Rename CMake module export to OpenXR. Add export target that countains only headers

Author: matthieucoquet

src/loader/CMakeLists.txt

@@ -249,7 +249,7 @@ install(TARGETS openxr-all-supported EXPORT openxr_loader_export)
 export(
     EXPORT openxr_loader_export
     FILE ${CMAKE_CURRENT_BINARY_DIR}/OpenXRTargets.cmake
-    NAMESPACE xr::
+    NAMESPACE OpenXR::
 )
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
@@ -261,7 +261,7 @@ endif()
 install(
     EXPORT openxr_loader_export
     FILE OpenXRTargets.cmake
-    NAMESPACE xr::
+    NAMESPACE OpenXR::
     DESTINATION ${TARGET_DESTINATION}
 )
 

src/loader/OpenXRConfig.cmake.in

@@ -4,6 +4,9 @@
 # The header openxr.h is not added to the export target so we add the include directory here
 include("${CMAKE_CURRENT_LIST_DIR}/OpenXRTargets.cmake")
 set_and_check(OpenXR_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
-target_include_directories(xr::openxr_loader INTERFACE ${OpenXR_INCLUDE_DIR})
+target_include_directories(OpenXR::openxr_loader INTERFACE ${OpenXR_INCLUDE_DIR})
+
+add_library(OpenXR::headers INTERFACE IMPORTED)
+target_include_directories(OpenXR::headers SYSTEM INTERFACE ${OpenXR_INCLUDE_DIR})
 
 check_required_components(OpenXR)