tce-load -i compiletc python3.6-dev ffmpeg4-dev frei0r-plugins-dev swig libexif-dev libsamplerate-dev SDL-dev

https://github.com/mltframework/mlt/releases/download/v6.20.0/mlt-6.20.0.tar.gz

cd mlt-6.20.0

CC="gcc -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var --swig-languages=python --enable-gpl --enable-gpl3 --disable-gtk2

find . -name config.mak -type f -exec sed -i 's/-O2//g' {} \;
find . -name Makefile.PL -type f -exec sed -i 's/-O2 -g//g' {} \;

edit config.mak
OPTIMISATIONS= -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe

make [0m 55.34s]
sudo make install

does not install python bindings

Found gcc version 9.2.0
Configuring framework:
Configuring modules:
Configuring modules/avformat:
Configuring modules/core:
Configuring modules/decklink:
Configuring modules/feeds:
Configuring modules/frei0r:
Configuring modules/jackrack:
Package jack was not found in the pkg-config search path.
Perhaps you should add the directory containing `jack.pc'
to the PKG_CONFIG_PATH environment variable
No package 'jack' found
- jackrack not found: disabling
- ladspa not found; disabling
Configuring modules/kdenlive:
Configuring modules/linsys:
Configuring modules/lumas:
- not explicitly enabled: disabling
Configuring modules/motion_est:
Configuring modules/ndi:
- NDI SDK not found: disabling
Configuring modules/normalize:
Configuring modules/oldfilm:
Configuring modules/opencv:
- not explicitly enabled: disabling
Configuring modules/opengl:
- movit not found: disabling
Configuring modules/plus:
- libebur128 not found: using internal libebur128
Configuring modules/plusgpl:
Configuring modules/qt:
./configure: line 43: qmake: not found
- Libexif found, enabling auto rotate
- Qt not found - disabling
Configuring modules/resample:
Configuring modules/rtaudio:
Configuring modules/rubberband:
- rubberband not found: disabling
Configuring modules/sdl:
- SDL development libs not found: disabling
Configuring modules/sdl2:
 - using SDL version 2.0.9
Configuring modules/sox:
- sox not found: disabling
Configuring modules/swfdec:
- swfdec not found: disabling
Configuring modules/vid.stab:
- vid.stab not found: disabling
Configuring modules/videostab:
Configuring modules/vmfx:
Configuring modules/vorbis:
Configuring modules/xine:
Configuring modules/xml:
Configuring mlt++:
Configuring swig:
GPLv3 license used