From 5c3f4b3cb26f92fa0cc60f750816e122e8a68f8d Mon Sep 17 00:00:00 2001
From: Dana Robinson <43805+derobins@users.noreply.github.com>
Date: Thu, 24 Jun 2021 12:21:46 -0700
Subject: Removes ancient Autotools cruft (#790)

---
 configure.ac    | 10 ----------
 src/H5private.h | 21 ++-------------------
 2 files changed, 2 insertions(+), 29 deletions(-)

diff --git a/configure.ac b/configure.ac
index cfd9d0c..cf1223b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -476,15 +476,9 @@ esac
 ## Data types and their sizes.
 ##
 AC_TYPE_OFF_T
-AC_CHECK_TYPE([size_t], [],
-        [AC_DEFINE_UNQUOTED([size_t], [unsigned long],
-                [Define to `unsigned long' if <sys/types.h> does not define.])])
 AC_CHECK_TYPE([ssize_t], [],
         [AC_DEFINE_UNQUOTED([ssize_t], [long],
                 [Define to `long' if <sys/types.h> does not define.])])
-AC_CHECK_TYPE([ptrdiff_t], [],
-        [AC_DEFINE_UNQUOTED([ptrdiff_t], [long],
-                [Define to `long' if <sys/types.h> does not define.])])
 AC_C_BIGENDIAN
 AC_CHECK_SIZEOF([char])
 AC_CHECK_SIZEOF([short])
@@ -1229,8 +1223,6 @@ AC_CHECK_LIB([dl], [dlopen])
 ## ----------------------------------------------------------------------
 ## Check for system header files.
 ##
-AC_HEADER_STDC
-AC_HEADER_TIME
 
 ## Unix
 AC_CHECK_HEADERS([sys/resource.h sys/time.h unistd.h sys/ioctl.h sys/stat.h])
@@ -2025,8 +2017,6 @@ AC_CHECK_FUNCS([tmpfile asprintf vasprintf waitpid])
 ## ----------------------------------------------------------------------
 ## Check compiler characteristics
 ##
-AC_C_CONST
-
 AC_MSG_CHECKING([for __attribute__ extension])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[int __attribute__((unused)) x]])],
                [AC_DEFINE([HAVE_ATTRIBUTE], [1],
diff --git a/src/H5private.h b/src/H5private.h
index ce6681a..327198d 100644
--- a/src/H5private.h
+++ b/src/H5private.h
@@ -38,11 +38,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 
 /* POSIX headers */
 #ifdef H5_HAVE_UNISTD_H
 #include <pwd.h>
 #include <unistd.h>
+#include <sys/time.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #endif
@@ -62,25 +64,6 @@
 #endif
 
 /*
- * If a program may include both `time.h' and `sys/time.h' then
- * TIME_WITH_SYS_TIME is defined (see AC_HEADER_TIME in configure.ac).
- * On some older systems, `sys/time.h' includes `time.h' but `time.h' is not
- * protected against multiple inclusion, so programs should not explicitly
- * include both files. This macro is useful in programs that use, for example,
- * `struct timeval' or `struct timezone' as well as `struct tm'.  It is best
- * used in conjunction with `HAVE_SYS_TIME_H', whose existence is checked
- * by `AC_CHECK_HEADERS(sys/time.h)' in configure.ac.
- */
-#if defined(H5_TIME_WITH_SYS_TIME)
-#include <sys/time.h>
-#include <time.h>
-#elif defined(H5_HAVE_SYS_TIME_H)
-#include <sys/time.h>
-#else
-#include <time.h>
-#endif
-
-/*
  * Longjumps are used to detect alignment constrants
  */
 #ifdef H5_HAVE_SETJMP_H
-- 
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