Makefile revision ac141e61ff36ed04d5314f602536a8e4fe9a122b 
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 := $(LLVM_SRC_ROOT)/projects/compiler-rt
30
31ifndef CLANG_NO_RUNTIME
32ifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK)
33
34# Select the compiler-rt configuration to use, and install directory.
35#
36# FIXME: Eventually, we want some kind of configure support for this. We want to
37# build/install runtime libraries for as many targets as clang was configured to
38# support.
39RuntimeDirs :=
40ifeq ($(OS),Darwin)
41RuntimeDirs += darwin
42RuntimeLibrary.darwin.Configs = 10.4 armv6 cc_kext
43endif
44
45# Rule to build the compiler-rt libraries we need.
46#
47# We build all the libraries in a single shot to avoid recursive make as much as
48# possible.
49BuildRuntimeLibraries:
50	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
51	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
52	  ProjObjRoot=$(PROJ_OBJ_DIR) \
53	  $(RuntimeDirs:%=clang_%)
54.PHONY: BuildRuntimeLibraries
55CleanRuntimeLibraries:
56	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
57	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
58	  ProjObjRoot=$(PROJ_OBJ_DIR) \
59	  clean
60.PHONY: CleanRuntimeLibraries
61
62$(PROJ_resources_lib):
63	$(Verb) $(MKDIR) $@
64
65# Expand rules for copying/installing each individual library. We can't use
66# implicit rules here because we need to match against multiple things.
67define RuntimeLibraryTemplate
68$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries
69	@true
70.PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a
71
72# Rule to copy the libraries to their resource directory location.
73$(ResourceLibDir)/$1/libclang_rt.%.a: \
74		$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \
75		$(ResourceLibDir)/$1/.dir
76	$(Echo) Copying runtime library $1/$$* to build dir
77	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@
78RuntimeLibrary.$1: \
79		$(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%.a)
80.PHONY: RuntimeLibrary.$1
81
82$(PROJ_resources_lib)/$1: $(PROJ_resources_lib)
83	$(Verb) $(MKDIR) $$@
84
85$(PROJ_resources_lib)/$1/libclang_rt.%.a: \
86		$(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1
87	$(Echo) Installing compiler runtime library: $1/$$*
88	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
89
90# Rule to install runtime libraries.
91RuntimeLibraryInstall.$1: \
92		$(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%.a)
93.PHONY: RuntimeLibraryInstall.$1
94endef
95$(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib))))
96
97# Hook into the standard Makefile rules.
98all-local:: $(RuntimeDirs:%=RuntimeLibrary.%)
99install-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%)
100clean-local:: CleanRuntimeLibraries
101
102endif
103endif
104