tce-load -i compiletc meson perl5 libgphoto2-dev gobject-introspection-dev libpeas-dev gexiv2-dev libraw-dev gst-plugins-base-dev gtk-doc libpeas-gir gst-plugins-base-gir gexiv2-gir

https://www.entangle-photo.org/download/sources/entangle-3.0.tar.xz

*** locale must be set ***

cd entangle-3.0

mkdir build
cd build

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" meson --prefix=/usr/local --localstatedir=/var --buildtype=plain ../ 

ninja [0m 19.72s]
sudo ninja install

FAILED: src/org.entangle_photo.Manager.tmp.metainfo.xml 
/usr/src/entangle-3.0/build-aux/metainfo-merge /usr/src/entangle-3.0/docs/releases ../src/org.entangle_photo.Manager.metainfo.xml src/org.entangle_photo.Manager.tmp.metainfo.xml
Traceback (most recent call last):
  File "/usr/src/entangle-3.0/build-aux/metainfo-merge", line 13, in <module>
    for line in fhin:
  File "/usr/local/lib/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 81: ordinal not in range(128)