Have to include ctype.h to make it known. Fixes: e76bb37940181 ("src: allow for variables in the log prefix string") Signed-off-by: Phil Sutter <phil@xxxxxx> --- src/parser_bison.y | 1 + 1 file changed, 1 insertion(+) diff --git a/src/parser_bison.y b/src/parser_bison.y index 136ae105f5132..c0a9dc52963ea 100644 --- a/src/parser_bison.y +++ b/src/parser_bison.y @@ -10,6 +10,7 @@ %{ +#include <ctype.h> #include <stddef.h> #include <stdio.h> #include <inttypes.h> -- 2.31.1