Revert an attempt to make corrade-rc working on WinRT.

It was based off an old mailing list thread but apparently the change
never materialized, as the executable reuquires vcruntime140_app.dll to
run and that one is available only when running an UWP app.

Sigh. Should have tested better.

This reverts commit 1a71898.
This reverts commit 53b5fcd.

CMakeLists.txt

@@ -152,7 +152,7 @@ endif()
 
 # Initialize macros etc.
 set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/modules/" ${CMAKE_MODULE_PATH})
-if(CMAKE_CROSSCOMPILING AND NOT CORRADE_TARGET_WINDOWS_RT)
+if(CMAKE_CROSSCOMPILING)
     find_program(CORRADE_RC_EXECUTABLE corrade-rc)
     if(NOT CORRADE_RC_EXECUTABLE)
         message(FATAL_ERROR "Native `corrade-rc` executable, which is needed when crosscompiling, was not found")

doc/building-corrade.dox

@@ -659,25 +659,28 @@ git submodule update --init
 @m_class{m-block m-primary}
 
 @par Native build of corrade-rc
-    For all cross-compilation except the UWP / Windows RT build, you need to
-    have a native version of Corrade installed, because Corrade needs to run
-    the `corrade-rc` utility on the host system as part of the build process.
-    If native version of `corrade-rc` is not found on the system,
-    cross-compilation will fail. If `corrade-rc` is not in `PATH`, point CMake
-    to it using `-DCORRADE_RC_EXECUTABLE=/path/to/corrade-rc`.
+    You also need to have a native version of Corrade installed, because
+    Corrade needs to run `corrade-rc` utility on the host system as part of the
+    build process. If native version of `corrade-rc` is not found on the
+    system, cross-compilation will fail. If `corrade-rc` is not in `PATH`,
+    point CMake to it using `-DCORRADE_RC_EXECUTABLE=/path/to/corrade-rc`.
 
-@subsection building-corrade-cross-winrt Cross-compiling for UWP / Windows RT
+@subsection building-corrade-cross-winrt Cross-compiling for Windows RT
 
 As said above, you need a native build of the `corrade-rc` executable. The
 below script assumes that a native Corrade build is installed in `C:/Sys` and
 the installation path for WinRT is in `C:/Sys-winrt`. You need at least Windows
 8.1, Visual Studio 2015 and Windows 8.1 Store/Phone SDK installed. Because
 WinRT applications run in a sandbox, it's recommended to build the library as
-static so you don't have to bundle all the DLLs. Example is below:
+static so you don't have to bundle all the DLLs. Example is below, you can omit
+specifying `CORRADE_RC_EXECUTABLE` if
+@ref building-corrade-cross-rc "natively-built corrade-rc" is accessible
+through `PATH`.
 
 @code{.bat}
 mkdir build-winrt && cd build-winrt
 cmake .. ^
+    -DCORRADE_RC_EXECUTABLE="C:/Sys/bin/corrade-rc.exe" ^
     -DCMAKE_INSTALL_PREFIX="C:/Sys-winrt" ^
     -DBUILD_STATIC=ON ^
     -DCMAKE_SYSTEM_NAME=WindowsStore ^

doc/corrade-changelog.dox

@@ -33,11 +33,6 @@ namespace Corrade {
 
 @subsection corrade-changelog-latest-buildsystem Build system
 
--   On UWP / Windows RT builds it's not needed to build a native version of
-    @ref corrade-rc "corrade-rc" anymore, it's now generated as a native
-    executable during the crosscompilation build (see
-    [mosra/corrade#81](https://github.com/mosra/corrade/issues/81) and
-    [mosra/corrade#82](https://github.com/mosra/corrade/pull/82))
 -   Fixed compilation of the @ref main "Corrade::Main" library on i686 MinGW
 
 @subsection corrade-changelog-latest-documentation Documentation

src/Corrade/Utility/CMakeLists.txt

@@ -171,9 +171,15 @@ if(WITH_UTILITY)
     add_library(Corrade::Utility ALIAS CorradeUtility)
 endif()
 
-# On Windows RT / UWP the corrade-rc has VS_WINRT_COMPONENT set and thus we
-# don't need a separate native build
-if(NOT CMAKE_CROSSCOMPILING OR CORRADE_TARGET_WINDOWS_RT)
+# TODO: https://cmake.org/pipermail/cmake-developers/2015-January/024242.html
+# mentions that in the future it might be possible to not require external
+# corrade-rc when generating WinRT targets by setting
+#  set_target_properties(corrade-rc PROPERTIES VS_WINRT_COMPONENT OFF)
+# Then this would be if(NOT CMAKE_CROSSCOMPILING OR CORRADE_TARGET_WINDOWS_RT).
+# However, it seems like this feature never materialized, as doing this will
+# result in corrade-rc that's looking for vcruntime140_app.dll in order to be
+# run. Last checked: Nov 2019.
+if(NOT CMAKE_CROSSCOMPILING)
     # Sources for standalone corrade-rc
     set(CorradeUtilityRc_SRCS
         Arguments.cpp
@@ -219,9 +225,6 @@ if(NOT CMAKE_CROSSCOMPILING OR CORRADE_TARGET_WINDOWS_RT)
         target_link_libraries(corrade-rc PRIVATE ${CMAKE_DL_LIBS})
     endif()
     set_target_properties(corrade-rc PROPERTIES FOLDER "Corrade/Utility")
-    if(CORRADE_TARGET_WINDOWS_RT)
-        set_target_properties(corrade-rc PROPERTIES VS_WINRT_COMPONENT OFF)
-    endif()
     install(TARGETS corrade-rc DESTINATION ${CORRADE_BINARY_INSTALL_DIR})
 
     # Corrade::rc target alias for superprojects