1SubDirs := lib
2
3# Set default rule before anything else.
4all: help
5
6include make/config.mk
7include make/util.mk
8# If SRCROOT is defined, assume we are doing an Apple style build. We should be
9# able to use RC_XBS for this but that is unused during "make installsrc".
10ifdef SRCROOT
11  include make/AppleBI.mk
12endif
13
14# Make sure we don't build with a missing ProjObjRoot.
15ifeq ($(ProjObjRoot),)
16$(error Refusing to build with empty ProjObjRoot variable)
17endif
18
19##############
20
21###
22# Rules
23
24###
25# Top level targets
26
27# FIXME: Document the available subtargets.
28help:
29	@echo "usage: make [{VARIABLE=VALUE}*] target"
30	@echo
31	@echo "User variables:"
32	@echo "  VERBOSE=1: Use to show all commands [default=0]"
33	@echo
34	@echo "Available targets:"
35	@echo "  <platform name>: build the libraries for 'platform'"
36	@echo "  clean:           clean all configurations"
37	@echo "  test:            run unit tests"
38	@echo
39	@echo "  info-platforms:  list available platforms"
40	@echo "  help-devel:      print additional help for developers"
41	@echo
42
43help-devel: help
44	@echo "Development targets:"
45	@echo "  <platform name>-<config name>:"
46	@echo "    build the libraries for a single platform config"
47	@echo "  <platform name>-<config name>-<arch name>:"
48	@echo "    build the libraries for a single config and arch"
49	@echo "  info-functions: list available compiler-rt functions"
50	@echo "  help-hidden: print help for Makefile debugging"
51	@echo
52
53help-hidden: help-devel
54	@echo "Debugging variables:"
55	@echo "  DEBUGMAKE=1: enable some Makefile logging [default=]"
56	@echo "           =2: enable more Makefile logging"
57	@echo
58	@echo "Debugging targets:"
59	@echo "  make-print-FOO: print information on the variable 'FOO'"
60	@echo
61
62info-functions:
63	@echo "compiler-rt Available Functions"
64	@echo
65	@echo "All Functions: $(AvailableFunctions)"
66	@$(foreach fn,$(AvailableFunctions),\
67	  printf "  %-20s - available in (%s)\n" $(fn)\
68	    "$(foreach key,$(AvailableIn.$(fn)),$($(key).Dir))";)
69
70info-platforms:
71	@echo "compiler-rt Available Platforms"
72	@echo
73	@echo "Platforms:"
74	@$(foreach key,$(PlatformKeys),\
75	  printf "  %s - from '%s'\n" $($(key).Name) $($(key).Path);\
76	  printf "    %s\n" "$($(key).Description)";\
77	  printf "    Configurations: %s\n\n" "$($(key).Configs)";)
78
79# Provide default clean target which is extended by other templates.
80.PHONY: clean
81clean::
82
83# Test
84.PHONY: test
85test:
86	cd test/Unit && ./test
87
88###
89# Directory handling magic.
90
91# Create directories as needed, and timestamp their creation.
92%/.dir:
93	$(Summary) "  MKDIR:     $*"
94	$(Verb) $(MKDIR) $* > /dev/null
95	$(Verb) $(DATE) > $@
96
97# Remove directories
98%/.remove:
99	$(Verb) $(RM) -r $*
100
101###
102# Include child makefile fragments
103
104Dir := .
105include make/subdir.mk
106include make/lib_info.mk
107include make/lib_util.mk
108include make/lib_platforms.mk
109
110###
111# Define Platform Rules
112
113define PerPlatform_template
114$(call Set,Tmp.Key,$(1))
115$(call Set,Tmp.Name,$($(Tmp.Key).Name))
116$(call Set,Tmp.Configs,$($(Tmp.Key).Configs))
117$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name))
118
119# Top-Level Platform Target
120$(Tmp.Name):: $(Tmp.Configs:%=$(Tmp.ObjPath)/%/libcompiler_rt.a)
121.PHONY: $(Tmp.Name)
122
123clean::
124	$(Verb) rm -rf $(Tmp.ObjPath)
125
126# Per-Config Libraries
127$(foreach config,$(Tmp.Configs),\
128  $(call PerPlatformConfig_template,$(config)))
129endef
130
131define PerPlatformConfig_template
132$(call Set,Tmp.Config,$(1))
133$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config))
134
135# Compute the archs to build, depending on whether this is a universal build or
136# not.
137$(call Set,Tmp.ArchsToBuild,\
138  $(if $(call IsDefined,$(Tmp.Key).UniversalArchs),\
139       $(strip \
140         $(or $($(Tmp.Key).UniversalArchs.$(Tmp.Config)),\
141              $($(Tmp.Key).UniversalArchs))),\
142       $(call VarOrDefault,$(Tmp.Key).Arch.$(Tmp.Config),$($(Tmp.Key).Arch))))
143
144# Copy or lipo to create the per-config library.
145$(call Set,Tmp.Inputs,$(Tmp.ArchsToBuild:%=$(Tmp.ObjPath)/%/libcompiler_rt.a))
146$(Tmp.ObjPath)/libcompiler_rt.a: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
147	$(Summary) "  FINAL-ARCHIVE: $(Tmp.Name)/$(Tmp.Config): $$@"
148	-$(Verb) $(RM) $$@
149	$(if $(call streq,1,$(words $(Tmp.ArchsToBuild))), \
150	  $(Verb) $(CP) $(Tmp.Inputs) $$@, \
151	  $(Verb) $(LIPO) -create -output $$@ $(Tmp.Inputs))
152.PRECIOUS: $(Tmp.ObjPath)/.dir
153
154# Per-Config Targets
155$(Tmp.Name)-$(Tmp.Config):: $(Tmp.ObjPath)/libcompiler_rt.a
156.PHONY: $(Tmp.Name)-$(Tmp.Config)
157
158# Per-Config-Arch Libraries
159$(foreach arch,$(Tmp.ArchsToBuild),\
160  $(call PerPlatformConfigArch_template,$(arch)))
161endef
162
163define PerPlatformConfigArch_template
164$(call Set,Tmp.Arch,$(1))
165$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch))
166$(call Set,Tmp.Functions,$(strip \
167  $(call GetCNAVar,FUNCTIONS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
168$(call Set,Tmp.Optimized,$(strip \
169  $(call GetCNAVar,OPTIMIZED,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
170$(call Set,Tmp.AR,$(strip \
171  $(call GetCNAVar,AR,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
172$(call Set,Tmp.ARFLAGS,$(strip \
173  $(call GetCNAVar,ARFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
174$(call Set,Tmp.RANLIB,$(strip \
175  $(call GetCNAVar,RANLIB,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
176$(call Set,Tmp.RANLIBFLAGS,$(strip \
177  $(call GetCNAVar,RANLIBFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
178
179# Compute the object inputs for this library.
180$(call Set,Tmp.Inputs,\
181  $(foreach fn,$(sort $(Tmp.Functions)),\
182    $(call Set,Tmp.FnDir,\
183      $(call SelectFunctionDir,$(Tmp.Config),$(Tmp.Arch),$(fn),$(Tmp.Optimized)))\
184    $(Tmp.ObjPath)/$(Tmp.FnDir)/$(fn).o))
185$(Tmp.ObjPath)/libcompiler_rt.a: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
186	$(Summary) "  ARCHIVE:   $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$@"
187	-$(Verb) $(RM) $$@
188	$(Verb) $(Tmp.AR) $(Tmp.ARFLAGS) $$@ $(Tmp.Inputs)
189	$(Verb) $(Tmp.RANLIB) $(Tmp.RANLIBFLAGS) $$@
190.PRECIOUS: $(Tmp.ObjPath)/.dir
191
192# Per-Config-Arch Targets
193$(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch):: $(Tmp.ObjPath)/libcompiler_rt.a
194.PHONY: $(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch)
195
196# Per-Config-Arch-SubDir Objects
197$(foreach key,$(SubDirKeys),\
198  $(call PerPlatformConfigArchSubDir_template,$(key)))
199endef
200
201define PerPlatformConfigArchSubDir_template
202$(call Set,Tmp.SubDirKey,$(1))
203$(call Set,Tmp.SubDir,$($(Tmp.SubDirKey).Dir))
204$(call Set,Tmp.SrcPath,$(ProjSrcRoot)/$(Tmp.SubDir))
205$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch)/$(Tmp.SubDirKey))
206$(call Set,Tmp.Dependencies,$($(Tmp.SubDirKey).Dependencies))
207$(call Set,Tmp.CC,$(strip \
208  $(call GetCNAVar,CC,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
209$(call Set,Tmp.CFLAGS,$(strip \
210  $(if $(call IsDefined,$(Tmp.Key).UniversalArchs),-arch $(Tmp.Arch),)\
211  $(if $(call streq,$($(Tmp.Key).VISIBILITY_HIDDEN),1),\
212       -fvisibility=hidden -DVISIBILITY_HIDDEN,)\
213  $(call GetCNAVar,CFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
214
215$(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.s $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
216	$(Summary) "  ASSEMBLE:  $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
217	$(Verb) $(Tmp.CC) $(Tmp.CFLAGS)  -c -o $$@ $$<
218$(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.S $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
219	$(Summary) "  ASSEMBLE:  $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
220	$(Verb) $(Tmp.CC) $(Tmp.CFLAGS) -c -o $$@ $$<
221$(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.c $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
222	$(Summary) "  COMPILE:   $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
223	$(Verb) $(Tmp.CC) $(Tmp.CFLAGS) -c -o $$@ $$<
224.PRECIOUS: $(Tmp.ObjPath)/.dir
225
226endef
227
228# Run templates.
229$(foreach key,$(PlatformKeys),\
230  $(eval $(call PerPlatform_template,$(key))))
231
232###
233
234ifneq ($(DEBUGMAKE),)
235  $(info MAKE: Done processing Makefile)
236  $(info  )
237endif
238