build/Darwin: Add an LLVM_LTO_VERSION_OFFSET make variable to allow offsetting
the libLTO library version from the actual build version.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108495 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lto/Makefile b/tools/lto/Makefile
index 8d57333..f3fb79e 100644
--- a/tools/lto/Makefile
+++ b/tools/lto/Makefile
@@ -25,10 +25,18 @@
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 := $(LLVMLibsOptions) -Wl,-current_version \
- -Wl,$(LLVM_SUBMIT_VERSION).$(LLVM_SUBMIT_SUBVERSION) \
+ -Wl,$(LTO_LIBRARY_VERSION).$(LLVM_SUBMIT_SUBVERSION) \
-Wl,-compatibility_version -Wl,1
endif
# extra options to override libtool defaults
