X-Git-Url: https://git.draconx.ca/gitweb/upkg.git/blobdiff_plain/af7bd229dca60b22270b928e5f767292be74501c..cdb019ee207a4bf4872203db94184bb507fa6670:/Makefile.am

diff --git a/Makefile.am b/Makefile.am
index 495f40a..b1330d0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -107,8 +107,24 @@ GOB_V_0 = @printf '  %$(DX_ALIGN_V)s %s\n' 'GOB     ' $<;
 # rather than its filename.  This isn't really suitable for use with make, so
 # this rule has to make some assumptions about the source tree layout.
 .gob.gobstamp:
+if HAVE_GOB2_DYN
 	$(GOB_V) $(GOB2) -o src --file-sep=/ --no-private-header $<
 	$(AM_V_at) touch $@
+else
+if HAVE_GOB2
+	@echo "ERROR: *** $(GOB2) does not support dynamic types." 1>&2
+else
+	@echo "ERROR: *** gob2 is missing on your system."  1>&2
+endif
+	@:; { \
+	 echo "       *** Because of this, I cannot compile $<, but"; \
+	 echo "       *** (perhaps because you modified it) the sources appear out of date."; \
+	 echo "       *** A newer version of gob2 may be required; the latest version"; \
+	 echo "       *** may be found at <https://draconx.ca/projects/gob-dx/>."; \
+	 echo "       *** See config.log for more details."; \
+	} 1>&2
+	@false
+endif
 
 STAMP_RECOVER = \
 	@if test -f $@; then :; else rm -f $<; $(MAKE) $(AM_MAKEFLAGS) $<; fi