View source for Python

{| style="text-align: left; background-color: AliceBlue;"
|-valign="top"
!Download Source:
| http://www.python.org/ftp/python/{{Python-Version}}/Python-{{Python-Version}}.tar.xz
|-valign="top"
!Alternate Requierd Patch (For Multilib):
| Refer to https://www.williamfeely.info/download/lfs-multilib/Python-2.7.6-multilib-1.patch
|-valign="top"
!Required Patch (For Multilib):
| Bad link: http://svn.cross-lfs.org/svn/repos/patches/Python/Python-{{Python-Version}}-multilib-1.patch
|-valign="top"
|}

----

{{Package-Introduction|Python is a dynamic object-oriented programming language that can be used for many kinds of software development. It offers strong support for integration with other languages and tools, comes with extensive standard libraries, and can be learned in a few days. Many Python programmers report substantial productivity gains and feel the language encourages the development of higher quality, more maintainable code.|http://www.python.org/}}

== Dependencies ==

=== Optional ===
* [[OpenSSL]]
* [[Tk]]
* [[GDBM]]
* [[X Window System]]
* [[SQLite3]]
* [[Libffi]]
* [[Bluez]]

== Non-Multilib ==

{{Note|If the test suite ('''make test''') fails because it cannot find python's math library, then you will need to install python before you can run the tests.}}

{{Note|If the installation of python fails, rebuild python. It appears to be somewhat inconsistant with regards to whether it works or not. The ''-fwrapv'' flag used with make attempts to fixes this. If it still doesn't complete '''make install''' without failing, then use '''make -i install''' instead ('''-i''' tells '''make''' to ignore errors). It's less desirable, but it should work. The other option is to run '''make install''' twice. The second time around it locates the installed python libraries it needs for the installation and is able to complete it.}}

Compile the package:

 sed -i "s@/usr/X11R6@${XORG_PREFIX}@g" setup.py &&
 ./configure --prefix=/usr --enable-shared &&
 make

Install the package

 make install

=== Command Explanations ===

''--enable-shared'': Enables the building of shared libraries.

== Multilib ==

=== 32Bit ===

Compile the package:

 sed -i "s@/usr/X11R6@${XORG_PREFIX}@g" setup.py &&
 sed -i 's@/lib64@/lib@g' Modules/_ctypes/libffi/m4/libtool.m4 \
     Modules/_ctypes/libffi/configure setup.py &&
 sed -i "s/'lib64'/'lib'/g" setup.py &&
 CC="gcc ${BUILD32}" CXX="g++ ${BUILD32}" ./configure --prefix=/usr \
     --enable-shared &&
 make

Install the package

 make install &&
 mv -v /usr/bin/python{,-32} &&
 mv -v /usr/bin/python2{,-32} &&
 mv -v /usr/bin/python{{Python-Version2}}{,-32} &&
 mv -v /usr/include/python{{Python-Version2}}/pyconfig{,-32}.h &&
 ln -sfv python2.7-32 /usr/bin/python2-32 &&
 ln -sfv python2-32 /usr/bin/python-32

=== N32 ===

Change the libdir that Python is going to use to lib32:

 patch -Np1 -i ../Python-{{Python-Version}}-multilib-1.patch &&
 
 sed -i -e "s|@@MULTILIB_DIR@@|/lib32|g" Lib/distutils/command/install.py \
        Lib/distutils/sysconfig.py \
        Lib/pydoc.py \
        Lib/site.py \
        Lib/sysconfig.py \
        Lib/test/test_dl.py \
        Lib/test/test_site.py \
        Lib/trace.py \
        Makefile.pre.in \
        Modules/getpath.c \
        setup.py

Compile the package:

 sed -i "s@/usr/X11R6@${XORG_PREFIX}@g" setup.py &&
 sed -i 's@/lib64@/lib32@g' Modules/_ctypes/libffi/m4/libtool.m4 \
     Modules/_ctypes/libffi/configure setup.py &&
 sed -i "s/'lib64'/'lib32'/g" setup.py &&
 CC="gcc ${BUILDN32}" CXX="g++ ${BUILDN32}" ./configure --prefix=/usr \
     --libdir=/usr/lib32 --enable-shared &&
 make

Install the package

 make install &&
 mv -v /usr/bin/python{,-n32} &&
 mv -v /usr/bin/python2{,-n32} &&
 mv -v /usr/bin/python{{Python-Version2}}{,-n32} &&
 mv -v /usr/include/python{{Python-Version2}}/pyconfig{,-n32}.h &&
 ln -sfv python2.7-n32 /usr/bin/python2-n32 &&
 ln -sfv python2-n32 /usr/bin/python-n32

=== 64Bit ===

Change the libdir that Python is going to use to lib64:

 patch -Np1 -i ../Python-{{Python-Version}}-multilib-1.patch &&
 
 sed -i -e "s|@@MULTILIB_DIR@@|/lib64|g" Lib/distutils/command/install.py \
        Lib/distutils/sysconfig.py \
        Lib/pydoc.py \
        Lib/site.py \
        Lib/sysconfig.py \
        Lib/test/test_dl.py \
        Lib/test/test_site.py \
        Lib/trace.py \
        Makefile.pre.in \
        Modules/getpath.c \
        setup.py

Compile the package:

 sed -i "s@/usr/X11R6@${XORG_PREFIX}@g" setup.py &&
 CC="gcc ${BUILD64}" CXX="g++ ${BUILD64}" ./configure --prefix=/usr \
     --libdir=/usr/lib64 --enable-shared &&
 make

'''Remark'''
* sed on Modules/getpath.c did not work for me, had to add
 sed -i 's@lib/python@lib64/python@g' Modules/getpath.c
* Needed additional explicit export before configure:
 export USE_ARCH=64
* Needed LDFLAGS making the call to configure look like this:
 CC="gcc ${BUILD64}" CXX="g++ ${BUILD64}" LDFLAGS="-L/usr/lib64" \
 ./configure --prefix=/usr --libdir=/usr/lib64 --enable-shared
* Needed EXTRA_CFLAGS for make:
 make EXTRA_CFLAGS="-fwrapv"
'''Remark ends'''


Install the package

 make install &&
 mv -v /usr/bin/python{,-64} &&
 mv -v /usr/bin/python2{,-64} &&
 mv -v /usr/bin/python{{Python-Version2}}{,-64} &&
 ln -sfv python2.7-64 /usr/bin/python2-64 &&
 ln -sfv python2-64 /usr/bin/python-64 &&
 ln -sfv multiarch_wrapper /usr/bin/python &&
 ln -sfv multiarch_wrapper /usr/bin/python2 &&
 ln -sfv multiarch_wrapper /usr/bin/python{{Python-Version2}} &&
 mv -v /usr/include/python{{Python-Version2}}/pyconfig{,-64}.h

{{Stub-Header|pyconfig|/usr/include/python{{Python-Version2}}}}

= Contents =

{| style="text-align: left;"
|-valign="top"
! Installed Programs:
| pydoc, python, python{{Python-Version2}}, python-config, python{{Python-Version2}}-config, smtpd.py, and (if Tk is installed) idle
|-valign="top"
! Installed Libraries:
| libpython{{Python-Version2}}.so and various modules in /usr/lib/lib-dynload
|-valign="top"
! Installed Directories:
| /usr/include/python{{Python-Version2}}, /usr/lib/python{{Python-Version2}}
|}

=== Short Descriptions ===

{| style="text-align: left;"
|-valign="top"
! pydoc
| is a tool for reading python documentation.
|-valign="top"
! python
| is an interpreted, interactive, object-oriented programming language.
|-valign="top"
! python{{Python-Version2}}
| is a version-specific version of '''python'''.
|-valign="top"
! python-config
| is a symlink to '''python{{Python-Version2}}-config'''.
|-valign="top"
! python{{Python-Version}}-config
| ???
|-valign="top"
! smtpd.py
| is a Python implemention of the minimal SMTP protocol as defined in RFC 821.
|-valign="top"
! idle
| is an Integrated DeveLopment Environment (IDLE) for Python. It's based on Tkinter, Python's bindings to the Tk widget set.
|-valign="top"
! libpython{{Python-Version2}}.so
| ???
|}

[[Category:Programming]]