diff --git a/build/libtool.m4 b/build/libtool.m4
index 56658ccbb4d..4d948b9078d 100644
--- a/build/libtool.m4
+++ b/build/libtool.m4
@@ -1532,10 +1532,6 @@ dgux*)
   shlibpath_var=LD_LIBRARY_PATH
   ;;
 
-freebsd1*)
-  dynamic_linker=no
-  ;;
-
 freebsd* | dragonfly*)
   # DragonFly does not have aout.  When/if they implement a new
   # versioning mechanism, adjust this.
@@ -5843,10 +5839,6 @@ _LT_EOF
       _LT_AC_TAGVAR(hardcode_shlibpath_var, $1)=no
       ;;
 
-    freebsd1*)
-      _LT_AC_TAGVAR(ld_shlibs, $1)=no
-      ;;
-
     # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
     # support.  Future versions do this automatically, but an explicit c++rt0.o
     # does not break anything, and helps significantly (at the cost of a little