替换CMake：LOCATION_ <config>

Question

我是LOCATION_<CONFIG>目标媒体资源的快乐用户。我已经使用了一段时间了：

foreach(cfg ${CMAKE_CONFIGURATION_TYPES})
  get_target_property(library_dll ${library} LOCATION_${cfg})
  string(REPLACE .dll .pdb library_pdb ${library_dll})
  string(TOLOWER ${cfg} lcfg)
  if(lcfg STREQUAL "debug" OR lcfg STREQUAL "relwithdebinfo")
    install (FILES ${library_pdb}
      DESTINATION ${GDCM_INSTALL_BIN_DIR}
      COMPONENT DebugDevel
      CONFIGURATIONS ${cfg}
      )
  endif()
endforeach()

请参阅：

• https://github.com/malaterre/GDCM/blob/master/CMake/InstallMacros.cmake#L61-L75

这是从错误跟踪器中记录的：

• https://public.kitware.com/Bug/view.php?id=11671#c24538

但是外部项目想要使用：

if(POLICY CMP0026)
  cmake_policy(SET CMP0026 NEW)
endif()

这意味着我不得不找到旧的LOCATION_<CONFIG>目标属性解决方案的替代方案。

在当前CMake（其中CMP0026 NEW）中重写此宏以避免以下错误的正确方法是什么？

CMake Error at CMake/InstallMacros.cmake:65 (get_target_property):
The LOCATION property may not be read from target "gdcmCommon". Use the
target name directly with add_custom_command, or use the generator
expression $<TARGET_FILE>, as appropriate.

Call Stack (most recent call first):
Source/Common/CMakeLists.txt:219 (install_pdb)

Answer 1

您可以将@Tsyvarev评论的内容减少到

const char* delim = "";
for (auto const& pair : pairs) {
    std::cout << delim << pair; // now, our point of definition does include
                                // our operator<<() declaration, we don't need ADL
    delim = ", ";
}

使用informational generator expressions。