third-party lib offline compilation support for mkldnn flashattn gtest

.gitmodules

@@ -50,3 +50,15 @@
 	path = third_party/eigen3
 	url = https://gitlab.com/libeigen/eigen.git
 	ignore = dirty
+[submodule "third_party/mkldnn"]
+	path = third_party/mkldnn
+	url = https://github.com/oneapi-src/oneDNN.git
+	ignore = dirty
+[submodule "third_party/flashattn"]
+	path = third_party/flashattn
+	url = https://github.com/PaddlePaddle/flash-attention.git
+	ignore = dirty
+[submodule "third_party/gtest"]
+	path = third_party/gtest
+	url = https://github.com/google/googletest.git
+	ignore = dirty

cmake/external/flashattn.cmake

@@ -19,7 +19,7 @@ add_definitions(-DPADDLE_WITH_FLASHATTN)
 set(FLASHATTN_PREFIX_DIR ${THIRD_PARTY_PATH}/flashattn)
 set(FLASHATTN_SOURCE_SUBDIR csrc/flash_attn)
 set(FLASHATTN_INSTALL_DIR ${THIRD_PARTY_PATH}/install/flashattn)
-set(FLASHATTN_REPOSITORY ${GIT_URL}/PaddlePaddle/flash-attention.git)
+set(SOURCE_DIR ${PADDLE_SOURCE_DIR}/third_party/flashattn)
 set(FLASHATTN_TAG 18106c1ba0ccee81b97ca947397c08a141815a47)
 
 set(FLASHATTN_INCLUDE_DIR
@@ -69,9 +69,8 @@ endif()
 
 ExternalProject_Add(
   extern_flashattn
-  ${EXTERNAL_PROJECT_LOG_ARGS} ${SHALLOW_CLONE}
-  GIT_REPOSITORY ${FLASHATTN_REPOSITORY}
-  GIT_TAG ${FLASHATTN_TAG}
+  ${EXTERNAL_PROJECT_LOG_ARGS}
+  SOURCE_DIR ${SOURCE_DIR}
   PREFIX ${FLASHATTN_PREFIX_DIR}
   SOURCE_SUBDIR ${FLASHATTN_SOURCE_SUBDIR}
   UPDATE_COMMAND ""

cmake/external/gtest.cmake

@@ -26,7 +26,7 @@ set(GTEST_INSTALL_DIR ${THIRD_PARTY_PATH}/install/gtest)
 set(GTEST_INCLUDE_DIR
     "${GTEST_INSTALL_DIR}/include"
     CACHE PATH "gtest include directory." FORCE)
-set(GTEST_REPOSITORY ${GIT_URL}/google/googletest.git)
+set(SOURCE_DIR ${PADDLE_SOURCE_DIR}/third_party/gtest)
 set(GTEST_TAG release-1.8.1)
 set(GTEST_SOURCE_DIR ${THIRD_PARTY_PATH}/gtest/src/extern_gtest)
 include_directories(${GTEST_INCLUDE_DIR})
@@ -69,14 +69,13 @@ if(NOT WIN32 AND ${CMAKE_CXX_COMPILER_VERSION} VERSION_GREATER 12.0)
   # See: [Why calling some `git` commands before `patch`?]
   set(GTEST_PATCH_COMMAND
       git checkout -- . && git checkout ${GTEST_TAG} && patch -Nd
-      ${GTEST_SOURCE_DIR}/googletest/src < ${native_src})
+      ${SOURCE_DIR}/googletest/src < ${native_src})
 endif()
 if(WIN32)
   ExternalProject_Add(
     extern_gtest
-    ${EXTERNAL_PROJECT_LOG_ARGS} ${SHALLOW_CLONE}
-    GIT_REPOSITORY ${GTEST_REPOSITORY}
-    GIT_TAG ${GTEST_TAG}
+    ${EXTERNAL_PROJECT_LOG_ARGS}
+    SOURCE_DIR ${SOURCE_DIR}
     DEPENDS ${GTEST_DEPENDS}
     PREFIX ${GTEST_PREFIX_DIR}
     UPDATE_COMMAND ""
@@ -106,9 +105,8 @@ if(WIN32)
 else()
   ExternalProject_Add(
     extern_gtest
-    ${EXTERNAL_PROJECT_LOG_ARGS} ${SHALLOW_CLONE}
-    GIT_REPOSITORY ${GTEST_REPOSITORY}
-    GIT_TAG ${GTEST_TAG}
+    ${EXTERNAL_PROJECT_LOG_ARGS}
+    SOURCE_DIR ${SOURCE_DIR}
     DEPENDS ${GTEST_DEPENDS}
     PREFIX ${GTEST_PREFIX_DIR}
     UPDATE_COMMAND ""

cmake/external/mkldnn.cmake

@@ -20,7 +20,7 @@ set(MKLDNN_INSTALL_DIR ${THIRD_PARTY_PATH}/install/mkldnn)
 set(MKLDNN_INC_DIR
     "${MKLDNN_INSTALL_DIR}/include"
     CACHE PATH "mkldnn include directory." FORCE)
-set(MKLDNN_REPOSITORY ${GIT_URL}/oneapi-src/oneDNN.git)
+set(SOURCE_DIR ${PADDLE_SOURCE_DIR}/third_party/mkldnn)
 set(MKLDNN_TAG 2089770c4818be8933c5e9d1dd3cbaeba1457667)
 
 # Introduce variables:
@@ -69,9 +69,8 @@ endif()
 
 ExternalProject_Add(
   ${MKLDNN_PROJECT}
-  ${EXTERNAL_PROJECT_LOG_ARGS} ${SHALLOW_CLONE}
-  GIT_REPOSITORY ${MKLDNN_REPOSITORY}
-  GIT_TAG ${MKLDNN_TAG}
+  ${EXTERNAL_PROJECT_LOG_ARGS}
+  SOURCE_DIR ${SOURCE_DIR}
   DEPENDS ${MKLDNN_DEPENDS}
   PREFIX ${MKLDNN_PREFIX_DIR}
   UPDATE_COMMAND ""