compile on openbsd: mostly ifdefs and missing includes,...

build/build_config.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file adds defines about the platform we're currently building on.
 //  Operating System:
 //    OS_WIN / OS_MACOSX / OS_LINUX / OS_POSIX (MACOSX or LINUX)
 //  Compiler:
 //    COMPILER_MSVC / COMPILER_GCC
 //  Processor:
 //    ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_X86_FAMILY (X86 or X86_64)
 //    ARCH_CPU_32_BITS / ARCH_CPU_64_BITS
 
 #ifndef BUILD_BUILD_CONFIG_H_
 #define BUILD_BUILD_CONFIG_H_
 
 // A set of macros to use for platform detection.
 #if defined(__APPLE__)
 #define OS_MACOSX 1
 #elif defined(__linux__)
 #define OS_LINUX 1
 // Use TOOLKIT_GTK on linux if TOOLKIT_VIEWS isn't defined.
 #if !defined(TOOLKIT_VIEWS)
 #define TOOLKIT_GTK
 #endif
+#elif defined(__OpenBSD__)
+#define OS_OPENBSD 1

[tony, 2009/06/10 18:42:04]

This should probably be OS_BSD.  It would be nice to have this work across
free/net/open bsd.  You don't have to verify that it works on net/free bsd now,
when someone comes around wanting a freebsd port, they can fix it up then.

+// Use TOOLKIT_GTK on OpenBSD if TOOLKIT_VIEWS isn't defined.
+#if !defined(TOOLKIT_VIEWS)
+#define TOOLKIT_GTK
+#endif
 #elif defined(_WIN32)
 #define OS_WIN 1
 #define TOOLKIT_VIEWS 1
 #else
 #error Please add support for your platform in build/build_config.h
 #endif
 
 // For access to standard POSIX features, use OS_POSIX instead of a more
 // specific macro.
-#if defined(OS_MACOSX) || defined(OS_LINUX)
+#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_OPENBSD)
 #define OS_POSIX 1
 #endif
 
 // Compiler detection.
 #if defined(__GNUC__)
 #define COMPILER_GCC 1
 #elif defined(_MSC_VER)
 #define COMPILER_MSVC 1
 #else
 #error Please add support for your compiler in build/build_config.h
@@ skipping 25 matching lines @@
 #define WCHAR_T_IS_UTF16
 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
     defined(__WCHAR_MAX__) && \
     (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff)
 #define WCHAR_T_IS_UTF32
 #else
 #error Please add support for your compiler in build/build_config.h
 #endif
 
 #endif  // BUILD_BUILD_CONFIG_H_