Optimize compiler flags (thx to bootsector)

Author: sanni

tools/oscr_tool/oscr_tool.ps1

@@ -384,6 +384,30 @@ try {
                 -replace '#define U8G2_WITH_FONT_ROTATION', '//#define U8G2_WITH_FONT_ROTATION' `
                 -replace '#define U8G2_WITH_UNICODE', '//#define U8G2_WITH_UNICODE' |
             Set-Content -Encoding ASCII $u8g2Header
+			
+            ### Step 9: Optimize Compiler ###
+            Write-Host "Step 9: Optimizing compiler..." -ForegroundColor Green
+            $platformLocalPath = Join-Path $root 'Arduino IDE\hardware\arduino\avr\platform.local.txt'
+
+            # Ensure target directory exists
+            $platformDir = Split-Path $platformLocalPath -Parent
+            if (-not (Test-Path $platformDir)) {
+                New-Item -Path $platformDir -ItemType Directory -Force | Out-Null
+            }
+
+            # Desired content as array (preserves indentation)
+            $platformLocalContent = @(
+                'compiler.c.extra_flags=-mcall-prologues'
+                'compiler.cpp.extra_flags=-mcall-prologues'
+                'compiler.S.extra_flags='
+                'compiler.ar.extra_flags='
+                'compiler.objcopy.eep.extra_flags='
+                'compiler.elf2hex.extra_flags='
+                'compiler.c.elf.extra_flags=-Wl,--relax'
+            )
+
+            # Create / overwrite file with UTF-8 encoding
+            $platformLocalContent | Set-Content -Path $platformLocalPath -Encoding UTF8 -Force
 
             Write-Host "DONE. Portable Arduino IDE for OSCR with updated AVR-GCC compiler is ready."
         }