[Ubuntu] Install gcc@12 from brew (#6258)

images/linux/scripts/installers/homebrew.sh

@@ -27,6 +27,12 @@ echo "Validate the installation reloading /etc/environment"
 reloadEtcEnvironment
 
 # Install additional brew packages
+
+# brew GCC installation needed because the default Ubuntu components
+# are too old for current brew software
+# See:
+# https://github.com/Homebrew/homebrew-core/issues/110877
+
 brew_packages=$(get_toolset_value .brew[].name)
 for package in $brew_packages; do
     echo "Install $package"

images/linux/scripts/tests/Tools.Tests.ps1

@@ -257,16 +257,22 @@ Describe "HHVM" -Skip:(Test-IsUbuntu22) {
 }
 
 Describe "Homebrew" {
+    $brewToolset = (Get-ToolsetContent).brew
+    $testCases = $brewToolset | ForEach-Object { @{brewName = $_.name; brewCommand = $_.command} }
+
     It "homebrew" {
         "brew --version" | Should -ReturnZeroExitCode
     }
 
-    Context "Packages" {
+    It "zstd has /usr/local/bin symlink" {
-        $testCases = (Get-ToolsetContent).brew | ForEach-Object { @{ ToolName = $_.name } }
+        "/usr/local/bin/zstd" | Should -Exist
+    }
 
-        It "<ToolName>" -TestCases $testCases {
+    It "homebrew package <brewName>" -TestCases $testCases {
-           "$ToolName --version" | Should -Not -BeNullOrEmpty
+        $brewPrefix = brew --prefix $brewName
-        }
+        $brewPackage = Join-Path $brewPrefix "bin" $brewCommand
+
+        "$brewPackage --version" | Should -ReturnZeroExitCode
     }
 }
 

images/linux/toolsets/toolset-1804.json

@@ -217,7 +217,14 @@
         ]
     },
     "brew": [
-        {"name": "zstd"}
+        {
+            "name": "gcc@12",
+            "command": "gcc-12"
+        },
+        {
+            "name": "zstd",
+            "command": "zstd"
+        }
     ],
     "docker": {
         "images": [

images/linux/toolsets/toolset-2004.json

@@ -217,7 +217,14 @@
         ]
     },
     "brew": [
-        {"name": "zstd"}
+        {
+            "name": "gcc@12",
+            "command": "gcc-12"
+        },
+        {
+            "name": "zstd",
+            "command": "zstd"
+        }
     ],
     "docker": {
         "images": [

images/linux/toolsets/toolset-2204.json

@@ -201,7 +201,10 @@
         ]
     },
     "brew": [
-        {"name": "zstd"}
+        {
+            "name": "zstd",
+            "command": "zstd"
+        }
     ],
     "docker": {
         "images": [