Fix python to build with newlib.

libraries/python/nacl.patch

 diff --git a/Makefile.pre.in b/Makefile.pre.in
 index 9d55550..09e7a69 100644
 --- a/Makefile.pre.in
 +++ b/Makefile.pre.in
 @@ -592,14 +592,18 @@ Modules/pwdmodule.o: $(srcdir)/Modules/pwdmodule.c $(srcdir)/Modules/posixmodule
  
  $(GRAMMAR_H): $(GRAMMAR_INPUT) $(PGENSRCS)
                 @$(MKDIR_P) Include
 +ifndef CROSS_COMPILE
                 $(MAKE) $(PGEN)
@@ skipping 19 matching lines @@
                 $(PYTHON_FOR_BUILD) -Wi -tt $(DESTDIR)$(LIBDEST)/compileall.py \
                 -d $(LIBDEST) -f \
 @@ -1018,6 +1023,7 @@ libinstall:       build_all $(srcdir)/Lib/$(PLATDIR) $(srcdir)/Modules/xxmodule.c
                 $(PYTHON_FOR_BUILD) -Wi -t -O $(DESTDIR)$(LIBDEST)/compileall.py \
                 -d $(LIBDEST)/site-packages -f \
                 -x badsyntax $(DESTDIR)$(LIBDEST)/site-packages
 +endif
         -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..fad16aa 100644
+--- a/Modules/posixmodule.c
++++ b/Modules/posixmodule.c
+@@ -216,6 +216,31 @@ 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
++
++// TODO(sbc): add this to newlib's header:
++// https://code.google.com/p/nativeclient/issues/detail?id=3363
++extern int ftruncate(int fd, off_t length);
++
++// TODO(sbc): remove these once this change makes it into the NaCl SDK:
++// https://src.chromium.org/viewvc/native_client?view=rev&revision=11693
++extern int lstat(const char *, struct stat *);
++
++// These functions are missing from NaCl's newlib and nosys libraries.
++// TODO(sbc): remove these once this change makes it into the NaCl SDK:
++// https://codereview.chromium.org/18817002
++int fsync(int fd) {
++  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
 +++ b/Modules/pwdmodule.c
 @@ -94,6 +94,22 @@ mkpwent(struct passwd *p)
      return v;
  }
  
 +#ifdef __native_client__
 +struct passwd *getpwuid(uid_t uid)
@@ skipping 32 matching lines @@
 @@ -20,5 +24,9 @@ main(int argc, char **argv)
         m = fpgetmask();
         fpsetmask(m & ~FP_X_OFL);
  #endif
 +#ifdef __native_client__
 +  setvbuf(stdout, NULL, _IOLBF, 0);
 +  setvbuf(stdin, NULL, _IOLBF, 0);
 +#endif
         return Py_Main(argc, argv);
  }
+diff --git a/Python/thread.c b/Python/thread.c
+index dd333e8..33fec81 100644
+--- a/Python/thread.c
++++ b/Python/thread.c
+@@ -14,9 +14,19 @@
+    library (e.g. gnu pth in pthread emulation) */
+ # ifdef HAVE_PTHREAD_H
+ #  include <pthread.h> /* _POSIX_THREADS */
++#  if defined __native_client__ && !defined __GLIBC__
++     /* Under NaCl newlib neither pthread.h nor unistd.h defines _POSIX_THREADS.
++        However this file expects it to be defined if pthreads are present so we
++        define it here after including pthread.h
++        TODO(sbc): remove this hack once newlib is fixed:
++        https://code.google.com/p/nativeclient/issues/detail?id=3551
++        */
++#    define _POSIX_THREADS
++#  endif
+ # endif
+ #endif
+ 
++
+ #ifndef DONT_HAVE_STDIO_H
+ #include <stdio.h>
+ #endif
 diff --git a/configure b/configure
 index dc0dfd0..d45f7b0 100755
 --- a/configure
 +++ b/configure
 @@ -2853,19 +2853,26 @@ if test "$cross_compiling" = yes; then
      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for python interpreter for cross build" >&5
  $as_echo_n "checking for python interpreter for cross build... " >&6; }
      if test -z "$PYTHON_FOR_BUILD"; then
 -        for interp in python$PACKAGE_VERSION python2 python; do
 -           which $interp >/dev/null 2>&1 || continue
@@ skipping 163 matching lines @@
         OpenUNIX*|UnixWare*)
 @@ -2128,7 +2147,7 @@ then
             LINKFORSHARED="-Wl,-E -Wl,+s";;
  #          LINKFORSHARED="-Wl,-E -Wl,+s -Wl,+b\$(BINLIBDEST)/lib-dynload";;
         BSD/OS/4*) LINKFORSHARED="-Xlinker -export-dynamic";;
 -       Linux*|GNU*) LINKFORSHARED="-Xlinker -export-dynamic";;
 +       Linux*|GNU*|NaCl*) LINKFORSHARED="-Xlinker -export-dynamic";;
         # -u libsys_s pulls in all symbols in libsys
         Darwin/*) 
                 # -u _PyMac_Error is needed to pull in the mac toolbox glue,