Yesterday
I had a configure message about missing gtk+-3.0 but could not find that in apt-cache.
I had therefore set  GTK_FLAGS and GTK_LIBS as suggested on the assumption that it would work-around that error.
It obviously did not.

Today
I installed everything that included "gtk" using synaptic and that enabled a successful compile.

Thanks for your interest and all the good work that you and the team have done on this great tool.
Cheers
Ken

Am 2020-12-13 14:21, schrieb ken@shail.co.uk:

I can't build on Debian 10 amd64.
The Debian repository version works fine but I need to add some
modifications that I made to an earlier 32 bit version.
Using unmodified source, configure runs fine whichever version (1.34
to 1.37) I try,  but in make I get
CC      main/args.lo
gcc: error: 1: No such file or directory
make: *** [makefile:875: main/args.lo] Error 1
Leaving directory '<my path>/Downloads/geany-1-37.1'

Can you provide your changeset? The 32bit-64bit thing makes me curious.

Cheers,
Frank