Invoke AC_PROG_CPP.

[elisp/starttls.git] / configure.in

diff --git a/configure.in b/configure.in
index 5fbf99f..d60257e 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -4,6 +4,7 @@ AM_INIT_AUTOMAKE(starttls, 0.10)
 
 AC_PROG_CC
 AC_ISC_POSIX
+AC_PROG_CPP
 gl_EARLY
 
 AC_PROG_INSTALL