Fix: nintendoswitch compilation (#21368)

* Fix: make nintendoswitch someGcc, remove symlink support for nintendoswitch, add getAppFilename for nintendoswitch

* Fix: use getApplHeuristic on nintendoswitch

lib/posix/posix.nim

@@ -584,7 +584,8 @@ proc pread*(a1: cint, a2: pointer, a3: int, a4: Off): int {.
 proc pwrite*(a1: cint, a2: pointer, a3: int, a4: Off): int {.
   importc, header: "<unistd.h>".}
 proc read*(a1: cint, a2: pointer, a3: int): int {.importc, header: "<unistd.h>".}
-proc readlink*(a1, a2: cstring, a3: int): int {.importc, header: "<unistd.h>".}
+when not defined(nintendoswitch):
+  proc readlink*(a1, a2: cstring, a3: int): int {.importc, header: "<unistd.h>".}
 proc ioctl*(f: FileHandle, device: uint): int {.importc: "ioctl",
       header: "<sys/ioctl.h>", varargs, tags: [WriteIOEffect].}
   ## A system call for device-specific input/output operations and other
@@ -603,7 +604,10 @@ proc setsid*(): Pid {.importc, header: "<unistd.h>".}
 proc setuid*(a1: Uid): cint {.importc, header: "<unistd.h>".}
 proc sleep*(a1: cint): cint {.importc, header: "<unistd.h>".}
 proc swab*(a1, a2: pointer, a3: int) {.importc, header: "<unistd.h>".}
-proc symlink*(a1, a2: cstring): cint {.importc, header: "<unistd.h>".}
+when not defined(nintendoswitch):
+  proc symlink*(a1, a2: cstring): cint {.importc, header: "<unistd.h>".}
+else:
+  proc symlink*(a1, a2: cstring): cint = -1
 proc sync*() {.importc, header: "<unistd.h>".}
 proc sysconf*(a1: cint): int {.importc, header: "<unistd.h>".}
 proc tcgetpgrp*(a1: cint): Pid {.importc, header: "<unistd.h>".}

lib/pure/os.nim

@@ -254,7 +254,7 @@ proc findExe*(exe: string, followSymlinks: bool = true;
     for ext in extensions:
       var x = addFileExt(x, ext)
       if fileExists(x):
-        when not defined(windows):
+        when not (defined(windows) or defined(nintendoswitch)):
           while followSymlinks: # doubles as if here
             if x.symlinkExists:
               var r = newString(maxSymlinkLen)
@@ -702,6 +702,8 @@ proc getAppFilename*(): string {.rtl, extern: "nos$1", tags: [ReadIOEffect], noW
       result = getApplHaiku()
     elif defined(openbsd):
       result = getApplOpenBsd()
+    elif defined(nintendoswitch):
+      result = ""
 
     # little heuristic that may work on other POSIX-like systems:
     if result.len == 0:

lib/std/private/ossymlinks.nim

@@ -67,7 +67,7 @@ proc expandSymlink*(symlinkPath: string): string {.noWeirdTarget.} =
   ##
   ## See also:
   ## * `createSymlink proc`_
-  when defined(windows):
+  when defined(windows) or defined(nintendoswitch):
     result = symlinkPath
   else:
     result = newString(maxSymlinkLen)

lib/std/sysatomics.nim

@@ -15,7 +15,7 @@ when defined(nimPreviewSlimSystem):
 
 const
   hasThreadSupport = compileOption("threads") and not defined(nimscript)
-const someGcc = defined(gcc) or defined(llvm_gcc) or defined(clang)
+const someGcc = defined(gcc) or defined(llvm_gcc) or defined(clang) or defined(nintendoswitch)
 const someVcc = defined(vcc) or defined(clang_cl)
 
 type