[package] libgettext/0.21: can't build with clang

[AndreyMlashkin]

Package and Environment Details (include every applicable attribute)

• Package Name/Version: ffmpeg/4.4
• Operating System+version: windows 10
• Compiler+version: clang 12
• Conan version: conan 1.46.2

Conan profile (output of conan profile show default or conan profile show <profile> if custom profile is in use)

[settings]
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=Visual Studio
compiler.runtime=MD
compiler.version=16
cppstd=17
os=Windows
os_build=Windows
libgettext*:compiler=clang
libgettext*:compiler.version=12
[options]
[build_requires]
[env]
CONAN_CMAKE_GENERATOR=Ninja
libgettext*:CC=clang-cl
libgettext*:CXX=clang-cl

Steps to reproduce (Include if Applicable)

conan install libgettext/0.21@ --build missing -u -pr clang

Logs (Include/Attach if Applicable)

Click to expand log

Installing package: libgettext/0.21
Requirements
    libgettext/0.21 from 'conancenter' - Cache
    libiconv/1.16 from 'artifactory' - Cache
Packages
    libgettext/0.21:1a1df7f4e3d368a8e708784c6ac4706a9311bda6 - Build
    libiconv/1.16:3fb49604f9c2f729b85ba3115852006824e72cab - Cache
Build requirements
    msys2/cci.latest from 'artifactory' - Cache
Build requirements packages
    msys2/cci.latest:eee3fba89db6d777329de604625af8c30d46f080 - Cache

Installing (downloading, building) binaries...
libiconv/1.16: Already installed!
libiconv/1.16: Appending PATH environment var: D:\.conan\storage\libiconv\1.16\_\_\package\3fb49604f9c2f729b85ba3115852006824e72cab\bin
msys2/cci.latest: Already installed!
msys2/cci.latest: Creating MSYS_ROOT env var : D:\.conan\418666\1\bin\msys64
msys2/cci.latest: Creating MSYS_BIN env var : D:\.conan\418666\1\bin\msys64\usr\bin
msys2/cci.latest: Appending PATH env var with : D:\.conan\418666\1\bin\msys64\usr\bin
libgettext/0.21: Applying build-requirement: msys2/cci.latest
Downloading conan_sources.tgz completed [0.68k]
Decompressing conan_sources.tgz completed [0.00k]
libgettext/0.21: Configuring sources in D:\.conan\storage\libgettext\0.21\_\_\source
Downloading gettext-0.21.tar.gz completed [23615.09k]

libgettext/0.21: Copying sources to build folder
libgettext/0.21: Building your package in D:\.conan\storage\libgettext\0.21\_\_\build\1a1df7f4e3d368a8e708784c6ac4706a9311bda6
libgettext/0.21: Generator txt created conanbuildinfo.txt
libgettext/0.21: Aggregating env generators
libgettext/0.21: Calling build()
libgettext/0.21: WARN: Error running `configure --help`: Cannot recognize the Windows subsystem, install MSYS2/cygwin or specify a build_require to apply it.
libgettext/0.21: Calling:
 > /d/.conan/storage/libgettext/0.21/_/_/build/1a1df7f4e3d368a8e708784c6ac4706a9311bda6/source_subfolder/gettext-tools/configure HELP2MAN=/bin/true EMACS=no --disable-nls --disable-dependency-tracking --enable-relocatable --disable-c++ --disable-java --disable-csharp --disable-libasprintf --disable-curses --enable-threads=windows --with-libiconv-prefix=/d/.conan/storage/libiconv/1.16/_/_/package/3fb49604f9c2f729b85ba3115852006824e72cab --disable-shared --enable-static --prefix=D:/.conan/storage/libgettext/0.21/_/_/package/1a1df7f4e3d368a8e708784c6ac4706a9311bda6
libgettext/0.21:
libgettext/0.21: ERROR: Package '1a1df7f4e3d368a8e708784c6ac4706a9311bda6' build failed
libgettext/0.21: WARN: Build folder D:\.conan\storage\libgettext\0.21\_\_\build\1a1df7f4e3d368a8e708784c6ac4706a9311bda6
ERROR: libgettext/0.21: Error in build() method, line 130
        env_build.configure(args=args, build=build, host=host)
        ConanException: Cannot recognize the Windows subsystem, install MSYS2/cygwin or specify a build_require to apply it.