Bug 1690937 - Build lucetc with a sysroot. r=firefox-build-system-reviewers,sheehan,mhentges

Differential Revision: https://phabricator.services.mozilla.com/D104131

taskcluster/ci/toolchain/misc.yml

@@ -203,6 +203,8 @@ linux64-lucetc:
         local-toolchain: true
     treeherder:
         symbol: TL(lucetc)
+    worker:
+        docker-image: {in-tree: deb10-toolchain-build}
     run-on-projects: [trunk]
     run:
         script: build-lucetc.sh
@@ -215,6 +217,7 @@ linux64-lucetc:
             - linux64-binutils
             - linux64-clang
             - linux64-rust
+            - linux64-sysroot
 
 linux64-liblowercase:
     description: "liblowercase"

taskcluster/scripts/misc/build-lucetc.sh

@@ -5,7 +5,7 @@ cd $MOZ_FETCHES_DIR/lucet_sandbox_compiler
 
 export PATH=$MOZ_FETCHES_DIR/binutils/bin:$MOZ_FETCHES_DIR/clang/bin:$PATH:$MOZ_FETCHES_DIR/rustc/bin:$MOZ_FETCHES_DIR/cmake/bin
 export CC=$MOZ_FETCHES_DIR/clang/bin/clang
-export CFLAGS="-L$MOZ_FETCHES_DIR/clang/lib"
+export CFLAGS="--sysroot=$MOZ_FETCHES_DIR/sysroot"
 export CXXFLAGS=$CFLAGS
 export CXX=$MOZ_FETCHES_DIR/clang/bin/clang++
 export AR=$MOZ_FETCHES_DIR/clang/bin/llvm-ar