Modified the configure script and Makefiles so that systems that do

not include zlib by default will pick it up from the compile line.

scripts/configure

@@ -660,6 +660,7 @@ LIB_SPECS_GRNULL
 LIB_SPECS_NOSTUB
 LIB_SPECS
 INC_SPECS
+ZLIB_FLAG
 EXTRA_LIB_SPECS
 SHLIB_LIB_SPECS
 LDDL_FLAGS
@@ -5043,6 +5044,7 @@ else
 fi
 
 
+ZLIB_FLAG=""
 if test "x$enable_compression" = "xyes" ; then
    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gzopen in -lz" >&5
 $as_echo_n "checking for gzopen in -lz... " >&6; }
@@ -5082,8 +5084,11 @@ fi
 $as_echo "$ac_cv_lib_z_gzopen" >&6; }
 if test "x$ac_cv_lib_z_gzopen" = xyes; then :
 
+
 $as_echo "#define HAVE_ZLIB 1" >>confdefs.h
 
+    	ZLIB_FLAG=" -lz"
+
 fi
 
 fi
@@ -8246,6 +8251,7 @@ fi
 
 
 
+
 fi
 
 if test "$GCC" = "yes" ; then

scripts/configure.in

@@ -185,8 +185,12 @@ AC_ARG_ENABLE(compression,
 [enable_compression=yes])
 
 dnl Check for zlib
+ZLIB_FLAG=""
 if test "x$enable_compression" = "xyes" ; then
-   AC_CHECK_LIB([z],[gzopen],[AC_DEFINE([HAVE_ZLIB],[1],["zlib compression"])])  
+   AC_CHECK_LIB([z],[gzopen],[
+	AC_DEFINE([HAVE_ZLIB],[1],["zlib compression"])
+    	ZLIB_FLAG=" -lz"
+   ])  
 fi
 
 dnl Check for some C99 functions  
@@ -1759,6 +1763,7 @@ if test $usingTcl ; then
 
   AC_SUBST(EXTRA_LIB_SPECS)
   AC_SUBST(LDFLAGS)
+  AC_SUBST(ZLIB_FLAG)
   AC_SUBST(INC_SPECS)
   AC_SUBST(LIB_SPECS)
   AC_SUBST(LIB_SPECS_NOSTUB)

scripts/defs.mak.in

@@ -62,7 +62,7 @@ MCPP		       = @MCPP@
 MSED		       = @MSED@
 RANLIB                 = @RANLIB@
 SHDLIB_EXT             = @SHDLIB_EXT@
-LDDL_FLAGS             = ${LDFLAGS} @LDDL_FLAGS@
+ZLIB_FLAG              = @ZLIB_FLAG@
 LD_RUN_PATH	       = @LD_RUN_PATH@
 LIB_SPECS	       = @LIB_SPECS@
 LIB_SPECS_NOSTUB       = @LIB_SPECS_NOSTUB@