Snarl Compile errors

gistfile1.txt

/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:36:3: error: ‘for’ loop initial declarations are only allowed in C99 mode
   for (unsigned i = 0 ; i < count; i++) {
   ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:36:3: note: use option -std=c99 or -std=gnu99 to compile your code
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:38:7: warning: implicit declaration of function ‘htonll’ [-Wimplicit-function-declaration]
       last = FROM_DDB(vs[i]);
       ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c: In function ‘from_list’:
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:71:3: error: ‘for’ loop initial declarations are only allowed in C99 mode
   for (int i = 0; i < count; i++) {
   ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:76:5: warning: implicit declaration of function ‘ntohll’ [-Wimplicit-function-declaration]
     target[i] = TO_DDB(v);
     ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c: In function ‘realize’:
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:100:3: error: ‘for’ loop initial declarations are only allowed in C99 mode
   for (int i = 0; i < count; i++) {
   ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:104:9: error: ‘for’ loop initial declarations are only allowed in C99 mode
         for (int j = 0; j < i; j++) {
         ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c: At top level:
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:115:1: warning: return type defaults to ‘int’ [-Wreturn-type]
 derealize(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c: In function ‘derealize’:
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:131:3: error: ‘for’ loop initial declarations are only allowed in C99 mode
   for (int i = 0; i < count; i++) {
   ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c: At top level:
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:143:3: warning: initialization from incompatible pointer type [enabled by default]
   {"derealize",    1, derealize}
   ^
/root/snarl/_build/default/lib/mmath/c_src/bin_nif.c:143:3: warning: (near initialization for ‘nif_funcs[3].fptr’) [enabled by default]