Fix python to build with newlib.

libraries/python/nacl.patch

Index: libraries/python/nacl.patch
diff --git a/libraries/python/nacl.patch b/libraries/python/nacl.patch
index a8e930f63acdd75b0a40deb2aa187c3e51dae15e..b35cf64baa97d1c967f50da363a7fc605204ddfe 100644
--- a/libraries/python/nacl.patch
+++ b/libraries/python/nacl.patch
@@ -37,6 +37,35 @@ index 9d55550..09e7a69 100644
  	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
  		$(PYTHON_FOR_BUILD) -m lib2to3.pgen2.driver $(DESTDIR)$(LIBDEST)/lib2to3/Grammar.txt
  	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
+diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
+index 65ade9f..3aaf148 100644
+--- a/Modules/posixmodule.c
++++ b/Modules/posixmodule.c
+@@ -216,6 +216,24 @@ extern int lstat(const char *, struct stat *);
+ 
+ #endif /* !_MSC_VER */
+ 
++#if defined(__native_client__) && !defined(__GLIBC__)
++// NaCl's newlib headers don't declare these functions
++extern int ftruncate(int fd, off_t length);
++extern int lstat(const char *, struct stat *);

[Mark Seaborn, 2013/07/12 19:47:29]

This is fixed in
https://src.chromium.org/viewvc/native_client?view=rev&revision=11693.  Can you
remove this?

[Sam Clegg, 2013/07/12 21:54:29]

Added TODO to remove when this lands.

[Mark Seaborn, 2013/07/16 15:40:12]

The change to fix this should have rolled into Chrome several days ago.  Would
you mind trying this with the current SDK?  You should be able to remove this
now.

[Sam Clegg, 2013/07/16 16:19:16]

This is still missing in the lastest SDK built against nacl r11718.

I guess this is because the TOOLCHAIN_REVISION needs to be rolled before the
header makes it into the toolchain?

++
++// These functions are missing from NaCl's newlib
++// and nosys libraries.
++int fsync(int fd) {

[Mark Seaborn, 2013/07/12 19:47:29]

This is fixed in
https://src.chromium.org/viewvc/native_client?view=rev&revision=11694

[Sam Clegg, 2013/07/12 21:54:29]

Added TODO to remove when this lands.

++  errno = ENOSYS;
++  return -1;
++}
++
++int fdatasync(int fd) {
++  errno = ENOSYS;
++  return -1;
++}
++#endif
++
+ #ifdef HAVE_UTIME_H
+ #include <utime.h>
+ #endif /* HAVE_UTIME_H */
 diff --git a/Modules/pwdmodule.c b/Modules/pwdmodule.c
 index c2907f6..9e64898 100644
 --- a/Modules/pwdmodule.c
@@ -89,6 +118,21 @@ index 2739b8b..35f0aa0 100644
 +#endif
  	return Py_Main(argc, argv);
  }
+diff --git a/Python/thread.c b/Python/thread.c
+index dd333e8..ac05657 100644
+--- a/Python/thread.c
++++ b/Python/thread.c
+@@ -17,6 +17,10 @@
+ # endif
+ #endif
+ 
++#if defined __native_client__ && !defined __GLIBC__

[Mark Seaborn, 2013/07/12 19:47:29]

Can you link to https://code.google.com/p/nativeclient/issues/detail?id=3551
here?

[Sam Clegg, 2013/07/12 21:54:29]

Done.

++#define _POSIX_THREADS
++#endif
++
+ #ifndef DONT_HAVE_STDIO_H
+ #include <stdio.h>
+ #endif
 diff --git a/configure b/configure
 index dc0dfd0..d45f7b0 100755
 --- a/configure