project('generatorcustom', 'c') creator = find_program('gen.py') catter = find_program('catter.py') gen = generator(creator, output: '@BASENAME@.h', arguments : ['@INPUT@', '@OUTPUT@']) hs = gen.process('res1.txt', 'res2.txt') allinone = custom_target('alltogether', input : hs, output : 'alltogether.h', command : [catter, '@INPUT@', '@OUTPUT@']) executable('proggie', 'main.c', allinone)