rust: rustdoc reproducibility issue fix

The 'codegen-units' option split the crate into multiple compilation units for parallel compilation. Currently, this split is causing the rustdoc to generate differnt binary between the builds.
To fix this the codegen-units & the lto options are disabled.

More info about options:
https://doc.rust-lang.org/cargo/reference/profiles.html#codegen-units
https://doc.rust-lang.org/rustc/codegen-options/index.html#lto

(From OE-Core rev: 0c00875de10b171f4ff2990af351a8124ec7e972)

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

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):

meta/recipes-devtools/rust/files/rustdoc-repro-issue-fix-cargo-config-for-codegenunits.patch

@@ -0,0 +1,26 @@
+rust: rustdoc reproducibility issue fix
+
+rust: rustdoc reproducibility issue fix
+
+The 'codegen-units' option split the crate into multiple compilation units for parallel compilation. Currently, this split is causing the rustdoc to generate differnt binary between the builds.
+To fix this the codegen-units & the lto options are disabled.
+
+More info about options:
+https://doc.rust-lang.org/cargo/reference/profiles.html#codegen-units
+https://doc.rust-lang.org/rustc/codegen-options/index.html#lto
+
+Upstream-Status: Inappropriate [oe specific]
+
+Signed-off-by: Sundeep KOKKONDA <sundeep.kokkonda@windriver.com>
+---
+--- a/.cargo/config.toml
++++ b/.cargo/config.toml
+@@ -3,3 +3,7 @@
+
+ [source.vendored-sources]
+ directory = "vendor"
++
++[profile.release]
++codegen-units = 1
++
+

meta/recipes-devtools/rust/rust-source.inc

@@ -13,6 +13,7 @@ SRC_URI += "https://static.rust-lang.org/dist/rustc-${RUST_VERSION}-src.tar.xz;n
             file://0001-Handle-vendored-sources-when-remapping-paths.patch;patchdir=${RUSTSRC} \
             file://repro-issue-fix-with-v175.patch;patchdir=${RUSTSRC} \
             file://0001-cargo-do-not-write-host-information-into-compilation.patch;patchdir=${RUSTSRC} \
+            file://rustdoc-repro-issue-fix-cargo-config-for-codegenunits.patch;patchdir=${RUSTSRC} \
 "
 SRC_URI[rust.sha256sum] = "4526f786d673e4859ff2afa0bab2ba13c918b796519a25c1acce06dba9542340"
 

meta/recipes-devtools/rust/rust_1.75.0.bb

@@ -136,6 +136,7 @@ python do_configure() {
     config.add_section("rust")
     config.set("rust", "rpath", e(True))
     config.set("rust", "remap-debuginfo", e(True))
+    config.set("rust", "lto", "\"off\"")
     config.set("rust", "channel", e(d.expand("${RUST_CHANNEL}")))
 
     # Whether or not to optimize the compiler and standard library