Attempt to improve mingw-w64 support

- Set -Isrc/windows for mingw
- Check existence of sigaction, pread, and pwrite
- Provide alternative implementation of pread and pwrite
- Eliminate symlink code for OS_WINDOWS
- Don't check /proc/self/fd if the OS isn't linux
- Don't use MSVC specific declarations in port.h for mingw



git-svn-id: https://google-glog.googlecode.com/svn/trunk@135 eb4d4688-79bd-11dd-afb4-1d65580434c0

1 files changed, 3 insertions, 0 deletions

diff --git a/src/utilities.cc b/src/utilities.cc
index a6d1961..f31c7c7 100644
--- a/src/utilities.cc
+++ b/src/utilities.cc
@@ -136,6 +136,8 @@ static void DumpStackTrace(int skip_count, DebugWriter *writerfn, void *arg) {
 static void DumpStackTraceAndExit() {
   DumpStackTrace(1, DebugWriteToStderr, NULL);
 
+  // TOOD(hamaji): Use signal instead of sigaction?
+#ifdef HAVE_SIGACTION
   // Set the default signal handler for SIGABRT, to avoid invoking our
   // own signal handler installed by InstallFailedSignalHandler().
   struct sigaction sig_action;
@@ -143,6 +145,7 @@ static void DumpStackTraceAndExit() {
   sigemptyset(&sig_action.sa_mask);
   sig_action.sa_handler = SIG_DFL;
   sigaction(SIGABRT, &sig_action, NULL);
+#endif  // HAVE_SIGACTION
 
   abort();
 }