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3.2.x 3.2.x@376427 3.2.x@615234 3.2.0-experimental-publisher 3.2.0-experimental-publisher@165475 3.2.0-experimental-publisher@615234 3.4.x 3.5.x branch-2-7-7 branch-2-7-7@89924 branch-2-7-7@615234 branch-3-0-3 branch-3-0-3@98932 branch-3-0-3@615234 grisha grisha@85141 grisha@615234 jgallacher jgallacher@615234 master nlehuen nlehuen@615234 p3 release-2-6-4 release-2-6-4@86761 release-2-6-4@615234 trunk@615234 unlabeled-1.8.2 unlabeled-1.8.2@89924 unlabeled-1.8.2@615234 unlabeled-1.10.2 unlabeled-1.10.2@89143 unlabeled-1.10.2@615234 unlabeled-1.34.2 unlabeled-1.34.2@89228 unlabeled-1.34.2@615234
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This is the Mod_Python README file. It consists of the following parts: 1. Getting Started 2. New in 3.0 3. Migrating from Mod_Python 2.7.8 4. OS Hints 1. Getting Started See the HTML documentation in the doc-html directory for installation instructions and documentation. If you can't read instructions: $ ./configure --with-apxs=/usr/local/apache/sbin/apxs $ make $ su # make install Edit httpd.conf like instructions at the end of "make install" tell you. If the above worked - read the tutorial in the doc directory. 2. New in 3.0 o Compatibility with Apache Httpd 2.0 and Python 2.2. (Apache Httpd 1.3 and versions of Python prior to 2.2 will not work.) o Support for filters (HTTP content only). o Support for connection handlers allowing for implementation of layer 4 protocols. o Python*Handler directives can now be assigned to specific file extensions. o The publisher handler supports default module and method names allowing for cleaner more intuitive url's. o A basic test suite. o Many other miscellaneous and internal changes. 3. Migrating from Mod_Python 2.7.8. First, this version of Mod_Python requires Apache Httpd 2, and Python 2.2. (Python 2.2.2 and Apache Httpd 2.0.43 are latest at the time of this writing). Please make sure you read the appropriate docs to understand the impact of upgrading both of those, especially upgrading httpd. Check out http://httpd.apache.org/docs-2.0/upgrading.html. Some changes in Mod_Python may impact your existing code: When configuring/compiling, note that --with-python argument of ./configure now takes the path to a Python executable, rather than a directory where the source is. The option of having a source directory is no longer supported. If you want a separate version of Python for use with mod_python, you must have it installed. Apache 2 will use threads by default, and so will Python. The old warnings about threads no longer apply, for the most part you shouldn't worry about it. The user name is now req.user instead of req.connection.user. There is no need for the req.send_http_header() method. It is still there for backwards compatibility, but it is a noop. Httpd automatically sends out headers as soon as the first byte of output comes through. The request object no longer has a _req member. _req was undocumented and shouldn't have been used, but if you were using it anyway, your code will break. It appears that req.server.port is 0 always, but if you need the local port number, you can look at req.connection.local_addr. 4. OS Hints FreeBSD: Apache has to be compiled with threads, even if using the prefork MPM (recommended). In the ports collection, edit the Makefile to add --enable-threads in the CONFIGURE_ARGS section. This has been tested on FreeBSD 4.7; it is possible that earlier versions of FreeBSD may have issues with httpd's use of threads. Mac OS X/Darwin: (Disclaimer: I am not an expert on Darwin, if you see something incorrect or have suggestions, please mail the dev list. This worked for me on OS X 10.2.2, fink Python 2.2.1 and httpd 2.0.43 compiled from source) 1. Libtool that comes with OS X 10.2.2 or earlier is buggy. Here is a patch to fix it. --- /usr/bin/glibtool.orig Fri Nov 15 16:14:59 2002 +++ /usr/bin/glibtool Fri Nov 15 16:16:36 2002 @@ -181,7 +181,7 @@ old_archive_from_expsyms_cmds="" # Commands used to build and install a shared archive. -archive_cmds="\$nonopt \$(test \\\"x\$module\\\" = xyes && echo -bundle || echo -dynamiclib) \$allow_undefined_flag -o \$lib \$libobjs \$deplibs\$linker_flags -install_name \$rpath/\$soname \$verstring" +archive_cmds="\$nonopt \$(test x\$module = xyes && echo -bundle || echo -dynamiclib -install_name \$rpath/\$soname) \$allow_undefined_flag -o \$lib \$libobjs \$deplibs\$linker_flags \$verstring" archive_expsym_cmds="" postinstall_cmds="" postuninstall_cmds="" --- /usr/share/aclocal/libtool.m4.orig Fri Nov 15 16:18:23 2002 +++ /usr/share/aclocal/libtool.m4 Fri Nov 15 16:18:45 2002 @@ -1580,7 +1580,7 @@ # FIXME: Relying on posixy $() will cause problems for # cross-compilation, but unfortunately the echo tests do not # yet detect zsh echo's removal of \ escapes. - archive_cmds='$nonopt $(test "x$module" = xyes && echo -bundle || echo -dynamiclib) $allow_undefined_flag -o $lib $libobjs $deplibs$linker_flags -install_name $rpath/$soname $verstring' + archive_cmds='$nonopt $(test x$module = xyes && echo -bundle || echo -dynamiclib -install_name $rpath/$soname) $allow_undefined_flag -o $lib $libobjs $deplibs$linker_flags $verstring' # We need to add '_' to the symbols in $export_symbols first #archive_expsym_cmds="$archive_cmds"' && strip -s $export_symbols' hardcode_direct=yes Note that the Fink libtool (1.4.2-5) has a bug too. The Fink libtool is half way there in that it will work with gcc2, but gcc3 does not allow -install_name without -dynamiclib. I don't provide a patch for Fink libtool since it's so easy to just fix it by manually editing the file. 2. Now that libtool situation is fixed, rebuild httpd. Make sure to rerun ./buildconf before ./configure. Also make sure --enable-so is specified as argument to ./configure. 3. On Darwin, libpython cannot be linked statically with mod_python using libtool. libpython has to be a dynamic shared object. The Python distribution does not provide a way of building libpython as a shared library, but the Fink Python distribution comes with one (/sw/lib/python2.2/config/libpython2.2.dylib), so the easiest thing is to install Python from Fink (fink.sourceforge.net). 4. Now configure, build, install mod_python like you normally would: ./configure --with-apxs=/where/ever/apxs make (su) make install 5. You are not out of the woods yet. Python has a lot of its built-in modules as shared libraries (or mach-o bundles to be precise). They are linked with "--bundle_loader python.exe", which means that many symbols are expected to be defined in the executable loading the bundle. Such would not be the case when the module is loaded from within mod_python, and therefore you will get "undefined symbol" errors when trying to import a built-in module, e.g. "time". I don't know what the *right* solution for this is, but here is a trick that works: define DYLD_FORCE_FLAT_NAMESPACE environment variable prior to launching httpd.