--- a/getopt.h 2026-04-07 15:14:48.565190070 +0200 +++ b/getopt.h 2026-04-07 15:17:07.788553013 +0200 @@ -117,7 +117,7 @@ #define optional_argument 2 #endif /* need getopt */ -#if defined(__GNU_LIBRARY__) || defined (WIN32) || defined (__CYGWIN__) +#if defined(__GNU_LIBRARY__) || defined (WIN32) || defined (__CYGWIN__) || defined(__linux__) /* Many other libraries have conflicting prototypes for getopt, with differences in the consts, in stdlib.h. To avoid compilation errors, only prototype getopt for the GNU C library. And not when --- a/getopt.c 2026-04-07 15:14:45.507226231 +0200 +++ b/getopt.c 2026-04-07 15:16:52.243736062 +0200 @@ -194,7 +194,7 @@ /* Value of POSIXLY_CORRECT environment variable. */ static char *posixly_correct; -#if defined(__GNU_LIBRARY__) || defined(WIN32) +#if defined(__GNU_LIBRARY__) || defined(WIN32) || defined(__linux__) /* We want to avoid inclusion of string.h with non-GNU libraries because there are many ways it can cause trouble. On some systems, it contains special magic macros that don't work