使用xrepo install libtorch成功后，构建也能成功,却不能正确执行

[rolfma19]

请大家看一下我的问题，谢谢！

报错信息

> Executing task: xmake r main  <

terminate called after throwing an instance of 'c10::Error'
  what():  Could not find schema for aten::ones.
Exception raised from findSchemaOrThrow at /home/rolfma/.xmake/cache/packages/2204/l/libtorch/v1.11.0/source/libtorch/aten/src/ATen/core/dispatch/Dispatcher.cpp:81 (most recent call first):
frame #0: <unknown function> + 0x647afc (0x55679d73eafc in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #1: <unknown function> + 0x8277c (0x55679d17977c in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #2: <unknown function> + 0x60c49d (0x55679d70349d in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #3: <unknown function> + 0x220c62 (0x55679d317c62 in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #4: <unknown function> + 0x2a25fc (0x55679d3995fc in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #5: <unknown function> + 0x86ad5 (0x55679d17dad5 in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #6: <unknown function> + 0x882e6 (0x55679d17f2e6 in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #7: <unknown function> + 0x84f54 (0x55679d17bf54 in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)
frame #8: __libc_start_main + 0xf3 (0x7f14d12450b3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #9: <unknown function> + 0x84d4e (0x55679d17bd4e in /home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main)

error: execv(/home/rolfma/CppProject/TorchTest/build/linux/x86_64/debug/main) failed(-1)
The terminal process "/usr/bin/bash '-c', 'xmake r main '" failed to launch (exit code: 255).

xmake.lua

add_rules("mode.debug", "mode.release")
add_requires("libtorch")

target("main")
    set_kind("binary")
    add_packages("libtorch")
    add_files("src/*.cpp")

main.cpp

#include <iostream>
#include <torch/torch.h>

int main(int argc, char** argv)
{
    torch::Tensor tensor=torch::ones({2,3});
    std::cout<<tensor<<std::endl;
    return 0;
}

[waruqi]

这种问题，你只能自己调下包了。。https://github.com/xmake-io/xmake-repo/blob/master/packages/l/libtorch/xmake.lua

要么是包脚本缺某些 macros 开关，那就提 pr 改进包

如果是 libtorch 自身bug导致，那就自己调下 libtorch 源码，或者到 libtorch issues 里面去反馈问题

如果是 main 里面使用代码不对导致，自己 debug 调下

[rolfma19]

好的，谢谢您！我刚刚学习使用 xmake 不久，这里的文件 https://github.com/xmake-io/xmake-repo/blob/master/packages/l/libtorch/xmake.lua 是我在用xrepo install libtorch命令时自动运行的lua脚本，还是我在使用add_requires("libtorch")时自动补充到我的xmake.lua文件中的内容？那我该怎么修改它然后调试呢？

[waruqi]

会自动调用，xmake-repo clone下来，xrepo add-repo xxx /hhh/xmake-repo 关键这个仓库，优先切到这个仓库的torch包

[rolfma19]

好的，谢谢您！

[xq114]

这是因为之前默认安装的static libtorch，而static libtorch的dispatch有问题。我在这个pr里切到默认shared了， xmake-io/xmake-repo#1169 你可以等这个patch merge之后再试试，或者手动加{configs={shared=true}}

[rolfma19]

好的，我也发现是static libtorch，但是我一直没有改对/QAQ，谢谢您的帮助！

[rolfma19]

这是因为之前默认安装的static libtorch，而static libtorch的dispatch有问题。我在这个pr里切到默认shared了， xmake-io/xmake-repo#1169 你可以等这个patch merge之后再试试，或者手动加{configs={shared=true}}

您好，谢谢您的帮助。我使用

add_rules("mode.debug", "mode.release")
add_requires("libtorch 1.8.2",{configs={shared=true}})
target("main")
    set_kind("binary")
    add_packages("libtorch")
    add_files("src/*.cpp")

动态构建libtoch，已经解决这个问题，但是 libtorch 版本是 1.8.2, 使用默认的 1.11.0 时，在动态构建时会出错

Checking patch third_party/breakpad/src/client/linux/handler/exception_handler.cc...
error: while searching for:
  // SIGSTKSZ may be too small to prevent the signal handlers from overrunning
  // the alternative stack. Ensure that the size of the alternative stack is
  // large enough.
  static const unsigned kSigStackSize = std::max(16384, SIGSTKSZ);
  // Only set an alternative stack if there isn't already one, or if the current
  // one is too small.
error: patch failed: third_party/breakpad/src/client/linux/handler/exception_handler.cc:138
Applying patch third_party/breakpad/src/client/linux/handler/exception_handler.cc with 1 reject...
Rejected hunk #1.
if you want to get more verbose errors, please see:
  -> /home/rolfma/.xmake/cache/packages/2204/l/libtorch/v1.11.0/installdir.failed/logs/install.txt
error: install failed!
The terminal process "/usr/bin/bash '-c', 'xmake -w'" terminated with exit code: 255.

针对 1.11.0 版本，包内会引入一个 patch，但是这里的引入 patch 好像出了问题。

add_patches("1.11.0", path.join(os.scriptdir(), "patches", "1.11.0", "gcc11.patch"), "1404b0bc6ce7433ecdc59d3412e3d9ed507bb5fd2cd59134a254d7d4a8d73012")

我看了一下 cache 里面的 libtorch 源码，应该是之前静态安装的时候，这个 patch 已经加过了，后面再

add_requires("libtorch",{configs={shared=true}})

重新构建时候，这个 patch 已经加过了，不能重复添加。于是删除已有的 cache，使用

xrepo install -k shared libtorch

从一开始就动态构建，便不再有这个问题。

[xq114]

这是一个bug，不是版本的问题，你本地运行xrepo clean之后再重新安装1.11.0也是ok的。

[xq114]

#2289

[waruqi]

xmake update -s dev 更新下试试，加了 submodule clean，不过我还没测试过，先试试