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      1 ##===- tools/lto/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 LIBRARYNAME := LTO
     12 LINK_COMPONENTS := all-targets core lto mc mcdisassembler support
     13 LINK_LIBS_IN_SHARED := 1
     14 SHARED_LIBRARY := 1
     15 
     16 EXPORTED_SYMBOL_FILE = $(PROJ_SRC_DIR)/lto.exports
     17 
     18 include $(LEVEL)/Makefile.common
     19 
     20 ifeq ($(HOST_OS),Darwin)
     21     # Special hack to allow libLTO to have an offset version number.
     22     ifdef LLVM_LTO_VERSION_OFFSET
     23         LTO_LIBRARY_VERSION := $(shell expr $(LLVM_SUBMIT_VERSION) + \
     24                                             $(LLVM_LTO_VERSION_OFFSET))
     25     else
     26         LTO_LIBRARY_VERSION := $(LLVM_SUBMIT_VERSION)
     27     endif
     28 
     29     # set dylib internal version number to llvmCore submission number
     30     ifdef LLVM_SUBMIT_VERSION
     31         LLVMLibsOptions := $(LLVMLibsOptions) -Wl,-current_version \
     32                         -Wl,$(LTO_LIBRARY_VERSION).$(LLVM_SUBMIT_SUBVERSION) \
     33                         -Wl,-compatibility_version -Wl,1
     34     endif
     35 
     36     # If we're doing an Apple-style build, add the LTO object path.
     37     ifeq ($(RC_XBS),YES)
     38        TempFile        := $(shell mkdir -p ${OBJROOT}/dSYMs ; mktemp ${OBJROOT}/dSYMs/llvm-lto.XXXXXX)
     39        LLVMLibsOptions := $(LLVMLibsOptions) \
     40                           -Wl,-object_path_lto -Wl,$(TempFile)
     41     endif
     42 endif
     43