From: Sundeep KOKKONDA <sundeep.kokkonda@windriver.com>
Date: Wed, 20 Dec 2023 10:40:20 +0000 (-0800)
Subject: rust: rustdoc reproducibility issue fix - disable PGO
X-Git-Tag: uninative-4.4~681
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=189c266378c8c4a918cb205b3888577c7ce76856;p=thirdparty%2Fopenembedded%2Fopenembedded-core.git

rust: rustdoc reproducibility issue fix - disable PGO

The PGO (Profile-guided Optimization) collect data about the typical execution of a program
and then use this data to inform optimizations such as inlining, machine-code layout,
register allocation, etc.

This optimization is by default disabled in rust sources but enabled in Yocto and causing
the reproducibility issue in rustdoc binary. To fix the issue this optimization is set to
it's default 'false'.

More about the optimization: https://doc.rust-lang.org/rustc/profile-guided-optimization.html

With the reproducibility issue fixed, we can enable the reproducibility tests again.

Signed-off-by: Sundeep KOKKONDA <sundeep.kokkonda@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---

diff --git a/meta/lib/oeqa/selftest/cases/reproducible.py b/meta/lib/oeqa/selftest/cases/reproducible.py
index 14ccb0b24d5..80e830136f7 100644
--- a/meta/lib/oeqa/selftest/cases/reproducible.py
+++ b/meta/lib/oeqa/selftest/cases/reproducible.py
@@ -16,8 +16,6 @@ import os
 import datetime
 
 exclude_packages = [
-	'rust-rustdoc',
-	'rust-dbg'
 	]
 
 def is_excluded(package):
diff --git a/meta/recipes-devtools/rust/rust_1.71.1.bb b/meta/recipes-devtools/rust/rust_1.71.1.bb
index 3d176e54c15..bc076997dec 100644
--- a/meta/recipes-devtools/rust/rust_1.71.1.bb
+++ b/meta/recipes-devtools/rust/rust_1.71.1.bb
@@ -141,13 +141,14 @@ python do_configure() {
     config.add_section("build")
     config.set("build", "submodules", e(False))
     config.set("build", "docs", e(False))
+    config.set("build", "tools", ["rust-demangler",])
 
     rustc = d.expand("${WORKDIR}/rust-snapshot/bin/rustc")
     config.set("build", "rustc", e(rustc))
 
     # Support for the profiler runtime to generate e.g. coverage report,
     # PGO etc.
-    config.set("build", "profiler", e(True))
+    config.set("build", "profiler", e(False))
 
     cargo = d.expand("${WORKDIR}/rust-snapshot/bin/cargo")
     config.set("build", "cargo", e(cargo))