cc -O2 -pipe  -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations langinfo/ABALTMON_5.c -o langinfo/ABALTMON_5 -D_POSIX_C_SOURCE=202405L  -lm -lpthread 
langinfo/ABALTMON_5.c:2:17: error: use of undeclared identifier 'ABALTMON_5'
int const foo = ABALTMON_5;
                ^
1 error generated.