diff --git a/configure b/configure index 2c6eeead58c3fd701f42628ddb18e3dea21eda79..ae1841c591e813c9b940771bbba2df2ba5c9c844 100755 --- a/configure +++ b/configure @@ -485,6 +485,32 @@ check_exec(){ check_ld "$@" && { enabled cross_compile || $TMPE >>$logfile 2>&1; } } +check_exec_crash(){ + code=`cat` + + # exit() is not async signal safe. _Exit (C99) and _exit (POSIX) + # are safe but may not be available everywhere. Thus we use + # raise(SIGTERM) instead. The check is run in a subshell so we + # can redirect the "Terminated" message from the shell. SIGBUS + # is not defined by standard C so it is used conditionally. + + (check_exec "$@") >>$logfile 2>&1 <<EOF +#include <signal.h> +static void sighandler(int sig){ + raise(SIGTERM); +} +int main(){ + signal(SIGILL, sighandler); + signal(SIGFPE, sighandler); + signal(SIGSEGV, sighandler); +#ifdef SIGBUS + signal(SIGBUS, sighandler); +#endif + { $code } +} +EOF +} + require(){ name="$1" header="$2" @@ -1191,10 +1217,6 @@ ar="${cross_prefix}${ar}" ranlib="${cross_prefix}${ranlib}" strip="${cross_prefix}${strip}" -# Disable core dumps so that intentional execution of broken apps doesn't -# pollute the current directory. -ulimit -c 0 >/dev/null 2>&1 - # we need to build at least one lib type if disabled_all static shared; then cat <<EOF @@ -1397,26 +1419,16 @@ if test "$?" != 0; then fi if test $arch = "x86_32" -o $arch = "x86_64"; then - if test "$targetos" = mingw32 -o "$targetos" = cygwin; then - cat <<EOF -WARNING: The following test might cause a testapp to crash (intentionally) -resulting in the appearance of a dialog box. Please click "Don't send" and -ignore it. -EOF - fi - # check whether EBP is available on x86 # As 'i' is stored on the stack, this program will crash # if the base pointer is used to access it because the # base pointer is cleared in the inline assembly code. - (check_exec) <<EOF >>$logfile 2>&1 && enable ebp_available -int main(){ + check_exec_crash <<EOF && enable ebp_available volatile int i=0; asm volatile ( "xorl %%ebp, %%ebp" ::: "%ebp"); return i; -} EOF # check wether EBX is available on x86