Makefile revision 10181ae49c25e22267ea3d539dd53e07d5e45528 
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
10LEVEL := ../..
11LIBRARYNAME := LTO
12LINK_COMPONENTS := all-targets ipo scalaropts linker bitreader bitwriter \
13                   mcdisassembler vectorize
14LINK_LIBS_IN_SHARED := 1
15SHARED_LIBRARY := 1
16
17EXPORTED_SYMBOL_FILE = $(PROJ_SRC_DIR)/lto.exports
18
19include $(LEVEL)/Makefile.common
20
21ifdef LLVM_VERSION_INFO
22CXX.Flags += -DLLVM_VERSION_INFO='"$(LLVM_VERSION_INFO)"'
23endif
24
25ifeq ($(HOST_OS),Darwin)
26    # Special hack to allow libLTO to have an offset version number.
27    ifdef LLVM_LTO_VERSION_OFFSET
28        LTO_LIBRARY_VERSION := $(shell expr $(LLVM_SUBMIT_VERSION) + \
29                                            $(LLVM_LTO_VERSION_OFFSET))
30    else
31        LTO_LIBRARY_VERSION := $(LLVM_SUBMIT_VERSION)
32    endif
33
34    # set dylib internal version number to llvmCore submission number
35    ifdef LLVM_SUBMIT_VERSION
36        LLVMLibsOptions := $(LLVMLibsOptions) -Wl,-current_version \
37                        -Wl,$(LTO_LIBRARY_VERSION).$(LLVM_SUBMIT_SUBVERSION) \
38                        -Wl,-compatibility_version -Wl,1
39    endif
40    # extra options to override libtool defaults 
41    LLVMLibsOptions    := $(LLVMLibsOptions)  \
42                         -Wl,-dead_strip \
43                         -Wl,-seg1addr -Wl,0xE0000000 
44
45    # Mac OS X 10.4 and earlier tools do not allow a second -install_name on command line
46    DARWIN_VERS := $(shell echo $(TARGET_TRIPLE) | sed 's/.*darwin\([0-9]*\).*/\1/')
47    ifneq ($(DARWIN_VERS),8)
48       LLVMLibsOptions    := $(LLVMLibsOptions)  \
49                            -Wl,-install_name \
50                            -Wl,"@executable_path/../lib/lib$(LIBRARYNAME)$(SHLIBEXT)"
51    endif
52
53    # If we're doing an Apple-style build, add the LTO object path.
54    ifeq ($(RC_BUILDIT),YES)
55       TempFile            = $(shell mktemp ${OBJROOT}/llvm-lto.XXXXXX)
56       LLVMLibsOptions    := $(LLVMLibsOptions) \
57                             -Wl,-object_path_lto -Wl,$(TempFile)
58    endif
59endif
60