4 files changed, 17 insertions, 5 deletions
diff --git a/src/supplemental/base64/CMakeLists.txt b/src/supplemental/base64/CMakeLists.txt
index 3ccac7ff..297a5478 100644
--- a/src/supplemental/base64/CMakeLists.txt
+++ b/src/supplemental/base64/CMakeLists.txt
@@ -8,5 +8,9 @@
 # found online at https://opensource.org/licenses/MIT.
 #
 
-set(BASE64_SOURCES supplemental/base64/base64.c supplemental/base64/base64.h)
+if (NNG_SUPP_BASE64)
+        set(BASE64_SOURCES
+                supplemental/base64/base64.c
+                supplemental/base64/base64.h)
+endif()
 set(NNG_SOURCES ${NNG_SOURCES} ${BASE64_SOURCES} PARENT_SCOPE)
diff --git a/src/supplemental/http/CMakeLists.txt b/src/supplemental/http/CMakeLists.txt
index dff06d70..2c8d6a68 100644
--- a/src/supplemental/http/CMakeLists.txt
+++ b/src/supplemental/http/CMakeLists.txt
@@ -8,10 +8,12 @@
 # found online at https://opensource.org/licenses/MIT.
 #
 
+if (NNG_SUPP_HTTP)
 set(HTTP_SOURCES
         supplemental/http/http.c
         supplemental/http/http_msg.c
         supplemental/http/server.c
         supplemental/http/client.c
         supplemental/http/http.h)
+endif()
 set(NNG_SOURCES ${NNG_SOURCES} ${HTTP_SOURCES} PARENT_SCOPE)
diff --git a/src/supplemental/sha1/CMakeLists.txt b/src/supplemental/sha1/CMakeLists.txt
index 8496777b..9600a268 100644
--- a/src/supplemental/sha1/CMakeLists.txt
+++ b/src/supplemental/sha1/CMakeLists.txt
@@ -8,5 +8,9 @@
 # found online at https://opensource.org/licenses/MIT.
 #
 
-set(SHA1_SOURCES supplemental/sha1/sha1.c supplemental/sha1/sha1.h)
+if (NNG_SUPP_SHA1)
+        set(SHA1_SOURCES
+                supplemental/sha1/sha1.c
+                supplemental/sha1/sha1.h)
+endif()
 set(NNG_SOURCES ${NNG_SOURCES} ${SHA1_SOURCES} PARENT_SCOPE)
diff --git a/src/supplemental/websocket/CMakeLists.txt b/src/supplemental/websocket/CMakeLists.txt
index f3283257..5ddd6cb1 100644
--- a/src/supplemental/websocket/CMakeLists.txt
+++ b/src/supplemental/websocket/CMakeLists.txt
@@ -8,7 +8,9 @@
 # found online at https://opensource.org/licenses/MIT.
 #
 
-set(WEBSOCKET_SOURCES
-        supplemental/websocket/websocket.c
-        supplemental/websocket/websocket.h)
+if (NNG_SUPP_WEBSOCKET)
+        set(WEBSOCKET_SOURCES
+                supplemental/websocket/websocket.c
+                supplemental/websocket/websocket.h)
+endif()
 set(NNG_SOURCES ${NNG_SOURCES} ${WEBSOCKET_SOURCES} PARENT_SCOPE)