1*b985c9caSMartin Matuskadnl 2*b985c9caSMartin Matuskadnl backtrace(), for userspace assertions. glibc has this directly in libc. 3*b985c9caSMartin Matuskadnl FreeBSD and (sometimes) musl have it in a separate -lexecinfo. It's assumed 4*b985c9caSMartin Matuskadnl that this will also get the companion function backtrace_symbols(). 5*b985c9caSMartin Matuskadnl 6*b985c9caSMartin MatuskaAC_DEFUN([ZFS_AC_CONFIG_USER_BACKTRACE], [ 7*b985c9caSMartin Matuska AX_SAVE_FLAGS 8*b985c9caSMartin Matuska LIBS="" 9*b985c9caSMartin Matuska AC_SEARCH_LIBS([backtrace], [execinfo], [ 10*b985c9caSMartin Matuska AC_DEFINE(HAVE_BACKTRACE, 1, [backtrace() is available]) 11*b985c9caSMartin Matuska AC_SUBST([BACKTRACE_LIBS], ["$LIBS"]) 12*b985c9caSMartin Matuska ]) 13*b985c9caSMartin Matuska AX_RESTORE_FLAGS 14*b985c9caSMartin Matuska]) 15