diff -ur plt-4.1.3/src/configure plt-4.1.3.new/src/configure
--- plt-4.1.3/src/configure	2008-11-17 02:34:23.000000000 +0700
+++ plt-4.1.3.new/src/configure	2009-01-16 17:08:56.000000000 +0700
@@ -5802,6 +5802,7 @@
     LIBS="$LIBS -rdynamic"
     DYN_CFLAGS="-fPIC"
     GC_THREADS_FLAG="-DGC_LINUX_THREADS"
+    LIBMZSCHEME_DEP="-ldl -lm"
     # PPC: X11 librares are not found
     case `$UNAME -m` in
       #Required for CentOS 4.6
diff -ur plt-4.1.3/src/mred/Makefile.in plt-4.1.3.new/src/mred/Makefile.in
--- plt-4.1.3/src/mred/Makefile.in	2008-11-17 02:34:13.000000000 +0700
+++ plt-4.1.3.new/src/mred/Makefile.in	2009-01-16 17:09:28.000000000 +0700
@@ -125,7 +125,7 @@
 	$(MREDLINKER) $(MREDLDFLAGS) $(MRSTATIC) -o mred@CGC@ $(MREDOBJECTS) $(MREDLDLIBS) $(MRSTATIC_STUB)
 
 libmred.@LIBSFX@: $(WXLIBSNORM)
-	$(AR) $(ARFLAGS) libmred.@LIBSFX@ $(WXLIBSNORM) @LIBMRED_DEP@
+	$(AR) $(ARFLAGS) libmred.@LIBSFX@ $(WXLIBSNORM) @LIBMRED_DEP@ @LDFLAGS@ $(LDLIBS)
 
 MRFW = PLT_MrEd.framework/Versions/$(FWVERSION)/PLT_MrEd
 MRFWRES = PLT_MrEd.framework/Versions/$(FWVERSION)/Resources/PLT_MrEd.rsrc
diff -ur plt-4.1.3/src/mzscheme/gc2/Makefile.in plt-4.1.3.new/src/mzscheme/gc2/Makefile.in
--- plt-4.1.3/src/mzscheme/gc2/Makefile.in	2008-11-17 02:34:23.000000000 +0700
+++ plt-4.1.3.new/src/mzscheme/gc2/Makefile.in	2009-01-16 17:26:13.000000000 +0700
@@ -355,7 +355,7 @@
 EXTRA_OBJS_L = ../src/gmp.@LTO@ $(@FOREIGN_IF_USED@_OBJSLIB)
 
 ../libmzscheme3m.@LIBSFX@: $(OBJS) $(EXTRA_OBJS_T) jit.@LTO@ gc2.@LTO@
-	$(AR) $(ARFLAGS) ../libmzscheme3m.@LIBSFX@ $(OBJS) $(EXTRA_OBJS_L) jit.@LTO@ gc2.@LTO@
+	$(AR) $(ARFLAGS) ../libmzscheme3m.@LIBSFX@ $(OBJS) $(EXTRA_OBJS_L) jit.@LTO@ gc2.@LTO@ @LDFLAGS@ @LIBS@
 	$(RANLIB) ../libmzscheme3m.@LIBSFX@
 
 ../libmzscheme_compact_gc.@LIBSFX@: $(OBJS) $(EXTRA_OBJS_T) jit_compact_gc.@LTO@ compact_gc.@LTO@