MSVC: CMake err for determine type char ??

[PlutusCN]

I try to install with the command "cmake .. -DCMAKE_BUILD_TYPE="buildtype" -DFOONATHAN_MEMORY_BUILD_EXAMPLES=OFF -DFOONATHAN_MEMORY_BUILD_TESTS=OFF -DFOONATHAN_MEMORY_BUILD_TOOLS=ON -DCMAKE_INSTALL_PREFIX=../install -DBUILD_SHARED_LIBS=ON" , but there occur an error, below is the record:

E:\Dev\study\open_source\DDS\foonathan_memory_msvc\build>cmake .. -DCMAKE_BUILD_TYPE="buildtype" -DFOONATHAN_MEMORY_BUILD_EXAMPLES=OFF -DFOONATHAN_MEMORY_BUILD_TESTS=OFF -DFOONATHAN_MEMORY_BUILD_TOOLS=ON -DCMAKE_INSTALL_PREFIX=../install -DBUILD_SHARED_LIBS=ON
-- Building for: Visual Studio 17 2022
-- Selecting Windows SDK version 10.0.26100.0 to target Windows 10.0.19045.
-- The C compiler identification is MSVC 19.44.35211.0
-- The CXX compiler identification is MSVC 19.44.35211.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: D:/IDE/Microsoft/Visual_Studio/2022/Community/VC/Tools/MSVC/14.44.35207/bin/Hostx64/x64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: D:/IDE/Microsoft/Visual_Studio/2022/Community/VC/Tools/MSVC/14.44.35207/bin/Hostx64/x64/cl.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test HAVE_CXX_ATOMIC_NOFLAG
-- Performing Test HAVE_CXX_ATOMIC_NOFLAG - Success
-- Getting container node sizes
CMake Error at cmake/get_container_node_sizes.cmake:39 (message):
Unable to determine alignment of C++ type char - no error text matching
align_of<..., ##> in compiler output |Change Dir:
'E:/Dev/study/open_source/DDS/foonathan_memory_msvc/build/src/CMakeFiles/CMakeTmp'

Run Build Command(s):
D:/IDE/Microsoft/Visual_Studio/2022/Community/MSBuild/Current/Bin/amd64/MSBuild.exe
cmTC_c689b.vcxproj /p:Configuration=Debug /p:Platform=x64
/p:VisualStudioVersion=17.0 /v:n

閫傜敤浜?.NET Framework MSBuild 鐗堟湰 17.14.14+a129329f1

鐢熸垚鍚姩鏃堕棿涓?2025/7/7 22:19:49銆?

鑺傜偣 1
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PrepareForBuild:

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InitializeBuildStatus:

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ClCompile:

D:\IDE\Microsoft\Visual_Studio\2022\Community\VC\Tools\MSVC\14.44.35207\bin\HostX64\x64\CL.exe /c /Zi /W3 /WX- /diagnostics:column /Od /Ob0 /D _MBCS /D WIN32 /D _WINDOWS /D TEST_TYPE=char /D "CMAKE_INTDIR=\"Debug\"" /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /GR /Fo"cmTC_c689b.dir\Debug\\" /Fd"cmTC_c689b.dir\Debug\vc143.pdb" /external:W3 /Gd /TP /errorReport:queue E:\Dev\study\open_source\DDS\foonathan_memory_msvc\cmake\get_align_of.cpp
鐢ㄤ簬 x64 鐨?Microsoft (R) C/C++ 浼樺寲缂栬瘧鍣?19.44.35211 鐗?
鐗堟潈鎵€鏈?C) Microsoft Corporation銆備繚鐣欐墍鏈夋潈鍒┿€?
cl /c /Zi /W3 /WX- /diagnostics:column /Od /Ob0 /D _MBCS /D WIN32 /D _WINDOWS /D TEST_TYPE=char /D "CMAKE_INTDIR=\"Debug\"" /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /GR /Fo"cmTC_c689b.dir\Debug\\" /Fd"cmTC_c689b.dir\Debug\vc143.pdb" /external:W3 /Gd /TP /errorReport:queue E:\Dev\study\open_source\DDS\foonathan_memory_msvc\cmake\get_align_of.cpp
get_align_of.cpp

E:\Dev\study\open_source\DDS\foonathan_memory_msvc\cmake\get_align_of.cpp(6,27):
error C2338: static_assert failed: 'this should fail, the purpose of this
is to generate a compile error on this type that contains the alignment
value on this target'
[E:\Dev\study\open_source\DDS\foonathan_memory_msvc\build\src\CMakeFiles\CMakeTmp\cmTC_c689b.vcxproj]

    E:\Dev\study\open_source\DDS\foonathan_memory_msvc\cmake\get_align_of.cpp(6,27):
    妯℃澘瀹炰緥鍖栦笂涓嬫枃(鏈€鏃╃殑瀹炰緥鍖栦笂涓嬫枃)涓?
        E:\Dev\study\open_source\DDS\foonathan_memory_msvc\cmake\get_align_of.cpp(16,25):
        鏌ョ湅瀵规鍦ㄧ紪璇戠殑 绫?妯℃澘 瀹炰緥鍖栤€渁lign_of<char,1>鈥濈殑寮曠敤

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澶辫触銆?

鐢熸垚澶辫触銆?

鈥淓:\Dev\study\open_source\DDS\foonathan_memory_msvc\build\src\CMakeFiles\CMakeTmp\cmTC_c689b.vcxproj鈥?榛樿鐩爣)
(1) ->

(ClCompile 鐩爣) ->

E:\Dev\study\open_source\DDS\foonathan_memory_msvc\cmake\get_align_of.cpp(6,27): error C2338: static_assert failed: 'this should fail, the purpose of this is to generate a compile error on this type that contains the alignment value on this target' [E:\Dev\study\open_source\DDS\foonathan_memory_msvc\build\src\CMakeFiles\CMakeTmp\cmTC_c689b.vcxproj]



  0 涓鍛?
  1 涓敊璇?

宸茬敤鏃堕棿 00:00:00.32

|
Call Stack (most recent call first):
cmake/get_container_node_sizes.cmake:57 (get_alignof_type)
cmake/get_container_node_sizes.cmake:137 (unique_aligned_types)
src/CMakeLists.txt:80 (get_container_node_sizes)

-- Configuring incomplete, errors occurred!

[lingerer]

The problem is caused by when cmake using

template<typename T, size_t alignment>
struct align_of
{
	static_assert(alignment == 0, "this should fail, the purpose of this is to generate a compile error on this type that contains the alignment value on this target");
};

template<typename T>
using get_align_of = align_of<T, alignof(T)>;

The vs2022 compiler shows it try to init align_of<char,1> and then fail. I don't understand the purpose of the design.

[lingerer]

Ok. The key is to make vs output english error message.
One method I test is under powerscript，set
$env:VSLANG="1033"

[XMatrixXiang]

The problem is caused by when cmake using

template<typename T, size_t alignment>
struct align_of
{
	static_assert(alignment == 0, "this should fail, the purpose of this is to generate a compile error on this type that contains the alignment value on this target");
};

template<typename T>
using get_align_of = align_of<T, alignof(T)>;

The vs2022 compiler shows it try to init align_of<char,1> and then fail. I don't understand the purpose of the design.

The purpose is to obtain the byte alignment values of various basic data types during compilation. However, the compilation output under Chinese systems contains garbled Chinese characters, which causes the regular expression matching to fail.
The regular expression matching logic in CMake is as follows:
Look for the align_of<..., ##> in the compiler error output string(REGEX MATCH "align_of<.*,[ ]*([0-9]+)[ul ]*>" align_of_matched ${align_output})

[XMatrixXiang]

Ok. The key is to make vs output english error message. One method I test is under powerscript，set $env:VSLANG="1033"

This method works well, and my specific steps are as follows:
Step 1: Install the English language pack for VS2022, then switch the language of VS2022 to English.
Step 2:Enter the following commands in the command line tool:set VSLANG=1033cmake-gui
Then configure in the popped-up CMake-GUI, and everything will work normally afterward.

[liebebaby]

Thank you for solving this issue. Subsequent improvements to the regular expression “align_of<.,[ ]([0-9]+)[ul ]*>” may be required.