From f293b73d71c5dbbf053a864b2c2f285ef0834630 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 4 Jan 2012 08:46:49 -0500
Subject: [PATCH] libarchive: Define _XOPEN_SOURCE=500 on HP-UX

The HP-UX <wchar.h> header provides 'mbstate_t' in C89/C90 mode only if
_XOPEN_SOURCE is defined to exactly 500.  Type 'mbstate_t' was
introduced in C89/C90 Normative Amendment 1, aka C94/C95, adding support
international character sets.  It is part of C99 but not C89/C90.
---
 Utilities/cmlibarchive/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Utilities/cmlibarchive/CMakeLists.txt b/Utilities/cmlibarchive/CMakeLists.txt
index 9689b2868..23526939e 100644
--- a/Utilities/cmlibarchive/CMakeLists.txt
+++ b/Utilities/cmlibarchive/CMakeLists.txt
@@ -75,6 +75,10 @@ IF(WIN32)
   SET(_WIN32_WINNT ${WINVER})
 ENDIF(WIN32)
 
+IF("${CMAKE_C_PLATFORM_ID}" MATCHES "^(HP-UX)$")
+  ADD_DEFINITIONS(-D_XOPEN_SOURCE=500) # Ask wchar.h for mbstate_t
+ENDIF()
+
 #
 INCLUDE(CheckCSourceCompiles)
 INCLUDE(CheckCSourceRuns)