Continue with the FreeBSD port - this version builds and links, though...

base/sys_info_posix.cc

 // Copyright (c) 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.
 
 #include "base/file_util.h"
 #include "base/sys_info.h"
 #include "base/basictypes.h"
 
 #include <errno.h>
 #include <string.h>
 #include <sys/statvfs.h>
 #include <sys/utsname.h>
 #include <unistd.h>
 
 #if defined(OS_MACOSX)
 #include <mach/mach_host.h>
 #include <mach/mach_init.h>
 #endif
 
-#if defined(OS_OPENBSD)
+#if defined(OS_OPENBSD) || defined(OS_FREEBSD)
 #include <sys/param.h>
 #include <sys/sysctl.h>
 #endif
 
 #include "base/logging.h"
 #include "base/string_util.h"
 
 namespace base {
 
 int SysInfo::NumberOfProcessors() {
@@ skipping 133 matching lines @@
 
   if (!limit_valid) {
     std::string contents;
     file_util::ReadFileToString(FilePath("/proc/sys/kernel/shmmax"), &contents);
     limit = strtoul(contents.c_str(), NULL, 0);
     limit_valid = true;
   }
 
   return limit;
 }
+#elif defined(OS_FREEBSD)
+size_t SysInfo::MaxSharedMemorySize() {
+// TODO(benl): we should be able to get this from sysctl
+// (kern.ipc.shmmax) but the constants are missing from the headers...
+ return 33554432;
+}
 #endif
 
 }  // namespace base