Building mruby w/ Emscripten

gistfile1.txt

make -C mrblib --no-print-directory CC=/Users/ashley/Developer/emscripten/emcc LL=/Users/ashley/Developer/emscripten/emcc
make -C ../tools/mrbc --no-print-directory CC=/Users/ashley/Developer/emscripten/emcc LL=/Users/ashley/Developer/emscripten/emcc
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/../tools/mrbc/mrbc.c -o ../../src/../tools/mrbc/mrbc.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/array.c -o ../../src/array.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/array.c:922:9: warning: variable 'times' is uninitialized when used here [-Wuninitialized]
  while(times--) {
        ^~~~~
../../src/array.c:916:16: note: initialize the variable 'times' to silence this warning
  mrb_int times;
               ^
                = 0
1 warning generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/ascii.c -o ../../src/ascii.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/cdump.c -o ../../src/cdump.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/class.c -o ../../src/class.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/class.c:26:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_MAP_INIT_INT(mt, struct RProc*);
^
../../src/ritehash.h:200:5: note: expanded from:
    KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
    ^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/class.c:27:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_MAP_INIT_INT(iv, mrb_value);
^
../../src/ritehash.h:200:5: note: expanded from:
    KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
    ^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/class.c:292:7: warning: unused variable 'ret' [-Wunused-variable]
  int ret;
      ^
../../src/class.c:320:7: warning: unused variable 'ret' [-Wunused-variable]
  int ret;
      ^
../../src/class.c:942:15: warning: 25 enumeration values not handled in switch: 'MRB_TT_FALSE', 'MRB_TT_FREE',
      'MRB_TT_TRUE'... [-Wswitch-enum]
      switch (mrb_type(klass)) {
              ^
../../src/../include/mruby.h:74:23: note: expanded from:
#define mrb_type(o)   (o).tt
                      ^
5 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/codegen.c -o ../../src/codegen.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/compar.c -o ../../src/compar.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/crc.c -o ../../src/crc.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/dump.c -o ../../src/dump.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/encoding.c -o ../../src/encoding.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/encoding.c:643:5: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
    ENCODING_SET_INLINED(obj, idx);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
../../src/encoding.c:646:3: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
  ENCODING_SET_INLINED(obj, ENCODING_INLINE_MAX);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
../../src/encoding.c:900:3: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
  ENCODING_CODERANGE_SET(mrb, str, mrb_usascii_encindex(), ENC_CODERANGE_7BIT);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:89:9: note: expanded from:
        ENCODING_SET(mrb, mrb_encoding_coderange_obj, (encindex)); \
        ^
../../src/encoding.h:50:9: note: expanded from:
        ENCODING_SET_INLINED(mrb_encoding_set_obj, encoding_set_enc_index); \
        ^
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
../../src/encoding.c:88:1: warning: unused function 'enc_memsize' [-Wunused-function]
enc_memsize(mrb_state *mrb, const void *p)
^
4 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/enum.c -o ../../src/enum.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/error.c -o ../../src/error.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/error.c:409:1: warning: unused function 'mrb_exc_c_exception' [-Wunused-function]
mrb_exc_c_exception(mrb_state *mrb, mrb_value exc)
^
../../src/error.c:419:1: warning: unused function 'mrb_exc_exception' [-Wunused-function]
mrb_exc_exception(mrb_state *mrb, mrb_value exc)
^
2 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/etc.c -o ../../src/etc.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/etc.c:34:14: warning: assigning to 'struct mrb_data_type *' from 'const struct mrb_data_type *'
      discards qualifiers [-Wincompatible-pointer-types]
  data->type = type;
             ^ ~~~~
1 warning generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/gc.c -o ../../src/gc.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/gc.c:291:11: warning: 13 enumeration values not handled in switch: 'MRB_TT_FALSE', 'MRB_TT_FREE',
      'MRB_TT_TRUE'... [-Wswitch-enum]
  switch (obj->tt) {
          ^
../../src/gc.c:387:11: warning: 9 enumeration values not handled in switch: 'MRB_TT_FALSE', 'MRB_TT_FREE',
      'MRB_TT_UNDEF'... [-Wswitch-enum]
  switch (obj->tt) {
          ^
../../src/gc.c:487:11: warning: 13 enumeration values not handled in switch: 'MRB_TT_FALSE', 'MRB_TT_FREE',
      'MRB_TT_TRUE'... [-Wswitch-enum]
  switch (obj->tt) {
          ^
In file included from ../../src/gc.c:14:
../../src/ritehash.h:20:16: warning: unused variable '__m' [-Wunused-variable]
static uint8_t __m[8] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80};
               ^
4 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/hash.c -o ../../src/hash.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/hash.c:42:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_INIT(ht, mrb_value, mrb_value, 1, mrb_hash_ht_hash_func, mrb_hash_ht_hash_equal);
^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/hash.c:167:7: warning: unused variable 'r' [-Wunused-variable]
  int r;
      ^
../../src/hash.c:223:7: warning: unused variable 'r' [-Wunused-variable]
  int r;
      ^
../../src/hash.c:619:7: warning: unused variable 'r' [-Wunused-variable]
  int r;
      ^
../../src/hash.c:206:1: warning: unused function 'hash_s_new' [-Wunused-function]
hash_s_new(mrb_state *mrb, mrb_value klass)
^
5 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/init.c -o ../../src/init.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/kernel.c -o ../../src/kernel.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/kernel.c:29:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_MAP_INIT_INT(mt, struct RProc*);
^
../../src/ritehash.h:200:5: note: expanded from:
    KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
    ^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/kernel.c:30:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_MAP_INIT_INT(iv, mrb_value);
^
../../src/ritehash.h:200:5: note: expanded from:
    KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
    ^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/kernel.c:390:13: warning: 24 enumeration values not handled in switch: 'MRB_TT_FALSE',
      'MRB_TT_FREE', 'MRB_TT_TRUE'... [-Wswitch-enum]
    switch (mrb_type(obj)) {
            ^
../../src/../include/mruby.h:74:23: note: expanded from:
#define mrb_type(o)   (o).tt
                      ^
../../src/kernel.c:633:16: warning: unused variable 'klass' [-Wunused-variable]
  mrb_value b, klass;
               ^
../../src/kernel.c:631:14: warning: unused variable 'argv' [-Wunused-variable]
  mrb_value *argv;
             ^
../../src/kernel.c:632:7: warning: unused variable 'argc' [-Wunused-variable]
  int argc;
      ^
6 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/numeric.c -o ../../src/numeric.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/numeric.c:173:1: warning: unused function 'coerce_rescue' [-Wunused-function]
coerce_rescue(mrb_state *mrb, mrb_value *x)
^
1 warning generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/object.c -o ../../src/object.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/pool.c -o ../../src/pool.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/print.c -o ../../src/print.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/proc.c -o ../../src/proc.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/proc.c:33:40: warning: incompatible pointer types passing 'struct REnv *' to parameter of type
      'struct RClass *' [-Wincompatible-pointer-types]
    e = mrb_obj_alloc(mrb, MRB_TT_ENV, mrb->ci->proc->env);
                                       ^~~~~~~~~~~~~~~~~~
../../src/../include/mruby.h:342:63: note: passing argument to parameter here
void *mrb_obj_alloc(mrb_state*, enum mrb_vtype, struct RClass*);
                                                              ^
1 warning generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/range.c -o ../../src/range.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/re.c -o ../../src/re.o
clang: warning: argument unused during compilation: '-nostdinc++'
In file included from ../../src/re.c:10:
../../src/ritehash.h:20:16: warning: unused variable '__m' [-Wunused-variable]
static uint8_t __m[8] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80};
               ^
1 warning generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/regcomp.c -o ../../src/regcomp.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/regenc.c -o ../../src/regenc.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/regerror.c -o ../../src/regerror.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/regexec.c -o ../../src/regexec.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/regparse.c -o ../../src/regparse.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/sprintf.c -o ../../src/sprintf.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/st.c -o ../../src/st.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/state.c -o ../../src/state.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/string.c -o ../../src/string.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/string.c:90:3: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
  ENCODING_CODERANGE_SET(mrb, str, mrb_usascii_encindex(), ENC_CODERANGE_7BIT);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:89:9: note: expanded from:
        ENCODING_SET(mrb, mrb_encoding_coderange_obj, (encindex)); \
        ^
../../src/encoding.h:50:9: note: expanded from:
        ENCODING_SET_INLINED(mrb_encoding_set_obj, encoding_set_enc_index); \
        ^
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
../../src/string.c:152:11: warning: comparison of unsigned expression < 0 is always false
      [-Wtautological-compare]
  if (len < 0) {
      ~~~ ^ ~
../../src/string.c:176:5: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
    ENCODING_CODERANGE_SET(mrb, str, mrb_usascii_encindex(), ENC_CODERANGE_7BIT);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:89:9: note: expanded from:
        ENCODING_SET(mrb, mrb_encoding_coderange_obj, (encindex)); \
        ^
../../src/encoding.h:50:9: note: expanded from:
        ENCODING_SET_INLINED(mrb_encoding_set_obj, encoding_set_enc_index); \
        ^
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
../../src/string.c:513:11: warning: comparison of unsigned expression < 0 is always false
      [-Wtautological-compare]
  if (len < 0) {
      ~~~ ^ ~
../../src/string.c:604:11: warning: comparison of unsigned expression < 0 is always false
      [-Wtautological-compare]
  if (len < 0) {
      ~~~ ^ ~
../../src/string.c:792:3: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
  ENCODING_CODERANGE_SET(mrb, str3, mrb_enc_to_index(enc),
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:89:9: note: expanded from:
        ENCODING_SET(mrb, mrb_encoding_coderange_obj, (encindex)); \
        ^
../../src/encoding.h:50:9: note: expanded from:
        ENCODING_SET_INLINED(mrb_encoding_set_obj, encoding_set_enc_index); \
        ^
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
../../src/string.c:2321:13: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
            ENCODING_CODERANGE_SET(mrb, str, ptr_encindex, ptr_cr);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:89:9: note: expanded from:
        ENCODING_SET(mrb, mrb_encoding_coderange_obj, (encindex)); \
        ^
../../src/encoding.h:50:9: note: expanded from:
        ENCODING_SET_INLINED(mrb_encoding_set_obj, encoding_set_enc_index); \
        ^
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
../../src/string.c:2378:3: warning: implicit truncation from 'unsigned int' to bitfield changes value from
      4293919743 to 1049599 [-Wconstant-conversion]
  ENCODING_CODERANGE_SET(mrb, str, res_encindex, res_cr);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/encoding.h:89:9: note: expanded from:
        ENCODING_SET(mrb, mrb_encoding_coderange_obj, (encindex)); \
        ^
../../src/encoding.h:50:9: note: expanded from:
        ENCODING_SET_INLINED(mrb_encoding_set_obj, encoding_set_enc_index); \
        ^
../../src/encoding.h:43:24: note: expanded from:
    RBASIC(obj)->flags &= ~ENCODING_MASK;\
                       ^
8 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/struct.c -o ../../src/struct.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/struct.c:34:18: warning: unused function 'struct_alloc' [-Wunused-function]
static mrb_value struct_alloc(mrb_state *mrb, mrb_value);
                 ^
1 warning generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/symbol.c -o ../../src/symbol.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/symbol.c:26:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_MAP_INIT_INT(s2n, const char*);
^
../../src/ritehash.h:200:5: note: expanded from:
    KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
    ^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/symbol.c:27:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_MAP_INIT_STR(n2s, mrb_sym);
^
../../src/ritehash.h:203:5: note: expanded from:
    KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
    ^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/symbol.c:35:7: warning: unused variable 'r' [-Wunused-variable]
  int r;
      ^
3 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/transcode.c -o ../../src/transcode.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/unicode.c -o ../../src/unicode.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/us_ascii.c -o ../../src/us_ascii.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/utf_8.c -o ../../src/utf_8.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/variable.c -o ../../src/variable.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/variable.c:22:1: warning: unused variable 'old_d_flags' [-Wunused-variable]
KHASH_MAP_INIT_INT(iv, mrb_value);
^
../../src/ritehash.h:200:5: note: expanded from:
    KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
    ^
../../src/ritehash.h:111:14: note: expanded from:
    uint8_t *old_d_flags = h->d_flags;                                  \
             ^
../../src/variable.c:64:12: warning: unused variable 'k' [-Wunused-variable]
  khiter_t k;
           ^
../../src/variable.c:118:7: warning: unused variable 'r' [-Wunused-variable]
  int r;
      ^
../../src/variable.c:183:7: warning: unused variable 'r' [-Wunused-variable]
  int r;
      ^
4 warnings generated.
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/version.c -o ../../src/version.o
clang: warning: argument unused during compilation: '-nostdinc++'
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/vm.c -o ../../src/vm.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/vm.c:880:11: warning: unused variable 'k' [-Wunused-variable]
      int k  = (ax>>2)&0x1f;
          ^
../../src/vm.c:881:11: warning: unused variable 'kd' [-Wunused-variable]
      int kd = (ax>>1)&0x1;
          ^
../../src/vm.c:882:11: warning: unused variable 'b' [-Wunused-variable]
      int b  = (ax>>0)& 0x1;
          ^
../../src/vm.c:956:6: warning: unused variable 'ridx' [-Wunused-variable]
        int ridx;
            ^
4 warnings generated.
bison -o ../../src/y.tab.c ../../src/parse.y
/Users/ashley/Developer/emscripten/emcc -Wall -Werror-implicit-function-declaration -g -MMD -I../../src -I../../src/../include -c ../../src/y.tab.c -o ../../src/y.tab.o
clang: warning: argument unused during compilation: '-nostdinc++'
../../src/parse.y:4650:21: warning: incompatible pointer to integer conversion assigning to 'int' from
      'void *';
  p->capture_errors = NULL;
                    ^ ~~~~
1 warning generated.
/Users/ashley/Developer/emscripten/emcc -o ../../bin/mrbc ../../src/../tools/mrbc/mrbc.o ../../src/array.o ../../src/ascii.o ../../src/cdump.o ../../src/class.o ../../src/codegen.o ../../src/compar.o ../../src/crc.o ../../src/dump.o ../../src/encoding.o ../../src/enum.o ../../src/error.o ../../src/etc.o ../../src/gc.o ../../src/hash.o ../../src/init.o ../../src/kernel.o ../../src/numeric.o ../../src/object.o ../../src/pool.o ../../src/print.o ../../src/proc.o ../../src/range.o ../../src/re.o ../../src/regcomp.o ../../src/regenc.o ../../src/regerror.o ../../src/regexec.o ../../src/regparse.o ../../src/sprintf.o ../../src/st.o ../../src/state.o ../../src/string.o ../../src/struct.o ../../src/symbol.o ../../src/transcode.o ../../src/unicode.o ../../src/us_ascii.o ../../src/utf_8.o ../../src/variable.o ../../src/version.o ../../src/vm.o   ../../src/y.tab.o -lm
make: built targets of /Users/ashley/Developer/mruby/tools/mrbc
cat array.rb compar.rb enum.rb error.rb hash.rb kernel.rb numeric.rb print.rb range.rb string.rb struct.rb > mrblib.rbtmp
../bin/mrbc -Bmrblib_irep -omrblib.ctmp mrblib.rbtmp; cat init_mrblib.c mrblib.ctmp > mrblib.c
/bin/sh: ../bin/mrbc: cannot execute binary file
cat: mrblib.ctmp: No such file or directory
make[1]: *** [mrblib.c] Error 1
make: *** [src/mrblib/mrblib.o] Error 2

Nope, I gave up! I've little experience with Emscripten, and I rarely use compiled languages, so I'm probably not the best person to try and get this up and running. It was just something I wanted to quickly test, and I probably would have ran with it a bit further if it hadn't of conked-out at the first hurdle. :)

Hi there,

I found this gist via Google. And if you are still interested, I successfully made this working. The source code is at https://github.com/xxuejie/mruby-browser. Feel free to take a look!