cc -O2 -pipe -pthread -I/usr/local/include  -Wall -Wextra -Werror=implicit-function-declaration libintl/dngettext_l.c -o libintl/dngettext_l -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE  -lm -lpthread -lrt -L/usr/local/lib  -lintl -lstdthreads -lcrypt
libintl/dngettext_l.c:20:18: error: call to undeclared function 'dngettext_l'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
   20 |         char* output0 = dngettext_l("os-test", input, input_plural, 0, locale);
      |                         ^
libintl/dngettext_l.c:20:18: note: did you mean 'dngettext'?
/usr/local/include/libintl.h:320:14: note: 'dngettext' declared here
  320 | extern char *dngettext (const char *__domainname,
      |              ^
libintl/dngettext_l.c:20:8: error: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion]
   20 |         char* output0 = dngettext_l("os-test", input, input_plural, 0, locale);
      |               ^         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libintl/dngettext_l.c:28:8: error: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion]
   28 |         char* output1 = dngettext_l("os-test", input, input_plural, 1, locale);
      |               ^         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libintl/dngettext_l.c:36:8: error: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion]
   36 |         char* output2 = dngettext_l("os-test", input, input_plural, 2, locale);
      |               ^         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libintl/dngettext_l.c:44:8: error: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion]
   44 |         char* output9 = dngettext_l("os-test", input, input_plural, 9, locale);
      |               ^         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 errors generated.