android gradle plugin 1.4 beta ndk clang

Question

below is my build.gradle. build failed cause implicit declaration of function 'pipe' is invalid in C99 [-Wimplicit-function-declaration] if (-1 == pipe(ctx->control_pipe)) { ^ apply plugin: 'com.android.model.application'

model {
    android {
        compileSdkVersion = 21
        buildToolsVersion = "21.1.2"

        defaultConfig.with {
            applicationId = "org.shadowvpn.shadowvpn"
            minSdkVersion.apiLevel = 15
            targetSdkVersion.apiLevel = 21
            versionCode = 1
            versionName = "1.0"
        }
    }
    android.buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles += file('proguard-rules.pro')
        }
    }
    android.ndk {
        moduleName = "ShadowVPN-jni"
        toolchain = "clang"
        toolchainVersion = "3.6"
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_aead/chacha20poly1305/sodium")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_auth/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_auth/hmacsha256/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_auth/hmacsha256/cp/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_auth/hmacsha512/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_auth/hmacsha512/cp/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_auth/hmacsha512256/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_auth/hmacsha512256/cp/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_box/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_box/curve25519xsalsa20poly1305/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_box/curve25519xsalsa20poly1305/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/hsalsa20/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/hsalsa20/ref2/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/salsa20/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/salsa20/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/salsa2012/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/salsa2012/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/salsa208/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_core/salsa208/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_generichash/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_generichash/blake2/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_generichash/blake2/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_hash/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_hash/sha256/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_hash/sha256/cp/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_hash/sha512/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_hash/sha512/cp/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_onetimeauth/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_onetimeauth/poly1305/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_pwhash/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_pwhash/scryptsalsa208sha256/nosse/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_pwhash/scryptsalsa208sha256/sse/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_scalarmult/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_scalarmult/curve25519/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_scalarmult/curve25519/donna_c64/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_scalarmult/curve25519/ref10/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_secretbox/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_secretbox/xsalsa20poly1305/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_shorthash/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_shorthash/siphash24/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_shorthash/siphash24/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_sign/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_sign/ed25519/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_sign/ed25519/ref10/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_sign/edwards25519sha512batch/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_sign/edwards25519sha512batch/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/aes128ctr/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/aes128ctr/portable/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/chacha20/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/chacha20/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/salsa20/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/salsa20/amd64_xmm6/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_stream/salsa20/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_verify/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_verify/16/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_verify/16/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_verify/32/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_verify/32/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_verify/64/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/crypto_verify/64/ref/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/include/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/include/sodium/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/randombytes/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/randombytes/salsa20/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/randombytes/sysrandom/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/libsodium/src/libsodium/sodium/")}".toString()
        CFlags += "-I${file("src/main/jni/ShadowVPN/src")}".toString()
        ldLibs += "log"
        stl = "system"
    }
}

ERROR LOGS:

compiling vpn.c successful.
/Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/vpn.c:35:13: warning: implicit declaration of function 'pipe' is invalid in C99 [-Wimplicit-function-declaration]
  if (-1 == pipe(ctx->control_pipe)) {
            ^
/Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/vpn.c:47:5: warning: implicit declaration of function 'close' is invalid in C99 [-Wimplicit-function-declaration]
    close(ctx->tun);
    ^
2 warnings generated.
compiling version.c failed.
/Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/src/libsodium/sodium/version.c:2:10: fatal error: 'version.h' file not found
#include "version.h"
         ^
1 error generated.

compiling aead_chacha20poly1305.c failed.
In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/aead_chacha20poly1305.c:3:
In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/cmptest.h:11:
/Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/src/libsodium/include/sodium.h:48:10: fatal error: 'sodium/version.h' file not found
#include "sodium/version.h"
         ^
1 error generated.

    compiling auth.c failed.
    In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/auth.c:3:
    In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/cmptest.h:11:
    /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/src/libsodium/include/sodium.h:48:10: fatal error: 'sodium/version.h' file not found
    #include "sodium/version.h"
             ^
    1 error generated.

    compiling auth2.c failed.
    In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/auth2.c:4:
    In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/cmptest.h:11:
    /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/src/libsodium/include/sodium.h:48:10: fatal error: 'sodium/version.h' file not found
    #include "sodium/version.h"
             ^
    1 error generated.

    compiling utils.c successful.

    compiling auth7.c failed.
    In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/auth7.c:3:
    In file included from /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/test/default/cmptest.h:11:
    /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/src/libsodium/include/sodium.h:48:10: fatal error: 'sodium/version.h' file not found
    #include "sodium/version.h"
             ^
    1 error generated.

Answer 1

Your build is not failing because of the pipe function, that's a warning. Your build is failing because the compiler cannot find the version.h file. I'm guessing you are missing one of those (many) -I flags, specifically maybe for this folder: /Users/shawn/Developer/github/ShadowVPNAndroid/mobile/src/main/jni/ShadowVPN/libsodium/src/libsodium/sodium/