diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b9765be..3b1d8f32 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -76,7 +76,10 @@ set(LUA_MODULES_PATH
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
 
-if(UNIX AND NOT APPLE)
+if(HAIKU)
+  # qsort_r in libgit2 requires this
+  set(CMAKE_EXE_LINKER_FLAGS -lgnu)
+elseif(UNIX AND NOT APPLE)
   set(CMAKE_EXE_LINKER_FLAGS -ldl)
 endif()