| From e6fbad0c122ba8e87b67a9e2447505adcaafe204 Mon Sep 17 00:00:00 2001 |
| From: Khem Raj <raj.khem@gmail.com> |
| Date: Wed, 29 Mar 2017 16:31:38 -0700 |
| Subject: [PATCH] Remove runtime check for CLOCK_MONOTONIC |
| |
| Does not work during cross compile |
| |
| use a compile-time check to detect whether the |
| monotonic clock is available. This check can run just fine when we are |
| cross-compiling. |
| |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| configure.ac | 12 ++++++++++-- |
| 1 file changed, 10 insertions(+), 2 deletions(-) |
| |
| diff --git a/configure.ac b/configure.ac |
| index fa13ae6..f4f0f46 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -175,9 +175,17 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM( |
| ) |
| |
| AC_MSG_CHECKING(for a working clock_getres(CLOCK_MONOTONIC, &ts)) |
| -AC_RUN_IFELSE([AC_LANG_PROGRAM( |
| +AC_COMPILE_IFELSE([AC_LANG_PROGRAM( |
| [[#include <time.h>]], |
| -[[struct timespec ts; if(clock_getres(CLOCK_MONOTONIC, &ts)) return -1;]])], |
| +[[ |
| +#include <unistd.h> |
| +int main() { |
| +#if !(defined(_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 && defined(CLOCK_MONOTONIC)) |
| + #error No monotonic clock |
| +#endif |
| + return 0; |
| + |
| +]])], |
| [ |
| AC_MSG_RESULT([yes]) |
| AC_DEFINE_UNQUOTED([HAVE_CLOCK_GETRES_MONOTONIC], 1, [Define to 1 if clock_getres(CLOCK_MONOTONIC, &ts) works]) |
| -- |
| 2.12.1 |
| |