android: move .a files into 'staticlibs' directory

to reduce overhead of gradle builds

CMakeLists.txt

@@ -404,6 +404,7 @@ if(ANDROID)
   set(LIBRARY_OUTPUT_PATH                "${OpenCV_BINARY_DIR}/lib/${ANDROID_NDK_ABI_NAME}")
   ocv_update(3P_LIBRARY_OUTPUT_PATH      "${OpenCV_BINARY_DIR}/3rdparty/lib/${ANDROID_NDK_ABI_NAME}")
   ocv_update(OPENCV_LIB_INSTALL_PATH     sdk/native/libs/${ANDROID_NDK_ABI_NAME})
+  ocv_update(OPENCV_LIB_ARCHIVE_INSTALL_PATH sdk/native/staticlibs/${ANDROID_NDK_ABI_NAME})
   ocv_update(OPENCV_3P_LIB_INSTALL_PATH  sdk/native/3rdparty/libs/${ANDROID_NDK_ABI_NAME})
   ocv_update(OPENCV_CONFIG_INSTALL_PATH  sdk/native/jni)
   ocv_update(OPENCV_INCLUDE_INSTALL_PATH sdk/native/jni/include)
@@ -472,6 +473,10 @@ else()
 endif()
 ocv_update(OPENCV_JNI_BIN_INSTALL_PATH "${OPENCV_JNI_INSTALL_PATH}")
 
+if(NOT OPENCV_LIB_ARCHIVE_INSTALL_PATH)
+  set(OPENCV_LIB_ARCHIVE_INSTALL_PATH ${OPENCV_LIB_INSTALL_PATH})
+endif()
+
 if(WIN32)
   # Postfix of DLLs:
   set(OPENCV_DLLVERSION "${OPENCV_VERSION_MAJOR}${OPENCV_VERSION_MINOR}${OPENCV_VERSION_PATCH}")

cmake/OpenCVGenAndroidMK.cmake

@@ -58,7 +58,8 @@ if(ANDROID)
   # -------------------------------------------------------------------------------------------
   set(OPENCV_INCLUDE_DIRS_CONFIGCMAKE "\"${OPENCV_CONFIG_FILE_INCLUDE_DIR}\" \"${OpenCV_SOURCE_DIR}/include\" \"${OpenCV_SOURCE_DIR}/include/opencv\"")
   set(OPENCV_BASE_INCLUDE_DIR_CONFIGCMAKE "\"${OpenCV_SOURCE_DIR}\"")
-  set(OPENCV_LIBS_DIR_CONFIGCMAKE "\$(OPENCV_THIS_DIR)/lib/\$(OPENCV_TARGET_ARCH_ABI)")
+  set(OPENCV_LIBS_DIR_CONFIGCMAKE         "\$(OPENCV_THIS_DIR)/lib/\$(OPENCV_TARGET_ARCH_ABI)")
+  set(OPENCV_LIBS_ARCHIVE_DIR_CONFIGCMAKE "\$(OPENCV_THIS_DIR)/lib/\$(OPENCV_TARGET_ARCH_ABI)")
   set(OPENCV_3RDPARTY_LIBS_DIR_CONFIGCMAKE "\$(OPENCV_THIS_DIR)/3rdparty/lib/\$(OPENCV_TARGET_ARCH_ABI)")
 
   configure_file("${OpenCV_SOURCE_DIR}/cmake/templates/OpenCV.mk.in" "${CMAKE_BINARY_DIR}/OpenCV.mk" @ONLY)
@@ -69,7 +70,8 @@ if(ANDROID)
   # -------------------------------------------------------------------------------------------
   set(OPENCV_INCLUDE_DIRS_CONFIGCMAKE "\"\$(LOCAL_PATH)/\$(OPENCV_THIS_DIR)/include/opencv\" \"\$(LOCAL_PATH)/\$(OPENCV_THIS_DIR)/include\"")
   set(OPENCV_BASE_INCLUDE_DIR_CONFIGCMAKE "")
-  set(OPENCV_LIBS_DIR_CONFIGCMAKE "\$(OPENCV_THIS_DIR)/../libs/\$(OPENCV_TARGET_ARCH_ABI)")
+  set(OPENCV_LIBS_DIR_CONFIGCMAKE         "\$(OPENCV_THIS_DIR)/../libs/\$(OPENCV_TARGET_ARCH_ABI)")
+  set(OPENCV_LIBS_ARCHIVE_DIR_CONFIGCMAKE "\$(OPENCV_THIS_DIR)/../staticlibs/\$(OPENCV_TARGET_ARCH_ABI)")
   set(OPENCV_3RDPARTY_LIBS_DIR_CONFIGCMAKE "\$(OPENCV_THIS_DIR)/../3rdparty/libs/\$(OPENCV_TARGET_ARCH_ABI)")
 
   configure_file("${OpenCV_SOURCE_DIR}/cmake/templates/OpenCV.mk.in" "${CMAKE_BINARY_DIR}/unix-install/OpenCV.mk" @ONLY)

cmake/OpenCVModule.cmake

@@ -958,7 +958,7 @@ macro(_ocv_create_module)
     ocv_install_target(${the_module} EXPORT OpenCVModules OPTIONAL
       RUNTIME DESTINATION ${OPENCV_BIN_INSTALL_PATH} COMPONENT libs
       LIBRARY DESTINATION ${OPENCV_LIB_INSTALL_PATH} COMPONENT libs NAMELINK_SKIP
-      ARCHIVE DESTINATION ${OPENCV_LIB_INSTALL_PATH} COMPONENT dev
+      ARCHIVE DESTINATION ${OPENCV_LIB_ARCHIVE_INSTALL_PATH} COMPONENT dev
       )
   endif()
   if("${_target_type}" STREQUAL "SHARED_LIBRARY")

cmake/templates/OpenCV.mk.in

@@ -14,7 +14,6 @@ LOCAL_PATH:=$(subst ?,,$(firstword ?$(subst \, ,$(subst /, ,$(call my-dir)))))
 OPENCV_TARGET_ARCH_ABI:=$(TARGET_ARCH_ABI)
 OPENCV_THIS_DIR:=$(patsubst $(LOCAL_PATH)\\%,%,$(patsubst $(LOCAL_PATH)/%,%,$(call my-dir)))
 OPENCV_MK_DIR:=$(dir $(lastword $(MAKEFILE_LIST)))
-OPENCV_LIBS_DIR:=@OPENCV_LIBS_DIR_CONFIGCMAKE@
 OPENCV_3RDPARTY_LIBS_DIR:=@OPENCV_3RDPARTY_LIBS_DIR_CONFIGCMAKE@
 OPENCV_BASEDIR:=@OPENCV_BASE_INCLUDE_DIR_CONFIGCMAKE@
 OPENCV_LOCAL_C_INCLUDES:=@OPENCV_INCLUDE_DIRS_CONFIGCMAKE@
@@ -41,8 +40,10 @@ else
 endif
 
 ifeq ($(OPENCV_LIB_TYPE),SHARED)
+    OPENCV_LIBS_DIR:=@OPENCV_LIBS_DIR_CONFIGCMAKE@
     OPENCV_LIB_SUFFIX:=so
 else
+    OPENCV_LIBS_DIR:=@OPENCV_LIBS_ARCHIVE_DIR_CONFIGCMAKE@
     OPENCV_LIB_SUFFIX:=a
     OPENCV_INSTALL_MODULES:=on
 endif