Swift / Clang error: module 'Glibc' has no member named 'stdout'

[Vlad Gorlov]

Hi,

I am building Swift package "https://github.com/apple/swift-log" on macOS for Android using NDK 21.3.6528147 and getting errors shown below when targeting API 21:

```sh

error: module 'Glibc' has no member named 'stderr'

error: module 'Glibc' has no member named 'stdout'

```

As i understand clang not including `#define` directives (like `#define stdin (&__sF[0])` from `sysroot/usr/include/stdio.h`) when building `Glibc` clang module :0

Is there any workaround or solution how to `expose` stdin, stdout, and stderr to Swift (via clang module) ?

Thank you in advance!

* * *

To reproduce you can:

1. Download Swift Toolchain for Android "https://github.com/vgorloff/swift-everywhere-toolchain/releases/tag/1.0.65"

2. Create a file with following contents:

```swift

#if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)

import Darwin

#elseif os(Windows)

import MSVCRT

#else

import Glibc

#endif

func test() {

   tolower(5) // sysroot/usr/include/ctype.h

   fesetround(6) // sysroot/usr/include/fenv.h

   localeconv() // sysroot/usr/include/locale.h

   #if os(Android)

   isnan(7) // sysroot/usr/include/math.h

   #endif

   #if os(Android)

   _ = Glibc.stderr!

   _ = Glibc.stdout!

   #endif

   //> sysroot/usr/include/stdio.h

   _ = FOPEN_MAX

   _ = off_t()

   clearerr(nil)

   fclose(nil)

   //<

}

```

3. Compile this file for API 23 (should be OK):

```sh

/.../swift-android-toolchain/usr/bin/swiftc-arm-linux-androideabi ./FILE.swift -v -Xcc -D__ANDROID_API__=23

```

4. Compile this file for API 21 (should be the errors):

```sh

/.../swift-android-toolchain/usr/bin/swiftc-arm-linux-androideabi ./FILE.swift -v -Xcc -D__ANDROID_API__=21

```