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      1 ##===- tools/shlib/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 LEVEL := ../..
     11 
     12 LIBRARYNAME = LLVM-$(LLVMVersion)
     13 
     14 NO_BUILD_ARCHIVE := 1
     15 LINK_LIBS_IN_SHARED := 1
     16 SHARED_LIBRARY := 1
     17 
     18 include $(LEVEL)/Makefile.config
     19 
     20 ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
     21   EXPORTED_SYMBOL_FILE = $(ObjDir)/$(LIBRARYNAME).exports
     22 
     23   ifeq (1,$(ENABLE_EMBED_STDCXX))
     24     # It is needed to force static-stdc++.a linked.
     25     SHLIB_FRAG_NAMES += stdc++.a.o
     26   endif
     27 
     28 endif
     29 
     30 include $(LEVEL)/Makefile.common
     31 
     32 # Include all archives in libLLVM.(so|dylib) except the ones that have
     33 # their own dynamic libraries and TableGen.
     34 Archives := $(wildcard $(LibDir)/libLLVM*.a)
     35 SharedLibraries := $(wildcard $(LibDir)/libLLVM*$(SHLIBEXT))
     36 ExcludeFromLibLlvm := $(basename $(SharedLibraries)).a %/libLLVMTableGen.a
     37 IncludeInLibLlvm := $(filter-out $(ExcludeFromLibLlvm), $(Archives))
     38 LLVMLibsOptions := $(IncludeInLibLlvm:$(LibDir)/lib%.a=-l%)
     39 LLVMLibsPaths   := $(IncludeInLibLlvm)
     40 
     41 $(LibName.SO): $(LLVMLibsPaths)
     42 
     43 ifeq ($(HOST_OS),Darwin)
     44     # set dylib internal version number to llvmCore submission number
     45     ifdef LLVM_SUBMIT_VERSION
     46         LLVMLibsOptions := $(LLVMLibsOptions) -Wl,-current_version \
     47                         -Wl,$(LLVM_SUBMIT_VERSION).$(LLVM_SUBMIT_SUBVERSION) \
     48                         -Wl,-compatibility_version -Wl,1
     49     endif
     50     # Include everything from the .a's into the shared library.
     51     LLVMLibsOptions    := $(LLVMLibsOptions) -all_load
     52     # extra options to override libtool defaults 
     53     LLVMLibsOptions    := $(LLVMLibsOptions)  \
     54                          -Wl,-dead_strip \
     55                          -Wl,-seg1addr -Wl,0xE0000000 
     56 
     57     # Mac OS X 10.4 and earlier tools do not allow a second -install_name on command line
     58     DARWIN_VERS := $(shell echo $(TARGET_TRIPLE) | sed 's/.*darwin\([0-9]*\).*/\1/')
     59     ifneq ($(DARWIN_VERS),8)
     60        LLVMLibsOptions    := $(LLVMLibsOptions)  \
     61                             -Wl,-install_name \
     62                             -Wl,"@executable_path/../lib/lib$(LIBRARYNAME)$(SHLIBEXT)"
     63     endif
     64 endif
     65 
     66 ifeq ($(HOST_OS), $(filter $(HOST_OS), Linux FreeBSD OpenBSD))
     67     # Include everything from the .a's into the shared library.
     68     LLVMLibsOptions := -Wl,--whole-archive $(LLVMLibsOptions) \
     69                        -Wl,--no-whole-archive
     70 endif
     71 
     72 ifeq ($(HOST_OS),Linux)
     73     # Don't allow unresolved symbols.
     74     LLVMLibsOptions += -Wl,--no-undefined
     75 endif
     76 
     77 ifeq ($(HOST_OS),SunOS)
     78     # add -z allextract ahead of other libraries on Solaris
     79     LLVMLibsOptions := -Wl,-z -Wl,allextract $(LLVMLibsOptions)
     80 endif
     81 
     82 ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
     83 
     84 SHLIB_STUBS := $(addprefix $(ObjDir)/, $(SHLIB_FRAG_NAMES))
     85 SHLIB_FRAGS := $(patsubst %.a.o, $(ObjDir)/%.syms.txt, $(LIBRARYNAME).a.o $(SHLIB_FRAG_NAMES))
     86 LLVMLibsOptions := $(SHLIB_STUBS) $(LLVMLibsOptions)
     87 
     88 $(LibName.SO): $(SHLIB_STUBS)
     89 
     90 %.syms.txt: %.a.o
     91 	$(Echo) Collecting global symbols of $(notdir $*)
     92 	$(Verb) $(NM_PATH) -g $< > $@
     93 
     94 $(ObjDir)/$(LIBRARYNAME).exports: $(SHLIB_FRAGS) $(ObjDir)/.dir
     95 	$(Echo) Generating exports for $(LIBRARYNAME)
     96 	$(Verb) ($(SED) -n \
     97 			-e "s/^.* T _\([^.][^.]*\)$$/\1/p" \
     98 			-e "s/^.* [BDR] _\([^.][^.]*\)$$/\1 DATA/p" \
     99 			$(SHLIB_FRAGS) \
    100 		 | sort -u) > $@
    101 
    102 $(ObjDir)/$(LIBRARYNAME).a.o: $(LLVMLibsPaths) $(ObjDir)/.dir
    103 	$(Echo) Linking all LLVMLibs together for $(LIBRARYNAME)
    104 	$(Verb) $(Link) -nostartfiles -Wl,-r -nodefaultlibs -o $@ \
    105 			-Wl,--whole-archive $(LLVMLibsPaths) \
    106 			-Wl,--no-whole-archive
    107 
    108 $(ObjDir)/stdc++.a.o: $(ObjDir)/.dir
    109 	$(Echo) Linking all libs together for static libstdc++.a
    110 	$(Verb) $(Link) -nostartfiles -Wl,-r -nodefaultlibs -o $@ \
    111 			-Wl,--whole-archive -lstdc++ \
    112 			-Wl,--no-whole-archive
    113 # FIXME: workaround to invalidate -lstdc++
    114 	$(Echo) Making dummy -lstdc++ to lib
    115 	$(Verb) $(AR) rc $(ToolDir)/libstdc++.dll.a
    116 # FIXME: Is install-local needed?
    117 
    118 clean-local::
    119 	$(Verb) $(RM) -f $(ToolDir)/libstdc++.dll.a
    120 
    121 endif
    122