Fix musl build by using fts_* from external library

musl does not support fts. There is however a standalone package that
can be used, but it must be linked against. This commit adds a check
that makes sure to link to the external library if it is required.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 5a481e39f..fa7de5cc2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -213,6 +213,8 @@ target_link_libraries(
     KF6::KCMUtils
 
     KF6::MoreTools
+
+    ${FTS_LIB}
 )
 
 if(HAVE_BALOO)