[package] qt/6.x.x: Can't build WebEngine on Windows

[mabean]

Description

I'm trying to build Qt 6.8 (little bit changed recipe) with WebEngine on Windows, but get a error, which is related to the long paths limit I assume.

I tried to use the shortest possible build cache path (like D:/b/), but the error still occurs. Same problem I got on 6.7.3 version. That makes me think, that it's just impossible to build WebEngine for the latest Qt 6 version using CMake + ninja approach in the current recipe. Ninja has problems with the long paths even in the latest versions (https://developercommunity.visualstudio.com/t/compiler-cant-find-source-file-in-path/10221576#T-N10648230).

I also created a related bug for Qt: https://bugreports.qt.io/browse/QTBUG-130921

Package and Environment Details

• Package Name/Version: qt/6.7.3
• Operating System+version: Windows 10/11
• Compiler+version: MSVC 19.41
• Conan version: conan 2.9.1
• Python version: Python 3.9.2

Conan profile

[settings]
arch=x86_64
build_type=Release
compiler=msvc
compiler.cppstd=17
compiler.runtime=dynamic
compiler.runtime_type=Release
compiler.version=194
os=Windows

Steps to reproduce

conan create . --build=missing -o qtwebengine=True

Logs

Click to expand log

ninja -t msvc -e environment.x64 -- "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.41.34120\bin\Hostx64\x64\cl.exe" /c gen/base/base_jumbo_40.cc /Foobj/base/base/base_jumbo_40.obj /nologo /showIncludes -DBASE_IMPLEMENTATION -DIS_RAW_PTR_IMPL -DCOM_INIT_CHECK_HOOK_DISABLED -DUSE_AURA=1 -DOFFICIAL_BUILD -DTOOLKIT_QT -D_CRT_NONSTDC_NO_WARNINGS -D_WINSOCK_DEPRECATED_NO_WARNINGS -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -D_HAS_EXCEPTIONS=0 -D__STD_C -D_CRT_RAND_S -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_DEPRECATE -D_ATL_NO_OPENGL -D_WINDOWS -DCERT_CHAIN_PARA_HAS_EXTRA_FIELDS -DPSAPI_VERSION=2 -DWIN32 -D_SECURE_ATL -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -DWIN32_LEAN_AND_MEAN -DNOMINMAX -D_UNICODE -DUNICODE -DNTDDI_VERSION=NTDDI_WIN10_NI -D_WIN32_WINNT=0x0A00 -DWINVER=0x0A00 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 
-I. -Igen -I../../../../../../../../../qt6602b01dd4816/s/src/qtwebengine/src/3rdparty/chromium -I../../../../../../../../../qt6602b01dd4816/s/src/qtwebengine/src/3rdparty/chromium/third_party/perfetto/include -Igen/third_party/perfetto/build_config -Igen/third_party/perfetto -I../../../../../../../../../qt6602b01dd4816/s/src/qtwebengine/src/3rdparty/chromium/base/allocator/partition_allocator/src -Igen/base/allocator/partition_allocator/src -I../../../../../../../../../qt6602b01dd4816/s/src/qtwebengine/src/3rdparty/chromium/third_party/abseil-cpp -I../../../../../../../../../qt6602b01dd4816/s/src/qtwebengine/src/3rdparty/chromium/third_party/boringssl/src/include -I../../../../../../../../../qt6602b01dd4816/s/src/qtwebengine/src/3rdparty/chromium/third_party/protobuf/src -Igen/protoc_out /wd4091 /wd4127 /wd4251 /wd4275 /wd4312 /wd4324 /wd4351 /wd4355 /wd4503 /wd4589 /wd4611 /wd4100 /wd4121 /wd4244 /wd4505 /wd4510 /wd4512 /wd4610 /wd4838 /wd4995 /wd4996 /wd4456 /wd4457 /wd4458 /wd4459 /wd4200 /wd4201 /wd4204 /wd4221 /wd4245 /wd4267 /wd4305 /wd4389 /wd4702 /wd4701 /wd4703 /wd4661 
/wd4706 /wd4715 /wd4003 /wd4068 /wd5051 /w34996 /wd4244 /Gy /FS /bigobj /utf-8 /Zc:preprocessor /wd5105 /MD /FIbuild/precompile.h /O2 /Ob2 /Oy- /Zc:inline /Gw /Fpobj/base/base_cc.pch /Yubuild/precompile.h /wd4577 /std:c++20 /TP /GR- /Fd"obj/base/base_cc.pdb"
.\../../../../../../../../../qt6602b01dd4816/s/src/qtwebengine/src/3rdparty/chromium/base/allocator/partition_alloc_support.cc(29): fatal error C1083: Cannot open include file: 'base/allocator/partition_allocator/src/partition_alloc/shim/allocator_shim_default_dispatch_to_partition_alloc.h': No such file or directory