fanquake
commented at 4:43 pm on August 28, 2024:
member
Currently, builds of libevent in depends, using CMake, fail on some systems, like Alpine, with the following:
0/bitcoin/depends/work/build/aarch64-unknown-linux-musl/libevent/2.1.12-stable-1516ed47ea8/evmap.c: In function'evmap_signal_add_':
1/bitcoin/depends/work/build/aarch64-unknown-linux-musl/libevent/2.1.12-stable-1516ed47ea8/evmap.c:456:31: error: 'NSIG' undeclared (first use in this function)2456 | if(sig < 0|| sig >= NSIG)
From what I can tell the GNU_SOURCE “detection” in libevents CMake build system, never? really worked, primarily relies on looking for a deprecated define, and it’s not clear what a nice fix is. For now, always build with _GNU_SOURCE, to match the autotools behaviour.
fanquake added the label
Needs backport (28.x)
on Aug 28, 2024
fanquake added this to the milestone 28.0
on Aug 28, 2024
DrahtBot
commented at 4:43 pm on August 28, 2024:
contributor
The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.
DrahtBot removed the label
DrahtBot Guix build requested
on Aug 29, 2024
depends: build libevent with -D_GNU_SOURCE
Currently, builds of libevent in depends, using CMake, fail on some
systems, like Alpine, with the following:
```bash
/bitcoin/depends/work/build/aarch64-unknown-linux-musl/libevent/2.1.12-stable-1516ed47ea8/evmap.c: In function 'evmap_signal_add_':
/bitcoin/depends/work/build/aarch64-unknown-linux-musl/libevent/2.1.12-stable-1516ed47ea8/evmap.c:456:31: error: 'NSIG' undeclared (first use in this function)
456 | if (sig < 0 || sig >= NSIG)
```
From what I can tell the `_GNU_SOURCE` "detection" in libevents CMake build
system, never? really worked, and it's not clear what a nice fix is.
For now, always use `_GNU_SOURCE` when building libevent in depends.
5567754087
fanquake force-pushed
on Sep 3, 2024
fanquake marked this as ready for review
on Sep 3, 2024
fanquake
commented at 9:20 am on September 3, 2024:
member
For now I’ve opted with matching the prior Autotools behaviour, and always building with -D_GNU_SOURCE, which is also easy to backport to 28.x.
fanquake added the label
DrahtBot Guix build requested
on Sep 3, 2024
fanquake
commented at 10:39 am on September 3, 2024:
member
0@@ -832,15 +832,15 @@
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1213 F8CD6B CENTRAL HEADER [#4](/bitcoin-bitcoin/4/) 02014B50
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Note that this shouldn’t be related to the change here, so if you’re happy with this change, I’d like to try move forward with it, so we can backport it to 28.x. I’ll open a new issue to track the macOS zipping non-determinism we seem to be seeing, if we don’t have it fixed before that.
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