From 9762b1b9268bda395c2a0effb37c7a3b1bf51b6c Mon Sep 17 00:00:00 2001
From: Vincent Pelletier <vincent@nexedi.com>
Date: Fri, 3 Dec 2010 14:09:49 +0000
Subject: [PATCH] Add a before-configure hook for kumo.
Objective: disable kumo build on hosts with broken gcc, as we don't want to
build our own gcc (yet ?).
This is not used yet, but should be within a few hours.
git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41093 20353a03-c40f-0410-a6d1-a30d3c3de9de
---
buildout/hooks/kumo-hooks.py | 76 ++++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644 buildout/hooks/kumo-hooks.py
diff --git a/buildout/hooks/kumo-hooks.py b/buildout/hooks/kumo-hooks.py
new file mode 100644
index 0000000000..963e6680be
--- /dev/null
+++ b/buildout/hooks/kumo-hooks.py
@@ -0,0 +1,76 @@
+import os
+import sys
+import traceback
+from shutil import copy
+from subprocess import Popen, PIPE
+
+CONFIGURE_PATH = os.path.join('configure')
+CONFIGURE_BACKUP_PATH = CONFIGURE_PATH + '_disabled'
+# Fake configure, generating a fake Makefile which will create a marker file
+# instead of actually installing anything.
+# This is needed (?) to fetch --prefix from configure parameters, so we know
+# where to tell Makefile to put the dummy file.
+FAKE_CONFIGURE = '''#!%(python)s -S
+import os
+import sys
+print 'Configuration is disabled on this host because %%s'
+print 'Original configure file available at %(backup)s'
+prefix = None
+next = False
+for arg in sys.argv:
+ if next:
+ prefix = arg
+ break
+ if arg.startswith('--prefix'):
+ if arg.startswith('--prefix='):
+ _, prefix = arg.split('=', 1)
+ break
+ next = True
+if prefix is None:
+ raise '--prefix parameter not found'
+# Generate Makefile with proper prefix
+open('Makefile', 'w').write("""all:
+\techo 'make disabled, see configure'
+
+install:
+\ttouch %%%%s""" %%%% (
+ os.path.join(prefix, 'BUILD_DISABLED_BY_BUILDOUT'),
+))
+sys.exit(0)
+''' % {
+ 'backup': CONFIGURE_BACKUP_PATH,
+ 'python': sys.executable,
+}
+
+def pre_configure_hook(options, buildout):
+ gcc_executable = os.getenv('CC', 'gcc')
+ try:
+ gcc = Popen([gcc_executable, '-v'], stdout=PIPE, stderr=PIPE,
+ close_fds=True)
+ except OSError, (errno, _):
+ if errno == 2:
+ # No gcc installed, nothing to check
+ pass
+ else:
+ print 'Unexpected failure trying to detect gcc version'
+ traceback.print_exc()
+ else:
+ gcc.wait()
+ # Considered innocent until proven guilty.
+ error = None
+ for line in '\n'.join((gcc.stdout.read(), gcc.stderr.read())).splitlines():
+ if line.startswith('gcc version'):
+ if '4.1.1' in line and 'prerelease' in line:
+ # There is a bug in 4.1.1 prerelease (ie, as of mandriva
+ # 2007.0) g++ preventing kumo compilation from succeeding.
+ error = 'broken GCC version: %s' % (line, )
+ break
+ else:
+ print >>sys.stderr, 'GCC version could not be detected, ' \
+ 'building anyway'
+ if error is not None:
+ print 'Disabling build, with reason:', error
+ # Copy to preserver permission
+ copy(CONFIGURE_PATH, CONFIGURE_BACKUP_PATH)
+ open(CONFIGURE_PATH, 'w').write(FAKE_CONFIGURE % (error, ))
+
--
2.30.9