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cffi: Use the distutils preprocessor when available #179

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cffi: Use the distutils preprocessor when available #179

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15 changes: 8 additions & 7 deletions make_cffi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -40,23 +40,24 @@
# environment variables like CC.
distutils.sysconfig.customize_compiler(compiler)

# Distutils doesn't set compiler.preprocessor, so invoke the preprocessor
# manually.
# Distutils doesn't always set compiler.preprocessor, so invoke the
# preprocessor manually when needed.
args = getattr(compiler, "preprocessor", None)
if compiler.compiler_type == "unix":
# Using .compiler respects the CC environment variable.
args = [compiler.compiler[0]]
if not args:
# Using .compiler respects the CC environment variable.
args = [compiler.compiler[0], "-E"]
args.extend(
[
"-E",
"-DZSTD_STATIC_LINKING_ONLY",
"-DZDICT_STATIC_LINKING_ONLY",
]
)
elif compiler.compiler_type == "msvc":
args = [compiler.cc]
if not args:
args = [compiler.cc, "/EP"]
args.extend(
[
"/EP",
"/DZSTD_STATIC_LINKING_ONLY",
"/DZDICT_STATIC_LINKING_ONLY",
]
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