From f3a367608a61b8ec8be791f149baf71146de5b28 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 5 May 2014 08:57:34 -0400
Subject: [PATCH] SystemInformation: Include backtrace APIs whenever we use
 them

Include execinfo.h, cxxabi.h, and dlfcn.h under the same conditions
under which we use the APIs from them.  Move their inclusion out of
OS-specific blocks.

Change-Id: I7723e530e2351d259adddd8e570036a562bade05
---
 SystemInformation.cxx | 43 +++++++++++++++----------------------------
 1 file changed, 15 insertions(+), 28 deletions(-)

diff --git a/SystemInformation.cxx b/SystemInformation.cxx
index 720a7c3..6544098 100644
--- a/SystemInformation.cxx
+++ b/SystemInformation.cxx
@@ -88,15 +88,6 @@ typedef int siginfo_t;
 #  include <ifaddrs.h>
 #  define KWSYS_SYSTEMINFORMATION_IMPLEMENT_FQDN
 # endif
-# if defined(KWSYS_SYSTEMINFORMATION_HAS_BACKTRACE)
-#  include <execinfo.h>
-#  if defined(KWSYS_SYSTEMINFORMATION_HAS_CPP_DEMANGLE)
-#    include <cxxabi.h>
-#  endif
-#  if defined(KWSYS_SYSTEMINFORMATION_HAS_SYMBOL_LOOKUP)
-#    include <dlfcn.h>
-#  endif
-# endif
 #endif
 
 #if defined(__OpenBSD__) || defined(__NetBSD__)
@@ -126,16 +117,8 @@ typedef int siginfo_t;
 #  include <ifaddrs.h>
 #  define KWSYS_SYSTEMINFORMATION_IMPLEMENT_FQDN
 # endif
-# if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0 >= 1050
-#  if defined(KWSYS_SYSTEMINFORMATION_HAS_BACKTRACE)
-#   include <execinfo.h>
-#   if defined(KWSYS_SYSTEMINFORMATION_HAS_CPP_DEMANGLE)
-#     include <cxxabi.h>
-#   endif
-#   if defined(KWSYS_SYSTEMINFORMATION_HAS_SYMBOL_LOOKUP)
-#     include <dlfcn.h>
-#   endif
-#  endif
+# if !(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0 >= 1050)
+#  undef KWSYS_SYSTEMINFORMATION_HAS_BACKTRACE
 # endif
 #endif
 
@@ -150,15 +133,6 @@ typedef int siginfo_t;
 #   define KWSYS_SYSTEMINFORMATION_IMPLEMENT_FQDN
 #  endif
 # endif
-# if defined(KWSYS_SYSTEMINFORMATION_HAS_BACKTRACE)
-#  include <execinfo.h>
-#  if defined(KWSYS_SYSTEMINFORMATION_HAS_CPP_DEMANGLE)
-#    include <cxxabi.h>
-#  endif
-#  if defined(KWSYS_SYSTEMINFORMATION_HAS_SYMBOL_LOOKUP)
-#    include <dlfcn.h>
-#  endif
-# endif
 # if defined(KWSYS_CXX_HAS_RLIMIT64)
 typedef struct rlimit64 ResourceLimitType;
 #  define GetResourceLimit getrlimit64
@@ -178,6 +152,19 @@ typedef struct rlimit ResourceLimitType;
 # include <OS.h>
 #endif
 
+#if defined(KWSYS_SYSTEMINFORMATION_HAS_BACKTRACE)
+# include <execinfo.h>
+# if defined(KWSYS_SYSTEMINFORMATION_HAS_CPP_DEMANGLE)
+#  include <cxxabi.h>
+# endif
+# if defined(KWSYS_SYSTEMINFORMATION_HAS_SYMBOL_LOOKUP)
+#  include <dlfcn.h>
+# endif
+#else
+# undef KWSYS_SYSTEMINFORMATION_HAS_CPP_DEMANGLE
+# undef KWSYS_SYSTEMINFORMATION_HAS_SYMBOL_LOOKUP
+#endif
+
 #include <memory.h>
 #include <stdlib.h>
 #include <stdio.h>
-- 
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