[Box Backup] Cygwin build
boxbackup at fluffy.co.uk
Thu Apr 15 09:47:17 BST 2004
On 15 Apr 2004, at 07:04, Paul Arch wrote:
> today I have been attempting to build box backup under cygwin, with
> success - getting the thing to build has been a little tricky, but I am
> getting close. So below are a few notes, and some questions :)
> Before I start, I must admit I have never programmed in c++ before, so
> I am
> in a little over my head when trying to debug some things ;)
Thanks for attempting this, it'd be nice to have it running on Cygwin.
> I have pretty much set the CYGWIN build environment/platform the same
> as if
> built under LINUX
> 1. Obviously there are no make options for CYGWIN environment, so I
> makebuildenv scripts the same as if the ENV was linux
In BoxPlatform.pm, make sure everything is set as for Linux. Make sure
$platform_define is set to PLATFORM_CYGWIN.
> 2. Need to define the following :
> #define PLATFORM_LINUX
> #define PLATFORM_BERKLEY_DB_NOT_SUPPORTED
> #define PLATFORM_KQUEUE_NOT_SUPPORTED
> I dont know where to set this up globally, could someone please
> advise the
> right way ?
In lib/common/BoxPlatform.h, add a section like this:
#define INFTIM -1
but put it *above* the PLATFORM_LINUX section (as it defines
PLATFORM_LINUX, so needs to get the contents of that section too.)
> 3. There were some 'missing' or extra files that needed to be included
> along the way:
> #include <stdint.h>
> #include <stdlib.h>
> #include <netinet/in.h>
> #include <sys/socket.h>
> #include <sys/stat.h>
> But this might of been something to do with me not using the
> 'makebuildenv' properly ? I dont know, I am no expert - I just
> figured out
> they needed to be included
> somewhere for something to work ;)
It's probably that Cygwin's include files include different include
files than other platforms. It'll probably be easiest to put these
#includes within the PLATFORM_CYGWIN BoxPlatform.h section.
> // This doesnt work :
> switch(::poll(&p, 1, (Timeout ==
> Complained about INFTIM unknown.
> So I did this (dont know what I am doing here ;) )
> switch(::poll(&p, 1, (Timeout == IOStream::TimeOutInfinite)))
> which allowed compile to continue
That won't work, as I'm sure you'll have guessed. INFTIM needs to be
-1, I added it to the BoxPlatform.h section above.
> ./lib/common/BoxTime.cpp :
> BoxTime.cpp: In function `box_time_t GetCurrentBoxTime()':
> BoxTime.cpp:66: error: call of overloaded
> `SecondsToBoxTime(u_int32_t)' is
> BoxTime.h:66: error: candidates are: box_time_t SecondsToBoxTime(long
> BoxTime.h:70: error: box_time_t SecondsToBoxTime(long
> unsigned int)
> make: *** [../../debug/lib/common/BoxTime.o] Error 1
> make: Leaving directory `/boxbackup-0.05/lib/common'
> make: *** [dep_modules] Error 2
> changed SecondsToBoxTime to return(1) - dont know whats going on here ?
> which allowed compile to continue
That's possibly me making a tiny mistake. Try changing the function to
ASSERT(sizeof(uint32_t) == sizeof(time_t));
but it does worry me that the u_int32_t definition isn't quite right on
Cygwin. But it could just be that the compiler is being totally
paranoid for some reason. See what happens.
> After all of the above (hopefully thats all I did ;) , I got from :
> $ make
> [blah blah blah ]
> $ cd ../../debug/bin/bbackupctl
> $ ls
> bbackupctl.exe bbackupctl.o
> $ bbackupctl.exe
> Usage: bbackupctl [-q] [-c config_file] <command>
> Commands are:
> sync -- start a syncronisation run now
> reload -- reload daemon configuration
> terminate -- terminate daemon now
> wait-for-sync -- wait until the next sync starts, then exit
> Sooo.... I will try building everything else, and then I will have a
> play !
> If people could offer advice where I can put these changes, and how to
> generate diffs, I would be more than happy to provide :)
Hopefully you'll just need minor changes to the BoxPlatform.* files,
and you can just send me a new version.
Unless Cygwin emulates UNIX filesystem behaviour, you may have problems
with some of the tests. You may need to set up a server on a UNIX
machine, and point bbackupd at it to test. This isn't ideal.
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