diff options
Diffstat (limited to 'mesonbuild/backend/ninjabackend.py')
| -rw-r--r-- | mesonbuild/backend/ninjabackend.py | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/mesonbuild/backend/ninjabackend.py b/mesonbuild/backend/ninjabackend.py index 1686a5d..08fe092 100644 --- a/mesonbuild/backend/ninjabackend.py +++ b/mesonbuild/backend/ninjabackend.py @@ -86,8 +86,26 @@ else: execute_wrapper = [] rmfile_prefix = ['rm', '-f', '{}', '&&'] -# a conservative estimate of the command-line length limit on windows -rsp_threshold = 4096 +def get_rsp_threshold(): + '''Return a conservative estimate of the commandline size in bytes + above which a response file should be used. May be overridden for + debugging by setting environment variable MESON_RSP_THRESHOLD.''' + + if mesonlib.is_windows(): + # Usually 32k, but some projects might use cmd.exe, + # and that has a limit of 8k. + limit = 8192 + else: + # On Linux, ninja always passes the commandline as a single + # big string to /bin/sh, and the kernel limits the size of a + # single argument; see MAX_ARG_STRLEN + limit = 131072 + # Be conservative + limit = limit / 2 + return int(os.environ.get('MESON_RSP_THRESHOLD', limit)) + +# a conservative estimate of the command-line length limit +rsp_threshold = get_rsp_threshold() # ninja variables whose value should remain unquoted. The value of these ninja # variables (or variables we use them in) is interpreted directly by ninja |