configure: Fix typo in ctype.h

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/configure.ac b/configure.ac
index 055c386d6fdfd5eebcd83a19b8f9405a56cb8301..8807efddf9afe06fdb58aa5a0f1aaadb57b9d91c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -138,7 +138,7 @@ AC_C_CONST
 AC_CHECK_LIB([m], [round])
 
 AC_CHECK_HEADERS([ \
-       ctypes.h \
+       ctype.h \
        dirent.h \
        errno.h \
        fcntl.h \