1*53b70c86SMartin Matuskadnl # 2*53b70c86SMartin Matuskadnl # Linux 5.15 gets rid of -isystem and external <stdarg.h> inclusion 3*53b70c86SMartin Matuskadnl # and ships its own <linux/stdarg.h>. Check if this header file does 4*53b70c86SMartin Matuskadnl # exist and provide all necessary definitions for variable argument 5*53b70c86SMartin Matuskadnl # functions. Adjust the inclusion of <stdarg.h> according to the 6*53b70c86SMartin Matuskadnl # results. 7*53b70c86SMartin Matuskadnl # 8*53b70c86SMartin MatuskaAC_DEFUN([ZFS_AC_KERNEL_SRC_STANDALONE_LINUX_STDARG], [ 9*53b70c86SMartin Matuska ZFS_LINUX_TEST_SRC([has_standalone_linux_stdarg], [ 10*53b70c86SMartin Matuska #include <linux/stdarg.h> 11*53b70c86SMartin Matuska 12*53b70c86SMartin Matuska #if !defined(va_start) || !defined(va_end) || \ 13*53b70c86SMartin Matuska !defined(va_arg) || !defined(va_copy) 14*53b70c86SMartin Matuska #error "<linux/stdarg.h> is invalid" 15*53b70c86SMartin Matuska #endif 16*53b70c86SMartin Matuska ],[]) 17*53b70c86SMartin Matuska]) 18*53b70c86SMartin Matuska 19*53b70c86SMartin MatuskaAC_DEFUN([ZFS_AC_KERNEL_STANDALONE_LINUX_STDARG], [ 20*53b70c86SMartin Matuska dnl # 21*53b70c86SMartin Matuska dnl # Linux 5.15 ships its own stdarg.h and doesn't allow to 22*53b70c86SMartin Matuska dnl # include compiler headers. 23*53b70c86SMartin Matuska dnl # 24*53b70c86SMartin Matuska AC_MSG_CHECKING([whether standalone <linux/stdarg.h> exists]) 25*53b70c86SMartin Matuska ZFS_LINUX_TEST_RESULT([has_standalone_linux_stdarg], [ 26*53b70c86SMartin Matuska AC_MSG_RESULT([yes]) 27*53b70c86SMartin Matuska AC_DEFINE(HAVE_STANDALONE_LINUX_STDARG, 1, 28*53b70c86SMartin Matuska [standalone <linux/stdarg.h> exists]) 29*53b70c86SMartin Matuska ],[ 30*53b70c86SMartin Matuska AC_MSG_RESULT([no]) 31*53b70c86SMartin Matuska ]) 32*53b70c86SMartin Matuska]) 33