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