(auto/yes/no/<python-program>)
--with-guile[=GUILE] include guile support
(auto/yes/no/<guile-version>/<pkg-config-program>)
- --with-intel-pt include Intel(R) Processor Trace support (auto/yes/no)
+ --with-intel-pt include Intel(R) Processor Trace support
+ (auto/yes/no)
--with-libipt-prefix[=DIR] search for libipt in DIR/include and DIR/lib
--without-libipt-prefix don't search for libipt in includedir and libdir
--without-included-regex
$as_echo "$as_me: WARNING: Intel(R) Processor Trace support disabled; some features may be unavailable." >&2;}
HAVE_LIBIPT=no
else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#include <linux/perf_event.h>
+#ifndef PERF_ATTR_SIZE_VER5
+# error
+#endif
+
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ perf_event=yes
+else
+ perf_event=no
+fi
+rm -f conftest.err conftest.$ac_ext
+ if test "$perf_event" != yes; then
+ if test "$with_intel_pt" = yes; then
+ as_fn_error "linux/perf_event.h missing or too old" "$LINENO" 5
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: linux/perf_event.h missing or too old; some features may be unavailable." >&5
+$as_echo "$as_me: WARNING: linux/perf_event.h missing or too old; some features may be unavailable." >&2;}
+ fi
+ fi
+
# Checks for types. #
# ------------------ #
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking return type of signal handlers" >&5
-$as_echo_n "checking return type of signal handlers... " >&6; }
-if test "${ac_cv_type_signal+set}" = set; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <sys/types.h>
-#include <signal.h>
-
-int
-main ()
-{
-return *(signal (0, 0)) (0) == 1;
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
- ac_cv_type_signal=int
-else
- ac_cv_type_signal=void
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_signal" >&5
-$as_echo "$ac_cv_type_signal" >&6; }
-
-cat >>confdefs.h <<_ACEOF
-#define RETSIGTYPE $ac_cv_type_signal
-_ACEOF
-
-
ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "#include <sys/types.h>
#include <sys/socket.h>