Files
jak-project/third-party/curl/lib/peer.h
T
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

111 lines
4.5 KiB
C
Vendored
Generated

#ifndef HEADER_CURL_PEER_H
#define HEADER_CURL_PEER_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
struct Curl_scheme;
struct urlpieces;
/* if peer hostname starts with this, the peer is a unix domain socket
* path, e.g. the remainder after 'localhost'. */
#define CURL_PEER_UDS_PREFIX "localhost/"
struct Curl_peer {
const struct Curl_scheme *scheme; /* url scheme */
char *hostname; /* normalized hostname (IDN decoded when supported) */
char *zoneid; /* NULL or ipv6 zone identifier */
uint32_t refcount; /* created with 1, freed when dropping to 0 */
uint32_t scopeid; /* != 0, ipv6 scope to use */
uint16_t port;
BIT(unix_socket); /* hostname is a UDS path without the prefix */
BIT(abstract_uds); /* only TRUE when `unix_socket` also TRUE */
BIT(ipv6); /* hostname is an IPv6 address stripped of '[]' */
char user_hostname[1]; /* hostname supplied by user/url */
};
/* Create a new peer:
* - `peer->user_hostname` is the passed `hostname`
* - `peer->hostname` is the normalized `hostname` via
* + IDN conversion if it has non-ASCII characters
* + stripping of surrounding '[]' for URL formatted ipv6 addresses
* + the path alone in case of a unix domain socket, e.g. hostname
* starts with CURL_PEER_UDS_PREFIX and is longer
* Scans for IPv6 addresses even without surrounding '[]'.
* - `zoneid` ipv6 zone identifier or NULL
* - `scopeid` ipv6 scopeid of zoneid, when known.
*/
CURLcode Curl_peer_create(struct Curl_easy *data,
const struct Curl_scheme *scheme,
const char *hostname,
uint16_t port,
struct Curl_peer **ppeer);
#ifdef USE_UNIX_SOCKETS
CURLcode Curl_peer_uds_create(const struct Curl_scheme *scheme,
const char *path,
bool abstract_unix_socket,
struct Curl_peer **ppeer);
#endif
/* Unlink any peer in `*pdest`, assign src, increase src
* refcount when not NULL. */
void Curl_peer_link(struct Curl_peer **pdest, struct Curl_peer *src);
/* Drop a reference, peer may be passed as NULL */
void Curl_peer_unlink(struct Curl_peer **ppeer);
/* TRUE if both peers are NULL or have completely same properties. */
bool Curl_peer_equal(struct Curl_peer *p1, struct Curl_peer *p2);
/* TRUE if both peers are NULL or have same properties except the scheme. */
bool Curl_peer_same_destination(struct Curl_peer *p1, struct Curl_peer *p2);
CURLcode Curl_peer_from_url(CURLU *uh, struct Curl_easy *data,
uint16_t port_override,
uint32_t scopeid_override,
struct urlpieces *up,
struct Curl_peer **ppeer);
CURLcode Curl_peer_from_connect_to(struct Curl_easy *data,
const struct Curl_peer *dest,
const char *connect_to,
struct Curl_peer **ppeer);
#ifndef CURL_DISABLE_PROXY
CURLcode Curl_scheme_to_proxytype(struct Curl_easy *data,
const char *scheme,
uint8_t *proxytype,
const char *url);
CURLcode Curl_peer_from_proxy_url(CURLU *uh,
struct Curl_easy *data,
const char *url,
uint8_t proxytype,
struct Curl_peer **ppeer,
uint8_t *pproxytype);
#endif /* !CURL_DISABLE_PROXY */
#endif /* HEADER_CURL_PEER_H */