[Build] Reflect Compile-Time CMake Options into libtvm.so (apache#6280)

* Initial comit

* Address comments from @tqchen

CMakeLists.txt

@@ -336,6 +336,7 @@ include(cmake/modules/contrib/TF_TVMDSOOP.cmake)
 include(cmake/modules/contrib/CoreML.cmake)
 include(cmake/modules/contrib/ONNX.cmake)
 include(cmake/modules/contrib/ArmComputeLib.cmake)
+include(cmake/modules/Git.cmake)
 
 include(CheckCXXCompilerFlag)
 if(NOT MSVC)
@@ -384,6 +385,15 @@ if(BUILD_FOR_HEXAGON)
     PUBLIC "${USE_HEXAGON_SDK}/incs/stddef")
 endif()
 
+if (${GIT_FOUND})
+  set_property(
+    SOURCE ${CMAKE_CURRENT_LIST_DIR}/src/support/libinfo.cc
+    APPEND
+    PROPERTY COMPILE_DEFINITIONS
+    TVM_GIT_COMMIT_HASH="${TVM_GIT_COMMIT_HASH}"
+  )
+endif()
+
 if(USE_THREADS AND NOT BUILD_FOR_HEXAGON)
   message(STATUS "Build with thread support...")
   set(CMAKE_THREAD_PREFER_PTHREAD TRUE)

cmake/modules/Git.cmake

@@ -0,0 +1,40 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# This script provides
+#   - GIT_FOUND - true if the command line client was found
+#   - GIT_EXECUTABLE - path to git command line client
+#   - TVM_GIT_COMMIT_HASH
+find_package(Git QUIET)
+if (${GIT_FOUND})
+  message(STATUS "Git found: ${GIT_EXECUTABLE}")
+  execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
+                  WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
+                  OUTPUT_VARIABLE TVM_GIT_COMMIT_HASH
+                  RESULT_VARIABLE _TVM_GIT_RESULT
+                  ERROR_VARIABLE _TVM_GIT_ERROR
+                  OUTPUT_STRIP_TRAILING_WHITESPACE
+                  ERROR_STRIP_TRAILING_WHITESPACE)
+  if (${_TVM_GIT_RESULT} EQUAL 0)
+    message(STATUS "Found TVM_GIT_COMMIT_HASH=${TVM_GIT_COMMIT_HASH}")
+  else()
+    message(STATUS "Not a git repo")
+    set(TVM_GIT_COMMIT_HASH "NOT-FOUND")
+  endif()
+else()
+  message(WARNING "Git not found")
+  set(TVM_GIT_COMMIT_HASH "NOT-FOUND")
+endif()

python/tvm/__init__.py

@@ -66,9 +66,13 @@
 # others
 from . import arith
 
+# support infra
+from . import support
+
 # Contrib initializers
 from .contrib import rocm as _rocm, nvcc as _nvcc, sdaccel as _sdaccel
 
+
 def tvm_wrap_excepthook(exception_hook):
     """Wrap given excepthook with TVM additional work."""
 
@@ -82,4 +86,5 @@ def wrapper(exctype, value, trbk):
 
     return wrapper
 
+
 sys.excepthook = tvm_wrap_excepthook(sys.excepthook)

python/tvm/support.py

@@ -0,0 +1,25 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+"""Support infra of TVM."""
+import tvm._ffi
+
+
+def libinfo():
+    return GetLibInfo()
+
+
+tvm._ffi._init_api("support", __name__)

src/support/libinfo.cc

@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+#include <tvm/node/container.h>
+#include <tvm/runtime/object.h>
+#include <tvm/runtime/registry.h>
+
+#ifndef TVM_GIT_COMMIT_HASH
+#define TVM_GIT_COMMIT_HASH "NOT-FOUND"
+#endif
+
+namespace tvm {
+
+Map<String, String> GetLibInfo() {
+  Map<String, String> result = {
+      {"GIT_COMMIT_HASH", TVM_GIT_COMMIT_HASH},
+  };
+  return result;
+}
+
+TVM_REGISTER_GLOBAL("support.GetLibInfo").set_body_typed(GetLibInfo);
+
+}  // namespace tvm