Add -lm for ecpg/pgtypeslib/Makefile link so -lm isn't required for ecpg

compiles.

src/interfaces/ecpg/pgtypeslib/Makefile

@@ -4,7 +4,7 @@
 #
 # Copyright (c) 1994, Regents of the University of California
 #
-# $Header: /cvsroot/pgsql/src/interfaces/ecpg/pgtypeslib/Makefile,v 1.10 2003/08/06 02:19:51 momjian Exp $
+# $Header: /cvsroot/pgsql/src/interfaces/ecpg/pgtypeslib/Makefile,v 1.11 2003/08/07 04:03:18 momjian Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -17,6 +17,7 @@ SO_MAJOR_VERSION= 1
 SO_MINOR_VERSION= 0
 
 override CPPFLAGS := -I$(top_srcdir)/src/interfaces/ecpg/include -I$(top_srcdir)/src/include/utils $(CPPFLAGS) $(THREAD_CFLAGS) -g
+SHLIB_LINK += -lm
 
 OBJS= numeric.o datetime.o common.o dt_common.o timestamp.o interval.o \
       $(filter rint.o, $(LIBOBJS))