Makefile revision db0ab63998eb9aad0ead03d3f76f095f9b1eb036 
1##===- clang/runtime/Makefile ------------------------------*- Makefile -*-===##
2#
3#                     The LLVM Compiler Infrastructure
4#
5# This file is distributed under the University of Illinois Open Source
6# License. See LICENSE.TXT for details.
7#
8##===----------------------------------------------------------------------===##
9#
10# This file defines support for building the Clang runtime libraries (which are
11# implemented by compiler-rt) and placing them in the proper locations in the
12# Clang resources directory (i.e., where the driver expects them).
13#
14##===----------------------------------------------------------------------===##
15
16CLANG_LEVEL := ..
17include $(CLANG_LEVEL)/Makefile
18
19CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
20	$(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))
21
22ResourceDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION)
23PROJ_resources := $(DESTDIR)$(PROJ_prefix)/lib/clang/$(CLANG_VERSION)
24
25ResourceLibDir := $(ResourceDir)/lib
26PROJ_resources_lib := $(PROJ_resources)/lib
27
28# Expect compiler-rt to be in llvm/projects/compiler-rt
29COMPILERRT_SRC_ROOT := $(LLVM_SRC_ROOT)/projects/compiler-rt
30
31# Additional flags to pass to Clang.
32CLANG_CCFLAGS := -no-integrated-as
33
34ifneq ($(CLANG_NO_RUNTIME),1)
35ifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK)
36
37# Select the compiler-rt configuration to use, and install directory.
38#
39# FIXME: Eventually, we want some kind of configure support for this. We want to
40# build/install runtime libraries for as many targets as clang was configured to
41# support.
42RuntimeDirs :=
43ifeq ($(OS),Darwin)
44RuntimeDirs += darwin
45RuntimeLibrary.darwin.Configs = eprintf 10.4 armv6 cc_kext
46
47# On Darwin, fake Clang into using the iOS assembler (since compiler-rt wants to
48# build ARM bits).
49ifeq ($(OS),Darwin)
50CLANG_CCFLAGS += -ccc-install-dir \
51	/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/
52endif
53endif
54
55# Rule to build the compiler-rt libraries we need.
56#
57# We build all the libraries in a single shot to avoid recursive make as much as
58# possible.
59BuildRuntimeLibraries:
60	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
61	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
62	  ProjObjRoot=$(PROJ_OBJ_DIR) \
63	  CC="$(ToolDir)/clang $(CLANG_CCFLAGS)" \
64	  $(RuntimeDirs:%=clang_%)
65.PHONY: BuildRuntimeLibraries
66CleanRuntimeLibraries:
67	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
68	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
69	  ProjObjRoot=$(PROJ_OBJ_DIR) \
70	  clean
71.PHONY: CleanRuntimeLibraries
72
73$(PROJ_resources_lib):
74	$(Verb) $(MKDIR) $@
75
76# Expand rules for copying/installing each individual library. We can't use
77# implicit rules here because we need to match against multiple things.
78define RuntimeLibraryTemplate
79$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries
80	@true
81.PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a
82
83# Rule to copy the libraries to their resource directory location.
84$(ResourceLibDir)/$1/libclang_rt.%.a: \
85		$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \
86		$(ResourceLibDir)/$1/.dir
87	$(Echo) Copying runtime library $1/$$* to build dir
88	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@
89RuntimeLibrary.$1: \
90		$(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%.a)
91.PHONY: RuntimeLibrary.$1
92
93$(PROJ_resources_lib)/$1: $(PROJ_resources_lib)
94	$(Verb) $(MKDIR) $$@
95
96$(PROJ_resources_lib)/$1/libclang_rt.%.a: \
97		$(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1
98	$(Echo) Installing compiler runtime library: $1/$$*
99	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
100
101# Rule to install runtime libraries.
102RuntimeLibraryInstall.$1: \
103		$(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%.a)
104.PHONY: RuntimeLibraryInstall.$1
105endef
106$(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib))))
107
108# Hook into the standard Makefile rules.
109all-local:: $(RuntimeDirs:%=RuntimeLibrary.%)
110install-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%)
111clean-local:: CleanRuntimeLibraries
112
113endif
114endif
115