$OpenBSD$

Index: ptest/Makefile
--- ptest/Makefile.orig
+++ ptest/Makefile
@@ -33,7 +33,8 @@ testsuite: package.m4 $(wildcard *.at)
 	$(AUTOTEST) -o $@.tmp $@.at
 	mv $@.tmp $@
 
-TESTSUITEFLAGS = --jobs=`getconf _NPROCESSORS_ONLN || echo 1`
+# work-around for https://github.com/vapier/pcalc/issues/5
+TESTSUITEFLAGS =
 
 check test: testsuite $(TEST_PROGS)
 	./testsuite $(TESTSUITEFLAGS)
