) \
+	  $(RuntimeDirs:%=clang_%)
+.PHONY: BuildRuntimeLibraries
+CleanRuntimeLibraries:
+	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
+	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
+	  ProjObjRoot=$(PROJ_OBJ_DIR) \
+	  clean
+.PHONY: CleanRuntimeLibraries
+
+$(PROJ_resources_lib):
+	$(Verb) $(MKDIR) $@
+
+# Expand rules for copying/installing each individual library. We can't use
+# implicit rules here because we need to match against multiple things.
+define RuntimeLibraryTemplate
+$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries
+	@true
+.PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a
+
+# Rule to copy the libraries to their resource directory location.
+$(ResourceLibDir)/$1/libclang_rt.%.a: \
+		$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \
+		$(ResourceLibDir)/$1/.dir
+	$(Echo) Copying runtime library $1/$$* to build dir
+	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@
+RuntimeLibrary.$1: \
+		$(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%.a)
+.PHONY: RuntimeLibrary.$1
+
+$(PROJ_resources_lib)/$1: $(PROJ_resources_lib)
+	$(Verb) $(MKDIR) $$@
+
+$(PROJ_resources_lib)/$1/libclang_rt.%.a: \
+		$(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1
+	$(Echo) Installing compiler runtime library: $1/$$*
+	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
+
+# Rule to install runtime libraries.
+RuntimeLibraryInstall.$1: \
+		$(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%.a)
+.PHONY: RuntimeLibraryInstall.$1
+endef
+$(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib))))
+
+# Hook into the standard Makefile rules.
+all-local:: $(RuntimeDirs:%=RuntimeLibrary.%)
+install-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%)
+clean-local:: CleanRuntimeLibraries
+
+endif
+endif