Archlinux Docker fails with 'Unknown arguments specified'

[twilson90]

I'm trying to build in a docker container:

RUN cmake -DTARGET_ARCH=x86_64-w64-mingw32     -DGCC_ARCH=x86-64-v3     -DSINGLE_SOURCE_LOCATION="/home/user/packages"     -DRUSTUP_LOCATION="/home/user/install_rustup"     -G Ninja -B build64 -S mpv-winbuild-cmake:
0.528 -- The C compiler identification is GNU 14.2.1
0.540 -- Detecting C compiler ABI info
0.592 -- Detecting C compiler ABI info - done
0.603 -- Check for working C compiler: /usr/sbin/cc - skipped
0.603 -- Detecting C compile features
0.604 -- Detecting C compile features - done
2.032 -- MINGW_INSTALL_PREFIX dir: /opt/build64/install/x86_64-w64-mingw32
2.032 -- SINGLE_SOURCE_LOCATION dir: /home/user/packages
2.032 -- RUSTUP_LOCATION dir: /home/user/install_rustup
2.032 -- Compiler used: gcc
2.032 -- Malloc: /usr/lib/libmimalloc.so
2.032 -- Ccache: OFF
2.032 -- Target toolchain to build: x86_64-w64-mingw32
2.080 CMake Error at cmake/custom_steps.cmake:130 (if):
2.080   if given arguments:
2.080
2.080     "EXISTS" "/home/user/packages/mingw-w64" "GIT_CLONE_FLAGS" "--filter=tree" "0/.git"
2.080
2.080   Unknown arguments specified
2.080 Call Stack (most recent call first):
2.080   toolchain/mingw-w64.cmake:12 (force_rebuild_git)
2.080   toolchain/CMakeLists.txt:32 (include)
2.080
2.080
2.081 -- Configuring incomplete, errors occurred!

This is my Dockerfile:

FROM manjarolinux/base AS build

RUN cat <<EOF >> /etc/pacman.conf
[multilib]
Include = /etc/pacman.d/mirrorlist
EOF
RUN cat /etc/pacman.conf

RUN pacman -Syyu --noconfirm
RUN pacman -S git gyp mercurial subversion ninja cmake meson ragel yasm nasm asciidoc enca gperf unzip p7zip gcc-multilib clang lld libc++ libc++abi python-pip curl lib32-gcc-libs lib32-glib2 ccache --noconfirm

ENV PIP_BREAK_SYSTEM_PACKAGES=1
RUN pip3 install rst2pdf mako jsonschema

RUN pacman -S llvm --noconfirm

WORKDIR /opt
RUN git clone https://github.com/shinchiro/mpv-winbuild-cmake.git --depth=1

RUN pacman -U https://archive.archlinux.org/repos/2024/06/07/extra/os/x86_64/mimalloc-2.1.2-1-x86_64.pkg.tar.zst --noconfirm

RUN cmake -DTARGET_ARCH=x86_64-w64-mingw32 \
    -DGCC_ARCH=x86-64-v3 \
    -DSINGLE_SOURCE_LOCATION="/home/user/packages" \
    -DRUSTUP_LOCATION="/home/user/install_rustup" \
    -G Ninja -B build64 -S mpv-winbuild-cmake

WORKDIR /opt/build64
RUN ninja download
RUN ninja gcc
RUN ninja mpv

FROM scratch AS artifact
COPY --from=build /opt/mpv/out /

FROM build AS release

Someone else noted this problem:

rust-lang/rust#126200