Bug 1721864 - Add msix-packaging toolchain build. r=bhearsum,firefox-build-system-reviewers,glandium

Differential Revision: https://phabricator.services.mozilla.com/D119669

taskcluster/ci/fetch/toolchains.yml

@@ -684,3 +684,10 @@ gnumake:
         artifact-name: make.tar.zst
         strip-components: 1
         add-prefix: make/
+
+msix-packaging:
+    description: Microsoft msix-packaging
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/msix-packaging
+        revision: 8164b7ac5a67688e18fa2497fb31ba13ce9bfb15

taskcluster/ci/toolchain/misc.yml

@@ -134,6 +134,21 @@ linux64-upx:
         script: build-upx.sh
         toolchain-artifact: public/build/upx.tar.xz
 
+linux64-msix-packaging:
+    description: "msix-packaging build"
+    treeherder:
+        symbol: TL(msix-packaging)
+        tier: 1
+    run:
+        script: build-msix-packaging.sh
+        toolchain-artifact: public/build/msix-packaging.tar.zst
+    fetches:
+        fetch:
+            - msix-packaging
+        toolchain:
+            - linux64-clang
+            - linux64-toolchain-sysroot
+
 linux64-custom-v8:
     description: "Custom v8 build"
     treeherder:

taskcluster/ci/toolchain/sysroot.yml

@@ -78,3 +78,5 @@ linux64-toolchain-sysroot:
             - libcurl4-openssl-dev
             - libssl-dev
             - libbz2-dev
+            # For msix-package
+            - libicu-dev

taskcluster/scripts/misc/build-msix-packaging.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+set -x -e -v
+
+cd $MOZ_FETCHES_DIR/msix-packaging
+
+export PATH=$MOZ_FETCHES_DIR/clang/bin:$PATH
+
+# makelinux.sh invokes `make` with no parallelism.  These jobs run on hosts with
+# 16+ vCPUs; let's try to take advantage.
+export MAKEFLAGS=-j16
+
+./makelinux.sh --pack -- \
+      -DCMAKE_SYSROOT=$MOZ_FETCHES_DIR/sysroot \
+      -DCMAKE_EXE_LINKER_FLAGS_INIT='-fuse-ld=lld -Wl,-rpath=\$ORIGIN' \
+      -DCMAKE_SHARED_LINKER_FLAGS_INIT='-fuse-ld=lld -Wl,-rpath=\$ORIGIN' \
+      -DCMAKE_SKIP_BUILD_RPATH=TRUE
+
+mkdir msix-packaging
+cp .vs/bin/makemsix msix-packaging
+cp .vs/lib/libmsix.so msix-packaging
+
+# The `msix-packaging` tool links against libicu dynamically.  It would be
+# better to link statically, but it's not easy to achieve.  This copies the
+# needed libicu libraries from the sysroot, and the rpath settings above allows
+# them to be loaded, which means the consuming environment doesn't need to
+# install libicu directly.
+LD_LIBRARY_PATH=$MOZ_FETCHES_DIR/sysroot/usr/lib/x86_64-linux-gnu \
+ldd msix-packaging/libmsix.so | awk '$3 ~ /libicu/ {print $3}' | xargs -I '{}' cp '{}' msix-packaging
+
+tar caf msix-packaging.tar.zst msix-packaging
+
+mkdir -p $UPLOAD_DIR
+cp msix-packaging.tar.zst $UPLOAD_DIR