Makefile

SubDirs := lib

# Set default rule before anything else.
all: help

include make/config.mk
include make/util.mk
# If SRCROOT is defined, assume we are doing an Apple style build. We should be
# able to use RC_XBS for this but that is unused during "make installsrc".
ifdef SRCROOT
 include make/AppleBI.mk
endif

# Make sure we don't build with a missing ProjObjRoot.
ifeq ($(ProjObjRoot),)
$(error Refusing to build with empty ProjObjRoot variable)
endif

##############

###
# Rules

###
# Top level targets

# FIXME: Document the available subtargets.
help:
@echo "usage: make [{VARIABLE=VALUE}*] target"
@echo
@echo "User variables:"
@echo " VERBOSE=1: Use to show all commands [default=0]"
@echo
@echo "Available targets:"
@echo " <platform name>: build the libraries for 'platform'"
@echo " clean: clean all configurations"
@echo " test: run unit tests"
@echo
@echo " info-platforms: list available platforms"
@echo " help-devel: print additional help for developers"
@echo

help-devel: help
@echo "Development targets:"
@echo " <platform name>-<config name>:"
@echo " build the libraries for a single platform config"
@echo " <platform name>-<config name>-<arch name>:"
@echo " build the libraries for a single config and arch"
@echo " info-functions: list available compiler-rt functions"
@echo " help-hidden: print help for Makefile debugging"
@echo

help-hidden: help-devel
@echo "Debugging variables:"
@echo " DEBUGMAKE=1: enable some Makefile logging [default=]"
@echo " =2: enable more Makefile logging"
@echo
@echo "Debugging targets:"
@echo " make-print-FOO: print information on the variable 'FOO'"
@echo

info-functions:
@echo "compiler-rt Available Functions"
@echo
@echo "All Functions: $(AvailableFunctions)"
@$(foreach fn,$(AvailableFunctions),\
 printf " %-20s - available in (%s)\n" $(fn)\
 "$(foreach key,$(AvailableIn.$(fn)),$($(key).Dir))";)

info-platforms:
@echo "compiler-rt Available Platforms"
@echo
@echo "Platforms:"
@$(foreach key,$(PlatformKeys),\
 printf " %s - from '%s'\n" $($(key).Name) $($(key).Path);\
 printf " %s\n" "$($(key).Description)";\
 printf " Configurations: %s\n\n" "$($(key).Configs)";)

# Provide default clean target which is extended by other templates.
.PHONY: clean
clean::

# Test
.PHONY: test
test:
cd test/Unit && ./test

###
# Directory handling magic.

# Create directories as needed, and timestamp their creation.
%/.dir:
$(Summary) " MKDIR: $*"
$(Verb) $(MKDIR) $* > /dev/null
$(Verb) echo 'Created.' > $@

# Remove directories
%/.remove:
$(Verb) $(RM) -r $*

###
# Include child makefile fragments

Dir := .
include make/subdir.mk
include make/lib_info.mk
include make/lib_util.mk
include make/lib_platforms.mk

###
# Define Platform Rules

define PerPlatform_template
$(call Set,Tmp.Key,$(1))
$(call Set,Tmp.Name,$($(Tmp.Key).Name))
$(call Set,Tmp.Configs,$($(Tmp.Key).Configs))
$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name))

# Top-Level Platform Target
$(Tmp.Name):: $(Tmp.Configs:%=$(Tmp.Name)-%)
.PHONY: $(Tmp.Name)

clean::
$(Verb) rm -rf $(Tmp.ObjPath)

# Per-Config Libraries
$(foreach config,$(Tmp.Configs),\
 $(call PerPlatformConfig_template,$(config)))
endef

define PerPlatformConfig_template
$(call Set,Tmp.Config,$(1))
$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config))
$(call Set,Tmp.SHARED_LIBRARY,$(strip \
 $(call GetCNAVar,SHARED_LIBRARY,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.SHARED_LIBRARY_SUFFIX,$(strip \
 $(call GetCNAVar,SHARED_LIBRARY_SUFFIX,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))

# Compute the library suffix.
$(if $(call streq,1,$(Tmp.SHARED_LIBRARY)),
 $(call Set,Tmp.LibrarySuffix,$(Tmp.SHARED_LIBRARY_SUFFIX)),
 $(call Set,Tmp.LibrarySuffix,a))

# Compute the archs to build, depending on whether this is a universal build or
# not.
$(call Set,Tmp.ArchsToBuild,\
 $(if $(call IsDefined,$(Tmp.Key).UniversalArchs),\
 $(strip \
 $(or $($(Tmp.Key).UniversalArchs.$(Tmp.Config)),\
 $($(Tmp.Key).UniversalArchs))),\
 $(call VarOrDefault,$(Tmp.Key).Arch.$(Tmp.Config),$($(Tmp.Key).Arch))))

# Copy or lipo to create the per-config library.
$(call Set,Tmp.Inputs,$(Tmp.ArchsToBuild:%=$(Tmp.ObjPath)/%/libcompiler_rt.$(Tmp.LibrarySuffix)))
$(Tmp.ObjPath)/libcompiler_rt.$(Tmp.LibrarySuffix): $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
$(Summary) " FINAL-ARCHIVE: $(Tmp.Name)/$(Tmp.Config): $$@"
-$(Verb) $(RM) $$@
$(if $(call streq,1,$(words $(Tmp.ArchsToBuild))), \
 $(Verb) $(CP) $(Tmp.Inputs) $$@, \
 $(Verb) $(LIPO) -create -output $$@ $(Tmp.Inputs))
.PRECIOUS: $(Tmp.ObjPath)/.dir

# Per-Config Targets
$(Tmp.Name)-$(Tmp.Config):: $(Tmp.ObjPath)/libcompiler_rt.$(Tmp.LibrarySuffix)
.PHONY: $(Tmp.Name)-$(Tmp.Config)

# Per-Config-Arch Libraries
$(foreach arch,$(Tmp.ArchsToBuild),\
 $(call PerPlatformConfigArch_template,$(arch)))
endef

define PerPlatformConfigArch_template
$(call Set,Tmp.Arch,$(1))
$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch))
$(call Set,Tmp.Functions,$(strip \
 $(AlwaysRequiredModules) \
 $(call GetCNAVar,FUNCTIONS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.Optimized,$(strip \
 $(call GetCNAVar,OPTIMIZED,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.AR,$(strip \
 $(call GetCNAVar,AR,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.ARFLAGS,$(strip \
 $(call GetCNAVar,ARFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.CC,$(strip \
 $(call GetCNAVar,CC,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.LDFLAGS,$(strip \
 $(call GetCNAVar,LDFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.RANLIB,$(strip \
 $(call GetCNAVar,RANLIB,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.RANLIBFLAGS,$(strip \
 $(call GetCNAVar,RANLIBFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.SHARED_LIBRARY,$(strip \
 $(call GetCNAVar,SHARED_LIBRARY,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))

# Compute the library suffix.
$(if $(call streq,1,$(Tmp.SHARED_LIBRARY)),
 $(call Set,Tmp.LibrarySuffix,$(Tmp.SHARED_LIBRARY_SUFFIX)),
 $(call Set,Tmp.LibrarySuffix,a))

# Compute the object inputs for this library.
$(call Set,Tmp.Inputs,\
 $(foreach fn,$(sort $(Tmp.Functions)),\
 $(call Set,Tmp.FnDir,\
 $(call SelectFunctionDir,$(Tmp.Config),$(Tmp.Arch),$(fn),$(Tmp.Optimized)))\
 $(Tmp.ObjPath)/$(Tmp.FnDir)/$(fn).o))
$(Tmp.ObjPath)/libcompiler_rt.a: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
$(Summary) " ARCHIVE: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$@"
-$(Verb) $(RM) $$@
$(Verb) $(Tmp.AR) $(Tmp.ARFLAGS) $$@ $(Tmp.Inputs)
$(Verb) $(Tmp.RANLIB) $(Tmp.RANLIBFLAGS) $$@
$(Tmp.ObjPath)/libcompiler_rt.dylib: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
$(Summary) " DYLIB: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$@"
$(Verb) $(Tmp.CC) -arch $(Tmp.Arch) -dynamiclib -o $$@ \
 $(Tmp.Inputs) $(Tmp.LDFLAGS)
$(Tmp.ObjPath)/libcompiler_rt.so: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
$(Summary) " SO: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$@"
$(Verb) $(Tmp.CC) -shared -o $$@ \
 $(Tmp.Inputs) $(Tmp.LDFLAGS)
.PRECIOUS: $(Tmp.ObjPath)/.dir

# Per-Config-Arch Targets
$(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch):: $(Tmp.ObjPath)/libcompiler_rt.$(Tmp.LibrarySuffix)
.PHONY: $(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch)

# Per-Config-Arch-SubDir Objects
$(foreach key,$(SubDirKeys),\
 $(call PerPlatformConfigArchSubDir_template,$(key)))
endef

define PerPlatformConfigArchSubDir_template
$(call Set,Tmp.SubDirKey,$(1))
$(call Set,Tmp.SubDir,$($(Tmp.SubDirKey).Dir))
$(call Set,Tmp.SrcPath,$(ProjSrcRoot)/$(Tmp.SubDir))
$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch)/$(Tmp.SubDirKey))
$(call Set,Tmp.Dependencies,$($(Tmp.SubDirKey).Dependencies))
$(call Set,Tmp.CC,$(strip \
 $(call GetCNAVar,CC,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.KERNEL_USE,$(strip \
 $(call GetCNAVar,KERNEL_USE,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.VISIBILITY_HIDDEN,$(strip \
 $(call GetCNAVar,VISIBILITY_HIDDEN,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.CFLAGS,$(strip \
 $(if $(call IsDefined,$(Tmp.Key).UniversalArchs),-arch $(Tmp.Arch),)\
 $(if $(call streq,$(Tmp.VISIBILITY_HIDDEN),1),\
 -fvisibility=hidden -DVISIBILITY_HIDDEN,)\
 $(if $(call streq,$(Tmp.KERNEL_USE),1),\
 -mkernel -DKERNEL_USE,)\
 $(call GetCNAVar,CFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))

$(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.s $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
$(Summary) " ASSEMBLE: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
$(Verb) $(Tmp.CC) $(COMMON_ASMFLAGS) $(Tmp.CFLAGS) -c -o $$@ $$<
$(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.S $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
$(Summary) " ASSEMBLE: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
$(Verb) $(Tmp.CC) $(COMMON_ASMFLAGS) $(Tmp.CFLAGS) -c -o $$@ $$<
$(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.c $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
$(Summary) " COMPILE: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
$(Verb) $(Tmp.CC) $(COMMON_CFLAGS) $(Tmp.CFLAGS) -c -o $$@ $$<
$(Tmp.ObjPath)/%.o: $(Tmp.SrcPath)/%.cc $(Tmp.Dependencies) $(Tmp.ObjPath)/.dir
$(Summary) " COMPILE: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$<"
$(Verb) $(Tmp.CC) $(COMMON_CXXFLAGS) $(Tmp.CFLAGS) -c -o $$@ $$<
.PRECIOUS: $(Tmp.ObjPath)/.dir

endef

# Run templates.
$(foreach key,$(PlatformKeys),\
 $(eval $(call PerPlatform_template,$(key))))

###

ifneq ($(DEBUGMAKE),)
 $(info MAKE: Done processing Makefile)
 $(info )
endif