diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1cb28776a..5a1164db2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -213,13 +213,15 @@ if(BUILD_STATIC)
 endif()
 
 # Check dependencies
-if(NOT TARGET_GLES OR TARGET_DESKTOP_GLES)
-    set(OpenGL_GL_PREFERENCE GLVND) # since CMake 3.11
-    find_package(OpenGL REQUIRED)
-elseif(TARGET_GLES2)
-    find_package(OpenGLES2 REQUIRED)
-else()
-    find_package(OpenGLES3 REQUIRED)
+if(WITH_GL OR TARGET_GL)
+    if(NOT TARGET_GLES OR TARGET_DESKTOP_GLES)
+        set(OpenGL_GL_PREFERENCE GLVND) # since CMake 3.11
+        find_package(OpenGL REQUIRED)
+    elseif(TARGET_GLES2)
+        find_package(OpenGLES2 REQUIRED)
+    else()
+        find_package(OpenGLES3 REQUIRED)
+    endif()
 endif()
 
 # Configuration variables (saved later to configure.h)
diff --git a/src/Magnum/CMakeLists.txt b/src/Magnum/CMakeLists.txt
index 1b05ac225..e89298bb1 100644
--- a/src/Magnum/CMakeLists.txt
+++ b/src/Magnum/CMakeLists.txt
@@ -189,7 +189,9 @@ endif()
 target_include_directories(Magnum PUBLIC
     ${PROJECT_SOURCE_DIR}/src
     ${PROJECT_BINARY_DIR}/src)
-if(BUILD_DEPRECATED AND TARGET_GL) # TODO: remove once compat gets dropped
+if(BUILD_DEPRECATED) # TODO: remove once compat gets dropped
+    # Some deprecated APIs use headers (but not externally defined symbols)
+    # from the GL library, link those includes as well
     target_include_directories(Magnum PUBLIC
         ${PROJECT_SOURCE_DIR}/src/MagnumExternal/OpenGL)
 endif()
@@ -277,7 +279,7 @@ if(BUILD_TESTS)
     target_include_directories(MagnumTestLib PUBLIC
         ${PROJECT_SOURCE_DIR}/src
         ${PROJECT_BINARY_DIR}/src)
-    if(BUILD_DEPRECATED AND TARGET_GL) # TODO: remove once compat gets dropped
+    if(BUILD_DEPRECATED) # TODO: remove once compat gets dropped
         target_include_directories(MagnumTestLib PUBLIC
             ${PROJECT_SOURCE_DIR}/src/MagnumExternal/OpenGL)
     endif()
diff --git a/src/MagnumExternal/CMakeLists.txt b/src/MagnumExternal/CMakeLists.txt
index 211f3ad63..648f729e5 100644
--- a/src/MagnumExternal/CMakeLists.txt
+++ b/src/MagnumExternal/CMakeLists.txt
@@ -26,7 +26,10 @@
 if(WITH_AUDIO)
     add_subdirectory(OpenAL)
 endif()
-if(WITH_GL)
+# Some deprecated APIs use headers (but not externally defined symbols)
+# from the GL library, link those includes as well
+# TODO: remove once compat gets dropped
+if(WITH_GL OR MAGNUM_BUILD_DEPRECATED)
     add_subdirectory(OpenGL)
 endif()
 if(WITH_VK)
diff --git a/src/MagnumExternal/OpenGL/GL/CMakeLists.txt b/src/MagnumExternal/OpenGL/GL/CMakeLists.txt
index 6bc5c6edc..e58bb2e72 100644
--- a/src/MagnumExternal/OpenGL/GL/CMakeLists.txt
+++ b/src/MagnumExternal/OpenGL/GL/CMakeLists.txt
@@ -23,15 +23,20 @@
 #   DEALINGS IN THE SOFTWARE.
 #
 
-# flextGLPlatform.cpp is compiled as part of Magnum*Context libraries in Platform
-add_library(MagnumFlextGLObjects OBJECT flextGL.cpp)
-target_include_directories(MagnumFlextGLObjects PUBLIC $<TARGET_PROPERTY:MagnumGL,INTERFACE_INCLUDE_DIRECTORIES>)
-if(NOT BUILD_STATIC)
-    target_compile_definitions(MagnumFlextGLObjects PRIVATE "FlextGL_EXPORTS")
+# Some deprecated APIs use headers (but not externally defined symbols)
+# from the GL library, link those includes as well
+# TODO: remove once compat gets dropped (condition only)
+if(WITH_GL)
+    # flextGLPlatform.cpp is compiled as part of Magnum*Context libraries in Platform
+    add_library(MagnumFlextGLObjects OBJECT flextGL.cpp)
+    target_include_directories(MagnumFlextGLObjects PUBLIC $<TARGET_PROPERTY:MagnumGL,INTERFACE_INCLUDE_DIRECTORIES>)
+    if(NOT BUILD_STATIC)
+        target_compile_definitions(MagnumFlextGLObjects PRIVATE "FlextGL_EXPORTS")
+    endif()
+    if(NOT BUILD_STATIC OR BUILD_STATIC_PIC)
+        set_target_properties(MagnumFlextGLObjects PROPERTIES POSITION_INDEPENDENT_CODE ON)
+    endif()
+    set_target_properties(MagnumFlextGLObjects PROPERTIES FOLDER "MagnumExternal/OpenGL")
 endif()
-if(NOT BUILD_STATIC OR BUILD_STATIC_PIC)
-    set_target_properties(MagnumFlextGLObjects PROPERTIES POSITION_INDEPENDENT_CODE ON)
-endif()
-set_target_properties(MagnumFlextGLObjects PROPERTIES FOLDER "MagnumExternal/OpenGL")
 
 install(FILES flextGL.h DESTINATION ${MAGNUM_EXTERNAL_INCLUDE_INSTALL_DIR}/OpenGL/GL)