x86_64-managarm-gcc -pthread   -Wall -Wextra -Werror=implicit-function-declaration nl_types/catopen.c -o nl_types/catopen -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt  -lintl -liconv -lintl -liconv
nl_types/catopen.c: In function ‘main’:
nl_types/catopen.c:107:9: error: unknown type name ‘nl_catd’
  107 |         nl_catd cat = catopen(cat_path, 0);
      |         ^~~~~~~
nl_types/catopen.c:107:23: error: implicit declaration of function ‘catopen’; did you mean ‘popen’? [-Wimplicit-function-declaration]
  107 |         nl_catd cat = catopen(cat_path, 0);
      |                       ^~~~~~~
      |                       popen
nl_types/catopen.c:108:22: error: ‘nl_catd’ undeclared (first use in this function)
  108 |         if ( cat == (nl_catd) -1 )
      |                      ^~~~~~~
nl_types/catopen.c:108:22: note: each undeclared identifier is reported only once for each function it appears in