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project('very long command lines', 'c')
# Get the current system's commandline length limit.
if build_machine.system() == 'windows'
# Various limits on windows:
# cmd.exe: 8kb
# CreateProcess: 32kb
limit = 32767
# NOTE: filename limit is 260 characters unless
# 1. Python >= 3.6 is being used
# 2. Windows 10 registry has been edited to enable long pathnaems
# ninja backend uses absolute filenames, so we ensure they don't exceed 260.
elif build_machine.system() == 'cygwin'
# cygwin-to-win32: see above
# cygwin-to-cygwin: no limit?
# Cygwin is slow, so only test it lightly here.
limit = 8192
else
# ninja passes whole line as a single argument, for which
# the limit is 128k as of Linux 2.6.23. See MAX_ARG_STRLEN.
# BSD seems similar, see https://www.in-ulm.de/~mascheck/various/argmax
limit = 131072
endif
# Now exceed that limit, but not so far that the test takes too long.
namelen = 260
nfiles = 50 + limit / namelen
message('Expected link commandline length is approximately ' + '@0@'.format((nfiles * (namelen+28))))
seq = run_command('name_gen.py', nfiles.to_string(), meson.build_root()).stdout().strip().split('\n')
sources = []
codegen = find_program('codegen.py')
i=0
foreach name : seq
sources += custom_target('codegen' + i.to_string(),
command: [codegen, i.to_string(), '@OUTPUT@'],
output: name + '.c')
i+=1
endforeach
shared_library('sharedlib', sources)
static_library('staticlib', sources)
executable('app', 'main.c', sources)
# Also test short commandlines to make sure that doesn't regress
shared_library('sharedlib0', sources[0])
static_library('staticlib0', sources[0])
executable('app0', 'main.c', sources[0])
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