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##===- tools/lto/Makefile ----------------------------------*- Makefile -*-===##
# 
#                     The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
# 
##===----------------------------------------------------------------------===##

LEVEL := ../..
LIBRARYNAME := LTO
LINK_COMPONENTS := all-targets core lto mc mcdisassembler support
LINK_LIBS_IN_SHARED := 1
SHARED_LIBRARY := 1

EXPORTED_SYMBOL_FILE = $(PROJ_SRC_DIR)/lto.exports

include $(LEVEL)/Makefile.common

ifeq ($(HOST_OS),Darwin)
    # Special hack to allow libLTO to have an offset version number.
    ifdef LLVM_LTO_VERSION_OFFSET
        LTO_LIBRARY_VERSION := $(shell expr $(LLVM_SUBMIT_VERSION) + \
                                            $(LLVM_LTO_VERSION_OFFSET))
    else
        LTO_LIBRARY_VERSION := $(LLVM_SUBMIT_VERSION)
    endif

    # set dylib internal version number to llvmCore submission number
    ifdef LLVM_SUBMIT_VERSION
        LLVMLibsOptions := $(LLVMLibsOptions) -Wl,-current_version \
                        -Wl,$(LTO_LIBRARY_VERSION).$(LLVM_SUBMIT_SUBVERSION) \
                        -Wl,-compatibility_version -Wl,1
    endif

    # If we're doing an Apple-style build, add the LTO object path.
    ifeq ($(RC_XBS),YES)
       TempFile        := $(shell mkdir -p ${OBJROOT}/dSYMs ; mktemp ${OBJROOT}/dSYMs/llvm-lto.XXXXXX)
       LLVMLibsOptions := $(LLVMLibsOptions) \
                          -Wl,-object_path_lto -Wl,$(TempFile)
    endif
endif