tests: ensure that all exec-$PERL lines are the same

* maint.mk (sc_perl_coreutils_test): New rule.

diff --git a/maint.mk b/maint.mk
index 586596b..46bc8b6 100644 (file)
--- a/maint.mk
+++ b/maint.mk
@@ -407,6 +407,24 @@ sc_GPL_version:
        @grep -n 'either ''version [^3]' $$($(VC_LIST_EXCEPT)) &&       \
          { echo '$(ME): GPL vN, N!=3' 1>&2; exit 1; } || :
 
+exec_perl_re = \
+  exec \$$PERL -w -I\$$top_srcdir/tests -MCoreutils \
+    -M"CuTmpdir qw(\$$me)" -- - <<\\EOF
+# Ensure that each test invoking $PERL with -MCoreutils uses the same line.
+sc_perl_coreutils_test:
+       @if test -f $(srcdir)/tests/Coreutils.pm; then                  \
+         die=0;                                                        \
+         for i in $$(grep -l '^exec  *\$$PERL.*MCoreutils'             \
+               $$($(VC_LIST) tests)); do                               \
+           grep '$(exec_perl_re)' $$i > /dev/null                      \
+             && : || { die=1; echo $$i; }                              \
+         done;                                                         \
+         test $$die = 1 &&                                             \
+           { echo 1>&2 '$(ME): each of the above execs PERL differently:'; \
+             echo 1>&2 '(exit $$fail); exit $$fail';                   \
+             exit 1; } || :;                                           \
+       fi
+
 # Ensure that the c99-to-c89 patch applies cleanly.
 patch-check:
        rm -rf src-c89 $@.1 $@.2