strip after compilation (#32145)

CMakeLists.txt

@@ -198,6 +198,7 @@ option(WITH_SW   "Compile PaddlePaddle with sw support"         OFF)
 option(WITH_MIPS   "Compile PaddlePaddle with mips support"         OFF)
 option(WITH_MUSL        "Compile with musl libc instead of gblic"  OFF)
 option(WITH_UNITY_BUILD "Compile with UnityBuild mode"             OFF)
+option(WITH_STRIP       "Strip so files of Whl packages"         OFF)
 
 # PY_VERSION
 if(NOT PY_VERSION)
@@ -362,6 +363,13 @@ else()
     message(WARNING "On inference mode, will take place some specific optimization. Turn on the ON_INFER flag when building inference_lib only.")
 endif()
 
+if(WITH_STRIP)
+    find_program(STRIP_PATH strip)
+    if(NOT STRIP_PATH OR NOT LINUX)
+        set(WITH_STRIP OFF CACHE STRING "Command strip is only used on Linux when it exists." FORCE)
+    endif()
+endif()
+
 add_subdirectory(paddle)
 if(WITH_PYTHON)
     add_subdirectory(python)

paddle/fluid/inference/CMakeLists.txt

@@ -119,3 +119,8 @@ if(NOT APPLE AND NOT WIN32)
     DEPENDS paddle_inference_shared)
   add_custom_target(check_symbol ALL DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/.check_symbol")
 endif()
+
+if(LINUX AND WITH_STRIP)
+  add_custom_command(TARGET paddle_inference_shared POST_BUILD
+    COMMAND ${STRIP_PATH} $<TARGET_FILE:paddle_inference_shared>)
+endif()

python/setup.py.in

@@ -516,6 +516,12 @@ else:
     with open("@PADDLE_BINARY_DIR@/python/paddle/README.rst", "r")as f:
         long_description = unicode(f.read(), 'UTF-8')
 
+# strip *.so to reduce package size
+if '${WITH_STRIP}' == 'ON':
+    command = 'find ${PADDLE_BINARY_DIR}/python/paddle -name "*.so" | xargs -i strip {}'
+    if os.system(command) != 0:
+        raise Exception("strip *.so failed, command: %s" % command)
+
 with redirect_stdout():
     setup(name='${PACKAGE_NAME}',
         version='${PADDLE_VERSION}',