Add JsonCpp targets if missing (raceintospace#869)

CMakeLists.txt

@@ -98,4 +98,4 @@ else("${lc_CMAKE_BUILD_TYPE}" STREQUAL "debug")
 endif("${lc_CMAKE_BUILD_TYPE}" STREQUAL "debug")
 
 add_custom_target(tag
-	COMMAND ${GIT} tag -a v${raceintospace_VERSION_FULL})
+	COMMAND ${GIT} tag -a v${raceintospace_VERSION_FULL})

cmake/FixJsonCppTargets.cmake

@@ -0,0 +1,9 @@
+if (NOT TARGET JsonCpp::JsonCpp)
+    if (TARGET jsoncpp_static)
+        add_library(JsonCpp::JsonCpp INTERFACE IMPORTED)
+        set_target_properties(JsonCpp::JsonCpp PROPERTIES INTERFACE_LINK_LIBRARIES "jsoncpp_static")
+    elseif (TARGET jsoncpp_lib)
+        add_library(JsonCpp::JsonCpp INTERFACE IMPORTED)
+        set_target_properties(JsonCpp::JsonCpp PROPERTIES INTERFACE_LINK_LIBRARIES "jsoncpp_lib")
+    endif ()
+endif ()

src/game/CMakeLists.txt

@@ -93,6 +93,7 @@ find_package(Ogg REQUIRED)
 find_package(unofficial-theora REQUIRED) # name from vcpkg ports
 find_package(Vorbis REQUIRED)
 find_package(jsoncpp REQUIRED)
+include(FixJsonCppTargets)
 find_package(cereal REQUIRED)
 find_package(Boost REQUIRED)
 find_package(ZLIB REQUIRED)

src/utils/CMakeLists.txt

@@ -6,6 +6,7 @@ set(EXECUTABLE_OUTPUT_PATH "${CMAKE_BINARY_DIR}/utils")
 find_package(PNG REQUIRED)
 find_package(ZLIB REQUIRED)
 find_package(jsoncpp REQUIRED)
+include(FixJsonCppTargets)
 
 add_executable(but2png EXCLUDE_FROM_ALL but2png.c)
 set_target_properties(but2png PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD 1)