WUtil: mark the script 'get-wutil-flags' as deprecated

This script should have been removed a long time ago, in favour of
pkg-config which has to be present anyway to compile Window Maker.

This patch makes the script print a warning about it, and now calls itself
pkg-config, instead of being generated; the man page was also updated
accordingly (and spell-checked).

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

WINGs/Makefile.am

@@ -17,7 +17,7 @@ LDADD= libWUtil.la libWINGs.la $(top_builddir)/wrlib/libwraster.la @INTLIBS@
 libWINGs_la_LIBADD = libWUtil.la $(top_builddir)/wrlib/libwraster.la @XLIBS@ @XFTLIBS@ @FCLIBS@ @LIBM@ @PANGOLIBS@
 libWUtil_la_LIBADD = @LIBBSD@
 
-EXTRA_DIST = BUGS make-rgb Examples Extras Tests get-wings-flags.in get-wutil-flags.in
+EXTRA_DIST = BUGS make-rgb Examples Extras Tests get-wings-flags.in get-wutil-flags
 
 
 # wbutton.c 
@@ -98,7 +98,7 @@ AM_CPPFLAGS = -DRESOURCE_PATH=\"$(datadir)/WINGs\" \
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = WINGs.pc WUtil.pc
 
-DISTCLEANFILES = $(pkgconfig_DATA) get-wings-flags get-wutil-flags
+DISTCLEANFILES = $(pkgconfig_DATA) get-wings-flags
 
 WINGs.pc: Makefile
 	@echo "Generating $@"
@@ -129,11 +129,3 @@ WUtil.pc: Makefile
 	@echo 'Libs: -L$(libdir) -lWUtil' >> $@
 	@echo 'Libs.private: $(INTLIBS)' >> $@
 	@echo 'Cflags: -I$(includedir)' >> $@
-
-get-wutil-flags: get-wutil-flags.in Makefile
-	@echo "Generating $@"
-	@$(SED) -e 's#$${includedir}#$(includedir)#;' \
-	        -e 's#$${libdir}#$(libdir)#;' \
-	        -e 's#$${INTLIBS}#$(INTLIBS)#;' < $(abs_srcdir)/get-wutil-flags.in > $@
-	@chmod 755 $@
-

WINGs/get-wutil-flags

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+# [Christophe CURIS, 2015/01/31]
+# This script is now reporting itself as deprecated (this should have been done
+# a long time ago), so it should be kept for at least 2 years from now in order
+# to allow users to update their scripts, and then removed.
+
+if test $# -eq 0; then
+      echo "Error: $0 is deprecated, please use 'pkg-config WUtil ...'" >&2
+      exit 1
+fi
+
+while test $# -gt 0; do
+  case $1 in
+    --cflags)
+        echo "Warning: $0 is deprecated, please use 'pkg-config WUtil --cflags'" >&2
+	pkg-config WUtil --cflags
+        ;;
+    --ldflags|--lflags)
+	echo "Warning: $0 is deprecated, please use 'pkg-config WUtil --libs'" >&2
+        pkg-config WUtil --libs-only-L
+        ;;
+    --libs)
+	echo "Warning: $0 is deprecated, please use 'pkg-config WUtil --libs'" >&2
+        pkg-config WUtil --libs
+        ;;
+    *)
+	echo "Error: $0 is deprecated, please use 'pkg-config WUtil ...'" >&2
+	exit 1
+	;;
+  esac
+  shift
+done

WINGs/get-wutil-flags.in

@@ -1,31 +0,0 @@
-#!/bin/sh
-
-WCFLAGS="-I${includedir}"
-WLFLAGS="-L${libdir}"
-WLIBS="-lWUtil ${INTLIBS}"
-
-usage="Usage: get-wutil-flags [--cflags] [--ldflags] [--libs]"
-
-if test $# -eq 0; then
-      echo "${usage}" 1>&2
-      exit 1
-fi
-
-while test $# -gt 0; do
-  case $1 in
-    --cflags)
-	echo $WCFLAGS
-        ;;
-    --ldflags|--lflags)
-	echo $WLFLAGS
-        ;;
-    --libs)
-	echo $WLIBS
-        ;;
-    *)
-	echo "${usage}" 1>&2
-	exit 1
-	;;
-  esac
-  shift
-done