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setup.py: Windows openPMD_CMAKE_... Env Vars #1896

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Merged
ax3l merged 2 commits into from
Jun 27, 2026
Merged

setup.py: Windows openPMD_CMAKE_... Env Vars #1896

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`setup.py`: Windows `openPMD_CMAKE_...` Env Vars
ax3l Jun 24, 2026
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Flake8: Chop off 1 char
ax3l Jun 25, 2026
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22 changes: 16 additions & 6 deletions setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -171,13 +171,23 @@ def build_extension(self, ext):

# extra CMake arguments
extra_cmake_args = []
# Pass openPMD_CMAKE_<CMakeVar>=<value> environment variables through as -D
# flags. Windows environment variable are all CAPS, so also accept the
# all-caps variant of the prefix, then the openPMD_ CMake option names are case
# sensitive, so restore the "openPMD_" prefix that upper-casing would destroy.
# All suffixes of our options are luckily ..._ALL_CAPS anyway.
extra_cmake_args_prefix = "openPMD_CMAKE_"
for k, v in os.environ.items():
extra_cmake_args_prefix = "openPMD_CMAKE_"
if k.startswith(extra_cmake_args_prefix) and \
len(k) > len(extra_cmake_args_prefix):
extra_cmake_args.append("-D{0}={1}".format(
k[len(extra_cmake_args_prefix):],
v))
if k.startswith(extra_cmake_args_prefix):
cmake_var = k[len(extra_cmake_args_prefix):]
elif k.startswith(extra_cmake_args_prefix.upper()):
cmake_var = k[len(extra_cmake_args_prefix):]
if cmake_var.startswith("OPENPMD_"):
cmake_var = "openPMD_" + cmake_var[len("openPMD_"):]
else:
continue
if cmake_var:
extra_cmake_args.append("-D{0}={1}".format(cmake_var, v))

# https://cmake.org/cmake/help/v3.0/command/if.html
if openPMD_USE_MPI.upper() in ['1', 'ON', 'TRUE', 'YES']:
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