From af754e596a8dbb05ed8580c342e7fe02e08b28e0 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 13 Apr 2024 16:11:00 +0200
Subject: Adding upstream version 3.2.3+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 m4/fr_check_struct_has_member.m4 | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 m4/fr_check_struct_has_member.m4

(limited to 'm4/fr_check_struct_has_member.m4')

diff --git a/m4/fr_check_struct_has_member.m4 b/m4/fr_check_struct_has_member.m4
new file mode 100644
index 0000000..57d8b02
--- /dev/null
+++ b/m4/fr_check_struct_has_member.m4
@@ -0,0 +1,36 @@
+dnl #
+dnl #  Look for a header file in a number of places.
+dnl #
+dnl #  Usage:  FR_CHECK_STRUCT_HAS_MEMBER([#include <foo.h>], [struct foo], member)
+dnl #  If the member is defined, then the variable
+dnl #     ac_cv_type_struct_foo_has_member is set to 'yes'
+dnl #
+AC_DEFUN([FR_CHECK_STRUCT_HAS_MEMBER], [
+  AC_MSG_CHECKING([for $3 in $2])
+
+dnl BASED on 'offsetof':
+dnl #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+dnl
+
+  AC_TRY_COMPILE([
+$1
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
+#endif
+],
+                 [ int foo = offsetof($2, $3) ],
+                 has_element=" ",
+                 has_element=)
+
+  ac_safe_type=`echo "$2" | sed 'y% %_%'`
+  if test "x$has_element" != "x"; then
+    AC_MSG_RESULT(yes)
+    eval "ac_cv_type_${ac_safe_type}_has_$3=yes"
+  else
+    AC_MSG_RESULT(no)
+    eval "ac_cv_type_${ac_safe_type}_has_$3="
+ fi
+])
-- 
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