gistfile1.txt

Building native extensions.  This could take a while...
ERROR:  Error installing json:
	ERROR: Failed to build gem native extension.

    /usr/bin/ruby -r ./siteconf20150715-5754-1edqiwq.rb extconf.rb
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling generator.c
In file included from /usr/include/stdio.h:27:0,
                 from /usr/include/ruby-2.2.0/ruby/defines.h:26,
                 from /usr/include/ruby-2.2.0/ruby/ruby.h:29,
                 from /usr/include/ruby-2.2.0/ruby.h:33,
                 from ../fbuffer/fbuffer.h:5,
                 from generator.c:1:
/usr/include/features.h:328:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
 #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
    ^
In file included from generator.c:1:0:
../fbuffer/fbuffer.h: In function ‘fbuffer_to_s’:
../fbuffer/fbuffer.h:175:47: error: macro "rb_str_new" requires 2 arguments, but only 1 given
     VALUE result = rb_str_new(FBUFFER_PAIR(fb));
                                               ^
../fbuffer/fbuffer.h:175:20: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
     VALUE result = rb_str_new(FBUFFER_PAIR(fb));
                    ^
Makefile:237: recipe for target 'generator.o' failed
make: *** [generator.o] Error 1

make failed, exit code 2