Fixes build failures on Portable Native Client.

Note: Some of the fixes are for newlib in general but not NaCl-specific.

* include/ruby/intern.h (rb_fd_select): declare struct timeval, or the
  struct gets local to the function in C99.

* file.c (#include): add nacl/stat.h for PNaCl.
  (utimes): added a declaration for PNaCl.
  (stat_atimespec): stat::st_atimensec is long long but
  timespec::tv_nsec is long in PNaCl.
  (stat_mtimespec, stat_ctimespec): ditto.
  (rb_group_member): disable getgroups unless HAVE_GETGROUPS.
  (eaccess): unify the fallback to generic defined(USE_GETEUID).

* io.c: include sys/time.h for struct timeval.
  (rb_close_before_exec): nothing we can do if F_GETFD is not
  available.
  (ioctl): pnacl newlib actually doesn't have ioctl.

* process.c (maxgroups): it is used iff
   defined(_SC_NGROUPS_MAX) || defined(NGROUPS_MAX) but not
   defined(HAVE_GETGROUPS) || defined(HAVE_SETGROUPS).
  (obj2gid): fail unless the object is a Fixnum if getgrnam is not
  available.
  (disable_child_handler_fork_child): sigaction is not available in
  PNaCl newlib.

* configure.in (warnflags, strict_warnflags): avoid -ansi for strlcpy.
  (rb_cv_gcc_atomic_builtins): also check
  __atomic_or_etch because it is used in ruby_atomic.h.
  (rb_cv_gcc_sync_builtins): ditto.
  (HAVE_GETGRNAM): added.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47882 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 1 deletions

diff --git a/nacl/README.nacl b/nacl/README.nacl
index ef2c3d1fa4..77140e0f75 100644
--- a/nacl/README.nacl
+++ b/nacl/README.nacl
@@ -15,7 +15,7 @@ You need to install the following things before building NaCl port of Ruby.
 (2) Set NACL_SDK_ROOT environment variable to the path to the Native Client SDK you installed:
      $ export NACL_SDK_ROOT=/home/yugui/src/nacl_sdk/pepper_37
 (3) Configure
-     $ ./configure --prefix=/tmp/nacl-ruby --host=x86_64-nacl --with-baseruby=/path/to/ruby-1.9.3
+     $ ./configure --prefix=/tmp/nacl-ruby --host=x86_64-nacl --with-baseruby=/path/to/ruby-1.9.3-or-later
 (4) Make
      $ make
      $ make package
@@ -28,6 +28,23 @@ embeds Ruby", and libraries to $prefix. You can run it by the following steps:
 (6) Visit the example.html on the web server by a browser that implements Pepper 18 or later.
    -- e.g., Chrome 18 implements Pepper 18, Chrome 19 implements Pepper 19, ...
 
+=== Example Configurations
+* x86_32 Native Client
+   $ ./configure --prefix=/tmp/nacl-ruby \
+     --host=i686-nacl \
+     --with-baseruby=/path/to/ruby-1.9.3-or-later
+* arm Native Client
+   $ ./configure --prefix=/tmp/nacl-ruby \
+     --host=arm-nacl \
+     --with-newlib \
+     --with-baseruby=/path/to/ruby-1.9.3-or-later
+* Portable Native Client
+   $ ./configure --prefix=/tmp/nacl-ruby \
+     --host=le32-nacl \
+     --with-newlib \
+     --with-static-linked-ext \
+     --with-baseruby=/path/to/ruby-1.9.3-or-later
+
 = Copyright
 * Copyright 2012 Google Inc. All Rights Reserved.
 * Author: yugui@google.com (Yugui Sonoda)