From e0a9115e2804bb6bdd236028600c353bc5240f10 Mon Sep 17 00:00:00 2001
From: Zhou Wei <52485244+zhouwei25@users.noreply.github.com>
Date: Wed, 29 Jul 2020 11:09:05 +0800
Subject: [PATCH] fix random compile failure due to missing file (#25661)

---
 cmake/generic.cmake                       | 16 +++++++---------
 paddle/fluid/framework/ir/CMakeLists.txt  |  2 +-
 paddle/fluid/operators/CMakeLists.txt     |  2 +-
 paddle/fluid/operators/jit/CMakeLists.txt |  2 +-
 4 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/cmake/generic.cmake b/cmake/generic.cmake
index 69f4ccae884..8842e8e21c6 100644
--- a/cmake/generic.cmake
+++ b/cmake/generic.cmake
@@ -819,20 +819,18 @@ function(brpc_library TARGET_NAME)
   cc_library("${TARGET_NAME}" SRCS "${brpc_library_SRCS}" DEPS "${TARGET_NAME}_proto" "${brpc_library_DEPS}")
 endfunction()
 
-# copy_if_different from src_file to dst_file before barrier_target.
-function(copy_if_different src_file dst_file barrier_target)
-  # this is a dummy target, should always be run to update ${dst_file}
-  add_custom_target(before_${barrier_target} ALL
-      DEPENDS before_${barrier_target}_custom_command
-  )
-  add_dependencies(${barrier_target} before_${barrier_target})
+# copy_if_different from src_file to dst_file At the beginning of the build.
+function(copy_if_different src_file dst_file)
+  get_filename_component(FILE_NAME ${dst_file} NAME_WE)
 
-  add_custom_command(
-      OUTPUT before_${barrier_target}_custom_command
+  # this is a dummy target for custom command, should always be run firstly to update ${dst_file}
+  add_custom_target(copy_${FILE_NAME}_command ALL
       COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src_file} ${dst_file}
       COMMENT "copy_if_different ${dst_file}"
       VERBATIM
   )
+
+  add_dependencies(extern_glog copy_${FILE_NAME}_command)
 endfunction()
 
 # create a dummy source file, then create a static library.
diff --git a/paddle/fluid/framework/ir/CMakeLists.txt b/paddle/fluid/framework/ir/CMakeLists.txt
index 81bd8a4adf4..8787aa8a94a 100644
--- a/paddle/fluid/framework/ir/CMakeLists.txt
+++ b/paddle/fluid/framework/ir/CMakeLists.txt
@@ -4,7 +4,7 @@ file(WRITE ${pass_file} "// Generated by the paddle/fluid/framework/ir/CMakeList
 file(APPEND ${pass_file} "\#pragma once\n")
 file(APPEND ${pass_file} "\#include \"paddle/fluid/framework/ir/pass.h\"\n")
 
-copy_if_different(${pass_file} ${pass_file_final} extern_glog)
+copy_if_different(${pass_file} ${pass_file_final})
 
 add_subdirectory(fuse_optimizer_ops_pass)
 add_subdirectory(memory_optimize_pass)
diff --git a/paddle/fluid/operators/CMakeLists.txt b/paddle/fluid/operators/CMakeLists.txt
index 23509773fa9..012b16a6a05 100644
--- a/paddle/fluid/operators/CMakeLists.txt
+++ b/paddle/fluid/operators/CMakeLists.txt
@@ -7,7 +7,7 @@ set(pybind_file ${PADDLE_BINARY_DIR}/paddle/fluid/pybind/pybind.h.tmp CACHE INTE
 set(pybind_file_final ${PADDLE_BINARY_DIR}/paddle/fluid/pybind/pybind.h)
 file(WRITE ${pybind_file} "// Generated by the paddle/fluid/operators/CMakeLists.txt.  DO NOT EDIT!\n\n")
 
-copy_if_different(${pybind_file} ${pybind_file_final} operator)
+copy_if_different(${pybind_file} ${pybind_file_final})
 
 add_subdirectory(math)
 add_subdirectory(controlflow)
diff --git a/paddle/fluid/operators/jit/CMakeLists.txt b/paddle/fluid/operators/jit/CMakeLists.txt
index ce1b566c0b8..1c56efeab41 100644
--- a/paddle/fluid/operators/jit/CMakeLists.txt
+++ b/paddle/fluid/operators/jit/CMakeLists.txt
@@ -12,7 +12,7 @@ file(GLOB jit_kernel_cc_srcs RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "*.cc")
 list(REMOVE_ITEM jit_kernel_cc_srcs test.cc benchmark.cc)
 cc_library(jit_kernel_base SRCS ${jit_kernel_cc_srcs} DEPS ${JIT_KERNEL_DEPS})
 
-copy_if_different(${jit_file} ${jit_file_final} jit_kernel_base)
+copy_if_different(${jit_file} ${jit_file_final})
 
 # refer must go first
 add_subdirectory(refer)
-- 
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