Ensure tinc compiles with gcc -std=c99.

[tinc] / configure.in

diff --git a/configure.in b/configure.in
index 3cb6a4d..964dd27 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -21,7 +21,7 @@ AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
 ALL_LINGUAS="nl"
 
 dnl Checks for programs.
-AC_PROG_CC
+AC_PROG_CC_C99
 AC_PROG_CPP
 AC_PROG_INSTALL
 AC_PROG_LN_S