[CMake] Add a macro definition to detect if we are building GlobalISel:

LLVM_BUILD_GLOBAL_ISEL

llvm-svn: 260457

diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index d96afc4..8bd4c62 100644 (file)
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -69,6 +69,9 @@ if(LLVM_PARALLEL_COMPILE_JOBS)
 endif()
 
 set(LLVM_BUILD_GLOBAL_ISEL OFF CACHE BOOL "Experimental: Build GlobalISel")
+if(LLVM_BUILD_GLOBAL_ISEL)
+  add_definitions(-DLLVM_BUILD_GLOBAL_ISEL)
+endif()
 
 set(LLVM_PARALLEL_LINK_JOBS "" CACHE STRING
   "Define the maximum number of concurrent link jobs.")