maint: avoid new automake warning about AM_PROG_CC_STDC

* configure.ac (AM_PROG_CC_STDC): Stop using this macro.
It provokes warnings from newer automake and is superseded by
autoconf's AC_PROG_CC, which we're already using.

diff --git a/configure.ac b/configure.ac
index 5d06b47877f9914457c77d40388c9b87eb71a46b..54f51ee31b86a3fc1701111430cf3cb993e2d27c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -80,7 +80,6 @@ dnl Checks for C compiler.
 AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_CPP
-AM_PROG_CC_STDC
 
 gl_EARLY
 gl_INIT