older autoconf sometimes dislikes [].

bk: 4d6221a970JTSj9lM25E4Hc7tX5Ugw

diff --git a/ChangeLog b/ChangeLog
index a845bf3939f91b7b3e6749d136014cf661fab080..f71cabf3c668be756d361261a6dd3bec53c9ecd5 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,4 @@
+* older autoconf sometimes dislikes [].
 * Move "can't write KoD file" warning from sntp shutdown to startup.
 * refclock_acts.c cleanup from Dave Mills.
 * Convert sntp to libevent event-driven socket programming.  Instead of

diff --git a/sntp/m4/ntp_libntp.m4 b/sntp/m4/ntp_libntp.m4
index 758ff632862714aaa777d1d40def48bd499188ec..eace90035d9627280defea2effed7b55d123df9a 100644 (file)
--- a/sntp/m4/ntp_libntp.m4
+++ b/sntp/m4/ntp_libntp.m4
@@ -299,7 +299,7 @@ AC_CHECK_FUNCS([sem_timedwait socketpair])
 AC_ARG_ENABLE(
     [thread-support],
     [AS_HELP_STRING([--disable-thread-support, do not use threads])],
-    [], 
+    , 
     [enable_thread_support=yes]
     )
 have_pthreads=no
@@ -320,7 +320,7 @@ case "$have_pthreads" in
     CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
     AC_CHECK_SIZEOF(
        [pthread_t],
-       [],
+       ,
        [
            AC_INCLUDES_DEFAULT()
            #include <pthread.h>
@@ -357,8 +357,7 @@ case "$have_pthreads" in
        AC_CHECK_LIB(
            [c_r],
            [sigwait],
-           [have_sigwait=yes],
-           []
+           [have_sigwait=yes]
        )
     esac
     case "$have_sigwait" in
@@ -388,8 +387,7 @@ case "$have_pthreads" in
        AC_CHECK_FUNC(
            [pthread_setconcurrency],
            [AC_DEFINE([CALL_PTHREAD_SETCONCURRENCY], [1],
-                      [why not HAVE_P_S?])],
-           []
+                      [why not HAVE_P_S?])]
        )
        ;;
      *-sco-sysv*uw*|*-*-sysv*UnixWare*|*-*-sysv*OpenUNIX*)