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Alexander J. Semenuk 5d5e35fb9b fix: Windows toolchain compatibility (curl 8.21 re-vendor, endless reconfigure loop) (#4355)
## Problem

Windows builds break with a current local toolchain (Scoop LLVM 22.1.8,
CMake 4.4.0, VS 2026), in two independent ways:

1. The build stops at curl's deliberate guard: `#error "no non-blocking
method was found/used/set"` in `third-party/curl/lib/nonblock.c`.
2. From the second configure onward, `cmake --build` re-runs CMake in an
endless loop (observed 42 consecutive reconfigure cycles in a single
build). Likely the same mechanism behind the "endlessly building" VS
2026 note in `docs/setup/dev/vs.md`.

## Root cause

1. `third-party/curl/CMake/CurlTests.c` passes `int *` to
`ioctlsocket()`, whose third parameter is `u_long *`. Clang 22 promotes
`-Wincompatible-pointer-types` to a hard error in C, so the
`HAVE_IOCTLSOCKET_FIONBIO` try_compile silently fails and
`curl_config.h` never defines it. Upstream CI does not see this because
the windows-2022 runner image ships an older LLVM. GCC 14 promotes the
same warning to a hard error, which is very likely the `CurlTests.c.obj`
failure reported from MSYS2 in open-goal/jak-project#3551. Upstream curl
hit the identical problem with GCC 14 and fixed the probe in curl 8.8.0
(curl/curl#13578).
2. The root CMakeLists copies the build tree's `compile_commands.json`
into `<src>/build/` for clangd using `configure_file()`, which registers
its input as a configure dependency. CMake rewrites
`compile_commands.json` late in every generation, after
`CTestTestfile.cmake` and `cmake_install.cmake` (outputs of the same
Ninja regen rule), so once the dependency is registered the rule is
deterministically dirty and every `ninja` invocation re-runs CMake. A
pristine first configure is safe (the file does not exist yet, so the
`if(EXISTS ...)` guard skips the copy), which is why the loop looks
machine- or IDE-specific.

## Fix

1. Per review, re-vendor `third-party/curl` at the `curl-8_21_0` tag
(previously `curl-8_3_0`), which carries the upstream probe fix plus two
years of upstream development; `vendor.yaml` updated to match.
Adjustments the version jump forced:
- curl 8.15 removed the native macOS Secure Transport backend
(`CURL_USE_SECTRANSP`), so macOS now builds curl against OpenSSL like
Linux. The two macOS workflows install Homebrew `openssl@3` and export
`OPENSSL_ROOT_DIR` (keg-only), and the macOS setup docs gained the same
two lines.
- `CURL_BROTLI` / `CURL_ZSTD` switched to AUTO-detection in curl 8.10;
pinned OFF to keep the previous no-compression behavior and avoid
silently linking whatever the CI images happen to have.
- curl's new top-level `BUILD_EXAMPLES` cache option (default ON) leaked
into discord-rpc's identically named option and broke configure at a
nonexistent `examples/send-presence` directory; pinned OFF ahead of the
third-party subdirectories.

The diff is dominated by the mechanical tag-tree swap under
`third-party/curl` (linguist-vendored, collapsed in review). The
hand-written changes are `CMakeLists.txt`, the two macOS workflows,
`docs/setup/system/macos.md`, and `vendor.yaml`.
2. Swap `configure_file()` for `file(COPY ...)`: the same clangd copy
with no configure dependency registered. (`file(COPY_FILE ...
ONLY_IF_DIFFERENT)` would be cleaner still but requires CMake 3.21,
above the declared `cmake_minimum_required(VERSION 3.10)`.)

## Test plan

- [x] Fresh `cmake --preset Release-windows-clang` (LLVM 22, no cache
seeding) completes and logs `Enabled SSL backends: Schannel`; the
FIONBIO probe passes without the previous `#error`
- [x] Full Windows Release build from scratch in the branch worktree
(all 1422 targets)
- [x] goalc-test suite: 1509 passed, 0 failed
- [x] Second consecutive configure with `compile_commands.json` present:
the regen rule in `build.ninja` has no `compile_commands.json` input;
`<src>/build/compile_commands.json` is still refreshed for clangd
- [x] Repeated `ninja` invocations after a full build no longer re-run
CMake
- [x] macOS Intel and ARM CI green (first exercise of the OpenSSL
backend switch)

---

I work off a self-hosted forge, so this GitHub account is quiet; the
configure logs and ninja dirty-node traces from the investigation are
available if anyone wants the raw data.

(AI-assisted)
2026-07-27 19:19:18 -04:00

131 lines
4.1 KiB
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Vendored
Generated

$! File: Backup_gnv_curl_src.com
$!
$! Procedure to create backup save sets for installing in a PCSI kit.
$!
$! To comply with most Open Source licenses, the source used for building
$! a kit will be packaged with the distribution kit for the binary.
$!
$! Backup save sets are the only storage format that I can expect a
$! VMS system to be able to extract ODS-5 filenames and directories.
$!
$! The make_pcsi_kit_name.com needs to be run before this procedure to
$! properly name the files that will be created.
$!
$! This file is created from a template file for the purpose of making it
$! easier to port Unix code, particularly open source code to VMS.
$! Therefore permission is freely granted for any use.
$!
$! Copyright (C) John Malmberg
$!
$! Permission to use, copy, modify, and/or distribute this software for any
$! purpose with or without fee is hereby granted, provided that the above
$! copyright notice and this permission notice appear in all copies.
$!
$! THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
$! WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
$! MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
$! ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
$! WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
$! ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
$! OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
$!
$! SPDX-License-Identifier: ISC
$!
$!===========================================================================
$!
$! Save default
$ default_dir = f$environment("DEFAULT")
$!
$ arch_type = f$getsyi("ARCH_NAME")
$ arch_code = f$extract(0, 1, arch_type)
$!
$ if arch_code .nes. "V"
$ then
$ set proc/parse=extended
$ endif
$!
$ ss_abort = 44
$ status = ss_abort
$!
$ kit_name = f$trnlnm("GNV_PCSI_KITNAME")
$ if kit_name .eqs. ""
$ then
$ write sys$output "@MAKE_PCSI_CURL_KIT_NAME.COM has not been run."
$ goto all_exit
$ endif
$ producer = f$trnlnm("GNV_PCSI_PRODUCER")
$ if producer .eqs. ""
$ then
$ write sys$output "@MAKE_PCSI_CURL_KIT_NAME.COM has not been run."
$ goto all_exit
$ endif
$ filename_base = f$trnlnm("GNV_PCSI_FILENAME_BASE")
$ if filename_base .eqs. ""
$ then
$ write sys$output "@MAKE_PCSI_CURL_KIT_NAME.COM has not been run."
$ goto all_exit
$ endif
$!
$ node_swvers = f$getsyi("NODE_SWVERS")
$ node_swvers_type = f$extract(0, 1, node_swvers)
$ node_swvers_vers = f$extract(1, f$length(node_swvers), node_swvers)
$ swvers_maj = f$element(0, ".", node_swvers_vers)
$ node_swvers_min_update = f$element(1, ".", node_swvers_vers)
$ swvers_min = f$element(0, "-", node_swvers_min_update)
$ swvers_update = f$element(1, "-", node_swvers_min_update)
$!
$ if swvers_update .eqs. "-" then swvers_update = ""
$!
$ vms_vers = f$fao("!2ZB!2ZB!AS", 'swvers_maj', 'swvers_min', swvers_update)
$!
$!
$!
$! If available make an interchange save set
$!-------------------------------------------
$ interchange = ""
$ if arch_code .eqs. "V"
$ then
$ interchange = "/interchange"
$ endif
$ if (swvers_maj .ges. "8") .and. (swvers_min .ges. 4)
$ then
$ interchange = "/interchange/noconvert"
$ endif
$!
$!
$! Move to the base directories
$ set def [--]
$!
$! Put things back on error.
$ on warning then goto all_exit
$!
$ current_default = f$environment("DEFAULT")
$ my_dir = f$parse(current_default,,,"DIRECTORY") - "[" - "<" - ">" - "]"
$!
$ src_root = "src_root:"
$ if f$trnlnm("src_root1") .nes. "" then src_root = "src_root1:"
$ backup'interchange' 'src_root'[curl...]*.*;0 -
'filename_base'_original_src.bck/sav
$ status = $status
$!
$! There may be a VMS specific source kit
$!-----------------------------------------
$ vms_root = "vms_root:"
$ if f$trnlnm("vms_root1") .nes. "" then vms_root = "vms_root1:"
$ files_found = 0
$ define/user sys$error nl:
$ define/user sys$output nl:
$ directory 'vms_root'[...]*.*;*/exc=*.dir
$ if '$severity' .eq. 1 then files_found = 1
$!
$ if files_found .eq. 1
$ then
$ backup'interchange' 'vms_root'[curl...]*.*;0 -
'filename_base'_vms_src.bck/sav
$ status = $status
$ endif
$!
$all_exit:
$ set def 'default_dir'
$ exit