[PATCH v2] Allow to override sync source

[Jan Kiszka <jan.kiszka@siemens.com>]

Avi Kivity wrote:
> Jan Kiszka wrote:
>> In order to allow sync'ing the kmod dir against arbitrary kernels trees,
>> extend the sync script to accept alternative paths and adjust the
>> Makefile accordingly.
>>
>> @@ -17,6 +17,7 @@ ORIGMODDIR = $(patsubst %/build,%/kernel,$(KERNELDIR))
>>  
>>  rpmrelease = devel
>>  
>> +KVM_VERSION = kvm-devel
>>  LINUX = ./linux-2.6
>>   
> 
> You're overriding ./configure here.  What was the motivation?

I missed that this is provided via configure - dropped again.

> 
>>  
>> -version = 'kvm-devel'
>> -if len(sys.argv) >= 2:
>> -    version = sys.argv[1]
>> +parser = OptionParser(usage='usage: %prog [-v version][-l linuxkernel]')
>> +parser.add_option('-v', action='store', type='string', dest='version')
>> +parser.add_option('-l', action='store', type='string', dest='linux')
>>   
> 
> Please add help, and spaces around '='.

OK.

> 
>> +(options, args) = parser.parse_args()
>>  
>> +version = 'kvm-devel'
>>  linux = 'linux-2.6'
>>  
>> +if options.version:
>> +    version = options.version
>> +if options.linux:
>> +    linux = options.linux
>> +
>>   
> 
> Can replace this with set_defaults().
> 

Nice. Done below.

---------->

In order to allow sync'ing the kmod dir against arbitrary kernels trees,
extend the sync script to accept alternative paths and adjust the
Makefile accordingly.

Changes in v2:
 - drop KVM_VERSION override
 - make use of set_defaults
 - option help texts

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---

 Makefile |    2 +-
 sync     |   16 +++++++++++-----
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index a8e8e0b..8bd5b9b 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ include $(MAKEFILE_PRE)
 .PHONY: sync
 
 sync:
-	./sync $(KVM_VERSION)
+	./sync -v $(KVM_VERSION) -l $(LINUX)
 
 install:
 	mkdir -p $(DESTDIR)/$(INSTALLDIR)
diff --git a/sync b/sync
index 4a89296..f3f4d6a 100755
--- a/sync
+++ b/sync
@@ -1,6 +1,7 @@
 #!/usr/bin/python
 
 import sys, os, glob, os.path, shutil, re
+from optparse import OptionParser
 
 glob = glob.glob
 
@@ -8,11 +9,16 @@ def cmd(c):
     if os.system(c) != 0:
         raise Exception('command execution failed: ' + c)
 
-version = 'kvm-devel'
-if len(sys.argv) >= 2:
-    version = sys.argv[1]
-
-linux = 'linux-2.6'
+parser = OptionParser(usage = 'usage: %prog [-v VERSION][-l LINUX]')
+parser.add_option('-v', action = 'store', type = 'string', dest = 'version', \
+                  help = 'kvm-kmod release version', default = 'kvm-devel')
+parser.add_option('-l', action = 'store', type = 'string', dest = 'linux', \
+                  help = 'Linux kernel tree to sync from', \
+                  default = 'linux-2.6')
+parser.set_defaults()
+(options, args) = parser.parse_args()
+version = options.version
+linux = options.linux
 
 _re_cache = {}