Unfortunately you’re not the only developer facing these build errors. They've been reported in #23810 https://gitlab.haskell.org/ghc/ghc/-/issues/23810 and #23789 https://gitlab.haskell.org/ghc/ghc/-/issues/23789. It might be worth pasting your workaround there too. Thanks, Rodrigo

On 8 Aug 2023, at 16:33, Viktor Dukhovni wrote:

The build was failing, because rts/OSThreads.h via Rts.h from libraries/bytestring/cbits/is-valid-utf8.c had no definition of `clockid_t`. This type is not exposed with _POSIX_C_SOURCE is not defined to a sufficiently high value:

SYNOPSIS #include

int clock_getres(clockid_t clockid, struct timespec *res);

int clock_gettime(clockid_t clockid, struct timespec *tp); int clock_settime(clockid_t clockid, const struct timespec *tp);

Link with -lrt (only for glibc versions before 2.17).

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

clock_getres(), clock_gettime(), clock_settime(): _POSIX_C_SOURCE >= 199309L

I quick-and-dirty work-around was:

--- a/libraries/bytestring/cbits/is-valid-utf8.c +++ b/libraries/bytestring/cbits/is-valid-utf8.c @@ -27,6 +27,10 @@ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#undef _POSIX_C_SOURCE +#define _POSIX_C_SOURCE 200809L +#undef _XOPEN_SOURCE +#define _XOPEN_SOURCE 700 #pragma GCC push_options #pragma GCC optimize("-O2") #include

There's surely a better solution.

-- Viktor. _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs