flexfax: HylaFAX 4.0pl2: libtiff needs to link against libz

["Jonathan I. Kamens" <jik@kamens.brookline.ma.us>]

At least on my machine (Linux with kernel version 2.0.36, with various
libraries that I've compiled and installed myself), the TIFF libraries
depend on the Z libraries.  Therefore, in order to make the HylaFAX
configure script work properly, I had to move the block that checks
for TIFF support after the block that checks for Z support, and then
add the Z libraries to the link line when compiling the TIFF test
program.  I.e., here's a patch:

--- configure	1998/11/30 20:11:41	1.3
+++ configure	1998/11/30 20:30:13	1.4
@@ -2807,65 +2807,6 @@
 fi
 Note "Done checking system libraries."
 
-Note ""
-Note "Checking TIFF support."
-#
-# Verify library is compatible.
-#
-cat>t.c<<EOF
-#include "tiffio.h"
-main()
-{
-    if (TIFFLIB_VERSION < 19960307) {     /* check include file version */
-	printf("old include files: version %u\n", TIFFLIB_VERSION);
-        exit(-1);
-    }
-    if (strncmp(TIFFGetVersion(), "LIBTIFF, Version 3.4", 20) != 0) {
-	printf("old library: version %s\n", TIFFGetVersion());
-	exit(-1);
-    } else
-	exit(0);
-}
-EOF
-capture cat t.c
-if runMake t "t:; \${CC} \${CVERSION} -I${OTIFFINC} t.c ${LIBTIFF} ${MACHDEPLIBS}" && capture ./a.out; then
-    Note "Using TIFF include files from $OTIFFINC"
-    Note "Using pre-built TIFF library $LIBTIFF"
-else
-    cat 1>&2 <<EOF
-
-Incompatible/missing TIFF Library.
-
-Compilation or execution of the following test program failed:
-
-----------------------------------------------------------
-EOF
-    cat t.c 1>&2
-    cat 1>&2 <<EOF
-----------------------------------------------------------
-
-With:
-
-TIFFINC=${OTIFFINC}
-LIBTIFF=${LIBTIFF}
-
-The above program checks the version of the TIFF library to ensure it
-is suitable for use with HylaFAX.  HylaFAX ${VERSION} requires a recent
-TIFF software distribution; one distributed March 7, 1996 or later.  If
-you do not have up to date TIFF software on your system then you can
-retrieve it from the location where you obtained this software.
-Otherwise, if you have the right software, verify that you have the
-TIFFINC and LIBTIFF configuration parameters set correctly for your
-system (see above) and that any environment variables are setup that
-are needed to locate a libtiff DSO at runtime (e.g. LD_LIBRARY_PATH).
-Also be sure that any relative pathnames are made relative to the top
-of the build area.
-
-EOF
-    boom
-fi
-Note "Done checking TIFF support."
-
 if [ $ZLIB = no ]; then
     Note ""
     Note "Checking ZLIB support."
@@ -2926,6 +2867,65 @@
     fi
     Note "Done checking ZLIB support."
 fi
+
+Note ""
+Note "Checking TIFF support."
+#
+# Verify library is compatible.
+#
+cat>t.c<<EOF
+#include "tiffio.h"
+main()
+{
+    if (TIFFLIB_VERSION < 19960307) {     /* check include file version */
+	printf("old include files: version %u\n", TIFFLIB_VERSION);
+        exit(-1);
+    }
+    if (strncmp(TIFFGetVersion(), "LIBTIFF, Version 3.4", 20) != 0) {
+	printf("old library: version %s\n", TIFFGetVersion());
+	exit(-1);
+    } else
+	exit(0);
+}
+EOF
+capture cat t.c
+if runMake t "t:; \${CC} \${CVERSION} -I${OTIFFINC} t.c ${LIBTIFF} ${LIBZ} ${MACHDEPLIBS}" && capture ./a.out; then
+    Note "Using TIFF include files from $OTIFFINC"
+    Note "Using pre-built TIFF library $LIBTIFF"
+else
+    cat 1>&2 <<EOF
+
+Incompatible/missing TIFF Library.
+
+Compilation or execution of the following test program failed:
+
+----------------------------------------------------------
+EOF
+    cat t.c 1>&2
+    cat 1>&2 <<EOF
+----------------------------------------------------------
+
+With:
+
+TIFFINC=${OTIFFINC}
+LIBTIFF=${LIBTIFF}
+
+The above program checks the version of the TIFF library to ensure it
+is suitable for use with HylaFAX.  HylaFAX ${VERSION} requires a recent
+TIFF software distribution; one distributed March 7, 1996 or later.  If
+you do not have up to date TIFF software on your system then you can
+retrieve it from the location where you obtained this software.
+Otherwise, if you have the right software, verify that you have the
+TIFFINC and LIBTIFF configuration parameters set correctly for your
+system (see above) and that any environment variables are setup that
+are needed to locate a libtiff DSO at runtime (e.g. LD_LIBRARY_PATH).
+Also be sure that any relative pathnames are made relative to the top
+of the build area.
+
+EOF
+    boom
+fi
+Note "Done checking TIFF support."
 
 # NB: only check if we have the MLA tools
 if [ -f $SRCDIR/MLA/VERSION -a $DBLIB = no ]; then