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Teach the Makefile build system how to handle SOURCES which include

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subdirectories. The only thing needed here is to create the appropriate
object file directories and add those as dependencies for the
compilation rules.

As a consequence, factor the non-source-file-specific dependencies for
compilation rules into a helper variable. This fixes an issue where the
project makefile wasn't actually a dependency of a bunch of compilation
make rules for no apparant reason.

This should have no observable effect for current makefile usage, but
will simplify how we build other libraries and is something CMake
already supports.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194753 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2013-11-14 23:51:29 +00:00
parent bdbcffa4af
commit 1ccba3161c
1 changed files with 34 additions and 21 deletions
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55
Makefile.rules
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@ -776,8 +776,10 @@ Sources += $(filter %.cpp %.c %.cc,$(BUILT_SOURCES))
endif
BaseNameSources := $(sort $(basename $(Sources)))
SourceDirs := $(sort $(dir $(Sources)))
ObjectsO := $(BaseNameSources:%=$(ObjDir)/%.o)
ObjectDirs := $(SourceDirs:%=$(ObjDir)/%)
#----------------------------------------------------------
# For Mingw MSYS bash and Python/w32:
@ -814,9 +816,18 @@ $(DESTDIR)$(PROJ_bindir) $(DESTDIR)$(PROJ_libdir) $(DESTDIR)$(PROJ_includedir) $
$(Verb) $(MKDIR) $* > /dev/null
$(Verb) $(DOTDIR_TIMESTAMP_COMMAND) > $@
.PRECIOUS: $(ObjDir)/.dir $(LibDir)/.dir $(ToolDir)/.dir $(ExmplDir)/.dir
.PRECIOUS: $(LibDir)/.dir $(ToolDir)/.dir $(ExmplDir)/.dir
.PRECIOUS: $(LLVMLibDir)/.dir $(LLVMToolDir)/.dir $(LLVMExmplDir)/.dir
#---------------------------------------------------------
# Collect the object directories (as there may be more
# than one if the source code is spread across
# subdirectories).
#---------------------------------------------------------
OBJECT_DIRS := $(ObjDir)/.dir $(ObjectDirs:%=%/.dir)
.PRECIOUS: $(OBJECT_DIRS)
#---------------------------------------------------------
# Handle the DIRS options for sequential construction
#---------------------------------------------------------
@ -1432,6 +1443,8 @@ ifeq ($(HOST_OS),HP-UX)
DISABLE_AUTO_DEPENDENCIES=1
endif
COMPILE_DEPS = $(OBJECT_DIRS) $(BUILT_SOURCES) $(PROJ_MAKEFILE)
# Provide rule sets for when dependency generation is enabled
ifndef DISABLE_AUTO_DEPENDENCIES
@ -1447,27 +1460,27 @@ DEPEND_OPTIONS = -MMD -MP -MF "$(ObjDir)/$*.d.tmp" \
DEPEND_MOVEFILE = then $(MV) -f "$(ObjDir)/$*.d.tmp" "$(ObjDir)/$*.d"; \
else $(RM) "$(ObjDir)/$*.d.tmp"; exit 1; fi
$(ObjDir)/%.o: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES) $(PROJ_MAKEFILE)
$(ObjDir)/%.o: %.cpp $(COMPILE_DEPS)
$(Echo) "Compiling $*.cpp for $(BuildMode) build" $(PIC_FLAG)
$(Verb) if $(Compile.CXX) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
$(DEPEND_MOVEFILE)
$(ObjDir)/%.o: %.mm $(ObjDir)/.dir $(BUILT_SOURCES) $(PROJ_MAKEFILE)
$(ObjDir)/%.o: %.mm $(COMPILE_DEPS)
$(Echo) "Compiling $*.mm for $(BuildMode) build" $(PIC_FLAG)
$(Verb) if $(Compile.CXX) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
$(DEPEND_MOVEFILE)
$(ObjDir)/%.o: %.cc $(ObjDir)/.dir $(BUILT_SOURCES) $(PROJ_MAKEFILE)
$(ObjDir)/%.o: %.cc $(COMPILE_DEPS)
$(Echo) "Compiling $*.cc for $(BuildMode) build" $(PIC_FLAG)
$(Verb) if $(Compile.CXX) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
$(DEPEND_MOVEFILE)
$(ObjDir)/%.o: %.c $(ObjDir)/.dir $(BUILT_SOURCES) $(PROJ_MAKEFILE)
$(ObjDir)/%.o: %.c $(COMPILE_DEPS)
$(Echo) "Compiling $*.c for $(BuildMode) build" $(PIC_FLAG)
$(Verb) if $(Compile.C) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
$(DEPEND_MOVEFILE)
$(ObjDir)/%.o: %.m $(ObjDir)/.dir $(BUILT_SOURCES) $(PROJ_MAKEFILE)
$(ObjDir)/%.o: %.m $(COMPILE_DEPS)
$(Echo) "Compiling $*.m for $(BuildMode) build" $(PIC_FLAG)
$(Verb) if $(Compile.C) $(DEPEND_OPTIONS) $< -o $(ObjDir)/$*.o ; \
$(DEPEND_MOVEFILE)
@ -1475,67 +1488,67 @@ $(ObjDir)/%.o: %.m $(ObjDir)/.dir $(BUILT_SOURCES) $(PROJ_MAKEFILE)
# Provide alternate rule sets if dependencies are disabled
else
$(ObjDir)/%.o: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.o: %.cpp $(COMPILE_DEPS)
$(Echo) "Compiling $*.cpp for $(BuildMode) build" $(PIC_FLAG)
$(Compile.CXX) $< -o $@
$(ObjDir)/%.o: %.mm $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.o: %.mm $(COMPILE_DEPS)
$(Echo) "Compiling $*.mm for $(BuildMode) build" $(PIC_FLAG)
$(Compile.CXX) $< -o $@
$(ObjDir)/%.o: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.o: %.cc $(COMPILE_DEPS)
$(Echo) "Compiling $*.cc for $(BuildMode) build" $(PIC_FLAG)
$(Compile.CXX) $< -o $@
$(ObjDir)/%.o: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.o: %.c $(COMPILE_DEPS)
$(Echo) "Compiling $*.c for $(BuildMode) build" $(PIC_FLAG)
$(Compile.C) $< -o $@
$(ObjDir)/%.o: %.m $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.o: %.m $(COMPILE_DEPS)
$(Echo) "Compiling $*.m for $(BuildMode) build" $(PIC_FLAG)
$(Compile.C) $< -o $@
endif
## Rules for building preprocessed (.i/.ii) outputs.
$(BuildMode)/%.ii: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
$(BuildMode)/%.ii: %.cpp $(COMPILE_DEPS)
$(Echo) "Compiling $*.cpp for $(BuildMode) build to .ii file"
$(Verb) $(Preprocess.CXX) $< -o $@
$(BuildMode)/%.ii: %.mm $(ObjDir)/.dir $(BUILT_SOURCES)
$(BuildMode)/%.ii: %.mm $(COMPILE_DEPS)
$(Echo) "Compiling $*.mm for $(BuildMode) build to .ii file"
$(Verb) $(Preprocess.CXX) $< -o $@
$(BuildMode)/%.ii: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
$(BuildMode)/%.ii: %.cc $(COMPILE_DEPS)
$(Echo) "Compiling $*.cc for $(BuildMode) build to .ii file"
$(Verb) $(Preprocess.CXX) $< -o $@
$(BuildMode)/%.i: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
$(BuildMode)/%.i: %.c $(COMPILE_DEPS)
$(Echo) "Compiling $*.c for $(BuildMode) build to .i file"
$(Verb) $(Preprocess.C) $< -o $@
$(BuildMode)/%.i: %.m $(ObjDir)/.dir $(BUILT_SOURCES)
$(BuildMode)/%.i: %.m $(COMPILE_DEPS)
$(Echo) "Compiling $*.m for $(BuildMode) build to .i file"
$(Verb) $(Preprocess.C) $< -o $@
$(ObjDir)/%.s: %.cpp $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.s: %.cpp $(COMPILE_DEPS)
$(Echo) "Compiling $*.cpp to asm for $(BuildMode) build" $(PIC_FLAG)
$(Compile.CXX) $< -o $@ -S
$(ObjDir)/%.s: %.mm $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.s: %.mm $(COMPILE_DEPS)
$(Echo) "Compiling $*.mm to asm for $(BuildMode) build" $(PIC_FLAG)
$(Compile.CXX) $< -o $@ -S
$(ObjDir)/%.s: %.cc $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.s: %.cc $(COMPILE_DEPS)
$(Echo) "Compiling $*.cc to asm for $(BuildMode) build" $(PIC_FLAG)
$(Compile.CXX) $< -o $@ -S
$(ObjDir)/%.s: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.s: %.c $(COMPILE_DEPS)
$(Echo) "Compiling $*.c to asm for $(BuildMode) build" $(PIC_FLAG)
$(Compile.C) $< -o $@ -S
$(ObjDir)/%.s: %.m $(ObjDir)/.dir $(BUILT_SOURCES)
$(ObjDir)/%.s: %.m $(COMPILE_DEPS)
$(Echo) "Compiling $*.m to asm for $(BuildMode) build" $(PIC_FLAG)
$(Compile.C) $< -o $@ -S