Provisioning: Exit when an emscripten install command fails

If there is an error in emsdk scripts when running ".\emsdk install",
the provisioning would still continue. This change will make the script
exit and stop provisioning when the install command fails.

Also remove the attempt to use Python 2 and make sure the installation
finds Python 3 instead.

Pick-to: 6.8 6.5
Task-number: QTQAINFRA-5453
Change-Id: If052adcd446537b0eeb6261e4a297e9aeb292c6e
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@qt.io>
(cherry picked from commit 879c8b91f3)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

coin/provisioning/common/unix/emsdk.sh

@@ -11,7 +11,7 @@ source "${BASH_SOURCE%/*}/DownloadURL.sh"
 version="3.1.56"
 versionNode="v16.20.0"
 tarBallVersion="${version//./_}"
-if uname -a |grep -q Darwin; then
+if uname -a | grep -q Darwin; then
     tarBallPackage="emsdk_macos_${tarBallVersion}.tar.gz"
     sha="24c49db971da4fd7c68f6b71984c3d7775fdfb84"
 else
@@ -22,7 +22,7 @@ cacheUrl="https://ci-files01-hki.ci.qt.io/input/emsdk/${tarBallPackage}"
 target="/tmp/${tarBallPackage}"
 
 mkdir -p /opt
-cd /opt
+cd /opt || exit
 echo "URL: $cacheUrl"
 
 if DownloadURL "$cacheUrl" "" "$sha" "$target"; then
@@ -31,13 +31,16 @@ if DownloadURL "$cacheUrl" "" "$sha" "$target"; then
 else
     echo "Emsdk isn't cached. Cloning it"
     sudo git clone https://github.com/emscripten-core/emsdk.git
-    cd emsdk
-    sudo ./emsdk install "$version"
+    cd emsdk || exit
+    if ! sudo ./emsdk install "$version"; then
+        echo "Error: emsdk installation failed"
+        exit 1
+    fi
     sudo ./emsdk activate "$version"
 fi
 
 # platform-specific toolchain and node binaries. urls obtained from "emsdk install"
-if uname -a |grep -q Darwin; then
+if uname -a | grep -q Darwin; then
     pathNodeExecutable="node-$versionNode-darwin-x64/bin/node"
 else
     pathNodeExecutable="node-$versionNode-linux-x64/bin/node"

coin/provisioning/common/windows/emsdk.ps1

@@ -11,8 +11,9 @@ $temp = "$env:tmp"
 $cacheUrl = "https://ci-files01-hki.ci.qt.io/input/emsdk/emsdk_windows_${zipVersion}.zip"
 $sha = "ab376d218f1a66302c36770977948f74f0576a42"
 
-# Make sure python is in the path
-Prepend-Path "C:\Python27"
+# Python used for '.\emsdk install'
+$pythonPath = [System.Environment]::GetEnvironmentVariable("PYTHON3_PATH", "Machine")
+Prepend-Path $pythonPath
 
 cd "C:\\Utils"
 $installLocationEmsdk = "C:\\Utils\\emsdk"
@@ -24,11 +25,18 @@ try {
     cd $installLocationEmsdk
     .\emsdk activate $version
 } catch {
-    Write-Host "Can't find cached emsdk. Cloning it"
+    Write-Host "Can't find cached emsdk or another error occurred. Cloning it"
+    Write-Host "Error details: $_"
+
     C:\PROGRA~1\Git\bin\git clone https://github.com/emscripten-core/emsdk.git
     cd $installLocationEmsdk
-    .\emsdk install $version
-    .\emsdk activate $version
+
+    try {
+        .\emsdk install $version
+        .\emsdk activate $version
+    } catch {
+        throw "emsdk installation failed: $_"
+    }
 }
 
 $versionWinPython = $($Env:EMSDK_PYTHON -split ('python\\') -split ('_64bit'))[1]