cmake or gcc issue; filesystem not found

[arvidjaar]

In my other post I included a complication of the latest gnuradio. [...] It still didn't compile.

What still do not know what compiler is used to compile it.

[krakopo]

Use update alternatives method that was suggested earlier to make gcc10 or 11 your default. See https://en.opensuse.org/User:Tsu2/gc...e-alternatives.

Or, heavy handed, uninstall gcc7, 10 should then become your default.

Whichever approach, aftwerwards confirm gcc points to gcc-10/11 (e.g. gcc --version) before compiling.

[gariac]

What still do not know what compiler is used to compile it.

Apologies. I tried 7,10, and 11. None Compiled.

I noticed https://github.com/merbanan/rtl_433 which all though the instructions don't show it it set up to use cmake, it has all the necessary files. It compiled fine under gcc-7,10 and 11 and I am running the version under gcc-11 at the moment. (Apparently I have a few weather stations nearby.)

So lets summarize this. I was missing a file for gcc-11. Otherwise the compilers are fine and at least one case of cmake worked fine. So gnuradio is using some element of cmake that may not be working on 15.3. I will ask the gnuradio list to help me use git to get some older releases.

[arvidjaar]

I tried 7,10, and 11. None Compiled.

How exactly you "tried" it? If your application actually used GCC 10 or 11, you would not get these errors. So apparently although you think you are using GCC 10 or 11 in reality you are using default compiler which is GCC 7. But as you continue to be silent about what you did, it is impossible to guess what could go wrong.

[gariac]

How exactly you "tried" it? If your application actually used GCC 10 or 11, you would not get these errors. So apparently although you think you are using GCC 10 or 11 in reality you are using default compiler which is GCC 7. But as you continue to be silent about what you did, it is impossible to guess what could go wrong.

I am using the flag for cmake to set the gcc compiler. That flag works fine.

cmake -DCMAKE_C_COMPILER=gcc-11  -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ../

Using the instructions from
https://wiki.gnuradio.org/index.php/...GR#From_Source I have built and tested the 3.9 maintenance release on opensue15.3 using gcc-11.

building release 3.9.0.0
100% tests passed, 0 tests failed out of 252
Total Test time (real) = 149.09 sec

Using the 3.10 release it has the namespace error. I will take this up with the gnuradio forum and report back. I gather they are using debian based linux.

[arvidjaar]

I am using the flag for cmake to set the gcc compiler. That flag works fine.

cmake -DCMAKE_C_COMPILER=gcc-11  -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ../

OK, thank you for sharing. If anything, this may help someone else in similar situation.

[gariac]

cmake -DCMAKE_CXX_COMPILER=g++-11 -DCMAKE_C_COMPILER=gcc-11 -DENABLE_GR_SOAPY=ON -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ../

The addition of -DCMAKE_CXX_COMPILER=g++-11 got rid of the namespace error.

I'm working on some dependencies that cropped up once I added -DCMAKE_CXX_COMPILER=g++-11

[tckosvic]

FYI,
As a challenge, I tried to compile gnuradio on leap 15.3 That was unsuccessful even with gcc version changes.

I tried on an updated to current level tumbleweed in a vm. That was successful. It was done with no tinkering with the gcc version settings. There are however many hidden dependencies that needed to be installed for cmake to finish configutation. Took many hours but worked. You need to dedicate some time to it but can get it done.

In the meantime, I went back and installed package management version of gnu radio onto leap 15.3 . It opens up the gui ok.

tom kosvic

[gariac]

FYI,
As a challenge, I tried to compile gnuradio on leap 15.3 That was unsuccessful even with gcc version changes.

I tried on an updated to current level tumbleweed in a vm. That was successful. It was done with no tinkering with the gcc version settings. There are however many hidden dependencies that needed to be installed for cmake to finish configutation. Took many hours but worked. You need to dedicate some time to it but can get it done.

In the meantime, I went back and installed package management version of gnu radio onto leap 15.3 . It opens up the gui ok.

tom kosvic

I built gnuradio 3.9 on 15.3. I am pretty sure I have the dependencies though some show up in red on yast meaning there is no appropriate version for 15.3. Trust me I have spent hours.

For some reason it doesn't find numpy when building 3.10, but does for 3.9.