gentoo-overlay/mail-filter/scmail/files/scmail-parallel-make.patch

--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@
 
 all: check-gauche $(TARGET) update-doc
 
-update-doc:
+update-doc: dot.scmail/deliver-rules.sample
 	cd doc && make
 
 check-gauche:
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -41,3 +41,5 @@
 	@rm -f $(TARGET)
 	@rm -rf Mail Maildir test.*
 
+.NOTPARALLEL:
+