diff options
| -rw-r--r-- | tools/build/cross-build/include/linux/unistd.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/build/cross-build/include/linux/unistd.h b/tools/build/cross-build/include/linux/unistd.h index 9d1bd1bf4025..ea131f1ab732 100644 --- a/tools/build/cross-build/include/linux/unistd.h +++ b/tools/build/cross-build/include/linux/unistd.h @@ -41,9 +41,17 @@ /* Ensure that unistd.h pulls in getopt */ #define __USE_POSIX2 #endif +/* + * Before version 2.25, glibc's unistd.h would define the POSIX subset of + * getopt.h by defining __need_getopt, including getopt.h (which would + * disable the header guard) and then undefining it so later including + * getopt.h explicitly would define the extensions. However, we wrap getopt, + * and so the wrapper's #pragma once breaks that. Thus getopt.h must be + * included before the real unistd.h to ensure we get all the extensions. + */ +#include <getopt.h> #include_next <unistd.h> #include <fcntl.h> -#include <getopt.h> #include <stdlib.h> #include <string.h> #include <sys/syscall.h> |