Taken from: https://salsa.debian.org/glibc-team/glibc/-/blob/9ce19663f00176f30d6eab29fd14db3e7cd53dcf/debian/patches/hurd-i386/local-clock_gettime_MONOTONIC.diff Use the realtime clock for the monotonic clock. This is of course not a proper implementation (which is being done in Mach), but will permit to fix at least the iceweasel stack. vlc however doesn't build when _POSIX_CLOCK_SELECTION is enabled but _POSIX_TIMERS is not, and they refuse to fix that (see #765578), so disable the former. --- sysdeps/mach/hurd/bits/posix_opt.h | 2 +- sysdeps/unix/clock_gettime.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) Index: glibc-2.27/sysdeps/mach/clock_gettime.c =================================================================== --- glibc-2.27.orig/sysdeps/mach/clock_gettime.c +++ glibc-2.27/sysdeps/mach/clock_gettime.c @@ -31,6 +31,10 @@ __clock_gettime (clockid_t clock_id, str switch (clock_id) { case CLOCK_REALTIME: + case CLOCK_MONOTONIC: + case CLOCK_MONOTONIC_RAW: + case CLOCK_REALTIME_COARSE: + case CLOCK_MONOTONIC_COARSE: { /* __host_get_time can only fail if passed an invalid host_t. __mach_host_self could theoretically fail (producing an Index: glibc-2.27/rt/timer_create.c =================================================================== --- glibc-2.27.orig/rt/timer_create.c +++ glibc-2.27/rt/timer_create.c @@ -48,7 +48,7 @@ timer_create (clockid_t clock_id, struct return -1; } - if (clock_id != CLOCK_REALTIME) + if (clock_id != CLOCK_REALTIME && clock_id != CLOCK_MONOTONIC && clock_id != CLOCK_MONOTONIC_RAW && clock_id != CLOCK_REALTIME_COARSE && clock_id != CLOCK_MONOTONIC_COARSE) { __set_errno (EINVAL); return -1; Index: glibc-2.27/sysdeps/mach/hurd/bits/posix_opt.h =================================================================== --- glibc-2.27.orig/sysdeps/mach/hurd/bits/posix_opt.h +++ glibc-2.27/sysdeps/mach/hurd/bits/posix_opt.h @@ -163,10 +163,10 @@ #define _POSIX_THREAD_PROCESS_SHARED -1 /* The monotonic clock might be available. */ -#define _POSIX_MONOTONIC_CLOCK 0 +#define _POSIX_MONOTONIC_CLOCK 200809L -/* The clock selection interfaces are available. */ -#define _POSIX_CLOCK_SELECTION 200809L +/* The clock selection interfaces are not really available yet. */ +#define _POSIX_CLOCK_SELECTION -1 /* Advisory information interfaces could be available in future. */ #define _POSIX_ADVISORY_INFO 0 Index: glibc-upstream/sysdeps/posix/clock_getres.c =================================================================== --- glibc-upstream.orig/sysdeps/posix/clock_getres.c +++ glibc-upstream/sysdeps/posix/clock_getres.c @@ -52,6 +52,10 @@ __clock_getres (clockid_t clock_id, stru switch (clock_id) { case CLOCK_REALTIME: + case CLOCK_MONOTONIC: + case CLOCK_MONOTONIC_RAW: + case CLOCK_REALTIME_COARSE: + case CLOCK_MONOTONIC_COARSE: retval = realtime_getres (res); break; --- ./sysdeps/mach/clock_nanosleep.c.original 2020-07-21 00:31:35.226113142 +0200 +++ ./sysdeps/mach/clock_nanosleep.c 2020-07-21 00:31:49.026185761 +0200 @@ -62,7 +62,7 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, struct timespec *rem) { - if (clock_id != CLOCK_REALTIME + if ((clock_id != CLOCK_REALTIME && clock_id != CLOCK_MONOTONIC && clock_id != CLOCK_MONOTONIC_RAW && clock_id != CLOCK_REALTIME_COARSE && clock_id != CLOCK_MONOTONIC_COARSE) || !valid_nanoseconds (req->tv_nsec) || (flags != 0 && flags != TIMER_ABSTIME)) return EINVAL; Index: glibc-2.32/hurd/hurdlock.c =================================================================== --- glibc-2.32.orig/hurd/hurdlock.c +++ glibc-2.32/hurd/hurdlock.c @@ -47,7 +47,7 @@ int __lll_abstimed_wait (void *ptr, int val, const struct timespec *tsp, int flags, int clk) { - if (clk != CLOCK_REALTIME) + if (clk != CLOCK_REALTIME && clk != CLOCK_MONOTONIC) return EINVAL; int mlsec = compute_reltime (tsp, clk); @@ -59,7 +59,7 @@ int __lll_abstimed_wait_intr (void *ptr, int val, const struct timespec *tsp, int flags, int clk) { - if (clk != CLOCK_REALTIME) + if (clk != CLOCK_REALTIME && clk != CLOCK_MONOTONIC) return EINVAL; int mlsec = compute_reltime (tsp, clk); @@ -79,7 +79,7 @@ int __lll_abstimed_xwait (void *ptr, int lo, int hi, const struct timespec *tsp, int flags, int clk) { - if (clk != CLOCK_REALTIME) + if (clk != CLOCK_REALTIME && clk != CLOCK_MONOTONIC) return EINVAL; int mlsec = compute_reltime (tsp, clk); @@ -91,7 +91,7 @@ int __lll_abstimed_lock (void *ptr, const struct timespec *tsp, int flags, int clk) { - if (clk != CLOCK_REALTIME) + if (clk != CLOCK_REALTIME && clk != CLOCK_MONOTONIC) return EINVAL; if (__lll_trylock (ptr) == 0) @@ -177,7 +177,7 @@ __lll_robust_abstimed_lock (void *ptr, int wait_time = 25; unsigned int val; - if (clk != CLOCK_REALTIME) + if (clk != CLOCK_REALTIME && clk != CLOCK_MONOTONIC) return EINVAL; while (1) ges....* guix/scripts/package.scm (process-query) <'show>: Remove superseded packages. * tests/guix-package-aliases.sh: Add test.