[Vm-dev] Minheadless VM flavour status update

[Denis Kudriashov]

Hi Ronie.

This is super cool.

I just compared size of VM: 1.3 mb vs 4 mb (current PharoVM). It is really
nice result.

2016-12-24 22:25 GMT+01:00 Ronie Salgado <roniesalg at gmail.com>:

>
> Hi all,
>
> I am happy to announce that my latest VM refactoring experiment is almost
> complete. I am only missing adding traditional style Makefiles to make
> Eliot happy ;), and making this work with MSVC.
>
> The minheadless is a VM variant that unifies a lot of the code for
> Windows, Linux and OS X. To the point that I am using the same CMake
> scripts for building on the three platforms.
>
> The minheadless VM is a completely headless by default VM, unless the
> configure script finds SDL2.
>
> If the configure script finds SDL2, and the legacy display interface is
> enabled(which is by default), then this VM will be built using SDL2 to
> implement the normal diplay primitives. The SDL2 backend work with normal
> Pharo and Squeak image.
>
> If SDL2  is not found by the configure script, or the legacy display
> primitives are disabled in the configure script, or the VM is started in
> headless mode, then the traditional display primitives are just going to be
> a /dev/null.
>
> Currently I am commiting this VM variant to the MinimalisticHeadless
> branch at: https://github.com/ronsaldo/opensmalltalk-vm/tree/
> MinimalisticHeadless
>
> For building using CMake it can be done in two ways:
>
> ------------------------------------
> Calling CMake directly
>
> mkdir build
> cmake .. -DCMAKE_BUILD_TYPE=<The build type> (or cmake-gui ..)
> make
>
> The supported build types are:
> - Debug
> - Assert
> - RelWithDebInfo
> - Release
>
> If you are on an x86_64 system and you want to build  32 bits version, you
> have to pass the -DBUILD_I386_VERSION=True option to cmake.
>
> mkdir build
> cmake .. (or cmake-gui ..)
> make
>
> ------------------------------------
> Using mvm style scripts
>
> Easy mode:
>
> cd build.minheadless.cmake/<x86 or x64>/vm_variant
> ./mvm
>
> A bit more complicated/flexible mode:
>
> This mvm will configure and build the vm for the four build types. This
> behavior was present on the mvm for Windows, so I am replicating it.
>
> In these same folders that are two other scripts: mvm_configure (calls
> cmake to only configure the build types), and mvm_configure_variant
>
> mvm_configure_variant is used to actually call cmake and configure the VM
> for building. The syntax of mvm_configure_variant is the following:
>
> mvm_configure_variant <BuildDirectory> <BuildType>
>
> Currently my workflow for using these scripts is the following with
> MSys/Cygwin/Linux:
>
> ./mvm_configure
> make -j8
>
> The makefile at build.minheadless.cmake/<x86 or x64>/vm_variant is only
> used for delegating to the makefiles created by CMake.
>
> ------------------------------------
> I am leaving some prebuilt Pharo VMs with the SDL2 backend for Windows for
> experimenting at: http://ronie.cl/files/vm/
>
> Using OSWindow with this VM requires loading the latest version of
> OSWindow by reloading the ConfigurationOfOSWindow manually in Monticello,
> and then doing ConfigurationOfOSWindow load. With this VM, there are
> finally no more duplicated events.
>
> My TODO list for this includes adding plain Makefile. BTW: during the
> following week I will continue working with Lowcode. I really need it
> working again.
>
> Happy longest/shortest day of the year
> Ronie
>
>
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