Add Windows support and clean up toolchain (#10)

Reviewed-on: xt-sys/xtchain#10
Co-authored-by: Aiken Harris <harraiken@noreply.codingworkshop.git>
Co-committed-by: Aiken Harris <harraiken@noreply.codingworkshop.git>

scripts/xtchain.ps1

@@ -0,0 +1,57 @@
+# PROJECT:     XTchain
+# LICENSE:     See the COPYING.md in the top level directory
+# FILE:        scripts/xtchain.ps1
+# DESCRIPTION: XTchain Entry Script
+# DEVELOPERS:  Aiken Harris <harraiken91@gmail.com>
+
+# Get the absolute path to the XTchain
+$XTCDIR = (Get-Item -Path ".\").FullName
+
+# Read the XTchain version
+$env:XTCVER = Get-Content "${XTCDIR}\Version"
+
+# Load the library (Make sure the xtclib.ps1 file is PowerShell compatible)
+. "${XTCDIR}\lib\xtchain\xtclib.ps1"
+
+# Set the target architecture
+$env:TARGET = $args[0]
+if (-not $env:TARGET) { $env:TARGET = "amd64" }
+
+# Save the source directory
+$SRCDIR = $args[1]
+if (-not $SRCDIR) { $SRCDIR = (Get-Location).Path }
+
+# Make sure the compiler flags are clean
+$env:HOST = $null
+$env:CFLAGS = $null
+$env:CXXFLAGS = $null
+$env:LDFLAGS = $null
+
+# Update PATH
+$env:PATH = "${XTCDIR}\bin;" + $env:PATH
+
+# Display banner
+version
+
+# Invoke shell with fancy prompt
+function global:prompt {
+    $PROMPT = " XT Toolchain "
+    $CWD = (Get-Location).Path
+    $CHEVRON = [char]0xE0B0
+    $SEGMENTS = @(
+        @{ TEXT = $PROMPT; BGCOLOR = "Blue"; FGCOLOR = "White" },
+        @{ TEXT = " $CWD ";     BGCOLOR = "DarkCyan";     FGCOLOR = "White" }
+    )
+    for ($INDEX = 0; $INDEX -lt $SEGMENTS.Count; $INDEX++) {
+        $SEGMENT = $SEGMENTS[$INDEX]
+        $NEXTBG = if ($INDEX + 1 -lt $SEGMENTS.Count) { $SEGMENTS[$INDEX + 1].BGCOLOR } else { "Default" }
+        Write-Host $SEGMENT.TEXT -NoNewLine -ForegroundColor $SEGMENT.FGCOLOR -BackgroundColor $SEGMENT.BGCOLOR
+        if ($NEXTBG -ne "Default") {
+            Write-Host $CHEVRON -NoNewLine -ForegroundColor $SEGMENT.BGCOLOR -BackgroundColor $NEXTBG
+        } else {
+            Write-Host $CHEVRON -NoNewLine -ForegroundColor $SEGMENT.BGCOLOR
+        }
+    }
+    return " "
+}
+Set-Location -Path $SRCDIR