diff --git a/cryptopp/sources.cmake b/cryptopp/sources.cmake
index 7918f03..58d74e2 100644
--- a/cryptopp/sources.cmake
+++ b/cryptopp/sources.cmake
@@ -182,6 +182,14 @@ set(cryptopp_SOURCES
     zlib.cpp
 )
 
+if (CRYPTOPP_PEM_PACK)
+    list(APPEND cryptopp_SOURCES
+        pem-com.cpp
+        pem-rd.cpp
+        pem-wr.cpp
+    )
+endif()
+
 # ***** Library headers *****
 set(cryptopp_HEADERS
     3way.h
@@ -374,6 +382,13 @@ set(cryptopp_HEADERS
     zlib.h
 )
 
+if (CRYPTOPP_PEM_PACK)
+    list(APPEND cryptopp_HEADERS
+        pem-com.h
+        pem.h
+    )
+endif()
+
 # ***** Test sources *****
 set(cryptopp_SOURCES_TEST
     # adhoc.cpp