Index: cmake/modules/LLDBConfig.cmake
===================================================================
--- cmake/modules/LLDBConfig.cmake
+++ cmake/modules/LLDBConfig.cmake
@@ -270,8 +270,8 @@
 message(STATUS "LLDB version: ${LLDB_VERSION}")
 
 include_directories(BEFORE
-  ${CMAKE_CURRENT_BINARY_DIR}/include
   ${CMAKE_CURRENT_SOURCE_DIR}/include
+  ${CMAKE_CURRENT_BINARY_DIR}/include
   )
 
 if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
@@ -281,6 +281,16 @@
     FILES_MATCHING
     PATTERN "*.h"
     PATTERN ".svn" EXCLUDE
+    PATTERN "Config.h" EXCLUDE
+    )
+
+  install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/
+    COMPONENT lldb_headers
+    DESTINATION include
+    FILES_MATCHING
+    PATTERN "*.h"
+    PATTERN ".svn" EXCLUDE
+    PATTERN ".cmake" EXCLUDE
     )
 endif()
 
@@ -421,3 +431,18 @@
 endif()
 
 find_package(Backtrace)
+
+check_include_file(termios.h HAVE_TERMIOS_H)
+
+# These checks exist in LLVM's configuration, so I want to match the LLVM names
+# so that the check isn't duplicated, but we translate them into the LLDB names
+# so that I don't have to change all the uses at the moment.
+set(LLDB_CONFIG_TERMIOS_SUPPORTED ${HAVE_TERMIOS_H})
+if(NOT UNIX)
+  set(LLDB_DISABLE_POSIX 1)
+endif()
+
+# This should be done at the end
+configure_file(
+  ${LLDB_INCLUDE_ROOT}/lldb/Host/Config.h.cmake
+  ${CMAKE_CURRENT_BINARY_DIR}/include/lldb/Host/Config.h)
Index: include/lldb/Host/Config.h
===================================================================
--- include/lldb/Host/Config.h
+++ include/lldb/Host/Config.h
@@ -9,42 +9,18 @@
 
 #ifndef liblldb_Config_h_
 #define liblldb_Config_h_
-
+ 
 #if defined(__APPLE__)
 
-#include "lldb/Host/macosx/Config.h"
-
-#elif defined(__ANDROID__)
-
-#include "lldb/Host/android/Config.h"
-
-#elif defined(__linux__) || defined(__GNU__)
-
-#include "lldb/Host/linux/Config.h"
-
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-
-#include "lldb/Host/freebsd/Config.h"
-
-#elif defined(__NetBSD__)
-
-#include "lldb/Host/netbsd/Config.h"
-
-#elif defined(__OpenBSD__)
-
-#include "lldb/Host/openbsd/Config.h"
-
-#elif defined(__MINGW__) || defined(__MINGW32__)
-
-#include "lldb/Host/mingw/Config.h"
-
-#elif defined(_MSC_VER)
+// This block of code only exists to keep the Xcode project working in the
+// absence of a configuration step.
+#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
 
-#include "lldb/Host/msvc/Config.h"
+#define HAVE_SYS_EVENT_H 1
 
 #else
 
-#error undefined platform
+#error This file is only used by the Xcode build.
 
 #endif
 
Index: include/lldb/Host/Config.h.cmake
===================================================================
--- /dev/null
+++ include/lldb/Host/Config.h.cmake
@@ -0,0 +1,19 @@
+//===-- Config.h -----------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_Config_h_
+#define liblldb_Config_h_
+
+#cmakedefine01 LLDB_CONFIG_TERMIOS_SUPPORTED
+
+#cmakedefine LLDB_DISABLE_POSIX
+
+#cmakedefine01 HAVE_SYS_EVENT_H
+
+#endif // #ifndef liblldb_Generated_Config_h_
Index: include/lldb/Host/android/Config.h
===================================================================
--- include/lldb/Host/android/Config.h
+++ /dev/null
@@ -1,28 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef liblldb_Platform_Config_h_
-#define liblldb_Platform_Config_h_
-
-#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-//#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-//#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-//#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-#endif // #ifndef liblldb_Platform_Config_h_
Index: include/lldb/Host/freebsd/Config.h
===================================================================
--- include/lldb/Host/freebsd/Config.h
+++ /dev/null
@@ -1,31 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef liblldb_Platform_Config_h_
-#define liblldb_Platform_Config_h_
-
-#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-//#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-//#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-// FIXME: This should be set by a configure-time check.
-#define HAVE_SYS_EVENT_H 1
-
-#endif // #ifndef liblldb_Platform_Config_h_
Index: include/lldb/Host/linux/Config.h
===================================================================
--- include/lldb/Host/linux/Config.h
+++ /dev/null
@@ -1,28 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef liblldb_Platform_Config_h_
-#define liblldb_Platform_Config_h_
-
-#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-//#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-//#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-#endif // #ifndef liblldb_Platform_Config_h_
Index: include/lldb/Host/macosx/Config.h
===================================================================
--- include/lldb/Host/macosx/Config.h
+++ /dev/null
@@ -1,31 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef LLDB_HOST_MACOSX_CONFIG_H
-#define LLDB_HOST_MACOSX_CONFIG_H
-
-#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-// FIXME: This should be set by a configure-time check.
-#define HAVE_SYS_EVENT_H 1
-
-#endif // LLDB_HOST_MACOSX_CONFIG_H
Index: include/lldb/Host/mingw/Config.h
===================================================================
--- include/lldb/Host/mingw/Config.h
+++ /dev/null
@@ -1,30 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef liblldb_Platform_Config_h_
-#define liblldb_Platform_Config_h_
-
-#define LLDB_DISABLE_POSIX
-
-//#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-//#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-//#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-//#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-#endif // #ifndef liblldb_Platform_Config_h_
Index: include/lldb/Host/msvc/Config.h
===================================================================
--- include/lldb/Host/msvc/Config.h
+++ /dev/null
@@ -1,30 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef liblldb_host_msvc_Config_h_
-#define liblldb_host_msvc_Config_h_
-
-#define LLDB_DISABLE_POSIX
-
-//#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-//#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-//#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-//#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-#endif // #ifndef liblldb_Platform_Config_h_
Index: include/lldb/Host/netbsd/Config.h
===================================================================
--- include/lldb/Host/netbsd/Config.h
+++ /dev/null
@@ -1,28 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef liblldb_Platform_Config_h_
-#define liblldb_Platform_Config_h_
-
-#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-//#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-//#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-#endif // #ifndef liblldb_Platform_Config_h_
Index: include/lldb/Host/openbsd/Config.h
===================================================================
--- include/lldb/Host/openbsd/Config.h
+++ /dev/null
@@ -1,28 +0,0 @@
-//===-- Config.h -----------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-//----------------------------------------------------------------------
-// LLDB currently doesn't have a dynamic configuration mechanism, so we
-// are going to hardcode things for now. Eventually these files will
-// be auto generated by some configuration script that can detect
-// platform functionality availability.
-//----------------------------------------------------------------------
-
-#ifndef liblldb_Platform_Config_h_
-#define liblldb_Platform_Config_h_
-
-#define LLDB_CONFIG_TERMIOS_SUPPORTED 1
-
-#define LLDB_CONFIG_TILDE_RESOLVES_TO_USER 1
-
-//#define LLDB_CONFIG_DLOPEN_RTLD_FIRST_SUPPORTED 1
-
-//#define LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED 1
-
-#endif // #ifndef liblldb_Platform_Config_h_
Index: source/Host/common/File.cpp
===================================================================
--- source/Host/common/File.cpp
+++ source/Host/common/File.cpp
@@ -307,7 +307,7 @@
 
 Error File::GetFileSpec(FileSpec &file_spec) const {
   Error error;
-#ifdef LLDB_CONFIG_FCNTL_GETPATH_SUPPORTED
+#ifdef F_GETPATH
   if (IsValid()) {
     char path[PATH_MAX];
     if (::fcntl(GetDescriptor(), F_GETPATH, path) == -1)