Makefile revision 880efcbf16e685a0e461cfcf4d01dbda55449421 
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 := $(LLVM_SRC_ROOT)/projects/compiler-rt
30
31ifneq ($(CLANG_NO_RUNTIME),1)
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 = eprintf 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=$(PROJ_OBJ_DIR) \
53	  CC="$(ToolDir)/clang -no-integrated-as" \
54	  $(RuntimeDirs:%=clang_%)
55.PHONY: BuildRuntimeLibraries
56CleanRuntimeLibraries:
57	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
58	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
59	  ProjObjRoot=$(PROJ_OBJ_DIR) \
60	  clean
61.PHONY: CleanRuntimeLibraries
62
63$(PROJ_resources_lib):
64	$(Verb) $(MKDIR) $@
65
66# Expand rules for copying/installing each individual library. We can't use
67# implicit rules here because we need to match against multiple things.
68define RuntimeLibraryTemplate
69$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries
70	@true
71.PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a
72
73# Rule to copy the libraries to their resource directory location.
74$(ResourceLibDir)/$1/libclang_rt.%.a: \
75		$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \
76		$(ResourceLibDir)/$1/.dir
77	$(Echo) Copying runtime library $1/$$* to build dir
78	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@
79RuntimeLibrary.$1: \
80		$(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%.a)
81.PHONY: RuntimeLibrary.$1
82
83$(PROJ_resources_lib)/$1: $(PROJ_resources_lib)
84	$(Verb) $(MKDIR) $$@
85
86$(PROJ_resources_lib)/$1/libclang_rt.%.a: \
87		$(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1
88	$(Echo) Installing compiler runtime library: $1/$$*
89	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
90
91# Rule to install runtime libraries.
92RuntimeLibraryInstall.$1: \
93		$(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%.a)
94.PHONY: RuntimeLibraryInstall.$1
95endef
96$(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib))))
97
98# Hook into the standard Makefile rules.
99all-local:: $(RuntimeDirs:%=RuntimeLibrary.%)
100install-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%)
101clean-local:: CleanRuntimeLibraries
102
103endif
104endif
105