Include headers from chosen libarchive (#10923)

When CMAKE_USE_SYSTEM_LIBARCHIVE is on we must include the system
libarchive headers to match the library that will be linked.

Source/CPack/cmCPackArchiveGenerator.cxx

@@ -22,9 +22,7 @@
 #include <errno.h>
 
 #include <cmsys/SystemTools.hxx>
-#include <cmlibarchive/libarchive/archive.h>
-#include <cmlibarchive/libarchive/archive_entry.h>
-
+#include <cm_libarchive.h>
 
 //----------------------------------------------------------------------
 cmCPackArchiveGenerator::cmCPackArchiveGenerator(CompressType t,

Source/cmSystemTools.cxx

@@ -23,8 +23,7 @@
 #include <cmsys/Directory.hxx>
 #include <cmsys/System.h>
 #if defined(CMAKE_BUILD_WITH_CMAKE)
-#include <cmlibarchive/libarchive/archive.h>
-#include <cmlibarchive/libarchive/archive_entry.h>
+# include <cm_libarchive.h>
 # include <cmsys/Terminal.h>
 #endif
 #include <cmsys/stl/algorithm>

Utilities/cmThirdParty.h.in

@@ -16,6 +16,7 @@
 #cmakedefine CMAKE_USE_SYSTEM_CURL
 #cmakedefine CMAKE_USE_SYSTEM_EXPAT
 #cmakedefine CMAKE_USE_SYSTEM_ZLIB
+#cmakedefine CMAKE_USE_SYSTEM_LIBARCHIVE
 #cmakedefine CTEST_USE_XMLRPC
 
 #endif

Utilities/cm_libarchive.h

@@ -0,0 +1,25 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2010 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef __cm_libarchive_h
+#define __cm_libarchive_h
+
+/* Use the libarchive configured for CMake.  */
+#include "cmThirdParty.h"
+#ifdef CMAKE_USE_SYSTEM_LIBARCHIVE
+# include <archive.h>
+# include <archive_entry.h>
+#else
+# include <cmlibarchive/libarchive/archive.h>
+# include <cmlibarchive/libarchive/archive_entry.h>
+#endif
+
+#endif