Use set_property() to specify imported target's link libraries, instead of

target_link_libraries() that falters with older CMake versions.

Rubber-stamped by Adrian Perez de Castro.

Author: zdobersek

cmake/FindEGL.cmake

@@ -50,7 +50,8 @@ mark_as_advanced(EGL_INCLUDE_DIR EGL_LIBRARY)
 if (EGL_LIBRARIES AND NOT TARGET GL::egl)
     add_library(GL::egl INTERFACE IMPORTED)
     if (TARGET PkgConfig::EGL)
-        target_link_libraries(GL::egl INTERFACE PkgConfig::EGL)
+        set_property(TARGET GL::egl PROPERTY
+            INTERFACE_LINK_LIBRARIES PkgConfig::EGL)
     else ()
         set_property(TARGET GL::egl PROPERTY
             INTERFACE_LINK_LIBRARIES ${EGL_LIBRARY})

cmake/FindLibxkbcommon.cmake

@@ -48,7 +48,8 @@ find_library(LIBXKBCOMMON_LIBRARY
 if (LIBXKBCOMMON_LIBRARY AND NOT TARGET XkbCommon::libxkbcommon)
     add_library(XkbCommon::libxkbcommon INTERFACE IMPORTED)
     if (TARGET PkgConfig::LIBXKBCOMMON)
-        target_link_libraries(XkbCommon::libxkbcommon INTERFACE PkgConfig::LIBXKBCOMMON)
+        set_property(TARGET XkbCommon::libxkbcommon PROPERTY
+            INTERFACE_LINK_LIBRARIES PkgConfig::LIBXKBCOMMON)
     else ()
         set_property(TARGET XkbCommon::libxkbcommon PROPERTY
             INTERFACE_LINK_LIBRARIES ${LIBXKBCOMMON_LIBRARY})