try

build_android.nims

@@ -5,6 +5,7 @@
 # for details about the copyright.
 
 import std/[os, strutils, sugar]
+from std/private/globs import nativeToUnixPath
 
 type
   CpuPlatform = enum
@@ -138,6 +139,7 @@ task compile, "Compile raylib project for Android":
         " --nimcache:" & nimcacheDir().parentDir / (ProjectName & "_" & $cpu) & " " & ProjectSourceFile)
   for f in listFiles(ProjectBuildPath):
     echo f
+  echo "inside lib"
   for f in listFiles(ProjectBuildPath / "lib" / AndroidCPUs[0].toArchName):
     echo f
   # Compile project .java code into .class (Java bytecode)
@@ -164,7 +166,7 @@ task compile, "Compile raylib project for Android":
   withDir(ProjectBuildPath):
     for cpu in AndroidCPUs:
       exec(AndroidBuildTools / "aapt" & " add " & "bin" / (ProjectName & ".unaligned.apk") & " " &
-          "lib" / cpu.toArchName / ("lib" & ProjectLibraryName & ".so"))
+          nativeToUnixPath("lib" / cpu.toArchName / ("lib" & ProjectLibraryName & ".so")))
   # Create zip-aligned APK package: bin/{ProjectName}.aligned.apk
   exec(AndroidBuildTools / "zipalign" & " -p -f 4 " & unalignedApkPath & " " & alignedApkPath)
   # Create signed APK package using generated Key: {ProjectName}.apk