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Commit108e0e2

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setupext: support using environment variables for dependencies
On Windows, without Conda or the libraries being in default locations,matplotlib has problems finding freetype and qhull. Add ultimatefallback solutions using very specific environment variables named`{FREETYPE,QHULL}_{INCLUDE,LIBRARY}_DIRS`.
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‎setupext.py‎

Lines changed: 15 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -257,7 +257,7 @@ def get_pkg_config():
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defpkg_config_setup_extension(
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ext,package,
260-
atleast_version=None,alt_exec=None,default_libraries=()):
260+
atleast_version=None,alt_exec=None,envprefix=None,default_libraries=()):
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"""Add parameters to the given *ext* for the given *package*."""
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# First, try to get the flags from pkg-config.
@@ -295,6 +295,13 @@ def pkg_config_setup_extension(
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conda_env_path=Path(conda_env_path)
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ext.include_dirs.append(str(conda_env_path/"Library/include"))
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ext.library_dirs.append(str(conda_env_path/"Library/lib"))
298+
elifenvprefix:
299+
env_include=os.getenv(envprefix+'_INCLUDE_DIRS')
300+
ifenv_include:
301+
ext.include_dirs.extend(env_include.split(';')))
302+
env_library_dirs=os.getenv(envprefix+'_LIBRARY_DIRS')
303+
ifenv_library_dirs:
304+
ext.library_dirs.extend(env_include.split(';')))
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# Default linked libs.
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ext.libraries.extend(default_libraries)
@@ -585,6 +592,7 @@ def add_flags(cls, ext):
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ext,'freetype2',
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atleast_version='9.11.3',
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alt_exec=['freetype-config'],
595+
envprefix='FREETYPE',
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default_libraries=['freetype'])
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ext.define_macros.append(('FREETYPE_BUILD_TYPE','system'))
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else:
@@ -755,6 +763,12 @@ class Qhull(SetupPackage):
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defadd_flags(cls,ext):
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ifoptions.get("system_qhull"):
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ext.libraries.append("qhull_r")
766+
env_include=os.getenv('QHULL_INCLUDE_DIRS')
767+
ifenv_include:
768+
ext.include_dirs.extend(env_include.split(';')))
769+
env_library_dirs=os.getenv('QHULL_LIBRARY_DIRS')
770+
ifenv_library_dirs:
771+
ext.library_dirs.extend(env_include.split(';')))
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else:
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cls._extensions_to_update.append(ext)
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