Show cmake debug information. (#2316)

@@ -347,6 +347,8 @@ endif()
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules)
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
 
+include(show-info)
+
 if(SHERPA_ONNX_ENABLE_WASM)
   # Enable it for debugging in case there is something wrong.
   # string(APPEND CMAKE_CXX_FLAGS " -g4 -s ASSERTIONS=2 -s SAFE_HEAP=1 -s STACK_OVERFLOW_CHECK=1 ")

+message(STATUS "CMAKE_SOURCE_DIR: ${CMAKE_SOURCE_DIR}")
+message(STATUS "CMAKE_BINARY_DIR: ${CMAKE_BINARY_DIR}")
+message(STATUS "PROJECT_SOURCE_DIR: ${PROJECT_SOURCE_DIR}")
+message(STATUS "PROJECT_BINARY_DIR: ${PROJECT_BINARY_DIR}")
+message(STATUS "CMake version: ${CMAKE_VERSION}")
+message(STATUS "CMAKE_SYSTEM: ${CMAKE_SYSTEM}")
+message(STATUS "CMAKE_SYSTEM_NAME: ${CMAKE_SYSTEM_NAME}")
+message(STATUS "CMAKE_SYSTEM_VERSION: ${CMAKE_SYSTEM_VERSION}")
+message(STATUS "CMAKE_SYSTEM_PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")
+
+find_package(Git QUIET)
+if(Git_FOUND)
+  execute_process(COMMAND
+    "${GIT_EXECUTABLE}" describe --always --abbrev=40
+    WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+    OUTPUT_VARIABLE SHERPA_ONNX_GIT_SHA1
+    ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+
+  execute_process(COMMAND
+    "${GIT_EXECUTABLE}" log -1 --format=%ad --date=local
+    WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+    OUTPUT_VARIABLE SHERPA_ONNX_GIT_DATE
+    ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+  message(STATUS "sherpa-onnx git sha1: ${SHERPA_ONNX_GIT_SHA1}")
+  message(STATUS "sherpa-onnx git date: ${SHERPA_ONNX_GIT_DATE}")
+else()
+  message(WARNING "git is not found")
+endif()
+
+if(UNIX AND NOT APPLE)
+  execute_process(COMMAND
+    lsb_release -sd
+    OUTPUT_VARIABLE SHERPA_ONNX_OS
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+elseif(APPLE)
+  execute_process(COMMAND
+    sw_vers -productName
+    OUTPUT_VARIABLE _product_name
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+
+  execute_process(COMMAND
+    sw_vers -productVersion
+    OUTPUT_VARIABLE _product_version
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+
+  execute_process(COMMAND
+    sw_vers -buildVersion
+    OUTPUT_VARIABLE _build_version
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+  set(SHERPA_ONNX_OS "${_product_name} ${_product_version} ${_build_version}")
+elseif(WIN32)
+  execute_process(COMMAND
+    wmic os get caption,version
+    OUTPUT_VARIABLE SHERPA_ONNX_OS_TWO_LINES
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+  # Now SHERPA_ONNX_OS_TWO_LINES contains something like
+  #  Caption                          Version
+  #  Microsoft Windows 10 Pro         10.0.18362
+  string(REPLACE "\n" ";" SHERPA_ONNX_OS_LIST ${SHERPA_ONNX_OS_TWO_LINES})
+  list(GET SHERPA_ONNX_OS_LIST 1 SHERPA_ONNX_OS)
+else()
+  set(SHERPA_ONNX_OS "Unknown")
+endif()
+message(STATUS "OS used to build sherpa-onnx: ${SHERPA_ONNX_OS}")
+
+if(CMAKE_CXX_COMPILER)
+  message(STATUS "C++ compiler: ${CMAKE_CXX_COMPILER}")
+  if(CMAKE_CXX_COMPILER_ID)
+    message(STATUS "C++ compiler ID: ${CMAKE_CXX_COMPILER_ID}")
+    message(STATUS "C++ compiler version: ${CMAKE_CXX_COMPILER_VERSION}")
+  endif()
+endif()
+
+if(CMAKE_C_COMPILER)
+  message(STATUS "C compiler: ${CMAKE_C_COMPILER}")
+  if(CMAKE_C_COMPILER_ID)
+    message(STATUS "C compiler ID: ${CMAKE_C_COMPILER_ID}")
+    message(STATUS "C compiler version: ${CMAKE_C_COMPILER_VERSION}")
+  endif()
+endif()