Fix hiredis being built when not needed

fixes #5125

diff --git a/third-party/CMakeLists.txt b/third-party/CMakeLists.txt
index 17a4ab35c6488d1b1dd8db6c6fd51679ab1bff38..2606e50387ac34e0ae538eebd83ab628e71ea592 100644 (file)
--- a/third-party/CMakeLists.txt
+++ b/third-party/CMakeLists.txt
@@ -25,5 +25,8 @@ if(UNIX OR CYGWIN)
   add_subdirectory(execvpe)
 endif()
 
-add_subdirectory(socketpair)
-add_subdirectory(hiredis)
+if(ICINGA2_WITH_REDIS)
+  add_subdirectory(hiredis)
+endif()
+
+add_subdirectory(socketpair)
\ No newline at end of file