The instructions in HowToBuildFromSources are for the old squeakvm. For Cog, use the mvm script under the various build directories based on platform/wordsize/ISA and then product/interpreter/object-memory. Here you will find the plugins.int and plugins.ext files. Now choose the build directory for your build variant (production, assert, debug etc.).

Example,

$ cd build.linux64x64/squeak.cog.spur/build $ ./mvm

On 12/06/20 8:35 pm, Christoph Thiede wrote:

Thank you very much for your help, Subbu. So now I ran exactly your two commands, but first, the build failed because it was missing |clang|. Do I assume correctly that the following dependency should be mentioned anywhere in the repository?

sudo apt-get -y install clang

I haven't used clang. I use the gcc toolchain. Sorry

• |error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option] |

gcc has the unused-but-set-variable warning that gets suppressed with that flag. See https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html

If you use clang, you will have to find the equivalent.

fatal error: 'GL/gl.h' file not found # include <GL/gl.h> ^~~~~~~~~

This is found in mesa-common-dev package which gets install automatically as a dependency for libgl1-mesa-dev.

• Additionally, I am getting a large number of 177 warnings, which are probably not so important?

If I were you, I would scan through the warnings on 64b compile just to make sure I am not missing anything important. Both int and pointer were 32b on 32b compile so one could force a pointer into int. But a pointer is 64b on 64bit compiles. Storing a pointer into a int is problematic.

Regards .. Subbu

Hi Subbu, thank you again! After installing `libgl1-mesa-dev`, the build process ran successfully, however it was still missing that clang flag.

My questions are resolved so far, but I believe that further people could benefit from the exact documentation of the necessary dependencies:

...

first, the build failed because it was missing `clang`. Do I assume correctly that the following dependency should be mentioned anywhere in the repository?

sudo apt-get -y install clang

I haven't used clang. I use the gcc toolchain. Sorry

Which exact packages do I have to install? The `platforms/unix/config/configure` script requires `clang` to be installed as noted above. At the moment I have installed `gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0` and `clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)`, but that clang version does not understand the `no-unused-but-set-variable` flag. Could you maybe refer to a specific package? :-)

I just read the `HowToBuild` file in the `build.linux*` directory. I installed the package string listed for Ubuntu, but the clang flag is still not recognized ...

Does the configure script not check for the presence of the OpenGL headers?

Am I just talking to an intelligent bot? :-) No, at least I did not found an error referring to this particular problem.

Ah, the bot should mention this :-)

@eliotmiranda My concrete problem was resolved, but it might be helpful for others to add some exact documentation of the dependencies needed for the build without using cygwin. Feel free to close if you think this is not important. :-)