.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/Makefile.in b/src/Makefile.in
index 0f2048664..f9bca9909 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -1724,7 +1724,9 @@ check-misc:
 # Any that don't must be marked with `extern', but `main'
 # and `usage' are exceptions.  They're always extern, but
 # don't need to be marked.
-sc_src_functions_have_static_scope: $(all_programs)
+#
+# The second nm|grep checks for file-scope variables with `extern' scope.
+sc_tight_scope: $(all_programs)
 	@t=exceptions-$$$$;						\
 	trap "s=$$?; rm -f $$t; exit $$s" 0 1 2 13 15;			\
 	( printf '^main$$\n^usage$$\n';					\
@@ -1734,6 +1736,12 @@ sc_src_functions_have_static_scope: $(all_programs)
 	    | sed -n 's/.* T //p'					\
 	    | grep -Ev -f $$t &&					\
 	  { echo 'the above functions should have static scope' 1>&2;	\
+	    exit 1; } || : ;						\
+	printf '^program_name$$\n' > $$t;				\
+	nm -e *.$(OBJEXT)						\
+	    | sed -n 's/.* B //p'					\
+	    | grep -Ev -f $$t &&					\
+	  { echo 'the above variables should have static scope' 1>&2;	\
 	    exit 1; } || :
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.