current directory: /home/ubuntu/etude_for_ruby/vendor/bundle/ruby/2.4.0/gems/redcarpet-3.4.0/ext/redcarpet
/opt/circleci/ruby/ruby-2.4.0/bin/ruby -r ./siteconf20170417-14677-1q58qw4.rb extconf.rb
creating Makefile

current directory: /home/ubuntu/etude_for_ruby/vendor/bundle/ruby/2.4.0/gems/redcarpet-3.4.0/ext/redcarpet
make "DESTDIR=" clean

current directory: /home/ubuntu/etude_for_ruby/vendor/bundle/ruby/2.4.0/gems/redcarpet-3.4.0/ext/redcarpet
make "DESTDIR="
compiling autolink.c
compiling buffer.c
buffer.c: In function ‘bufcstr’:
buffer.c:111:2: warning: passing argument 1 of ‘bufgrow’ discards ‘const’ qualifier from pointer target type [enabled by default]
  if (buf->size + 1 <= buf->asize || bufgrow(buf, buf->size + 1) == BUF_OK) {
  ^
buffer.c:60:1: note: expected ‘struct buf *’ but argument is of type ‘const struct buf *’
 bufgrow(struct buf *buf, size_t neosz)
 ^
buffer.c: At top level:
cc1: warning: unrecognized command line option "-Wno-self-assign" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-constant-logical-operand" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-parentheses-equality" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-tautological-compare" [enabled by default]
compiling houdini_href_e.c
compiling houdini_html_e.c
compiling html.c
compiling html_smartypants.c
html_smartypants.c: In function ‘squote_len’:
html_smartypants.c:104:2: warning: initialization discards ‘const’ qualifier from pointer target type [enabled by default]
  static char* single_quote_list[] = { "'", "&#39;", "&#x27;", "&apos;", NULL };
  ^
html_smartypants.c:104:2: warning: initialization discards ‘const’ qualifier from pointer target type [enabled by default]
html_smartypants.c:104:2: warning: initialization discards ‘const’ qualifier from pointer target type [enabled by default]
html_smartypants.c:104:2: warning: initialization discards ‘const’ qualifier from pointer target type [enabled by default]
html_smartypants.c: In function ‘smartypants_squote’:
html_smartypants.c:149:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    uint8_t next_char = (size > 1+next_squote_len) ? text[1+next_squote_len] : 0;
                              ^
html_smartypants.c: In function ‘smartypants_cb__amp’:
html_smartypants.c:250:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
  int len = squote_len(text, size);
  ^
html_smartypants.c: At top level:
cc1: warning: unrecognized command line option "-Wno-self-assign" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-constant-logical-operand" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-parentheses-equality" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-tautological-compare" [enabled by default]
compiling markdown.c
markdown.c: In function ‘char_link’:
markdown.c:1045:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   struct buf id = { 0, 0, 0, 0 };
   ^
markdown.c:1085:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   size_t nb_p = 0;
   ^
markdown.c: In function ‘sd_markdown_render’:
markdown.c:2818:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
  int footnotes_enabled  = md->ext_flags & MKDEXT_FOOTNOTES;
  ^
markdown.c:2836:3: warning: passing argument 1 of ‘is_codefence’ discards ‘const’ qualifier from pointer target type [enabled by default]
   if (codefences_enabled && (is_codefence(document + beg, doc_size - beg, NULL) != 0))
   ^
markdown.c:1389:1: note: expected ‘uint8_t *’ but argument is of type ‘const uint8_t *’
 is_codefence(uint8_t *data, size_t size, struct buf *syntax)
 ^
markdown.c: At top level:
markdown.c:94:15: warning: ‘char_underline’ declared ‘static’ but never defined [-Wunused-function]
 static size_t char_underline(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
               ^
cc1: warning: unrecognized command line option "-Wno-self-assign" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-constant-logical-operand" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-parentheses-equality" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-tautological-compare" [enabled by default]
compiling rc_markdown.c
rc_markdown.c: In function ‘rb_redcarpet_md_render’:
rc_markdown.c:138:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
  struct rb_redcarpet_rndr *renderer;
  ^
rc_markdown.c: At top level:
cc1: warning: unrecognized command line option "-Wno-self-assign" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-constant-logical-operand" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-parentheses-equality" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-tautological-compare" [enabled by default]
compiling rc_render.c
rc_render.c: In function ‘rndr_link_attributes’:
rc_render.c:287:28: warning: variable ‘rndr’ set but not used [-Wunused-but-set-variable]
  struct rb_redcarpet_rndr *rndr;
                            ^
rc_render.c: At top level:
cc1: warning: unrecognized command line option "-Wno-self-assign" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-constant-logical-operand" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-parentheses-equality" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-tautological-compare" [enabled by default]
compiling stack.c
linking shared-object redcarpet.so

current directory: /home/ubuntu/etude_for_ruby/vendor/bundle/ruby/2.4.0/gems/redcarpet-3.4.0/ext/redcarpet
make "DESTDIR=" install
/usr/bin/install -c -m 0755 redcarpet.so ./.gem.20170417-14677-1vqvfcn