From 7ee7b487b018a7092c9e15389e6b231e7c0574c4 Mon Sep 17 00:00:00 2001
From: Christoph Groth <christoph.groth@cea.fr>
Date: Mon, 2 Sep 2013 17:19:06 +0200
Subject: [PATCH] setup.py: only create empty build.conf when actually building
---
setup.py | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/setup.py b/setup.py
index 709ca705..8d3964a6 100755
--- a/setup.py
+++ b/setup.py
@@ -55,6 +55,14 @@ kwant_dir = os.path.dirname(os.path.abspath(__file__))
class kwant_build_ext(build_ext):
def run(self):
+ if not config_file_present:
+ # Create an empty config file if none is present so that the
+ # extensions will not be rebuilt each time. Only depending on the
+ # config file if it is present would make it impossible to detect a
+ # necessary rebuild due to a deleted config file.
+ with open(CONFIG_FILE, 'w') as f:
+ f.write('# Created by setup.py - feel free to modify.\n')
+
try:
build_ext.run(self)
except (DistutilsError, CCompilerError):
@@ -283,7 +291,7 @@ def extensions():
Extension. possibly after replacing ".pyx" with ".c" if Cython is not to be
used."""
- global build_summary
+ global build_summary, config_file_present
build_summary = []
#### Add components of Kwant without external compile-time dependencies.
@@ -313,8 +321,9 @@ def extensions():
with open(CONFIG_FILE) as f:
config.readfp(f)
except IOError:
- with open(CONFIG_FILE, 'w') as f:
- f.write('# Created by setup.py - feel free to modify.\n')
+ config_file_present = False
+ else:
+ config_file_present = True
kwrds_by_section = {}
for section in config.sections():
--
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