shasum does not know -

diff --git a/contrib/src/main.mak b/contrib/src/main.mak
index 140b0f3f7d409a09e386d3825a37b057597c4784..aa0827df425df601457804292bd2c25e83bb5a18 100644 (file)
--- a/contrib/src/main.mak
+++ b/contrib/src/main.mak
@@ -177,7 +177,7 @@ download_git = \
        (cd $(dir $@) && \
         tar cvJ $(notdir $(@:.tar.xz=))) > $@ && \
        rm -Rf $(@:.tar.xz=)
-checksum = (cd $(TARBALLS) && $(1) --check -) < \
+checksum = (cd $(TARBALLS) && $(1) --check /dev/stdin) < \
                $(SRC)/$(patsubst .sum-%,%,$@)/$(2)SUMS
 CHECK_SHA512 = $(call checksum,$(SHA512SUM),SHA512)
 UNPACK = $(RM) -R $@ \