mar...@duskware.de (Martin Husemann) writes: > > c++ -dM -E - < /dev/null | fgrep __STDC_VERSION__ >#define __STDC_VERSION__ 201710L > > c++ -dM -E - < /dev/null | fgrep __ISO
There is magic involved. % touch c.c % ls -l c.c -rw-r--r-- 1 mlelstv staff 0 Mar 31 17:28 c.c % c++ -dM -E - < c.c | grep STDC #define __STDC_HOSTED__ 1 #define __STDC_UTF_16__ 1 #define __STDC_VERSION__ 201710L #define __GNUC_STDC_INLINE__ 1 #define __STDC_UTF_32__ 1 #define __STDC__ 1 % c++ -dM -E c.c | grep STDC #define __STDC_HOSTED__ 1 #define __STDC_UTF_16__ 1 #define __GNUC_STDC_INLINE__ 1 #define __STDC_UTF_32__ 1 #define __STDC__ 1