[linux][apps][arm64] Add arm64 linux with vcpkg

[talregev]

Add arm64 linux with vcpkg

Fix #4782

[AenBleidd]

No, you are wrong, and you can check the artifacts, they are actually for the ARM64:

[talregev]

I verify the headers of the files from artifacts. I also got the Machine aarch64.
But there is a still mismatch: it choose g++ instead of aarch64-linux-gnu-g++
https://github.com/BOINC/boinc/actions/runs/16253724876/job/45886907346#step:28:3445

Also when I try long time ago to combine the libs from vcpkg to build with the script, I found they don't compatible.

But let's assume these files compile in aarch64 correctly, this PR compile more apps in aarch64, improving the current scripts.

[AenBleidd]

It is ok to add libs-vcpkg-arm64 and apps-vcpkg-arm64 but these must not replace existing libs-arm64 and apps-arm64

[Copilot]

Pull Request Overview

This PR adds support for building and packaging Linux ARM64 targets using vcpkg. Key changes include:

• Refactoring sample Makefiles to use $(CXX) for locating libstdc++.a
• Introducing ARM64-specific vcpkg scripts and CI configuration under linux/arm64/
• Extending deployment and GitHub Actions workflows to include libs-vcpkg-arm64 and apps-vcpkg-arm64 matrix entries

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
samples/openclapp/Makefile*	Switched to $(CXX) -print-file-name for cross-compilation
linux/arm64/update_vcpkg_*.sh	Added scripts to clone, bootstrap, and install vcpkg libs/apps for arm64
linux/arm64/ci_configure_*.sh	Added CI configure scripts for libs/apps on ARM64
deploy/prepare_deployment.py	Added prepare_linux_apps_vcpkg_arm64 function to include ARM64 apps-vcpkg archive
.github/workflows/linux.yml	Expanded matrix types and added ARM64 vcpkg install/build steps

Comments suppressed due to low confidence (3)

.github/workflows/linux.yml:73

• [nitpick] The here-document is indented, which will introduce leading spaces in the generated sources list file. Consider using an unindented EOF or <<-EOT to trim indentation for cleaner formatting.

          cat <<EOT >> arm-cross-compile-sources.list

linux/arm64/update_vcpkg_libs.sh:5

• [nitpick] The error message could be more helpful by including the script name, e.g., echo "[update_vcpkg_libs.sh] Please run this from the project root".

    echo "start this script in the source root directory"

deploy/prepare_deployment.py:326

• The new prepare_linux_apps_vcpkg_arm64 function isn't covered by existing tests. Consider adding a unit test to verify it produces the expected 7z archive entry.

def prepare_linux_apps_vcpkg_arm64(target_directory):

[Copilot]

Wrap the variable in quotes to prevent word splitting or globbing if the path contains spaces: if [ ! -d "$VCPKG_ROOT" ]; then.

Suggested change

	if [ ! -d $VCPKG_ROOT ]; then
	mkdir -p $BUILD_DIR
	git -C $BUILD_DIR clone $VCPKG_LINK
	fi
	git -C $VCPKG_ROOT pull
	$VCPKG_ROOT/bootstrap-vcpkg.sh
	$VCPKG_ROOT/vcpkg install --x-manifest-root=3rdParty/vcpkg_ports/configs/libs/ --x-install-root=$VCPKG_ROOT/installed/ --overlay-ports=$VCPKG_PORTS/ports --overlay-triplets=$VCPKG_PORTS/triplets/ci --triplet=arm64-linux-release --clean-after-build
	if [ ! -d "$VCPKG_ROOT" ]; then
	mkdir -p "$BUILD_DIR"
	git -C "$BUILD_DIR" clone "$VCPKG_LINK"
	fi
	git -C "$VCPKG_ROOT" pull
	"$VCPKG_ROOT/bootstrap-vcpkg.sh"
	"$VCPKG_ROOT/vcpkg" install --x-manifest-root=3rdParty/vcpkg_ports/configs/libs/ --x-install-root="$VCPKG_ROOT/installed/" --overlay-ports="$VCPKG_PORTS/ports" --overlay-triplets="$VCPKG_PORTS/triplets/ci" --triplet=arm64-linux-release --clean-after-build

[Copilot]

Similarly, quote the path variable here to handle spaces safely: if [ ! -d "$VCPKG_ROOT" ]; then.

Suggested change

	if [ ! -d $VCPKG_ROOT ]; then
	if [ ! -d "$VCPKG_ROOT" ]; then

[AenBleidd]

Thank you for the PR.