use LD_LIBRARY_PATH rather than -rpath

CMakeLists.txt

@@ -122,8 +122,7 @@ function(give_options target)
                         -ffp-contract=fast
                         -fno-signed-zeros
                         -fno-trapping-math
-                        -freciprocal-math
-                        -Wl,$<$<BOOL:${TOWNENGINE_HOT_RELOAD}>:-rpath ./>)
+                        -freciprocal-math)
 
                 set(BUILD_FLAGS_RELEASE
                         -O3
@@ -244,7 +243,7 @@ function(use_townengine target sources output_directory data_dir)
                 string(JOIN "\n" TOWNENGINE_BOOTSTRAP
                                  "#!/bin/env sh"
                                  "cd \"$(dirname \"$0\")\""
-                                 "./launcher --data-dir ${data_dir}"
+                                 "LD_LIBRARY_PATH=./ ./launcher --data-dir ${data_dir}"
                                  "")
 
                 FILE(GENERATE OUTPUT ${output_directory}/${target}