can't compile

[OdedNeoja]

After following the guide I always come to this result

[omerts]

Did you install the pylon software suite?

[OdedNeoja]

yep i install everything by the guide

[DarthBogdo]

Have you found the solution? I have the same issue.
I installed the pylon software suite from the official website, followed the installation instructions of gstream, but I get the same error of 'dependency "pylon" not found'.

[DarthBogdo]

I have tried moving to newer versions of meson, messing with environment variables, and applying arguments to commands. Nothing worked for me.
Here are the logs of the issue. Maybe someone can assist

`Determining dependency 'pylon' with CMake executable 'C:\Program Files\CMake\bin\cmake.EXE'
Try CMake generator: auto
Calling CMake (['C:\Program Files\CMake\bin\cmake.EXE']) in C:\Users\vodol\OneDrive\Desktop\C++ Projects\ConsoleApplication1\gst-plugin-pylon\build\meson-private\cmake_pylon with:

• "-DNAME=pylon"
• "-DARCHS="
• "-DVERSION="
• "-DCOMPS="
• "-DSTATIC=OFF"
• "-DCMAKE_PREFIX_PATH=C:/Program Files/Basler/pylon 7/Development/CMake/share/pylon/cmake/"
• "-DPYLON_ROOT=C:\Program Files\Basler\pylon 7\Development\CMake"
• "--trace-expand"
• "--trace-format=json-v1"
• "--no-warn-unused-cli"
• "--trace-redirect=cmake_trace.txt"
• "-DCMAKE_TOOLCHAIN_FILE=C:/Users/vodol/OneDrive/Desktop/C++ Projects/ConsoleApplication1/gst-plugin-pylon/build/meson-private/cmake_pylon/CMakeMesonToolchainFile.cmake"
• "."
• "-DCMAKE_PREFIX_PATH=C:\Program Files\Basler\pylon 7\Development\CMake"
  Run-time dependency pylon found: NO (tried cmake)
  Message: fallback to detect pylon 6.x
  CMake binary for host machine is cached.

Determining dependency 'pylon' with CMake executable 'C:\Program Files\CMake\bin\cmake.EXE'
Try CMake generator: auto
Calling CMake (['C:\Program Files\CMake\bin\cmake.EXE']) in C:\Users\vodol\OneDrive\Desktop\C++ Projects\ConsoleApplication1\gst-plugin-pylon\build\meson-private\cmake_pylon with:

• "-DNAME=pylon"
• "-DARCHS="
• "-DVERSION="
• "-DCOMPS="
• "-DSTATIC=OFF"
• "-DCMAKE_MODULE_PATH=C:\Users\vodol\OneDrive\Desktop\C++ Projects\ConsoleApplication1\gst-plugin-pylon/cmake"
• "--trace-expand"
• "--trace-format=json-v1"
• "--no-warn-unused-cli"
• "--trace-redirect=cmake_trace.txt"
• "-DCMAKE_TOOLCHAIN_FILE=C:/Users/vodol/OneDrive/Desktop/C++ Projects/ConsoleApplication1/gst-plugin-pylon/build/meson-private/cmake_pylon/CMakeMesonToolchainFile.cmake"
• "."
• "-DCMAKE_PREFIX_PATH=C:\Program Files\Basler\pylon 7\Development\CMake"
  Run-time dependency pylon found: NO (tried cmake)

gst-libs\gst\pylon\meson.build:28:16: ERROR: Dependency "pylon" not found, tried cmake
`

[thiesmoeller]

Our CI builds on windows

gst-plugin-pylon/.github/workflows/ci.yml

Line 100 in f9dc08c

build_windows_x86_64:

Can you check your steps against our setup?

[DarthBogdo]

Unfortunately, it didn't work. Here are my steps:

1. Download the Basler pylon 7.5.0 software suit software
2. Install meson 1.4.1 msi file
3. Install gstreamer packages
4. Open the developer command prompt in VS
5. Execute: set GSTREAMER_1_0_ROOT_MSVC_X86_64=C:\gstreamer\1.0\msvc_x86_64
   CMAKE_PREFIX_PATH=C:\Program Files\Basler\pylon 7\Development\CMake\pylon
   Path=%GSTREAMER_1_0_ROOT_MSVC_X86_64%\bin;%Path%
   PKG_CONFIG_PATH=%GSTREAMER_1_0_ROOT_MSVC_X86_64%\lib\pkgconfig
   PKG_CONFIG=%GSTREAMER_1_0_ROOT_MSVC_X86_64%\bin\pkg-config

Output:
The Meson build system
Version: 1.4.1
Source dir: C:\Users\vodol\OneDrive\Desktop\C++ Projects\ConsoleApplication2\gst-plugin-pylon
Build dir: C:\Users\vodol\OneDrive\Desktop\C++ Projects\ConsoleApplication2\gst-plugin-pylon\build
Build type: native build
Project name: gst-plugin-pylon
Project version: 0.7.0
C compiler for the host machine: cl (msvc 19.38.33130 "Microsoft (R) C/C++ Optimizing Compiler Version 19.38.33130 for x86")
C linker for the host machine: link link 14.38.33130.0
C++ compiler for the host machine: cl (msvc 19.38.33130 "Microsoft (R) C/C++ Optimizing Compiler Version 19.38.33130 for x86")
C++ linker for the host machine: link link 14.38.33130.0
Host machine cpu family: x86
Host machine cpu: x86
Found pkg-config: YES (C:\gstreamer\1.0\msvc_x86_64\bin\pkg-config) 0.29.2
Run-time dependency gstreamer-1.0 found: YES 1.22.7
Message: Building against GStreamer 1.22.7
Program python3 found: YES (C:\Users\vodol\anaconda3\python.exe)
Compiler for C supports arguments /utf-8: YES
Compiler for C supports link arguments -Wl,-Bsymbolic-functions: NO
Compiler for C supports arguments -fno-strict-aliasing: NO
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*" : 4
Checking for size of "off_t" : -1
Compiler for C supports arguments -Wmissing-declarations: NO
Compiler for C++ supports arguments -Wmissing-declarations: NO
Compiler for C supports arguments -Wredundant-decls: NO
Compiler for C++ supports arguments -Wredundant-decls: NO
Compiler for C supports arguments -Wwrite-strings: NO
Compiler for C++ supports arguments -Wwrite-strings: NO
Compiler for C supports arguments -Winit-self: NO
Compiler for C++ supports arguments -Winit-self: NO
Compiler for C supports arguments -Wmissing-include-dirs: NO
Compiler for C++ supports arguments -Wmissing-include-dirs: NO
Compiler for C supports arguments -Wno-multichar: NO
Compiler for C++ supports arguments -Wno-multichar: NO
Compiler for C supports arguments -Wvla: NO
Compiler for C++ supports arguments -Wvla: NO
Compiler for C supports arguments -Wpointer-arith: NO
Compiler for C++ supports arguments -Wpointer-arith: NO
Compiler for C supports arguments -Wmissing-prototypes: NO
Compiler for C supports arguments -Wdeclaration-after-statement: NO
Compiler for C supports arguments -Wold-style-definition: NO
Compiler for C supports arguments -Waggregate-return: NO
Run-time dependency gstreamer-base-1.0 found: YES 1.22.7
Run-time dependency gstreamer-check-1.0 found: YES 1.22.7
Run-time dependency gstreamer-pbutils-1.0 found: YES 1.22.7
Run-time dependency gstreamer-allocators-1.0 found: YES 1.22.7
Run-time dependency gstreamer-video-1.0 found: YES 1.22.7
Run-time dependency glib-2.0 found: YES 2.74.4
Run-time dependency gobject-2.0 found: YES 2.74.4
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:\Program Files\CMake\bin\cmake.EXE (3.29.6)
Run-time dependency pylon found: NO (tried cmake)
Message: fallback to detect pylon 6.x
Run-time dependency pylon found: NO (tried cmake)

gst-libs\gst\pylon\meson.build:28:16: ERROR: Dependency "pylon" not found, tried cmake

[DarthBogdo]

It seems similar to #68 , is there a work around the issue?

[thiesmoeller]

can you list contents of: C:\Program Files\Basler\pylon 7\Development\CMake\pylon
best as:

dir "%CMAKE_PREFIX_PATH%"

We did a cross check with also latest cmake latest meson ninja ( that you get for a fresh install ) it works on our side

CMake binary for host machine is not cached
CMake binary missing from cross or native file, or env var undefined.
Trying a default CMake fallback at cmake
Found CMake: C:\xxxxxxxxx\miniconda3\envs\test_gst\Library\bin\cmake.EXE (3.30.0)
Extracting basic cmake information
CMake Toolchain: Calling CMake once to generate the compiler state
Calling CMake (['C:\\xxxxxxxxx\\miniconda3\\envs\\test_gst\\Library\\bin\\cmake.EXE']) in C:\xxxxxxxxxx\gst-plugin-pylon\test_build\meson-private\__CMake_compiler_info__ with:
  - "--trace-expand"
  - "--trace-format=json-v1"
  - "--no-warn-unused-cli"
  - "--trace-redirect=cmake_trace.txt"
  - "-G"
  - "Ninja"
  - "-DCMAKE_TOOLCHAIN_FILE=C:/xxxxxxxxx/gst-plugin-pylon/test_build/meson-private/__CMake_compiler_info__/CMakeMesonTempToolchainFile.cmake"
  - "."
  - "-DCMAKE_PREFIX_PATH=C:\Program Files\Basler\pylon 7\Development\CMake\pylon\"

[DarthBogdo]

This is what shows up

[DarthBogdo]

If this helps:

When running this command:
meson setup build --prefix=%GSTREAMER_1_0_ROOT_MSVC_X86_64% --backend=vs2022

, the following issue occurs:

[thiesmoeller]

You call meson with an Option vs2022 ..
We don't do this

[thiesmoeller]

this is a working script using conda python:

rem "using conda to install all deps"
call conda install -y cmake meson ninja
call conda --version
echo "cmake ( installed in conda)"
call cmake --version
echo "python interpreter"
call python --version
echo "meson"
call meson --version
echo "ninja"
call ninja --version

rem setup the paths to gstreamer

set PKG_CONFIG_PATH=%GSTREAMER_1_0_ROOT_MSVC_X86_64%lib\pkgconfig
set PATH=%PATH%;%GSTREAMER_1_0_ROOT_MSVC_X86_64%\bin

cd gst-plugin-pylon
rmdir /q /s builddir
meson setup --vsenv builddir --prefix=%GSTREAMER_1_0_ROOT_MSVC_X86_64%
meson compile -C builddir
meson install -C builddir

[DarthBogdo]

Thank you! I was able to build it in a conda environment by following your instructions.

Great support! Thank you again for your work!

Unfortunately, the issue wasn't opened by me, so I can't close it.

[DarthBogdo]

Hello, @thiesmoeller, there's one more issue. Even though the meson succeeds, I get "No such element or plugin 'pylonsrc'" when running "gst-inspect-1.0 pylonsrc". What might be the cause?

[thiesmoeller]

first check if gst-inspect has blacklisted the plugin from a failed start in the past:

gst-inspect-1.0 -b

if this is the case delete the cache file in

C:\Users\<username>\AppData\Local\Microsoft\Windows\INetCache\gstreamer-1.0

if you now call gst-inspect-1.0 pylonsrc again you should see the correct output or error messages