1 files changed, 17 insertions, 0 deletions
diff --git a/contrib/nvi/build/aclocal.m4 b/contrib/nvi/build/aclocal.m4
new file mode 100644
index 000000000000..de7e57ed3aac
--- /dev/null
+++ b/contrib/nvi/build/aclocal.m4
@@ -0,0 +1,17 @@
+AC_DEFUN(AM_SANITY_CHECK_CC,
+[dnl Derived from macros from Bruno Haible and from Cygnus.
+AC_MSG_CHECKING([whether the compiler ($CC $CFLAGS $LDFLAGS) actually works])
+AC_LANG_SAVE
+  AC_LANG_C
+  AC_TRY_RUN([main() { exit(0); }],
+             am_cv_prog_cc_works=yes, am_cv_prog_cc_works=no,
+             dnl When crosscompiling, just try linking.
+             AC_TRY_LINK([], [], am_cv_prog_cc_works=yes,
+                         am_cv_prog_cc_works=no))
+AC_LANG_RESTORE
+case "$am_cv_prog_cc_works" in
+  *no) AC_MSG_ERROR([Installation or configuration problem: C compiler cannot create executables.]) ;;
+  *yes) ;;
+esac
+AC_MSG_RESULT(yes)
+])dnl