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-rw-r--r--Lib/distutils/command/build.py2
-rw-r--r--Lib/distutils/sysconfig.py7
-rw-r--r--Misc/NEWS.d/next/Library/2019-04-18-16-10-29.bpo-28552.MW1TLt.rst4
3 files changed, 11 insertions, 2 deletions
diff --git a/Lib/distutils/command/build.py b/Lib/distutils/command/build.py
index c6f52e61e1..a86df0bc7f 100644
--- a/Lib/distutils/command/build.py
+++ b/Lib/distutils/command/build.py
@@ -116,7 +116,7 @@ class build(Command):
self.build_scripts = os.path.join(self.build_base,
'scripts-%d.%d' % sys.version_info[:2])
- if self.executable is None:
+ if self.executable is None and sys.executable:
self.executable = os.path.normpath(sys.executable)
if isinstance(self.parallel, str):
diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
index a3494670db..570a612d1b 100644
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -28,7 +28,12 @@ BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
if "_PYTHON_PROJECT_BASE" in os.environ:
project_base = os.path.abspath(os.environ["_PYTHON_PROJECT_BASE"])
else:
- project_base = os.path.dirname(os.path.abspath(sys.executable))
+ if sys.executable:
+ project_base = os.path.dirname(os.path.abspath(sys.executable))
+ else:
+ # sys.executable can be empty if argv[0] has been changed and Python is
+ # unable to retrieve the real program name
+ project_base = os.getcwd()
# python_build: (Boolean) if true, we're either building Python or
diff --git a/Misc/NEWS.d/next/Library/2019-04-18-16-10-29.bpo-28552.MW1TLt.rst b/Misc/NEWS.d/next/Library/2019-04-18-16-10-29.bpo-28552.MW1TLt.rst
new file mode 100644
index 0000000000..2aa30c98c4
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-04-18-16-10-29.bpo-28552.MW1TLt.rst
@@ -0,0 +1,4 @@
+Fix :mod:`distutils.sysconfig` if :data:`sys.executable` is ``None`` or an
+empty string: use :func:`os.getcwd` to initialize ``project_base``. Fix
+also the distutils build command: don't use :data:`sys.executable` if it is
+``None`` or an empty string.