cannot compile v0.9 on macOS

[MarDiehl]

Updating the Conda package for macOS (Intel) fails due to missing CLOCK_MONOTONIC (and undefined clock_gettime). It runs on macOS 11.7.10, so according to https://stackoverflow.com/questions/5167269/, it should be available.

2023-09-25T15:52:11.3088370Z   CC    internal/fy_thread-fy-thread.o
2023-09-25T15:52:11.4318500Z internal/fy-thread.c:190:2: warning: call to undeclared function 'clock_gettime'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2023-09-25T15:52:11.4320030Z         clock_gettime(CLOCK_MONOTONIC, &s->execute);
2023-09-25T15:52:11.4320900Z         ^
2023-09-25T15:52:11.4329150Z internal/fy-thread.c:190:16: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4330310Z         clock_gettime(CLOCK_MONOTONIC, &s->execute);
2023-09-25T15:52:11.4330730Z                       ^
2023-09-25T15:52:11.4336880Z internal/fy-thread.c:232:3: warning: call to undeclared function 'clock_gettime'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2023-09-25T15:52:11.4337890Z                 clock_gettime(CLOCK_MONOTONIC, &s->reserve);
2023-09-25T15:52:11.4338280Z                 ^
2023-09-25T15:52:11.4348520Z internal/fy-thread.c:232:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4349510Z                 clock_gettime(CLOCK_MONOTONIC, &s->reserve);
2023-09-25T15:52:11.4350030Z                               ^
2023-09-25T15:52:11.4360740Z internal/fy-thread.c:239:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4361980Z                 clock_gettime(CLOCK_MONOTONIC, &s->reserve_done);
2023-09-25T15:52:11.4362640Z                               ^
2023-09-25T15:52:11.4363350Z internal/fy-thread.c:245:3: warning: call to undeclared function 'clock_gettime'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2023-09-25T15:52:11.4363970Z                 clock_gettime(CLOCK_MONOTONIC, &s->submit);
2023-09-25T15:52:11.4364430Z                 ^
2023-09-25T15:52:11.4372790Z internal/fy-thread.c:245:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4373840Z                 clock_gettime(CLOCK_MONOTONIC, &s->submit);
2023-09-25T15:52:11.4374230Z                               ^
2023-09-25T15:52:11.4375880Z internal/fy-thread.c:255:3: warning: call to undeclared function 'clock_gettime'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2023-09-25T15:52:11.4376660Z                 clock_gettime(CLOCK_MONOTONIC, &s->wait);
2023-09-25T15:52:11.4377070Z                 ^
2023-09-25T15:52:11.4386110Z internal/fy-thread.c:255:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4387090Z                 clock_gettime(CLOCK_MONOTONIC, &s->wait);
2023-09-25T15:52:11.4387440Z                               ^
2023-09-25T15:52:11.4397570Z internal/fy-thread.c:260:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4398790Z                 clock_gettime(CLOCK_MONOTONIC, &s->wait_done);
2023-09-25T15:52:11.4399150Z                               ^
2023-09-25T15:52:11.4399760Z internal/fy-thread.c:266:3: warning: call to undeclared function 'clock_gettime'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2023-09-25T15:52:11.4401020Z                 clock_gettime(CLOCK_MONOTONIC, &s->unreserve);
2023-09-25T15:52:11.4401430Z                 ^
2023-09-25T15:52:11.4412050Z internal/fy-thread.c:266:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4413930Z                 clock_gettime(CLOCK_MONOTONIC, &s->unreserve);
2023-09-25T15:52:11.4414970Z                               ^
2023-09-25T15:52:11.4426790Z internal/fy-thread.c:271:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4427340Z                 clock_gettime(CLOCK_MONOTONIC, &s->unreserve_done);
2023-09-25T15:52:11.4429510Z                               ^
2023-09-25T15:52:11.4452990Z internal/fy-thread.c:435:2: warning: call to undeclared function 'clock_gettime'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2023-09-25T15:52:11.4454070Z         clock_gettime(CLOCK_MONOTONIC, &before);
2023-09-25T15:52:11.4454410Z         ^
2023-09-25T15:52:11.4464610Z internal/fy-thread.c:435:16: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4465640Z         clock_gettime(CLOCK_MONOTONIC, &before);
2023-09-25T15:52:11.4466000Z                       ^
2023-09-25T15:52:11.4481010Z internal/fy-thread.c:439:16: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4481480Z         clock_gettime(CLOCK_MONOTONIC, &after);
2023-09-25T15:52:11.4481910Z                       ^
2023-09-25T15:52:11.4493380Z internal/fy-thread.c:442:16: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4494530Z         clock_gettime(CLOCK_MONOTONIC, &before);
2023-09-25T15:52:11.4494880Z                       ^
2023-09-25T15:52:11.4504860Z internal/fy-thread.c:444:16: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4505740Z         clock_gettime(CLOCK_MONOTONIC, &after);
2023-09-25T15:52:11.4506330Z                       ^
2023-09-25T15:52:11.4520190Z internal/fy-thread.c:465:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4521040Z                 clock_gettime(CLOCK_MONOTONIC, &before);
2023-09-25T15:52:11.4521810Z                               ^
2023-09-25T15:52:11.4536490Z internal/fy-thread.c:492:17: error: use of undeclared identifier 'CLOCK_MONOTONIC'
2023-09-25T15:52:11.4544970Z                 clock_gettime(CLOCK_MONOTONIC, &after);
2023-09-25T15:52:11.4545350Z  

[pantoniou]

I'm not sure what the issue is. The one mac-os host that I have available seems to compile it just fine (using a homebrew installtion).

I'm on a somewhat older version though (10.13).

What's the environment the build fails?

[pantoniou]

https://github.com/pocoproject/poco/issues/1453

Seems like clock_gettime is not available on some old? versions of MacOSX.

Although I'm on an older version, I've updated recently and the support is available.

From man clock_gettime() on my mac box.

"These functions first appeared in Mac OSX 10.12"

[MarDiehl]

It's a recent macOS version (11.7.10), but build with -mmacosx-version-min=10.9. That explains it.

For the conda package, I simply patch away the code for the timing tests