[CMake] All the checks for if LLVM_VERSION_* variables are set need to be if(DEFINED...

[oota-llvm.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3c7517eea0d44dea38961a5a177a2cbd00593359..bbfd68d5590ce8095d5226b9140894d61443f6ca 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,7 +26,35 @@ else()
   set(cmake_3_2_USES_TERMINAL USES_TERMINAL)
 endif()
 
-project(LLVM C CXX ASM)
+if(NOT DEFINED LLVM_VERSION_MAJOR)
+  set(LLVM_VERSION_MAJOR 3)
+endif()
+if(NOT DEFINED LLVM_VERSION_MINOR)
+  set(LLVM_VERSION_MINOR 8)
+endif()
+if(NOT DEFINED LLVM_VERSION_PATCH)
+  set(LLVM_VERSION_PATCH 0)
+endif()
+if(NOT DEFINED LLVM_VERSION_SUFFIX)
+  set(LLVM_VERSION_SUFFIX svn)
+endif()
+
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+  set(cmake_3_0_PROJ_VERSION
+    VERSION ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH})
+  set(cmake_3_0_LANGUAGES LANGUAGES)
+endif()
+
+if (NOT PACKAGE_VERSION)
+  set(PACKAGE_VERSION
+    "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX}")
+endif()
+
+project(LLVM
+  ${cmake_3_0_PROJ_VERSION}
+  ${cmake_3_0_LANGUAGES}
+  C CXX ASM)
 
 # The following only works with the Ninja generator in CMake >= 3.0.
 set(LLVM_PARALLEL_COMPILE_JOBS "" CACHE STRING
@@ -58,16 +86,6 @@ set(CMAKE_MODULE_PATH
   "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
   )
 
-set(LLVM_VERSION_MAJOR 3)
-set(LLVM_VERSION_MINOR 8)
-set(LLVM_VERSION_PATCH 0)
-set(LLVM_VERSION_SUFFIX svn)
-
-if (NOT PACKAGE_VERSION)
-  set(PACKAGE_VERSION
-    "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX}")
-endif()
-
 option(LLVM_INSTALL_UTILS "Include utility binaries in the 'install' target." OFF)
 
 option(LLVM_INSTALL_TOOLCHAIN_ONLY "Only include toolchain files in the 'install' target." OFF)
@@ -590,6 +608,17 @@ endif( ${CMAKE_SYSTEM_NAME} MATCHES SunOS )
 # use export_executable_symbols(target).
 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
 
+set(LLVM_PROFDATA_FILE "" CACHE FILEPATH
+  "Profiling data file to use when compiling in order to improve runtime performance.")
+
+if(LLVM_PROFDATA_FILE AND EXISTS ${LLVM_PROFDATA_FILE})
+  if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
+    add_definitions("-fprofile-instr-use=${LLVM_PROFDATA_FILE}")
+  else()
+    message(FATAL_ERROR "LLVM_PROFDATA_FILE can only be specified when compiling with clang")
+  endif()
+endif()
+
 include(AddLLVM)
 include(TableGen)