Imports Ruby's port to NativeClient (a.k.a NaCl).

Patch by Google Inc. [ruby-core:45073].

* configure.in (RUBY_NACL): New M4 func to configure variables for
  NaCl.
  (RUBY_NACL_CHECK_PEPPER_TYPES): New M4 func to check the old names
  of Pepper interface types.
  (BTESTRUBY): New variable to specify which ruby should be run on
  "make btest". NaCl can run the built binary by sel_ldr, but it need
  rbconfig.rb. So this variable is distinguished from $MINIRUBY.
  
* thread_pthread.c: Disabled some features on NaCl.

* io.c: ditto.

* process.c: ditto.

* signal.c: ditto.

* file.c: ditto.

* missing/flock.c: ditto.

* nacl/pepper_main.c: An example implementation of Pepper application
  that embeds Ruby.

* nacl/example.html: An example of web page that uses the Pepper
  application.

* nacl/nacl-config.rb: Detects variants of NaCl SDK.

* nacl/GNUmakefile.in: Makefile template for NaCl specific build
  process.

* nacl/package.rb: script for packaging a NaCl-Ruby embedding
  application. 

* nacl/reate_nmf.rb: Wrapper script of create_nmf.py

* dln.c (dln_load): Added a hack to call on NaCl.

* util.c (ruby_getcwd): Path to the current directort is not available
  on NaCl.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35672 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 29 insertions, 8 deletions

diff --git a/process.c b/process.c
index c5e6eb72bf..cf9144f716 100644
--- a/process.c
+++ b/process.c
@@ -62,6 +62,11 @@
 #endif
 
 #include <sys/stat.h>
+#if defined(__native_client__) && defined(NACL_NEWLIB)
+# include "nacl/stat.h"
+# include "nacl/unistd.h"
+#endif
+
 
 #ifdef HAVE_SYS_TIMES_H
 #include <sys/times.h>
@@ -1042,7 +1047,7 @@ security(const char *str)
     }
 }
 
-#ifdef HAVE_FORK
+#if defined(HAVE_FORK) && !defined(__native_client__)
 #define try_with_sh(prog, argv) ((saved_errno == ENOEXEC) ? exec_with_sh((prog), (argv)) : (void)0)
 static void
 exec_with_sh(const char *prog, char **argv)
@@ -1061,13 +1066,20 @@ exec_with_sh(const char *prog, char **argv)
 #define ALLOC_ARGV_WITH_STR(n, v, s, l) \
     (char **)(((s) = ALLOCV_N(char, (v), ARGV_SIZE(n) + (l)) + ARGV_SIZE(n)) - ARGV_SIZE(n))
 
+#ifdef __native_client__
+static int
+proc_exec_v(char **argv, const char *prog)
+{
+  rb_notimplement();
+}
+#else
 static int
 proc_exec_v(char **argv, const char *prog)
 {
     char fbuf[MAXPATHLEN];
-#if defined(__EMX__) || defined(OS2)
+# if defined(__EMX__) || defined(OS2)
     char **new_argv = NULL;
-#endif
+# endif
 
     if (!prog)
 	prog = argv[0];
@@ -1077,9 +1089,9 @@ proc_exec_v(char **argv, const char *prog)
 	return -1;
     }
 
-#if defined(__EMX__) || defined(OS2)
+# if defined(__EMX__) || defined(OS2)
     {
-#define COMMAND "cmd.exe"
+#  define COMMAND "cmd.exe"
 	char *extension;
 
 	if ((extension = strrchr(prog, '.')) != NULL && STRCASECMP(extension, ".bat") == 0) {
@@ -1104,18 +1116,19 @@ proc_exec_v(char **argv, const char *prog)
 	    }
 	}
     }
-#endif /* __EMX__ */
+# endif /* __EMX__ */
     before_exec();
     execv(prog, argv);
     preserving_errno(try_with_sh(prog, argv); after_exec());
-#if defined(__EMX__) || defined(OS2)
+# if defined(__EMX__) || defined(OS2)
     if (new_argv) {
 	xfree(new_argv[0]);
 	xfree(new_argv);
     }
-#endif
+# endif
     return -1;
 }
+#endif
 
 int
 rb_proc_exec_n(int argc, VALUE *argv, const char *prog)
@@ -1137,6 +1150,13 @@ rb_proc_exec_n(int argc, VALUE *argv, const char *prog)
     return ret;
 }
 
+#ifdef __native_client__
+int
+rb_proc_exec(const char *str)
+{
+  rb_notimplement();
+}
+#else
 int
 rb_proc_exec(const char *str)
 {
@@ -1206,6 +1226,7 @@ rb_proc_exec(const char *str)
     return ret;
 #endif	/* _WIN32 */
 }
+#endif
 
 enum {
     EXEC_OPTION_PGROUP,