JRuby support

[David Ekhaus <dekhaus@mac.com>]

Hi 

	Has anyone got io_splice working with JRuby ?

	Here are the errors from my mkmf.log - which were generated when I tried to run 'jruby setup.rb' …

Davids-MacBook-Pro:io_splice dekhaus$ more mkmf.log 
have_func: checking for splice() in fcntl.h... -------------------- no

cc -E -I. -I/Users/dekhaus/.rvm/rubies/jruby-1.7.0.RC2/lib/native/include/ruby -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE        -D_GNU_SOURCE=1  -fPIC -DTARGET_RT_MAC_CFM=0  -fno-omit-frame-pointer -fno-strict-aliasing  -fexceptions      conftest.c  |
   ruby -ne 'print if /.*splice.*/'
checked program was:
/* begin */
1: #include <ruby.h>
2: ["fcntl.h"]
3: /* top */
4: int main() { return 0; }
/* end */

"cc -o conftest -I. -I/Users/dekhaus/.rvm/rubies/jruby-1.7.0.RC2/lib/native/include/ruby -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE        -D_GNU_SOURCE=1  -fPIC -DTARGET_RT_MAC_CFM=0 -fno-omit-frame-pointer -fno-strict-aliasing  -fexceptions     conftest.c  -L"." -L"/Users/dekhaus/.rvm/rubies/jruby-1.7.0.RC2/lib"    -arch x86_64      "
conftest.c:6:53: error: use of undeclared identifier 'splice'
int t() { void ((*volatile p)()); p = (void ((*)()))splice; return 0; }
                                                   ^
1 error generated.
checked program was:
/* begin */
1: #include <ruby.h>
2: #include <fcntl.h>
3: 
4: /*top*/
5: int main() { return 0; }
6: int t() { void ((*volatile p)()); p = (void ((*)()))splice; return 0; }
/* end */

"cc -o conftest -I. -I/Users/dekhaus/.rvm/rubies/jruby-1.7.0.RC2/lib/native/include/ruby -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE        -D_GNU_SOURCE=1  -fPIC -DTARGET_RT_MAC_CFM=0 -fno-omit-frame-pointer -fno-strict-aliasing  -fexceptions     conftest.c  -L"." -L"/Users/dekhaus/.rvm/rubies/jruby-1.7.0.RC2/lib"    -arch x86_64      "
conftest.c:5:11: warning: implicit declaration of function 'splice' is invalid in C99 [-Wimplicit-function-declaration]
int t() { splice(); return 0; }
         ^
1 warning generated.
Undefined symbols for architecture x86_64:
 "_splice", referenced from:
     _t in conftest-QBZgrK.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include <fcntl.h>
2: 
3: /*top*/
4: int main() { return 0; }
5: int t() { splice(); return 0; }
/* end */


	Any help getting io_splice working with JRuby would be greatly appreciated.


Thanks
Dave