From 355553b0a6d32426ba4f4c8f1b0b701f62868d87 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Wed, 16 Aug 2017 22:49:17 +0000
Subject: [PATCH] cmake: CMP0026 NEW

---
 CMakeLists.txt                     |  5 ++---
 cmake/OpenCVDetectAndroidSDK.cmake |  3 +--
 cmake/OpenCVGenPkgconfig.cmake     | 18 +++++++++---------
 modules/java/CMakeLists.txt        |  3 +--
 4 files changed, 13 insertions(+), 16 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9269469869..36c8a0ca3a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,8 +45,7 @@ else()
 endif()
 
 if(POLICY CMP0026)
-  # silence cmake 3.0+ warnings about reading LOCATION attribute
-  cmake_policy(SET CMP0026 OLD)
+  cmake_policy(SET CMP0026 NEW)
 endif()
 
 if (POLICY CMP0042)
@@ -1017,7 +1016,7 @@ if(HAVE_OPENCL)
     set(__libs "")
     foreach(l ${OPENCL_LIBRARIES})
       if(TARGET ${l})
-        get_target_property(p ${l} LOCATION)
+        get_target_property(p ${l} IMPORTED_LOCATION)
         if(p MATCHES NOTFOUND)
           list(APPEND __libs "${l}")
         else()
diff --git a/cmake/OpenCVDetectAndroidSDK.cmake b/cmake/OpenCVDetectAndroidSDK.cmake
index 7a7053b381..d208f060fa 100644
--- a/cmake/OpenCVDetectAndroidSDK.cmake
+++ b/cmake/OpenCVDetectAndroidSDK.cmake
@@ -309,9 +309,8 @@ macro(add_android_project target path)
             LIBRARY_OUTPUT_DIRECTORY "${android_proj_bin_dir}/libs/${ANDROID_NDK_ABI_NAME}"
             )
 
-        get_target_property(android_proj_jni_location "${JNI_LIB_NAME}" LOCATION)
         if (NOT (CMAKE_BUILD_TYPE MATCHES "debug"))
-            add_custom_command(TARGET ${JNI_LIB_NAME} POST_BUILD COMMAND ${CMAKE_STRIP} --strip-unneeded "${android_proj_jni_location}")
+            add_custom_command(TARGET ${JNI_LIB_NAME} POST_BUILD COMMAND ${CMAKE_STRIP} --strip-unneeded "$<TARGET_FILE:${JNI_LIB_NAME}>")
         endif()
       endif()
 
diff --git a/cmake/OpenCVGenPkgconfig.cmake b/cmake/OpenCVGenPkgconfig.cmake
index c3a6b458fa..f6df095656 100644
--- a/cmake/OpenCVGenPkgconfig.cmake
+++ b/cmake/OpenCVGenPkgconfig.cmake
@@ -46,16 +46,16 @@ endif()
 set(OpenCV_LIB_COMPONENTS_)
 foreach(CVLib ${OpenCV_LIB_COMPONENTS})
 
-  get_target_property(libloc ${CVLib} LOCATION_${CMAKE_BUILD_TYPE})
-  if(libloc MATCHES "3rdparty")
-    set(libpath "\${exec_prefix}/share/OpenCV/3rdparty/${OPENCV_LIB_INSTALL_PATH}")
-  else()
-    set(libpath "\${exec_prefix}/${OPENCV_LIB_INSTALL_PATH}")
+  get_target_property(libname ${CVLib} OUTPUT_NAME_${CMAKE_BUILD_TYPE})
+  if(NOT libname)
+    get_target_property(libname ${CVLib} OUTPUT_NAME)
+  endif()
+  if(NOT libname)
+    set(libname "${CVLib}")
   endif()
-  list(APPEND OpenCV_LIB_COMPONENTS_ "-L${libpath}")
 
-  get_filename_component(libname ${CVLib} NAME_WE)
-  string(REGEX REPLACE "^lib" "" libname "${libname}")
+  set(libpath "\${exec_prefix}/${OPENCV_LIB_INSTALL_PATH}")
+  list(APPEND OpenCV_LIB_COMPONENTS_ "-L${libpath}")
   list(APPEND OpenCV_LIB_COMPONENTS_ "-l${libname}")
 
 endforeach()
@@ -66,7 +66,7 @@ if(OpenCV_EXTRA_COMPONENTS)
     if(TARGET "${extra_component}")
       get_target_property(extra_component_is_imported "${extra_component}" IMPORTED)
       if(extra_component_is_imported)
-        get_target_property(extra_component "${extra_component}" LOCATION)
+        get_target_property(extra_component "${extra_component}" IMPORTED_LOCATION)
       endif()
     endif()
 
diff --git a/modules/java/CMakeLists.txt b/modules/java/CMakeLists.txt
index f336c94f90..ccf96cda36 100644
--- a/modules/java/CMakeLists.txt
+++ b/modules/java/CMakeLists.txt
@@ -331,10 +331,9 @@ if(ANDROID)
 
   # force strip library after the build command
   # because samples and tests will make a copy of the library before install
-  get_target_property(__opencv_java_location ${the_module} LOCATION)
   # Turn off stripping in debug build
   if ( NOT (CMAKE_BUILD_TYPE MATCHES "Debug"))
-    add_custom_command(TARGET ${the_module} POST_BUILD COMMAND ${CMAKE_STRIP} --strip-unneeded "${__opencv_java_location}")
+    add_custom_command(TARGET ${the_module} POST_BUILD COMMAND ${CMAKE_STRIP} --strip-unneeded "$<TARGET_FILE:${the_module}>")
   endif()
 endif()