From: Brian Warner Date: Tue, 17 Jun 2008 20:41:32 +0000 (-0700) Subject: docs/debian.txt: add notes on how to build Tahoe on a debian system X-Git-Tag: allmydata-tahoe-1.2.0~84 X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/flags/reliability?a=commitdiff_plain;h=3127aa709ba2be72afd53ce69d6794ef92ce9664;p=tahoe-lafs%2Ftahoe-lafs.git docs/debian.txt: add notes on how to build Tahoe on a debian system --- diff --git a/docs/debian.txt b/docs/debian.txt new file mode 100644 index 00000000..05385e1e --- /dev/null +++ b/docs/debian.txt @@ -0,0 +1,77 @@ + += Debian Support = + +One convenient way to deploy a Tahoe grid is via debian packages. + +== Building Debian Packages == + +The Tahoe source tree comes with limited support for building debian packages +on a variety of Debian and Ubuntu platforms. For each supported platform, +there is a "deb-PLATFORM-head" target in the Makefile that will produce a +debian package from a darcs checkout, using a version number that is derived +from the most recent darcs tag, plus the total number of revisions present in +the tree (e.g. "1.1-r2678"). + +To create debian packages from a Tahoe tree, you will need some additional +tools installed. The canonical list of these packages is in the +"Build-Depends" clause of misc/sid/debian/control , and includes: + + build-essential + debhelper + cdbs + python-central + python-setuptools + python + python-dev + python-twisted-core + +In addition, to use the "deb-PLATFORM-head" target, you will also need the +"debchange" utility from the "devscripts" package, and the "fakeroot" package. + +Some recent platforms can be handled by using the targets for the previous +release, for example if there is no "deb-hardy-head" target, try building +"deb-gutsy-head" and see if the resulting package will work. + +Note that we haven't tried to build source packages (.orig.tar.gz + dsc) yet, +and there are no such source packages in our APT repository. + +== Using Pre-Built Debian Packages == + +The allmydata.org site hosts an APT repository with debian packages that are +built after each checkin. The following wiki page describes this repository: + + http://allmydata.org/trac/tahoe/wiki/DownloadDebianPackages + +The allmydata.org APT repository also includes debian packages of support +libraries, like Foolscap, zfec, pycryptopp, and everything else you need that +isn't already in debian. + +== Building From Source on Debian Systems == + +Many of Tahoe's build dependencies can be satisfied by first installing +certain debian packages: simplejson is one of these. Some debian/ubuntu +platforms do not provide the necessary .egg-info metadata with their +packages, so the Tahoe build process may not believe they are present. Some +Tahoe dependencies are not present in most debian systems (such as foolscap +and zfec): debs for these are made available in the APT repository described +above. + +The Tahoe build process will acquire (via setuptools) most of the libraries +that it needs to run and which are not already present in the build +environment). + +We have observed occasional problems with this acquisition process. In some +cases, setuptools will only be half-aware of an installed debian package, +just enough to interfere with the automatic download+build of the dependency. +For example, on some platforms, if Nevow-0.9.26 is installed via a debian +package, setuptools will believe that it must download Nevow anyways, but it +will insist upon downloading that specific 0.9.26 version. Since the current +release of Nevow is 0.9.31, and 0.9.26 is no longer available for download, +this will fail. + +The Tahoe source tree currently ships with a directory full of tarballs of +dependent libraries (misc/dependencies/), to enable a "desert-island build". +There are plans to remove these tarballs from the source repository (but +still provide a way to get Tahoe source plus dependencies). This Nevow-0.9.26 +-type problem can be mitigated by putting the right dependency tarball in +misc/dependencies/ .