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For PR466: 

Change construction of bytecode libraries from producing a single bytecode
file to producing a library containing bytecode files. This gets around the
problem of multiple symbol definitions in the linker if something like
-lc -lc is attempted on the command line. Previously this happened because
the linker would find libc.bc as a "library". It will now find libc.a which
it can simply search for missing symbols instead of linking in wholesale.

llvm-svn: 18425
This commit is contained in:
Reid Spencer 2004-12-02 09:28:21 +00:00
parent 59d89f598c
commit 32f7e42744
1 changed files with 27 additions and 24 deletions
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51
llvm/Makefile.rules
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@ -232,8 +232,8 @@ ifdef TOOL_VERBOSE
C.Flags += -v
CXX.Flags += -v
LD.Flags += -v
BCLinkLib.Flags += -v
VERBOSE := 1
else
endif
# Adjust settings for verbose mode
@ -286,12 +286,11 @@ Link = $(LIBTOOL) $(LibTool.Flags) --mode=link $(CXX) $(CPP.Flags) \
$(CompileCommonOpts) $(LD.Flags) $(Strip)
Relink = $(LIBTOOL) $(LibTool.Flags) --mode=link $(CXX) $(CPP.Flags) \
$(CompileCommonOpts)
BCLinkLib = $(LLVMGCC) -shared -nostdlib $(BCLinkLib.Flags)
LTInstall = $(LIBTOOL) $(LibTool.Flags) --mode=install $(INSTALL)
Burg = $(BURG) -I $(BUILD_SRC_DIR)
TableGen = $(TBLGEN) -I $(BUILD_SRC_DIR)
Archive = $(AR) $(AR.Flags)
LArchive = $(ToolDir)/llvm-ar rcsf
LArchive = $(LLVMToolDir)/llvm-ar rcsf
ifdef RANLIB
Ranlib = $(RANLIB)
else
@ -466,7 +465,7 @@ LIBRARYNAME := $(strip $(LIBRARYNAME))
LibName.LA := $(LibDir)/lib$(LIBRARYNAME).la
LibName.A := $(LibDir)/lib$(LIBRARYNAME).a
LibName.O := $(LibDir)/$(LIBRARYNAME).o
LibName.BC := $(LibDir)/lib$(LIBRARYNAME).bc
LibName.BCA:= $(LibDir)/lib$(LIBRARYNAME).bca
#---------------------------------------------------------
# Shared Library Targets:
@ -511,37 +510,41 @@ endif
#---------------------------------------------------------
ifdef BYTECODE_LIBRARY
ifdef EXPORTED_SYMBOL_LIST
BCLinkLib += -Xlinker -internalize-public-api-list=$(EXPORTED_SYMBOL_LIST)
all-local:: $(LibName.BCA)
ifdef EXPORTED_SYMBOL_FILE
BCLinkLib = $(LLVMGCC) -shared -nostdlib -Xlinker \
-internalize-public-api-file=$(EXPORTED_SYMBOL_FILE)
$(LibName.BCA): $(BUILT_SOURCES) $(ObjectsBC) $(LibDir)/.dir $(GCCLD)
$(Echo) Building $(BuildMode) Bytecode Archive $(notdir $@) \
"(internalize)"
$(BCLinkLib) -o $(ObjDir)/$(LIBRARYNAME).o $(ObjectsBC)
$(Verb) $(LArchive) $@ $(ObjDir)/$(LIBRARYNAME).o
else
ifdef EXPORTED_SYMBOL_FILE
BCLinkLib += -Xlinker -internalize-public-api-file=$(EXPORTED_SYMBOL_FILE)
else
BCLinkLib += -Xlinker -disable-internalize
endif
$(LibName.BCA): $(BUILT_SOURCES) $(ObjectsBC) $(LibDir)/.dir $(GCCLD)
$(Echo) Building $(BuildMode) Bytecode Archive $(notdir $@)
$(Verb) $(LArchive) $@ $(ObjectsBC)
endif
all-local:: $(LibName.BC)
$(LibName.BC): $(BUILT_SOURCES) $(ObjectsBC) $(LibDir)/.dir $(GCCLD)
$(Echo) Linking $(BuildMode) Bytecode Library $(notdir $@)
$(Verb) $(BCLinkLib) -o $@ $(ObjectsBC)
clean-local::
ifneq ($(strip $(LibName.BC)),)
-$(Verb) $(RM) -f $(LibName.BC)
ifneq ($(strip $(LibName.BCA)),)
-$(Verb) $(RM) -f $(LibName.BCA)
endif
DestBytecodeLib = $(bytecode_libdir)/lib$(LIBRARYNAME).bc
DestBytecodeLib = $(bytecode_libdir)/lib$(LIBRARYNAME).a
install-bytecode: $(DestBytecodeLib)
install-local:: $(DestBytecodeLib)
$(DestBytecodeLib): $(bytecode_libdir) $(LibName.BC)
$(Echo) Installing $(BuildMode) Bytecode Library $(DestBytecodeLib)
$(Verb) $(INSTALL) $(LibName.BC) $@
$(DestBytecodeLib): $(bytecode_libdir) $(LibName.BCA)
$(Echo) Installing $(BuildMode) Bytecode Archive $(DestBytecodeLib)
$(Verb) $(INSTALL) $(LibName.BCA) $@
uninstall-local::
$(Echo) Uninstalling $(BuildMode) Bytecode Library $(DestBytecodeLib)
$(Echo) Uninstalling $(BuildMode) Bytecode Archive $(DestBytecodeLib)
-$(Verb) $(RM) -f $(DestBytecodeLib)
endif