Description: Make cmake enable options mandatory if turned on.
Author: <unknown>

Index: pkg-tigervnc/CMakeLists.txt
===================================================================
--- pkg-tigervnc.orig/CMakeLists.txt
+++ pkg-tigervnc/CMakeLists.txt
@@ -141,8 +141,8 @@ find_package(ZLIB REQUIRED)
 find_package(Pixman REQUIRED)
 
 # Check for gettext
-option(ENABLE_NLS "Enable translation of program messages" ON)
-if(ENABLE_NLS)
+option(ENABLE_NLS "Enable translation of program messages")
+if(NOT DEFINED ENABLE_NLS OR ENABLE_NLS)
   # Tools
   find_package(Gettext)
 
@@ -176,8 +176,14 @@ if(ENABLE_NLS)
   endif()
 
   if(NOT GETTEXT_FOUND OR NOT ICONV_FOUND)
-    message(WARNING "Gettext NOT found.  Native Language Support disabled.")
-    set(ENABLE_NLS 0)
+    if(DEFINED ENABLE_NLS)
+      message(FATAL_ERROR "Native Language Support requested, but gettext NOT found!")
+    else()
+      message(WARNING "Gettext NOT found.  Native Language Support disabled.")
+      set(ENABLE_NLS 0)
+    endif()
+  else()
+    set(ENABLE_NLS 1)
   endif()
 endif()
 
@@ -261,13 +267,19 @@ if(UNIX AND NOT APPLE)
 endif()
 
 # Check for GNUTLS library
-option(ENABLE_GNUTLS "Enable protocol encryption and advanced authentication" ON)
-if(ENABLE_GNUTLS)
+option(ENABLE_GNUTLS "Enable protocol encryption and advanced authentication")
+if(NOT DEFINED ENABLE_GNUTLS OR ENABLE_GNUTLS)
   find_package(GnuTLS)
   if (GNUTLS_FOUND)
     include_directories(${GNUTLS_INCLUDE_DIR})
     add_definitions("-DHAVE_GNUTLS")
     add_definitions(${GNUTLS_DEFINITIONS})
+  else()
+    if(DEFINED ENABLE_GNUTLS)
+      message(FATAL_ERROR "GnuTLS support requested, but library could not be found!")
+    else()
+      message(WARNING "GnuTLS NOT found. SSL support disabled.")
+    endif()
   endif()
 endif()