Add -lexecinfo for BSD

src/lay/lay/lay.pro

@@ -179,6 +179,10 @@ win32 {
   LIBS += -lpsapi -ldbghelp
 }
 
+*bsd* {
+  LIBS += -lexecinfo
+}
+
 # Note: this accounts for UI-generated headers placed into the output folders in
 # shadow builds:
 INCLUDEPATH += $$DESTDIR/laybasic/laybasic

src/tl/tl.pro

@@ -1,6 +1,9 @@
 
 TEMPLATE = subdirs
 SUBDIRS = tl unit_tests
+*bsd* {
+    LIBS += -lexecinfo
+}
 
 unit_tests.depends += tl