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Fix spidermonkey build rust target detection
Spidermonkey fails to build on newer Rust versions(>= 1.98) on `x86_64-pc-linux-gnu` or `x86_64-unknown-linux-gnu` targets due to target matching ambiguity introduced by new vendor targets. Fix this by backporting the upstream `detect_rustc_target` snapshot into a new patch `FixRustTargetDetection.diff`. Fixes: https://wildfiregames.com/forum/topic/169615-building-libraries-error-dont-know-how-to-translate-x86_64-pc-linux-gnu-for-rustc
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Bowen Ho authored and Ralph Sennhauser committed
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@@ -0,0 +1,103 @@
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From 03a717979ac27c7aed69eb95ae0b89e6287f965d Mon Sep 17 00:00:00 2001
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From: Bowen Ho <bowen951209@gmail.com>
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Date: Sun, 25 Oct 2026 09:25:31 +0800
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Subject: [PATCH] Fix rust target detection
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rustc 1.98 added `*-oe-linux-*` targets, so a host with another vendor, such
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as `aarch64-pld-linux-gnu`, matched both the `unknown` and the `oe` target and
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configure could not pick one.
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Update detect_rustc_target from snapshot
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https://github.com/mozilla-firefox/firefox/commit/2905c758c195388b3d371f1b615b1c5a9c6e1226
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This can be dropped when we update to spidermonkey 140, where the patch
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was backported.
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---
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build/moz.configure/rust.configure | 52 ++++++++++++++++++++++--------
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1 file changed, 39 insertions(+), 13 deletions(-)
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diff --git a/build/moz.configure/rust.configure b/build/moz.configure/rust.configure
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index acac34ec0559..bc62ed1e020f 100644
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--- a/build/moz.configure/rust.configure
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+++ b/build/moz.configure/rust.configure
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@@ -302,19 +302,20 @@ def detect_rustc_target(
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elif not candidates:
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return None
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+ vendor = (
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+ host_or_target.vendor
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+ if any(c.target.vendor == host_or_target.vendor for c in candidates)
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+ else "unknown"
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+ )
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+
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# We have multiple candidates. There are two cases where we can try to
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# narrow further down using extra information from the build system.
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- # - For windows targets, correlate with the C compiler type
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+ # - For windows targets, correlate with the ABI
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if host_or_target.kernel == "WINNT":
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- if host_or_target.abi:
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- if host_or_target.abi == "msvc":
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- suffix = "windows-msvc"
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- elif host_or_target.abi == "mingw":
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- suffix = "windows-gnu"
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- elif compiler_info.type in ("gcc", "clang"):
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- suffix = "windows-gnu"
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- else:
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+ if host_or_target.abi == "msvc":
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suffix = "windows-msvc"
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+ elif host_or_target.abi == "mingw":
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+ suffix = "windows-gnullvm"
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narrowed = [
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c for c in candidates if c.rust_target.endswith("-{}".format(suffix))
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]
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@@ -369,11 +370,19 @@ def detect_rustc_target(
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else:
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suffix = ""
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for p in prefixes:
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- for c in candidates:
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- if c.rust_target.startswith(
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- "{}-".format(p)
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- ) and c.rust_target.endswith(suffix):
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+ matches = [
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+ c
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+ for c in candidates
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+ if c.rust_target.startswith("{}-".format(p))
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+ and c.rust_target.endswith(suffix)
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+ ]
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+ if not matches:
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+ continue
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+ # As below, correlate on the (normalized) vendor.
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+ for c in matches:
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+ if c.target.vendor == vendor:
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return c.rust_target
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+ return matches[0].rust_target
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# See if we can narrow down on the exact alias.
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# We use the sub_configure_alias to keep support mingw32 triplets as input.
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@@ -394,6 +403,23 @@ def detect_rustc_target(
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elif narrowed:
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candidates = narrowed
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+ # The wasm32-wasi target was renamed to wasm32-wasip1
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+ if host_or_target.raw_os == "wasi":
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+ narrowed = [c for c in candidates if c.target.raw_os == "wasip1"]
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+ if len(narrowed) == 1:
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+ return narrowed[0].rust_target
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+ elif narrowed:
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+ candidates = narrowed
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+
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+ # Correlate on the (normalized) vendor, so vendor-specific targets (e.g.
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+ # the *-oe-linux-gnu targets added in rust 1.98) don't shadow the
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+ # generic ones for aliases whose vendor doesn't match a rust target.
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+ narrowed = [c for c in candidates if c.target.vendor == vendor]
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+ if len(narrowed) == 1:
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+ return narrowed[0].rust_target
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+ elif narrowed:
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+ candidates = narrowed
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+
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# See if we can narrow down with the raw OS and raw CPU
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narrowed = [
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c
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--
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2.56.0
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@@ -11,6 +11,11 @@ PATCHES="../patches"
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# https://bugzilla.mozilla.org/show_bug.cgi?id=1588340
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patch -p1 <"${PATCHES}"/FixRustLinkage.diff
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# Fix rustc target detection error on Linux for newer Rust versions (>= 1.98).
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# https://bugzilla.mozilla.org/show_bug.cgi?id=2053518
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# https://bugzilla.mozilla.org/show_bug.cgi?id=2068205
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patch -p1 <"${PATCHES}"/FixRustTargetDetection.diff
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# Differentiate debug/release library names.
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patch -p1 <"${PATCHES}"/FixLibNames.diff
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