[CMake] Expose opt-remark tooling through libOptRemarks.dylib

* Create an install target for it
* Add it under tools/opt-remarks
* Add an export file for the dylib
* Install the llvm-c/OptRemarks.h header
* Add an API to query its version

rdar://45458839

llvm-svn: 346127

llvm/cmake/modules/AddLLVM.cmake

@@ -635,6 +635,7 @@ macro(add_llvm_library name)
     set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS_BUILDTREE_ONLY ${name})
   else()
     if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LTO" OR
+        ${name} STREQUAL "OptRemarks" OR
         (LLVM_LINK_LLVM_DYLIB AND ${name} STREQUAL "LLVM"))
       set(install_dir lib${LLVM_LIBDIR_SUFFIX})
       if(ARG_SHARED OR BUILD_SHARED_LIBS)

llvm/include/llvm-c/OptRemarks.h

@@ -186,6 +186,13 @@ LLVMOptRemarkParserGetErrorMessage(LLVMOptRemarkParserRef Parser);
  */
 extern void LLVMOptRemarkParserDispose(LLVMOptRemarkParserRef Parser);
 
+/**
+ * Returns the version of the opt-remarks dylib.
+ *
+ * \since OPT_REMARKS_API_VERSION=0
+ */
+extern uint32_t LLVMOptRemarkVersion(void);
+
 /**
  * @} // endgoup LLVMCOPTREMARKS
  */

llvm/tools/opt-remarks/CMakeLists.txt

@@ -0,0 +1,22 @@
+set(LLVM_LINK_COMPONENTS
+  OptRemarks
+  )
+
+set(SOURCES
+  liboptremarks.cpp
+  )
+
+set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_CURRENT_SOURCE_DIR}/OptRemarks.exports)
+
+add_llvm_library(OptRemarks SHARED ${SOURCES})
+
+install(FILES ${LLVM_MAIN_INCLUDE_DIR}/llvm-c/OptRemarks.h
+  DESTINATION include/llvm-c
+  COMPONENT OptRemarks)
+
+if (APPLE)
+  set(OPTREMARKS_VERSION ${LLVM_VERSION_MAJOR})
+  set_property(TARGET OptRemarks APPEND_STRING PROPERTY
+              LINK_FLAGS
+              " -compatibility_version 1 -current_version ${OPTREMARKS_VERSION}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}")
+endif()

llvm/tools/opt-remarks/OptRemarks.exports

@@ -0,0 +1,6 @@
+LLVMOptRemarkParserCreate
+LLVMOptRemarkParserGetNext
+LLVMOptRemarkParserHasError
+LLVMOptRemarkParserGetErrorMessage
+LLVMOptRemarkParserDispose
+LLVMOptRemarkVersion

llvm/tools/opt-remarks/liboptremarks.cpp

@@ -0,0 +1,18 @@
+//===-liboptremarks.cpp - LLVM Opt-Remarks Shared Library -----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Provide a library to work with optimization remarks.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-c/OptRemarks.h"
+
+extern uint32_t LLVMOptRemarkVersion(void) {
+  return OPT_REMARKS_API_VERSION;
+}