Thread patch to enable posix threads on gcc AmigaOS4

Thread.patch

diff --git a/libstdc++-v3/config/io/c_io_stdio.h b/libstdc++-v3/config/io/c_io_stdio.h
index 8a4b453..29e694c 100644
--- a/libstdc++-v3/config/io/c_io_stdio.h
+++ b/libstdc++-v3/config/io/c_io_stdio.h
@@ -33,13 +33,21 @@
 #define _GLIBCXX_CXX_IO_H 1
 
 #include <cstdio>
+#ifndef __amigaos4__
 #include <bits/gthr.h>
+#else
+#include <bits/gthr-posix.h>
+#endif
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
+#ifndef __amigaos4__
   typedef __gthread_mutex_t __c_lock;
+#else
+  typedef pthread_mutex_t __c_lock;
+#endif
 
   // for basic_file.h
   typedef FILE __c_file;
diff --git a/libstdc++-v3/config/os/amigaos/os_defines.h b/libstdc++-v3/config/os/amigaos/os_defines.h
index 6b67630..6d0f0f0 100644
--- a/libstdc++-v3/config/os/amigaos/os_defines.h
+++ b/libstdc++-v3/config/os/amigaos/os_defines.h
@@ -39,6 +39,7 @@
 #ifdef __NEWLIB__
 #define _GLIBCXX_USE_C99_STDINT_TR1 1
 #define _GLIBCXX_USE_C99 1
+#define _GLIBCXX_HAS_GTHREADS 1
 /* Temporary until newlib behaves properly */
 #undef __STRICT_ANSI__
 #endif
diff --git a/libstdc++-v3/include/ext/atomicity.h b/libstdc++-v3/include/ext/atomicity.h
index aff33f8..a53c120 100644
--- a/libstdc++-v3/include/ext/atomicity.h
+++ b/libstdc++-v3/include/ext/atomicity.h
@@ -32,7 +32,11 @@
 #pragma GCC system_header
 
 #include <bits/c++config.h>
+#ifndef __amigaos4__
 #include <bits/gthr.h>
+#else
+#include <bits/gthr-posix.h>
+#endif
 #include <bits/atomic_word.h>
 
 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
diff --git a/libstdc++-v3/include/ext/concurrence.h b/libstdc++-v3/include/ext/concurrence.h
index 10e5700..9ffe393 100644
--- a/libstdc++-v3/include/ext/concurrence.h
+++ b/libstdc++-v3/include/ext/concurrence.h
@@ -32,7 +32,11 @@
 #pragma GCC system_header
 
 #include <exception>
+#ifndef __amigaos4__
 #include <bits/gthr.h> 
+#else
+#include <bits/gthr-posix.h>
+#endif
 #include <bits/functexcept.h>
 #include <bits/cpp_type_traits.h>
 #include <ext/type_traits.h>
diff --git a/libstdc++-v3/include/ext/rope b/libstdc++-v3/include/ext/rope
index b982dc8..9341d53 100644
--- a/libstdc++-v3/include/ext/rope
+++ b/libstdc++-v3/include/ext/rope
@@ -52,7 +52,11 @@
 #include <bits/stl_function.h>
 #include <bits/stl_numeric.h>
 #include <bits/allocator.h>
+#ifndef __amigaos4__
 #include <bits/gthr.h>
+#else
+#include <bits/gthr-posix.h>
+#endif
 #include <tr1/functional>
 
 # ifdef __GC
diff --git a/libstdc++-v3/include/std/mutex b/libstdc++-v3/include/std/mutex
index b80a8a0..d952695 100644
--- a/libstdc++-v3/include/std/mutex
+++ b/libstdc++-v3/include/std/mutex
@@ -42,7 +42,11 @@
 #include <functional>
 #include <system_error>
 #include <bits/functexcept.h>
+#ifndef __amigaos4__
 #include <bits/gthr.h>
+#else
+#include <bits/gthr-posix.h>
+#endif
 #include <bits/move.h> // for std::swap
 #include <bits/cxxabi_forced.h>
 
diff --git a/libstdc++-v3/include/std/thread b/libstdc++-v3/include/std/thread
index 34e15e8..be8fcc7 100644
--- a/libstdc++-v3/include/std/thread
+++ b/libstdc++-v3/include/std/thread
@@ -40,7 +40,11 @@
 #include <memory>
 #include <bits/functexcept.h>
 #include <bits/functional_hash.h>
+#ifndef __amigaos4__
 #include <bits/gthr.h>
+#else
+#include <bits/gthr-posix.h>
+#endif
 
 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)
 
diff --git a/libstdc++-v3/src/c++11/condition_variable.cc b/libstdc++-v3/src/c++11/condition_variable.cc
index cc0f6e4..7e2eff4 100644
--- a/libstdc++-v3/src/c++11/condition_variable.cc
+++ b/libstdc++-v3/src/c++11/condition_variable.cc
@@ -26,7 +26,6 @@
 #include <cstdlib>
 
 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)
-
 namespace std _GLIBCXX_VISIBILITY(default)
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
diff --git a/libstdc++-v3/src/c++11/thread.cc b/libstdc++-v3/src/c++11/thread.cc
index 7fa415b..471cb24 100644
--- a/libstdc++-v3/src/c++11/thread.cc
+++ b/libstdc++-v3/src/c++11/thread.cc
@@ -59,7 +59,7 @@ static inline int get_nprocs()
 #endif
 
 #ifndef _GLIBCXX_USE_NANOSLEEP
-# ifdef _GLIBCXX_HAVE_SLEEP
+# if defined(_GLIBCXX_HAVE_SLEEP) || defined(__amigaos4__)
 #  include <unistd.h>
 # elif defined(_GLIBCXX_HAVE_WIN32_SLEEP)
 #  include <windows.h>