[bug] msys2 fails to build cmake template

[jputcu]

Environment details

On Windows 11, I've installed a fresh msys2 environment, using the newer ucrt64 and conan-2.0.5.

The right configuration, because I'm running conan from within ucrt64 shell.

tools.microsoft.bash:active=True
tools.microsoft.bash:subsystem=msys2

conanfile.py (dummy/0.1.0): RUN: cmake -G "Ninja" -DCMAKE_TOOLCHAIN_FILE="C:/Users/joris/workspace/3rdparty/dummy/build/Release/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="C:/Users/joris/workspace/3rdparty/dummy" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "C:/Users/joris/workspace/3rdparty/dummy/."
'.' is not recognized as an internal or external command,
operable program or batch file.

As far as I can deduce, the issue is with the last cmake configuration argument which is the path of the CMakeLists.txt and doesn't like that final dot: "C:/Users/joris/workspace/3rdparty/dummy/."

Steps to reproduce

Create a minimal cmake library:

> conan new cmake_lib -d name=dummy -d version=0.1.0
...
> conan build . -v trace

Logs

Profile host:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=17
compiler.libcxx=libstdc++11
compiler.version=13.1
os=Windows
[options]
boost/*:pch=False
boost/*:without_fiber=True
boost/*:without_iostreams=True
boost/*:without_stacktrace=True
[conf]
tools.microsoft.bash:active=True
tools.microsoft.bash:subsystem=msys2
tools.cmake.cmaketoolchain:generator=Ninja

Profile build:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=17
compiler.libcxx=libstdc++11
compiler.version=13.1
os=Windows
[options]
boost/*:pch=False
boost/*:without_fiber=True
boost/*:without_iostreams=True
boost/*:without_stacktrace=True
[conf]
tools.microsoft.bash:active=True
tools.microsoft.bash:subsystem=msys2
tools.cmake.cmaketoolchain:generator=Ninja
...
======== Calling build() ========
conanfile.py (dummy/0.1.0): Calling build()
conanfile.py (dummy/0.1.0): Running CMake.configure()
conanfile.py (dummy/0.1.0): RUN: cmake -G "Ninja" -DCMAKE_TOOLCHAIN_FILE="C:/Users/joris/workspace/3rdparty/dummy/build/Release/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="C:/Users/joris/workspace/3rdparty/dummy" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "C:/Users/joris/workspace/3rdparty/dummy/."
'.' is not recognized as an internal or external command,
operable program or batch file.

Traceback (most recent call last):
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/errors.py", line 51, in conanfile_exception_formatter
    yield
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/client/conanfile/build.py", line 13, in run_build_method
    conanfile.build()
  File "C:/Users/joris/workspace/3rdparty/dummy/conanfile.py", line 43, in build
    cmake.configure()
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conan/tools/cmake/cmake.py", line 112, in configure
    self._conanfile.run(command)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/model/conan_file.py", line 334, in run
    raise ConanException("Error %d while executing" % retcode)
conans.errors.ConanException: Error 1 while executing

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conan/cli/cli.py", line 171, in run
    command.run(self._conan_api, self._commands[command_argument].parser, args[0][1:])
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conan/cli/command.py", line 134, in run
    info = self._method(conan_api, parser, *args)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conan/cli/commands/build.py", line 63, in build
    conan_api.local.build(conanfile)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conan/api/subapi/local.py", line 97, in build
    run_build_method(conanfile, app.hook_manager)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/client/conanfile/build.py", line 11, in run_build_method
    with conanfile_exception_formatter(conanfile, "build"):
  File "C:/msys64/ucrt64/lib/python3.10/contextlib.py", line 153, in __exit__
    self.gen.throw(typ, value, traceback)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/errors.py", line 66, in conanfile_exception_formatter
    _raise_conanfile_exc(exc)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/errors.py", line 46, in _raise_conanfile_exc
    raise ConanExceptionInUserConanfileMethod(traceback.format_exc())
conans.errors.ConanExceptionInUserConanfileMethod: Traceback (most recent call last):
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/errors.py", line 51, in conanfile_exception_formatter
    yield
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/client/conanfile/build.py", line 13, in run_build_method
    conanfile.build()
  File "C:/Users/joris/workspace/3rdparty/dummy/conanfile.py", line 43, in build
    cmake.configure()
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conan/tools/cmake/cmake.py", line 112, in configure
    self._conanfile.run(command)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/model/conan_file.py", line 334, in run
    raise ConanException("Error %d while executing" % retcode)
conans.errors.ConanException: Error 1 while executing


ERROR: Traceback (most recent call last):
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/errors.py", line 51, in conanfile_exception_formatter
    yield
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/client/conanfile/build.py", line 13, in run_build_method
    conanfile.build()
  File "C:/Users/joris/workspace/3rdparty/dummy/conanfile.py", line 43, in build
    cmake.configure()
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conan/tools/cmake/cmake.py", line 112, in configure
    self._conanfile.run(command)
  File "C:/msys64/ucrt64/lib/python3.10/site-packages/conans/model/conan_file.py", line 334, in run
    raise ConanException("Error %d while executing" % retcode)
conans.errors.ConanException: Error 1 while executing

[jputcu]

Partially relates to #12877 which evolved in the same issue while trying to diagnose it.

[jputcu]

Without the tools.microsoft.bash:subsystem=msys2 it works.

[memsharded]

I am checking this.
The trailing . in folders doesn't seem to be the thing (did a PR for it in in #14601), but the sourcing of environment shell scripts with . conanbuild.sh && cmd ... that for some reason doesn't work correctly in msys2, I am having a look

[memsharded]

I have been trying to make a basic source of a shell script work in msys2-mingw64, but it seems it just doesn't work. I cannot make something as simple as:

import subprocess

subprocess.call('. "/home/myuser/file.sh"', shell=True)

To work, while this perfectly works in Linux and msys2 (but not msys2-mingw64).

I am re-checking some assumptions about subsystems in Windows (as a side note, I find them quite problematic in general and I try to avoid them, just opting-in for the build with win_bash=True, but never running inside the subsystem (I am a Windows user)

[memsharded]

Reopening, was accidentally closed by #14061, but it was not the root cause, will follow in other PRs

[realysy]

While running conan install . --build=missing conan need to download and build zlib/1.2.11, I encounter a similar error: '.' is not recognized as an internal or external command

zlib/1.2.11: Generating aggregated env files
zlib/1.2.11: Generated aggregated env files: ['conanbuild.sh', 'conanrun.sh']
zlib/1.2.11: Calling build()
zlib/1.2.11: Apply patch (conan): separate static/shared builds, disable debug suffix, disable building examples
zlib/1.2.11: Apply patch (portability): fix condition for WIDECHAR usage
zlib/1.2.11: Running CMake.configure()
zlib/1.2.11: RUN: cmake -G "MinGW Makefiles" -DCMAKE_TOOLCHAIN_FILE="generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="C:/Users/tom/.conan2/p/b/zlibe1ed0e2089db7/p" -DCMAKE_SH="CMAKE_SH-NOTFOUND" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "C:/Users/tom/.conan2/p/b/zlibe1ed0e2089db7/b/src"
'.' is not recognized as an internal or external command,
operable program or batch file.

zlib/1.2.11: ERROR:
Package '74fce2c720f804facc619f996bab77ff99796c4d' build failed
zlib/1.2.11: WARN: Build folder C:\Users\tom.conan2\p\b\zlibe1ed0e2089db7\b\build\Release
ERROR: zlib/1.2.11: Error in build() method, line 81
cmake.configure()
ConanException: Error 1 while executing

I tried to look into the build folder in .conan, but did not find any clue of line 81 or ..

But I have done some exps of tools.microsoft.bash config in ~/.conan2/global.conf, and it appears that tools.microsoft.bash:active = True and tools.microsoft.bash:subsystem = msys2 cannot be set simultaneously if I need to build a recipe during conan install.

Exp	active	path	subsystem	Result
1	not set	not set	not set	Success
2	TRUE	not set	not set	Success
3	not set	not set	msys2	Success
4	TRUE	not set	msys2	Error
5	TRUE	E:/msys2/msys64/usr/bin/bash.exe	msys2	Error
6	TRUE	/e/msys2/msys64/usr/bin/bash.exe	msys2	Error

My environments (should I set tools.microsoft.bash in global.conf? ):

• system is Win11
• the command conan install is running in msys2/usr/bin/bash.exe
• conan (v2.11.0) is installed by pip in a conda env of python 3.7;
• conda is installed to Windows system directly, not in msys2
• my conan profile:

  [settings]
  arch=x86_64
  build_type=Release
  compiler=gcc
  compiler.cppstd=gnu17
  compiler.libcxx=libstdc++11
  compiler.version=13
  os=Windows
  
  [buildenv]
  PATH+=(path)E:/msys2/msys64/ucrt64/bin
   
  [runenv]
  PATH+=(path)E:/msys2/msys64/ucrt64/bin

Finally, I set tools.microsoft.bash:active = True and tools.microsoft.bash:subsystem = msys2 in ~/.conan2/global.conf is for the reason that I want conan install to produce conanrun.sh instead of conanrun.bat in the build folder of my project, and it does work (I am using msys2/usr/bash.exe, not cmd.exe or powershell, so .sh files are better for me than .bat files).