From 0a8f63f1d2a2fda16db83eca37002ce8ed762ba1 Mon Sep 17 00:00:00 2001 From: Paul Brossier Date: Tue, 20 Nov 2018 22:52:24 +0100 Subject: [PATCH] [py] fix missing pre-processor output on win-amd64 --- python/lib/gen_external.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/python/lib/gen_external.py b/python/lib/gen_external.py index e9a93c65..1425c9b8 100644 --- a/python/lib/gen_external.py +++ b/python/lib/gen_external.py @@ -74,6 +74,18 @@ def get_preprocessor(): cpp_cmd = compiler.cc.split() cpp_cmd += ['-E'] + # On win-amd64 (py3.x), the default compiler is cross-compiling, from x86 + # to amd64 with %WIN_SDK_ROOT%\x86_amd64\cl.exe, but using this binary as a + # pre-processor generates no output, so we use %WIN_SDK_ROOT%\cl.exe + # instead. + if len(cpp_cmd) > 1 and 'cl.exe' in cpp_cmd[-2]: + plat = os.path.basename(os.path.dirname(cpp_cmd[-2])) + if plat == 'x86_amd64': + print('workaround on win64 to avoid empty pre-processor output') + cpp_cmd[-2] = cpp_cmd[-2].replace('x86_amd64', '') + elif True in ['amd64' in f for f in cpp_cmd]: + print('warning: not using workaround for', cpp_cmd[0], plat) + if not cpp_cmd: print("Warning: could not guess preprocessor, using env's CC") cpp_cmd = os.environ.get('CC', 'cc').split() -- 2.11.0