krb5 commit: Fix kadmin with e2fsprogs libss

[Greg Hudson]

https://github.com/krb5/krb5/commit/fd0b693f00f4d0b7b603bf4a2b8812869ad1df19
commit fd0b693f00f4d0b7b603bf4a2b8812869ad1df19
Author: Greg Hudson <ghudson at mit.edu>
Date:   Wed Sep 23 18:20:41 2015 -0400

    Fix kadmin with e2fsprogs libss
    
    The libss in e2fsprogs exports ss_execute_command(), but does not
    prototype it (as of this writing; a patch has been submitted
    upstream).  When using the system ss library, check if a prototype is
    needed and provide one if so.
    
    ticket: 8251 (new)
    target_version: 1.14
    tags: pullup

 src/aclocal.m4              |    1 +
 src/kadmin/cli/ss_wrapper.c |    4 ++++
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/aclocal.m4 b/src/aclocal.m4
index ff444ee..dbb7db2 100644
--- a/src/aclocal.m4
+++ b/src/aclocal.m4
@@ -1483,6 +1483,7 @@ int main(int argc, char *argv[]) {
 }], krb5_cv_system_ss_okay=yes, AC_MSG_ERROR(cannot run test program),
   krb5_cv_system_ss_okay="assumed")])
   LIBS="$old_LIBS"
+  KRB5_NEED_PROTO([#include <ss/ss.h>],ss_execute_command,1)
 else
   SS_VERSION=k5
   AC_MSG_RESULT(krb5)
diff --git a/src/kadmin/cli/ss_wrapper.c b/src/kadmin/cli/ss_wrapper.c
index 776c383..7ae9f1a 100644
--- a/src/kadmin/cli/ss_wrapper.c
+++ b/src/kadmin/cli/ss_wrapper.c
@@ -29,6 +29,10 @@
 #include <ss/ss.h>
 #include "kadmin.h"
 
+#ifdef NEED_SS_EXECUTE_COMMAND_PROTO
+int ss_execute_command(int, char **);
+#endif
+
 extern ss_request_table kadmin_cmds;
 extern int exit_status;
 extern char *whoami;