Errr. Sorry about the "byacc" prefix. Copy/paste error.
Add explicit dependency for libpath.h on dynl.x which fixes a potential parallel build issue. The other file that includes libguile/libpath.h (libguile/load.c) already has an explicit dependency on libpath.h
diff --git a/libguile/Makefile.am b/libguile/Makefile.am
index e216435..016bd90 100644
--- a/libguile/Makefile.am
+++ b/libguile/Makefile.am
@@ -700,6 +700,7 @@ $(DOT_DOC_FILES) $(EXTRA_DOT_DOC_FILES): scmconfig.h snarf.h guile-snarf-docs.in
error.x: cpp-E.c
posix.x: cpp-SIG.c
load.x: libpath.h
+dynl.x: libpath.h
alldotdocfiles = $(DOT_DOC_FILES) $(EXTRA_DOT_DOC_FILES)
snarf2checkedtexi = GUILE_AUTO_COMPILE=0 $(top_builddir)/meta/uninstalled-env guild snarf-check-and-output-texi