Add windows/bin/setup-build-utilities.ps1

diff --git a/windows/bin/setup-build-utilities.ps1 b/windows/bin/setup-build-utilities.ps1
new file mode 100644 (file)
index 0000000..0be39f0
--- /dev/null
+++ b/windows/bin/setup-build-utilities.ps1
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+# This script tries to find specific build utilities in the user's
+# path and if it doesn't find one falls back to set up the path to the
+# utility in the Graphviz build utilities submodule at
+# windows\dependencies\graphviz-build-utilities.
+#
+# It should be sourced from a PowerShell script like so:
+#
+# Set-ExecutionPolicy Bypass -Force -Scope Process
+# setup-build-utilities.ps1
+#
+
+$ErrorActionPreference = "Stop"
+
+$GRAPHVIZ_WINDOWS_BIN = $PSScriptRoot
+$GRAPHVIZ_WINDOWS = Split-Path $GRAPHVIZ_WINDOWS_BIN -Parent
+$GRAPHVIZ_ROOT = Split-Path $GRAPHVIZ_WINDOWS -Parent
+
+$VS_BUILD_TOOLS = "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools"
+$CMAKE_BIN = "$VS_BUILD_TOOLS\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin"
+$MSBUILD_BIN = "$VS_BUILD_TOOLS\MSBuild\Current\Bin"
+
+$exit_status = 0
+
+function find_or_fallback($programs, $fallback_path) {
+
+    $script:all_programs = "$script:all_programs $programs"
+
+    $not_found = ""
+    $programs.Split(" ") | ForEach {
+        $program = $_
+        if ($exe = (& Invoke-Expression "Get-Command -EA Continue $program.exe" 2>$null).Source) {
+            echo "Found $program at $exe"
+            $found = "$found $program"
+        } else {
+            if ("$not_found" -ne "") {
+                $not_found = "$not_found, $program"
+            } else {
+                $not_found = $program
+            }
+        }
+    }
+
+    if ("$not_found" -ne "") {
+        echo "Fallback needed for: $not_found"
+        echo "Setting up fallback path for: $programs to $fallback_path"
+        $env:Path = $fallback_path + ";" + $env:Path
+    }
+}
+
+$build_utilities_path = "$GRAPHVIZ_ROOT\windows\dependencies\graphviz-build-utilities"
+
+find_or_fallback "awk bison flex sed swig" "$build_utilities_path"
+find_or_fallback "makensis" "$build_utilities_path\NSIS\Bin"
+find_or_fallback "perl" "$build_utilities_path\Perl64\Bin"
+find_or_fallback "python3" "$build_utilities_path\Python38-32"
+find_or_fallback "pytest" "$build_utilities_path\Python38-32\Scripts"
+find_or_fallback "diff grep" "$build_utilities_path\GnuWin\bin"
+find_or_fallback "cmake cpack" "$CMAKE_BIN"
+find_or_fallback "msbuild" "$MSBUILD_BIN"
+
+if (-NOT (cpack.exe --help | grep 'CPACK_GENERATOR')) {
+    echo "Moving $CMAKE_BIN to front of PATH in order to find CMake's cpack"
+    $CMAKE_BIN_ESCAPED = echo $CMAKE_BIN | sed 's#\\#\\\\#g'
+    $path = (Invoke-Expression 'echo $Env:Path' | sed "s#;$CMAKE_BIN_ESCAPED##")
+    $Env:Path="$CMAKE_BIN;$path"
+}
+
+$ErrorActionPreference = "Continue"
+if (-NOT (sort.exe /? 2>$null | grep "SORT")) {
+    $ErrorActionPreference = "Stop"
+    echo "Moving C:\WINDOWS\system32 to front of PATH in order to find Windows' sort"
+    $path = (Invoke-Expression 'echo $Env:Path' | sed 's#;C:\\WINDOWS\\system32;#;#')
+    $Env:Path="C:\WINDOWS\system32;$path"
+}
+$ErrorActionPreference = "Stop"
+
+$script:all_programs += " sort"
+
+
+echo "Final check where all utilites are found:"
+
+$script:all_programs.Trim().Split(" ") | ForEach {
+    $program = $_
+    if ($result = (Invoke-Expression "Get-Command -EA Continue $program.exe" 2>$null).Source) {
+        echo $result
+    } else {
+        Write-Error -EA Continue "Fatal error: $program still not found"
+        $exit_status=1
+    }
+}
+
+# Special checks
+
+if (-NOT (cpack.exe --help | grep 'CPACK_GENERATOR')) {
+    $exe = (Get-Command cpack.exe 2>$null).Source
+    Write-Error -EA Continue "Found an unknown cpack at $exe"
+    $exit_status = 1
+}
+
+$ErrorActionPreference = "Continue"
+if (-NOT (sort.exe /? 2>$null | grep "SORT")) {
+    $ErrorActionPreference = "Stop"
+    $exe = (Get-Command sort.exe 2>$null).Source
+    Write-Error -EA Continue "Found an unknown sort at $exe"
+    $exit_status = 1
+}
+$ErrorActionPreference = "Stop"
+
+if ($exit_status -eq 0) {
+    echo "All utilities have been found. Happy building!"
+} else {
+    Write-Error -EA Continue "Some utilities were not found"
+}
+
+exit $exit_status