Dothem: older proves do not know --exec

diff --git a/Dothem b/Dothem
index 3ee886385a0cf8247e1afc9e8c60af6b9eb57921..b8f52c96bf06411caac40401a1765b3412a7a737 100755 (executable)
--- a/Dothem
+++ b/Dothem
@@ -48,7 +48,8 @@ do
 done
 
 sh -c 'asciidoc --version >/dev/null 2>&1' || nodoc=y
-if sh -c 'prove --version >/dev/null 2>&1'
+if sh -c 'prove --version >/dev/null 2>&1' &&
+   sh -c 'prove --exec : >/dev/null 2>&1'
 then
        DEFAULT_TEST_TARGET=prove GIT_PROVE_OPTS="$jobs"
        export DEFAULT_TEST_TARGET GIT_PROVE_OPTS