diff --git a/CMakeLists.txt b/CMakeLists.txt
index 922a038..d5052f0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -403,6 +403,9 @@ if (NOT GFLAGS_IS_SUBPROJECT)
   set (CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
   set (CMAKE_ARCHIVE_OUTPUT_DIRECTORY "lib")
 endif ()
+# Set postfixes for generated libraries based on buildtype.
+set(CMAKE_RELEASE_POSTFIX "")
+set(CMAKE_DEBUG_POSTFIX "_debug")
 
 # ----------------------------------------------------------------------------
 # installation directories