Cmake fails due to Gtest dependency on Ubuntu Studio 22.04 about plug

[offa]

As mentioned above you can try libgmock-dev too. gtest and gmock are needed and Ubuntu seems to split into two packages here.

[offa]

Does the Ubuntu package install a more or less up-to-date version of GTest (1.12.1 is latest)? It should include headers and libraries to work properly. In doubt you can use alternatives, eg. Conan or building GTest from source (that's what CI does).

Is it maybe possible to build without the dependency to Gtest? Thanks in advance!

Of course! You can set UNITTEST CMake option to OFF and build without tests / GTest dependency. Either set it through GUI or by passing -DUNITTEST=OFF to Cmake.

[d0h1]

Thanks a lot! -DUNITTEST=OFF did the trick for building plug. Unfortunately I now get ERROR: Invalid effect id: 186 ERROR: Resource busy when trying to connect to the amp. Interestingly my Mustang III v2 is recognized as Mustang IV v2 when running lsusb. I will need to dig in the udev rules.

[d0h1]

I see now in the code that usbPID is the same for Mustangs III, IV and V v2. sudo make install did not put any new rule into /etc/udev/rules.d/ apparently, so I added your 50-mustang.rules manually and rebooted but that did not help. User belongs to the plugdev group.

[offa]

There should be three files installed:

• 50-mustang.rules
• 70-mustang-uaccess.rules
• 70-mustang-plugdev.rules

Do you have the others too?

[j824h]

I suspect libgmock-dev is not installed in your system.

The "cmake .." command fails due to Gtest dependency on Ubuntu Studio 22.04

CMake Error at /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find GTest (missing: GTest_Mock_INCLUDE_DIR GTest_Mock_LIBRARY)
Call Stack (most recent call first):
  /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
  cmake/FindGTest.cmake:33 (find_package_handle_standard_args)
  test/CMakeLists.txt:1 (find_package)

I installed libgtest-dev, build the libraries (got 2 *.a files) and moved them to /usr/lib but cmake still fails as above. Any ideas? Is it maybe possible to build without the dependency to Gtest? Thanks in advance!

[j824h]

I suspect you already got through the permission issue, since libusb-1.0 is not complaining about Permission denied.
Then we probably should move to #6.
I already found that my Mustang I V2 uses a dialect, so it is likely that III, IV do so.
I suggest trying my patch b536b2a.

Thanks a lot! -DUNITTEST=OFF did the trick for building plug. Unfortunately I now get ERROR: Invalid effect id: 186 ERROR: Resource busy when trying to connect to the amp. Interestingly my Mustang III v2 is recognized as Mustang IV v2 when running lsusb. I will need to dig in the udev rules.

[ScottG489]

I ran into this issue as well. It looks like on my system (Ubuntu 22.04) when I install libgtest-dev it installs version 1.11.0-3. You mentioned 1.12.1 so perhaps this version is too old?

Otherwise, cmake -DUNITTEST=OFF .. also worked for me.

Unfortunately, it doesn't look like it's able to find my amp (Mustang LT25)