https://gitlab.com/graphviz/graphviz/-/issues/1826
https://github.com/Homebrew/homebrew-core/pull/57132
diff --git a/configure.ac b/configure.ac
index cf42504..68db027 100644
--- a/configure.ac
+++ b/configure.ac
@@ -284,8 +284,7 @@ AC_CHECK_PROGS(SORT,gsort sort,false)

 AC_CHECK_PROG(EGREP,egrep,egrep,false)
 AC_CHECK_PROG(GROFF,groff,groff,false)
-AC_CHECK_PROG(PS2PDF,ps2pdf,ps2pdf,false)
-AC_CHECK_PROG(PS2PDF,pstopdf,pstopdf,false)
+AC_CHECK_PROGS(PS2PDF,ps2pdf pstopdf,false)

 PKG_PROG_PKG_CONFIG