Following your experience. I understand MSVC support will soon be
deprecated altogether, many of us will soon need to deal with some of these
more intricate integration scenarios.
---
Sent from my Nokia 3310
On Sun, 8 Sept 2024, 20:22 Nikolas Kovacs, <kovacs...@gmail.com> wrote:
>
> The solution was to add the `/Zc:dllexportsInlines-` flag
> On Friday, August 30, 2024 at 1:34:52 PM UTC-4 Nikolas Kovacs wrote:
>
>> Hi,
>> I am embedding v8 into my C++ application and I am trying to use a
>> recent, stable version. I built 12.8 (
>> e6286d70c55da94a8e12658918989b9b9dc325c8).
>>
>> I was unable to build with `use_custom_libcxx` set to false and I read
>> online that MSVC support is mostly a nice-to-have. To use this, though, I
>> believe I have to use the clang-cl and libc++ from the v8 build process to
>> build my application that is embedding it.
>>
>> So, I've been trying for a few weeks now to migrate. Things seem to be
>> working mostly fine, but I am running into some build issues with my
>> applications that I cannot resolve.
>>
>> Below I am going to share some reproducible snippets of code and their
>> errors. Hopefully someone will be able to put me in the right direction
>> because I am very stuck.
>>
>> I can't figure out how to put in code blocks, so please forgive the
>> formatting.
>>
>> # test.cpp
>> ------------------
>>
>> #include <stdexcept> #include <memory> int main() { throw std::
>> runtime_error("Hello, World!"); // breaks std::make_shared<int>(2); //
>> breaks std::make_unique<int>(2); // this is fine }
>>
>> ```
>> clang-cl.exe -v test.cpp -fuse-ld=lld /clang:-fexceptions /EHsc
>> -I"W:\third_party\libcxx\include" -I"W:\third_party\libcxx\include.19"
>> -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG
>> "W:\third_party\libcxx\Debug\lib\libc++.dll.lib"
>> ```
>> In the command above, the include directories are
>> `//third_party/libc++/src/include` and
>> `//third_party/llvm-build/Release+Asserts/lib/clang/19/lib/include` from
>> the v8 project respectively.
>>
>> The files `__assertion_handler` and `__config_site` were both copied into
>> the first include dir from `//build_tools/third_party/libc++`
>>
>> The errors:
>>
>> ```
>> "W:\\VSSource\\repos\\ViciOnlineSDL2\\third_party\\clang\\lld-link"
>> -out:test.exe "-libpath:C:\\Program Files\\Microsoft Visual
>> Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.41.34120\\lib\\x64"
>> "-libpath:C:\\Program Files\\Microsoft Visual
>> Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.41.34120\\atlmfc\\lib\\x64"
>> "-libpath:C:\\Program Files (x86)\\Windows
>> Kits\\10\\Lib\\10.0.26100.0\\ucrt\\x64" "-libpath:C:\\Program Files
>> (x86)\\Windows Kits\\10\\Lib\\10.0.26100.0\\um\\x64" -nologo
>> "C:\\Users\\kovac\\AppData\\Local\\Temp\\test-7eb16d.obj"
>> "W:\\VSSource\\repos\\ViciOnlineSDL2\\third_party\\libcxx\\Debug\\lib\\libc++.dll.lib"
>> lld-link: error: undefined symbol: __declspec(dllimport) public: __cdecl
>> std::runtime_error::runtime_error(char const *)
>> >>> referenced by C:\Users\kovac\AppData\Local\Temp\test-7eb16d.obj:(main)
>>
>> lld-link: error: undefined symbol: public: __cdecl
>> std::runtime_error::runtime_error(class std::runtime_error const &)
>> >>> referenced by
>> C:\Users\kovac\AppData\Local\Temp\test-7eb16d.obj:(_CT??_R0?AVruntime_error@std
>> @@@8??0runtime_error@std@@QEAA@AEBV01@@Z24)
>>
>> lld-link: error: undefined symbol: public: virtual __cdecl
>> std::runtime_error::~runtime_error(void)
>> >>> referenced by
>> C:\Users\kovac\AppData\Local\Temp\test-7eb16d.obj:(_TI2?AVruntime_error@std
>> @@)
>> clang-cl: error: linker command failed with exit code 1 (use -v to see
>> invocation)
>> ```
>>
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