https://github.com/PhotoFlare/photoflare
https://photoflare.io/
Quick, simple but powerful Cross Platform image editor.
v1.6.6 Community Edition

Development dependencies:
tce-load -i compiletc cmake bash yasm gettext-dev coreutils groff

Qt Problem and workaround:
    run qmake -version to determine qmake's $QTDIR variable
    mine said "Using Qt version 5.14.0 in /tmp/tcloop/qt-5.x-bin/usr/local/lib"

    [/tmp/qview/qView]{$?=0}Sat Aug 22 13:46:05 > qmake
    Could not find qmake spec 'linux-g++'.
    Error processing project file: /tmp/qview/qView/qView.pro

    Should says "Using Qt version 5.14.0 in /usr/local/lib"

    https://stackoverflow.com/questions/27524680/i-have-this-error-in-qt-creator-could-not-find-qmake-configuration-file-linux-g/33782609

I did tce-load -ic ./qt-5.x-bin.tcz (only this tcz, no other dependencies) to force one time copy to the file system for qmake and then got
    [/mnt/sdc1/source_pkgs]{$?=0}Sat Aug 22 14:00:58 > qmake --version
    QMake version 3.1
    Using Qt version 5.14.0 in /usr/local/lib

Development dependencies:
tce-load -i qt-5.x-dev graphicsmagick-dev.tcz

git clone https://github.com/PhotoFlare/photoflare.git

Photoflare.pre edit line 31 to correct path:
    INCLUDEPATH += /usr/local/include/GraphicsMagick
    
qmake Photoflare.pro
make
# make install # Before to enable it, PhotoFlare.pro need to be adjusted

dies at ... cannot get past
g++: fatal error: cannot read spec file ‘libgomp.spec’: No such file or directory
compilation terminated.
make: *** [Makefile:580: photoflare] Error 1

so I copied /usr/local/lib/libgomp.* to my PWD

make clean
make # did compile

test with
base norestore  tce-load -i graphics-KERNEL.tcz Xorg-7.7.tcz aterm.tcz flwm.tcz wbar.tcz

Runtime dependencies: photoflare.tcz.dep
qt-5.x-all.tcz
graphicsmagick.tcz
libtiff.tcz

find ./squashfs-root -exec touch -m --reference=/tmp/photoflare/squashfs-root/usr/local/bin/photoflare {} +

mksquashfs ./squashfs-root ./photoflare.tcz -noappend -no-xattrs
mksquashfs ./squashfs-root ./photoflare-doc.tcz -noappend -no-xattrs

submitqc --color --libs --fix --strip ./photoflare.tcz
submitqc --color --libs --fix --strip ./photoflare-doc.tcz

# get the extension files dates the same as tcz
for file in photoflare.tcz; do touch --no-create --reference=/tmp/photoflare/squashfs-root/usr/local/bin/photoflare $file; done
for file in photoflare.tcz.*; do touch --no-create --reference=photoflare.tcz $file; done
for file in photoflare-doc.tcz; do touch --no-create --reference=/tmp/photoflare/squashfs-root/usr/local/bin/photoflare $file; done
for file in photoflare-doc.tcz.*; do touch --no-create --reference=photoflare-doc.tcz $file; done

# set the permissions
for file in photoflare.*; do chmod 666 $file; done
for file in photoflare-doc.*; do chmod 666 $file; done

#tar all necessary and optional files, example:
tar cvzf ./photoflare.tar.gz ./photoflare/
tar cvzf ./photoflare-doc.tar.gz ./photoflare-doc/

save this file with name compile_photoflare