From 504eeea5148510645a884688d04434373054d501 Mon Sep 17 00:00:00 2001
From: Alexander Neumann <30894796+Neumann-A@users.noreply.github.com>
Date: Fri, 10 Jan 2020 00:26:27 +0100
Subject: [PATCH] Map MinSizeRel and RelWithDebInfo correctly (#6393)

* Map MinSizeRel and RelWithDebInfo to Release by default

* switch to CMAKE_CONFIGURATION_TYPES

* changed mapping slightly

* add empty list element to the mapping

* more comments and an option to turn verbose messages on.

* removed line info.
It would require the file name to make sense out of it.
---
 scripts/buildsystems/vcpkg.cmake | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/scripts/buildsystems/vcpkg.cmake b/scripts/buildsystems/vcpkg.cmake
index 87a206eb11..e549f3fa11 100644
--- a/scripts/buildsystems/vcpkg.cmake
+++ b/scripts/buildsystems/vcpkg.cmake
@@ -1,6 +1,10 @@
 # Mark variables as used so cmake doesn't complain about them
 mark_as_advanced(CMAKE_TOOLCHAIN_FILE)
 
+# VCPKG toolchain options. 
+option(VCPKG_VERBOSE "Enables messages from the VCPKG toolchain for debugging purposes." OFF)
+mark_as_advanced(VCPKG_VERBOSE)
+
 # Determine whether the toolchain is loaded during a try-compile configuration
 get_property(_CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
 
@@ -22,6 +26,24 @@ if(VCPKG_TOOLCHAIN)
     return()
 endif()
 
+if(DEFINED CMAKE_CONFIGURATION_TYPES) #Generating with a multi config generator
+    #If CMake does not have a mapping for MinSizeRel and RelWithDebInfo in imported targets
+    #it will map those configuration to the first valid configuration in CMAKE_CONFIGURATION_TYPES.
+    #By default this is the debug configuration which is wrong. 
+    if(NOT DEFINED CMAKE_MAP_IMPORTED_CONFIG_MINSIZEREL)
+        set(CMAKE_MAP_IMPORTED_CONFIG_MINSIZEREL "MinSizeRel;Release;")
+        if(VCPKG_VERBOSE)
+            message(STATUS "VCPKG-Info: CMAKE_MAP_IMPORTED_CONFIG_MINSIZEREL set to MinSizeRel;Release;")
+        endif()
+    endif()
+    if(NOT DEFINED CMAKE_MAP_IMPORTED_CONFIG_RELWITHDEBINFO)
+        set(CMAKE_MAP_IMPORTED_CONFIG_RELWITHDEBINFO "RelWithDebInfo;Release;")
+        if(VCPKG_VERBOSE)
+            message(STATUS "VCPKG-Info: CMAKE_MAP_IMPORTED_CONFIG_RELWITHDEBINFO set to RelWithDebInfo;Release;")
+        endif()
+    endif()
+endif()
+
 if(VCPKG_TARGET_TRIPLET)
 elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Ww][Ii][Nn]32$")
     set(_VCPKG_TARGET_TRIPLET_ARCH x86)