mhd_check_func_gettimeofday.m4: added new autoconf macro

1 files changed, 53 insertions, 0 deletions

diff --git a/m4/mhd_check_func_gettimeofday.m4 b/m4/mhd_check_func_gettimeofday.m4
new file mode 100644
index 00000000..8ef69ccb
--- /dev/null
+++ b/m4/mhd_check_func_gettimeofday.m4
@@ -0,0 +1,53 @@
+# SYNOPSIS
+#
+#   MHD_CHECK_FUNC_GETTIMEOFDAY([ACTION-IF-AVAILABLE],
+#                               [ACTION-IF-NOT-AVAILABLE])
+#
+# DESCRIPTION
+#
+#   This macro checks for presence of gettimeofday() function.
+#   If function is available macro HAVE_GETTIMEOFDAY is defined
+#   automatically.
+#
+#   Example usage:
+#
+#     MHD_CHECK_FUNC_GETTIMEOFDAY([var_use_gettimeofday='yes'])
+#
+#   The cache variable used in check so if any test will not work
+#   correctly on some platform, user may simply fix it by giving cache
+#   variable in configure parameters, for example:
+#
+#     ./configure mhd_cv_func_memmem_have=no
+#
+#   This simplifies building from source on exotic platforms as patching
+#   of configure.ac is not required to change results of tests.
+#
+# LICENSE
+#
+#   Copyright (c) 2019-2023 Karlson2k (Evgeny Grin) <k2k@narod.ru>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 1
+
+AC_DEFUN([MHD_CHECK_FUNC_GETTIMEOFDAY],[dnl
+AC_CHECK_HEADERS([sys/time.h time.h])dnl
+MHD_CHECK_FUNC([[gettimeofday]],
+  [[
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif /* HAVE_SYS_TIME_H */
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif /* HAVE_TIME_H */
+  ]],
+  [[
+  struct timeval tv;
+  if (0 != gettimeofday (&tv, (void*) 0))
+    return 1;
+  ]],[$1],[$2]
+)
+])dnl AC_DEFUN MHD_CHECK_FUNC_GETTIMEOFDAY