Since glew.h is directly used/included in ROOT's public interfaces, t…

…he correct way will be to ship it as well with ROOT

builtins/glew/CMakeLists.txt

@@ -33,19 +33,30 @@ if(APPLE)
   endif()
 endif()
 
-add_library(GLEW STATIC ${GLEW_HEADERS} ${GLEW_SOURCES})
+if (WIN32)
+  set (DLL_PREFIX lib)
+endif ()
+
+add_library(GLEW SHARED ${GLEW_HEADERS} ${GLEW_SOURCES})
 target_compile_options(GLEW PRIVATE ${GLEW_DEFINITIONS})
 target_include_directories(GLEW INTERFACE $<BUILD_INTERFACE:${GLEW_INCLUDE_DIR}>)
 target_link_libraries(GLEW PRIVATE OpenGL::GL OpenGL::GLU)
-set_target_properties(GLEW PROPERTIES COMPILE_DEFINITIONS "GLEW_STATIC")
+set_target_properties (GLEW PROPERTIES COMPILE_DEFINITIONS "GLEW_BUILD" PREFIX "${DLL_PREFIX}")
 if(NOT MSVC)
   target_compile_options(GLEW PRIVATE -fPIC)
 else()
-  target_compile_definitions (GLEW PRIVATE "GLEW_STATIC")
+  target_compile_definitions (GLEW PRIVATE "GLEW_BUILD")
 endif()
 add_library(GLEW::GLEW ALIAS GLEW)
 
 set(GLEW_LIBRARY $<TARGET_FILE:GLEW> CACHE INTERNAL "")
 set(GLEW_LIBRARIES GLEW::GLEW CACHE INTERNAL "")
 
 set_property(GLOBAL APPEND PROPERTY ROOT_BUILTIN_TARGETS GLEW::GLEW)
+
+install(TARGETS GLEW
+        LIBRARY DESTINATION lib
+        ARCHIVE DESTINATION lib
+        )
+
+ROOT_INSTALL_HEADERS()