Also install the libraries and headers when building static libraries.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6680e8f..e32fa33 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -180,13 +180,11 @@
 
   install (TARGETS bro RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
 
-  if(BUILD_SHARED_LIBS)
-    if(WIN32)
-      install(TARGETS ${BROTLI_LIBRARIES_CORE} RUNTIME DESTINATION bin)
-    else()
-      install(TARGETS ${BROTLI_LIBRARIES_CORE} LIBRARY DESTINATION lib)
-      install(DIRECTORY ${BROTLI_INCLUDE_DIRS}/brotli DESTINATION include)
-    endif()
+  if(WIN32)
+    install(TARGETS ${BROTLI_LIBRARIES_CORE} RUNTIME DESTINATION bin)
+  else()
+    install(TARGETS ${BROTLI_LIBRARIES_CORE} LIBRARY DESTINATION lib)
+    install(DIRECTORY ${BROTLI_INCLUDE_DIRS}/brotli DESTINATION include)
   endif()
 
 endif()