Postmoderize use of AC_CHECK_TYPE

Use AC_TYPE_SSIZE_T to handle the ssize_t check (introduced in Autconf
2.60).  Use AC_CHECK_TYPE, not AC_CHECK_TYPES, to check for sig_atomic_t
and socklen_t, and define them in afsconfig.h if they're not present on
this platform.  Do not define them in stds.h, since stds.h is an installed
header file and cannot rely on Autoconf defines.

Change-Id: I80e1a00efc84420002a95d6cafc25ea70befa49d
Reviewed-on: http://gerrit.openafs.org/2018
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>

diff --git a/acinclude.m4 b/acinclude.m4
index 189ee95..142bffe 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1285,11 +1285,15 @@ AC_CHECK_SIZEOF(unsigned long)
 AC_CHECK_SIZEOF(unsigned int)
 AC_TYPE_INTPTR_T
 AC_TYPE_UINTPTR_T
-AC_CHECK_TYPES([ssize_t])
-AC_CHECK_TYPES([sig_atomic_t],[],[],
+AC_TYPE_SSIZE_T
+AC_CHECK_TYPE([sig_atomic_t],[],
+    [AC_DEFINE([sig_atomic_t], [int],
+        [Define to int if <signal.h> does not define.])],
 [#include <sys/types.h>
 #include <signal.h>])
-AC_CHECK_TYPES([socklen_t],[],[],
+AC_CHECK_TYPE([socklen_t],[],
+    [AC_DEFINE([socklen_t], [int],
+        [Define to int if <sys/socket.h> does not define.])],
 [#include <sys/types.h>
 #include <sys/socket.h>])
 AC_SIZEOF_TYPE(long)

diff --git a/src/config/stds.h b/src/config/stds.h
index d7358c5..90f9661 100644 (file)
--- a/src/config/stds.h
+++ b/src/config/stds.h
@@ -7,6 +7,12 @@
  * directory or online at http://www.openafs.org/dl/license10.html
  */
 
+/*
+ * Do not put anything in this file that relies on Autoconf defines, since
+ * we're not guaranteed to have included afsconfig.h before this header file.
+ * This is an installed header file, and afsconfig.h is not.
+ */
+
 #ifndef OPENAFS_AFS_CONFIG_STDS_H
 #define OPENAFS_AFS_CONFIG_STDS_H      1
 
@@ -51,18 +57,6 @@ pragma Off(Prototype_override_warnings);
 #define MIN_AFS_INT64 (-MAX_AFS_INT64 - 1)
 #define MAX_AFS_UINT64 0xFFFFFFFFFFFFFFFFL
 
-#ifndef HAVE_SSIZE_T
-typedef int ssize_t;
-#endif
-
-#ifndef HAVE_SIG_ATOMIC_T
-typedef int sig_atomic_t;
-#endif
-
-#ifndef HAVE_SOCKLEN_T
-typedef int socklen_t;
-#endif
-
 typedef short afs_int16;
 typedef unsigned short afs_uint16;
 #ifdef  AFS_64BIT_ENV