Changes between Version 6 and Version 7 of mycroft_mark-2_gui_qt5.11


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Timestamp:
04/15/20 20:16:37 (2 years ago)
Author:
admin
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  • mycroft_mark-2_gui_qt5.11

    v6 v7  
    11== Mycroft Mark II - GUI using Qt 5.12 LTS ==
     2
     3=== Building with distcc ===
     4The Pi is not the fastest machine and it has limited memory so one can not build for example qtwebengine locally.
     5To use distcc (I have a cluster of 3 gentoo servers for that) I installed a proper toolchain on the hosts using gentoos crossdev with the proper versions for the raspian buster:
     6* crossdev --g 8.3.0-r1 --l 2.28-r6 -t arm-linux-gnueabihf
     7I could not really make distcc work in a "regular" way so I used the good old wrapper method:
     8* cd /usr/lib/distcc
     9* sudo mkdir bin
     10* cd bin
     11* sudo nano arm-linux-gnueabihf-wrapper
     12{{{
     13#!/bin/bash
     14exec /usr/lib/distcc/bin/arm-linux-gnueabihf-g${0:$[-2]} "$@"
     15}
     16* sudo chmod a+x arm-linux-gnueabihf-wrapper
     17* sudo ln -s arm-linux-gnueabihf-wrapper c++
     18* sudo ln -s arm-linux-gnueabihf-wrapper cc
     19* sudo ln -s arm-linux-gnueabihf-wrapper g++
     20* sudo ln -s arm-linux-gnueabihf-wrapper gcc
     21* sudo ln -s ../../../bin/distcc arm-linux-gnueabihf-g++
     22* sudo ln -s ../../../bin/distcc arm-linux-gnueabihf-g++-8
     23* sudo ln -s ../../../bin/distcc arm-linux-gnueabihf-gcc
     24* sudo ln -s ../../../bin/distcc arm-linux-gnueabihf-gcc-8
     25* sudo ls -la
     26should look like that:
     27{{{
     28drwxr-xr-x 2 root root 4096 Apr 15 21:03 .
     29drwxr-xr-x 3 root root 4096 Apr 14 22:05 ..
     30lrwxrwxrwx 1 root root   19 Apr 14 22:12 arm-linux-gnueabihf-g++ -> ../../../bin/distcc
     31lrwxrwxrwx 1 root root   19 Apr 14 22:12 arm-linux-gnueabihf-g++-8 -> ../../../bin/distcc
     32lrwxrwxrwx 1 root root   19 Apr 14 22:12 arm-linux-gnueabihf-gcc -> ../../../bin/distcc
     33lrwxrwxrwx 1 root root   19 Apr 14 22:12 arm-linux-gnueabihf-gcc-8 -> ../../../bin/distcc
     34-rwxr-xr-x 1 root root   74 Apr 14 22:09 arm-linux-gnueabihf-wrapper
     35lrwxrwxrwx 1 root root   27 Apr 14 22:13 c++ -> arm-linux-gnueabihf-wrapper
     36lrwxrwxrwx 1 root root   27 Apr 14 22:13 cc -> arm-linux-gnueabihf-wrapper
     37lrwxrwxrwx 1 root root   27 Apr 14 22:13 g++ -> arm-linux-gnueabihf-wrapper
     38lrwxrwxrwx 1 root root   27 Apr 14 22:13 gcc -> arm-linux-gnueabihf-wrapper
     39}}}
     40to use distcc to build just set $PATH so that it contains /usr/lib/distcc/bin first:
     41* export PATH=/usr/lib/distcc/bin:$PATH
     42add the build-host to the /etc/distcc/hosts
     43* nano /etc/distcc/hosts
     44{{{
     45# Add a list of hostnames in one line, seperated by spaces, here.
     46192.168.14.70 192.168.14.5
     47}}}
     48then just call gcc or make.
     49==== test that distcc works ====
     50* cd ~
     51* mkdir distcc_test
     52* cd distcc_test
     53* nano main.c
     54with the content:
     55{{{
     56#include <stdio.h>
     57 
     58int main() {
     59    printf("Hello distcc!\n");
     60    return 0;
     61}
     62set distcc messages to verbose:
     63* export DISTCC_VERBOSE=1
     64make sure that you have /usr/lib/distcc/bin in the begining of the PATH (see above)
     65* gcc -c main.c -o main.o
     66you should see a lot of messages from distcc (look for something like
     67}}}
    268
    369=== Build QT 5.12 LTS for eglfs ===