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digitalmars.D.ldc - how do i fix undefined reference with betterC ?

reply test <test gmail.com> writes:
I am use betterC with pthread_attr_t and 1.12.0 (DMD v2.082.0, 
LLVM 7.0.0) for Android 64 in termux,  get this error:

undefined reference to 
`_D4core3sys5posixQk5types14pthread_attr_t6__initZ'

The same code in linux and macOS has no error ?
Oct 11 2018
next sibling parent reply Joakim <dlang joakim.fea.st> writes:
On Friday, 12 October 2018 at 02:27:35 UTC, test wrote:

 I am use betterC with pthread_attr_t and 1.12.0 (DMD v2.082.0, 
 LLVM 7.0.0) for Android 64 in termux,  get this error:

 undefined reference to 
 `_D4core3sys5posixQk5types14pthread_attr_t6__initZ'


beta1 or beta2? Cross-compiling or natively compiling?


 The same code in linux and macOS has no error ?


Are you using betterC on those other platforms too? I believe 
that's a druntime symbol that it's generating, which shouldn't be 
there for betterC. I'm able to reproduce this in Termux natively 
but not on linux/x64, could be a bug in betterC or an even 
longer-standing issue where the D frontend randomly puts out 
those symbols.

File an issue on github and we'll look into it:

https://github.com/ldc-developers/ldc/issues
Oct 11 2018
parent reply test <test gmail.com> writes:
On Friday, 12 October 2018 at 03:02:55 UTC, Joakim wrote:

 https://github.com/ldc-developers/ldc/issues


I use ldmd2-beta on my Galaxy Phone, use BetterC on destroy and 
android.

I am not sure how to reduct the code exmaple, if I can get a 
example will try open issue.

 Kagamin

Thanks for tips.
Oct 12 2018
parent reply Joakim <dlang joakim.fea.st> writes:
On Friday, 12 October 2018 at 12:24:04 UTC, test wrote:

 On Friday, 12 October 2018 at 03:02:55 UTC, Joakim wrote:

 https://github.com/ldc-developers/ldc/issues


 I use ldmd2-beta on my Galaxy Phone, use BetterC on destroy and 
 android.

 I am not sure how to reduct the code exmaple, if I can get a 
 example will try open issue.


It's okay, I filed an issue with my reproducible sample code:

https://github.com/ldc-developers/ldc/issues/2876

I was only able to reproduce with 64-bit ARM, not 32-bit. Same 
for you?


  Kagamin

 Thanks for tips.


I confirmed that his workaround fixed this problem.
Oct 15 2018
next sibling parent reply Kagamin <spam here.lot> writes:
pthread_attr_t is 5*size_t size, which might confuse initializer, 
but also has a gap on 64-bit.
Oct 15 2018
parent Kagamin <spam here.lot> writes:
Oops, no, it's likely char[16], in C char sometimes means byte, 
not text.
Oct 15 2018
prev sibling parent test <test gmail.com> writes:
On Monday, 15 October 2018 at 08:31:25 UTC, Joakim wrote:

 I was only able to reproduce with 64-bit ARM, not 32-bit. Same 
 for you?


I only has a 64-bit android, and don't know how to made 32-bit to 
work on 64-bit termux.


 Thanks for tips.


 I confirmed that his workaround fixed this problem.



Yes, thanks again.

I  have never develop on Android, the plan is to write  a so file 
from Termux copy it into my desk, build with Android studio and 
SDK 26.


I plan use betterC to avoid GC.

Do I have to install SDK 26 or some NDK package on Termux to 
build so file, and the so file can be used on my Desktop android 
studio project ?

How to modify this file to use my so files?


apply plugin: 'com.android.application'

android {
     compileSdkVersion 28
     defaultConfig {
         applicationId "com.hahaha.demo"
         minSdkVersion 23
         targetSdkVersion 28
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
         ndk {
             moduleName = "TestProject"
             abiFilters "armeabi-v7a"
         }
     }
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles 
getDefaultProguardFile('proguard-android.txt'), 
'proguard-rules.pro'
         }
     }
     productFlavors {
         create("arm") {
             ndk.with {
                 abiFilters += "armeabi-v7a"
                 ndk.ldFlags += 
"-L${file("lib/armeabi-v7a/")}".toString()
             }
         }
     }
}

dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'com.android.support:appcompat-v7:28.0.0'
}
Oct 16 2018
prev sibling parent Kagamin <spam here.lot> writes:
On Friday, 12 October 2018 at 02:27:35 UTC, test wrote:

 I am use betterC with pthread_attr_t and 1.12.0 (DMD v2.082.0, 
 LLVM 7.0.0) for Android 64 in termux,  get this error:

 undefined reference to 
 `_D4core3sys5posixQk5types14pthread_attr_t6__initZ'

 The same code in linux and macOS has no error ?


You can just leave it uninitialized
pthread_attr_t attr=void;
You will need to call pthread_attr_init anyway.
Oct 12 2018