Impossible to compile using MSYS2-UCRT64 or MSYS2-MINGW64

[zacharynevin-stemcell]

Hi there,

I am trying to get this plugin to work on Windows 10 with gstreamer and gst-python.

To install gstreamer and gst-python, I installed MSYS2 as that is the official way to install the Python bindings on Windows as a result of the dependency on PyGObject. Using the UCRT64 environment, I ran the following commands:

pacman -S \
mingw-w64-ucrt-x86_64-gstreamer \
mingw-w64-ucrt-x86_64-gst-plugins-base \
mingw-w64-ucrt-x86_64-gst-good \
mingw-w64-ucrt-x86_64-gst-python

This is extremely convenient and works well to get access to the Gstreamer library and its Python bindings.

However, now I want to install the gst-plugin-pylon library. The problem is, the MSYS2 environment uses the gcc compiler which doesn't seem to be compatible with this library or the Pylon C++ development files. The meson setup build command works well and all the required dependencies are found, but when I run ninja -C build I get several thousand compilation errors across various Pylon C++ files.

Do you know how to install the gst-plugin-pylon package within an MSYS2 environment (whether that is UCRT64 or MINGW64)?

Output of meson setup build:

The Meson build system
Version: 1.4.0
Source dir: C:/**/**/gst-plugin-pylon
Build dir: C:/**/**/gst-plugin-pylon/build
Build type: native build
Project name: gst-plugin-pylon
Project version: 0.7.0
C compiler for the host machine: cc (gcc 13.2.0 "cc (Rev6, Built by MSYS2 project) 13.2.0")
C linker for the host machine: cc ld.bfd 2.42
C++ compiler for the host machine: c++ (gcc 13.2.0 "c++ (Rev6, Built by MSYS2 project) 13.2.0")
C++ linker for the host machine: c++ ld.bfd 2.42
Host machine cpu family: x86_64
Host machine cpu: x86_64
Found pkg-config: YES (C:\msys64\ucrt64\bin/pkg-config.EXE) 2.2.0
Run-time dependency gstreamer-1.0 found: YES 1.24.3
Message: Building against GStreamer 1.24.3
Program python3 found: YES (C:/msys64/ucrt64/bin/python.exe)
Compiler for C supports link arguments -Wl,-Bsymbolic-functions: YES
Compiler for C supports arguments -fno-strict-aliasing: YES
Message: Disabling GLib cast checks
Checking for size of "char" : 1
Checking for size of "int" : 4
Checking for size of "long" : 4
Checking for size of "short" : 2
Checking for size of "void*" : 8
Checking for size of "off_t" : 8
Compiler for C supports arguments -fvisibility=hidden: YES
Compiler for C supports arguments -Wmissing-declarations: YES
Compiler for C++ supports arguments -Wmissing-declarations: YES
Compiler for C supports arguments -Wredundant-decls: YES
Compiler for C++ supports arguments -Wredundant-decls: YES
Compiler for C supports arguments -Wwrite-strings: YES
Compiler for C++ supports arguments -Wwrite-strings: YES
Compiler for C supports arguments -Winit-self: YES
Compiler for C++ supports arguments -Winit-self: YES
Compiler for C supports arguments -Wmissing-include-dirs: YES
Compiler for C++ supports arguments -Wmissing-include-dirs: YES
Compiler for C supports arguments -Wno-multichar: YES
Compiler for C++ supports arguments -Wno-multichar: YES
Compiler for C supports arguments -Wvla: YES
Compiler for C++ supports arguments -Wvla: YES
Compiler for C supports arguments -Wpointer-arith: YES
Compiler for C++ supports arguments -Wpointer-arith: YES
Compiler for C supports arguments -Wmissing-prototypes: YES
Compiler for C supports arguments -Wdeclaration-after-statement: YES
Compiler for C supports arguments -Wold-style-definition: YES
Compiler for C supports arguments -Waggregate-return: YES
Run-time dependency gstreamer-base-1.0 found: YES 1.24.3
Run-time dependency gstreamer-check-1.0 found: YES 1.24.3
Run-time dependency gstreamer-pbutils-1.0 found: YES 1.24.3
Run-time dependency gstreamer-allocators-1.0 found: YES 1.24.3
Run-time dependency gstreamer-video-1.0 found: YES 1.24.3
Run-time dependency glib-2.0 found: YES 2.80.0
Run-time dependency gobject-2.0 found: YES 2.80.0
Header "gst/gstconfig.h" has symbol "GST_DISABLE_GST_DEBUG" with dependency gstreamer-1.0: NO
Message: GStreamer debug system is enabled
Found CMake: C:\msys64\ucrt64\bin/cmake.EXE (3.29.2)
Run-time dependency pylon (modules: pylon::pylon) found: YES 7.4.0
Run-time dependency valgrind found: NO (tried pkgconfig)
Run-time dependency gstreamer-plugins-base-1.0 found: YES 1.24.3
Dependency gstpylon found: YES 0.7.0 (overridden)
Program C:/msys64/ucrt64/libexec/gstreamer-1.0/gst-plugins-doc-cache-generator found: YES (C:/msys64/ucrt64/bin/python.exe C:/msys64/ucrt64/libexec/gstreamer-1.0/gst-plugins-doc-cache-generator)
Program hotdoc found: NO
Message: Hotdoc not found, not building the documentation
Message: Meta python bindings disabled
Configuring config.h using configuration
Message: install git commit hooks
Build targets in project: 9

gst-plugin-pylon 0.7.0

    Plugins: pylon

  User defined options
    backend: ninja

Found ninja-1.12.0 at C:\msys64\ucrt64\bin/ninja.EXE

Attached is an image of the output from ninja -C build:

[thiesmoeller]

@zacharynevin-stemcell compiling pylon is only verified using gcc/clang on linux and msvc/clang on windows and clang/gcc on macos.

To my knowledge collabora did some work to allow compiling the python bindings on windows using msvc

I'll check what is the problem there

[thiesmoeller]

From my analyis it is possible to get this running by using gstreamer and pygobject from conda.

Is this an option for you?