libffi check
`
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if libffi works" >&5
$as_echo_n "checking if libffi works... " >&6; }
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $LIBFFI_CFLAGS"
OLD_LIBS="$LIBS"
LIBS="$LIBS $LIBFFI_LIBS"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
ffi_call(NULL, NULL, NULL, NULL);
return 0;
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
LIBFFI_WORKS=yes
else
LIBFFI_WORKS=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
CFLAGS="$OLD_CFLAGS"
LIBS="$OLD_LIBS"
`