1dnl # 2dnl # Linux 5.15 gets rid of -isystem and external <stdarg.h> inclusion 3dnl # and ships its own <linux/stdarg.h>. Check if this header file does 4dnl # exist and provide all necessary definitions for variable argument 5dnl # functions. Adjust the inclusion of <stdarg.h> according to the 6dnl # results. 7dnl # 8AC_DEFUN([ZFS_AC_KERNEL_SRC_STANDALONE_LINUX_STDARG], [ 9 ZFS_LINUX_TEST_SRC([has_standalone_linux_stdarg], [ 10 #include <linux/stdarg.h> 11 12 #if !defined(va_start) || !defined(va_end) || \ 13 !defined(va_arg) || !defined(va_copy) 14 #error "<linux/stdarg.h> is invalid" 15 #endif 16 ],[]) 17]) 18 19AC_DEFUN([ZFS_AC_KERNEL_STANDALONE_LINUX_STDARG], [ 20 dnl # 21 dnl # Linux 5.15 ships its own stdarg.h and doesn't allow to 22 dnl # include compiler headers. 23 dnl # 24 AC_MSG_CHECKING([whether standalone <linux/stdarg.h> exists]) 25 ZFS_LINUX_TEST_RESULT([has_standalone_linux_stdarg], [ 26 AC_MSG_RESULT([yes]) 27 AC_DEFINE(HAVE_STANDALONE_LINUX_STDARG, 1, 28 [standalone <linux/stdarg.h> exists]) 29 ],[ 30 AC_MSG_RESULT([no]) 31 ]) 32]) 33