Auto merge of #69894 - vtbassmatt:master, r=nellshamrell

establish immutable source for RUST_CONFIGURE_ARGS

fixes https://github.com/rust-lang/rust/issues/68671

3 files changed, 36 insertions, 23 deletions

diff --git a/src/ci/azure-pipelines/auto.yml b/src/ci/azure-pipelines/auto.yml
index 74b7469ea27..13db4725ded 100644
--- a/src/ci/azure-pipelines/auto.yml
+++ b/src/ci/azure-pipelines/auto.yml
@@ -76,7 +76,7 @@ jobs:
       # version that we're using, 8.2, cannot compile LLVM for OSX 10.7.
       x86_64-apple:
         SCRIPT: ./x.py test
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
         RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
         MACOSX_DEPLOYMENT_TARGET: 10.8
         MACOSX_STD_DEPLOYMENT_TARGET: 10.7
@@ -85,7 +85,7 @@ jobs:
 
       dist-x86_64-apple:
         SCRIPT: ./x.py dist
-        RUST_CONFIGURE_ARGS: --target=aarch64-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc
+        INITIAL_RUST_CONFIGURE_ARGS: --target=aarch64-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc
         RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
         MACOSX_DEPLOYMENT_TARGET: 10.7
         NO_LLVM_ASSERTIONS: 1
@@ -94,7 +94,7 @@ jobs:
 
       dist-x86_64-apple-alt:
         SCRIPT: ./x.py dist
-        RUST_CONFIGURE_ARGS: --enable-extended --enable-profiler --set rust.jemalloc
+        INITIAL_RUST_CONFIGURE_ARGS: --enable-extended --enable-profiler --set rust.jemalloc
         RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
         MACOSX_DEPLOYMENT_TARGET: 10.7
         NO_LLVM_ASSERTIONS: 1
@@ -111,22 +111,22 @@ jobs:
     matrix:
       # 32/64 bit MSVC tests
       x86_64-msvc-1:
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
         SCRIPT: make ci-subset-1
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1
         NO_LLVM_ASSERTIONS: 1
       x86_64-msvc-2:
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
         SCRIPT: make ci-subset-2
       i686-msvc-1:
-        RUST_CONFIGURE_ARGS: --build=i686-pc-windows-msvc
+        INITIAL_RUST_CONFIGURE_ARGS: --build=i686-pc-windows-msvc
         SCRIPT: make ci-subset-1
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1
         NO_LLVM_ASSERTIONS: 1
       i686-msvc-2:
-        RUST_CONFIGURE_ARGS: --build=i686-pc-windows-msvc
+        INITIAL_RUST_CONFIGURE_ARGS: --build=i686-pc-windows-msvc
         SCRIPT: make ci-subset-2
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1
@@ -134,10 +134,10 @@ jobs:
       # MSVC aux tests
       x86_64-msvc-aux:
         RUST_CHECK_TARGET: check-aux EXCLUDE_CARGO=1
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
       x86_64-msvc-cargo:
         SCRIPT: python x.py test src/tools/cargotest src/tools/cargo
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
         VCVARS_BAT: vcvars64.bat
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1
@@ -145,7 +145,7 @@ jobs:
       # MSVC tools tests
       x86_64-msvc-tools:
         SCRIPT: src/ci/docker/x86_64-gnu-tools/checktools.sh x.py
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --save-toolstates=/tmp/toolstate/toolstates.json
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --save-toolstates=/tmp/toolstate/toolstates.json
 
       # 32/64-bit MinGW builds.
       #
@@ -161,31 +161,31 @@ jobs:
       # came from the mingw-w64 SourceForge download site. Unfortunately
       # SourceForge is notoriously flaky, so we mirror it on our own infrastructure.
       i686-mingw-1:
-        RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
+        INITIAL_RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
         SCRIPT: make ci-mingw-subset-1
         CUSTOM_MINGW: 1
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1
         NO_LLVM_ASSERTIONS: 1
       i686-mingw-2:
-        RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
+        INITIAL_RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
         SCRIPT: make ci-mingw-subset-2
         CUSTOM_MINGW: 1
       x86_64-mingw-1:
         SCRIPT: make ci-mingw-subset-1
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu
         CUSTOM_MINGW: 1
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1
         NO_LLVM_ASSERTIONS: 1
       x86_64-mingw-2:
         SCRIPT: make ci-mingw-subset-2
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu
         CUSTOM_MINGW: 1
 
       # 32/64 bit MSVC and GNU deployment
       dist-x86_64-msvc:
-        RUST_CONFIGURE_ARGS: >-
+        INITIAL_RUST_CONFIGURE_ARGS: >-
           --build=x86_64-pc-windows-msvc
           --target=x86_64-pc-windows-msvc,aarch64-pc-windows-msvc
           --enable-full-tools
@@ -193,7 +193,7 @@ jobs:
         SCRIPT: python x.py dist
         DIST_REQUIRE_ALL_TOOLS: 1
       dist-i686-msvc:
-        RUST_CONFIGURE_ARGS: >-
+        INITIAL_RUST_CONFIGURE_ARGS: >-
           --build=i686-pc-windows-msvc
           --target=i586-pc-windows-msvc
           --enable-full-tools
@@ -201,17 +201,17 @@ jobs:
         SCRIPT: python x.py dist
         DIST_REQUIRE_ALL_TOOLS: 1
       dist-i686-mingw:
-        RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu --enable-full-tools --enable-profiler
+        INITIAL_RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu --enable-full-tools --enable-profiler
         SCRIPT: python x.py dist
         CUSTOM_MINGW: 1
         DIST_REQUIRE_ALL_TOOLS: 1
       dist-x86_64-mingw:
         SCRIPT: python x.py dist
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-full-tools --enable-profiler
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-full-tools --enable-profiler
         CUSTOM_MINGW: 1
         DIST_REQUIRE_ALL_TOOLS: 1
 
       # "alternate" deployment, see .travis.yml for more info
       dist-x86_64-msvc-alt:
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-extended --enable-profiler
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-extended --enable-profiler
         SCRIPT: python x.py dist
diff --git a/src/ci/azure-pipelines/try.yml b/src/ci/azure-pipelines/try.yml
index a29d6f9ae1e..698608795e2 100644
--- a/src/ci/azure-pipelines/try.yml
+++ b/src/ci/azure-pipelines/try.yml
@@ -32,7 +32,7 @@ jobs:
 #     matrix:
 #       dist-x86_64-apple:
 #         SCRIPT: ./x.py dist
-#         RUST_CONFIGURE_ARGS: --target=aarch64-apple-ios,armv7-apple-ios,armv7s-apple-ios,i386-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc
+#         INITIAL_RUST_CONFIGURE_ARGS: --target=aarch64-apple-ios,armv7-apple-ios,armv7s-apple-ios,i386-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc
 #         DEPLOY: 1
 #         RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
 #         MACOSX_DEPLOYMENT_TARGET: 10.7
@@ -42,7 +42,7 @@ jobs:
 #
 #       dist-x86_64-apple-alt:
 #         SCRIPT: ./x.py dist
-#         RUST_CONFIGURE_ARGS: --enable-extended --enable-profiler --set rust.jemalloc
+#         INITIAL_RUST_CONFIGURE_ARGS: --enable-extended --enable-profiler --set rust.jemalloc
 #         DEPLOY_ALT: 1
 #         RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
 #         MACOSX_DEPLOYMENT_TARGET: 10.7
@@ -58,7 +58,7 @@ jobs:
 #   strategy:
 #     matrix:
 #       dist-x86_64-msvc:
-#         RUST_CONFIGURE_ARGS: >
+#         INITIAL_RUST_CONFIGURE_ARGS: >
 #           --build=x86_64-pc-windows-msvc
 #           --target=x86_64-pc-windows-msvc,aarch64-pc-windows-msvc
 #           --enable-full-tools
@@ -68,6 +68,6 @@ jobs:
 #         DEPLOY: 1
 #
 #       dist-x86_64-msvc-alt:
-#         RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-extended --enable-profiler
+#         INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-extended --enable-profiler
 #         SCRIPT: python x.py dist
 #         DEPLOY_ALT: 1
diff --git a/src/ci/scripts/setup-environment.sh b/src/ci/scripts/setup-environment.sh
index e126a06edab..d134fcd47ba 100755
--- a/src/ci/scripts/setup-environment.sh
+++ b/src/ci/scripts/setup-environment.sh
@@ -8,6 +8,19 @@ IFS=$'\n\t'
 
 source "$(cd "$(dirname "$0")" && pwd)/../shared.sh"
 
+# Since matrix variables are readonly in Azure Pipelines, we take
+# INITIAL_RUST_CONFIGURE_ARGS and establish RUST_CONFIGURE_ARGS
+# which downstream steps can alter
+# macOS ships with Bash 3.16, so we cannot use [[ -v FOO ]],
+# which was introduced in Bash 4.2
+if [[ -z "${INITIAL_RUST_CONFIGURE_ARGS+x}" ]]; then
+    INITIAL_RUST_CONFIG=""
+    echo "No initial Rust configure args set"
+else
+    INITIAL_RUST_CONFIG="${INITIAL_RUST_CONFIGURE_ARGS}"
+    ciCommandSetEnv RUST_CONFIGURE_ARGS "${INITIAL_RUST_CONFIG}"
+fi
+
 # Builders starting with `dist-` are dist builders, but if they also end with
 # `-alt` they are alternate dist builders.
 if [[ "${CI_JOB_NAME}" = dist-* ]]; then