Difference between revisions of "Python"

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(I updated one of the notes.)
(2.7.8 has no multilib patch. William Feely has one for his LFS multilib build: https://www.williamfeely.info/wiki/Lfs-multilib/blfs#Python_2)
 
(33 intermediate revisions by 9 users not shown)
Line 2: Line 2:
 
|-valign="top"
 
|-valign="top"
 
!Download Source:
 
!Download Source:
−
| http://www.python.org/ftp/python/{{Python-Version}}/Python-{{Python-Version}}.tar.bz2
+
| 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"
 
|-valign="top"
−
!Required Patch:
 
−
| http://svn.cross-lfs.org/svn/repos/patches/Python/Python-{{Python-Version}}-gdbm-1.patch
 
−
|-valign='top"
 
 
!Required Patch (For Multilib):
 
!Required Patch (For Multilib):
−
| http://svn.cross-lfs.org/svn/repos/patches/Python/Python-{{Python-Version}}-multilib-1.patch
+
| Bad link: http://svn.cross-lfs.org/svn/repos/patches/Python/Python-{{Python-Version}}-multilib-1.patch
 +
|-valign="top"
 
|}
 
|}
  
 
----
 
----
  
−
== Introduction to Python ==
+
{{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/}}
−
 
 
−
The Python package contains the Python development environment. This is useful for object-oriented programming, writing scripts, prototyping large programs or developing entire applications.  
 
  
 
== Dependencies ==
 
== Dependencies ==
Line 24: Line 23:
 
* [[GDBM]]
 
* [[GDBM]]
 
* [[X Window System]]
 
* [[X Window System]]
 +
* [[SQLite3]]
 +
* [[Libffi]]
 +
* [[Bluez]]
  
 
== Non-Multilib ==
 
== Non-Multilib ==
  
−
'''Note:'''
+
{{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.}}
−
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.
 
−
 
 
−
 
 
  
 +
{{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:
 
Compile the package:
  
−
  patch -Np1 -i ../Python-{{Python-Version}}-gdbm-1.patch &&
+
  sed -i "s@/usr/X11R6@${XORG_PREFIX}@g" setup.py &&
 
  ./configure --prefix=/usr --enable-shared &&
 
  ./configure --prefix=/usr --enable-shared &&
−
  make EXTRA_CFLAGS="-fwrapv"
+
  make
  
 
Install the package
 
Install the package
Line 59: Line 46:
  
 
''--enable-shared'': Enables the building of shared libraries.
 
''--enable-shared'': Enables the building of shared libraries.
−
 
−
''-fwrapv'': This flag is used to make it so that '''make test''' can find the python libraries and so that '''make install''' doesn't fail. Why this fixes the problem is unknown. According to GCC, ''-fwrapv'' "instructs the compiler to assume that signed arithmetic overflow of addition, subtraction and multiplication wraps around using twos-complement representation."
 
  
 
== Multilib ==
 
== Multilib ==
Line 68: Line 53:
 
Compile the package:
 
Compile the package:
  
−
  patch -Np1 -i ../Python-{{Python-Version}}-gdbm-1.patch &&
+
  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 \
 
  CC="gcc ${BUILD32}" CXX="g++ ${BUILD32}" ./configure --prefix=/usr \
 
     --enable-shared &&
 
     --enable-shared &&
−
  make EXTRA_CFLAGS="-fwrapv"
+
  make
  
 
Install the package
 
Install the package
Line 77: Line 65:
 
  make install &&
 
  make install &&
 
  mv -v /usr/bin/python{,-32} &&
 
  mv -v /usr/bin/python{,-32} &&
−
  mv -v /usr/bin/python{{Python-Version}}{,-32} &&
+
mv -v /usr/bin/python2{,-32} &&
−
  mv -v /usr/include/python{{Python-Version}}/pyconfig{,-32}.h
+
  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 ===
 
=== N32 ===
Line 84: Line 75:
 
Change the libdir that Python is going to use to lib32:
 
Change the libdir that Python is going to use to lib32:
  
−
  patch -Np1 -i ../Python-{{Python-Version}}-multilib-1.patch
+
  patch -Np1 -i ../Python-{{Python-Version}}-multilib-1.patch &&
−
  sed -i -e "s:@@MULTILIB_DIR@@:lib32:g" \
+
−
        Lib/distutils/command/install.py \
+
  sed -i -e "s|@@MULTILIB_DIR@@|/lib32|g" Lib/distutils/command/install.py \
−
        Lib/distutils/sysconfig.py \
+
        Lib/distutils/sysconfig.py \
−
        Lib/site.py \
+
        Lib/pydoc.py \
−
        Makefile.pre.in \
+
        Lib/site.py \
−
        Modules/Setup.dist \
+
        Lib/sysconfig.py \
−
        Modules/getpath.c \
+
        Lib/test/test_dl.py \
−
        setup.py
+
        Lib/test/test_site.py \
 +
        Lib/trace.py \
 +
        Makefile.pre.in \
 +
        Modules/getpath.c \
 +
        setup.py
  
 
Compile the package:
 
Compile the package:
  
−
  patch -Np1 -i ../Python-{{Python-Version}}-gdbm-1.patch &&
+
  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 \
 
  CC="gcc ${BUILDN32}" CXX="g++ ${BUILDN32}" ./configure --prefix=/usr \
 
     --libdir=/usr/lib32 --enable-shared &&
 
     --libdir=/usr/lib32 --enable-shared &&
−
  make EXTRA_CFLAGS="-fwrapv"
+
  make
  
 
Install the package
 
Install the package
Line 105: Line 103:
 
  make install &&
 
  make install &&
 
  mv -v /usr/bin/python{,-n32} &&
 
  mv -v /usr/bin/python{,-n32} &&
−
  mv -v /usr/bin/python{{Python-Version}}{,-n32} &&
+
mv -v /usr/bin/python2{,-n32} &&
−
  mv -v /usr/include/python{{Python-Version}}/pyconfig{,-n32}.h
+
  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 ===
 
=== 64Bit ===
Line 112: Line 113:
 
Change the libdir that Python is going to use to lib64:
 
Change the libdir that Python is going to use to lib64:
  
−
  patch -Np1 -i ../Python-{{Python-Version}}-multilib-1.patch
+
  patch -Np1 -i ../Python-{{Python-Version}}-multilib-1.patch &&
−
  sed -i -e "s:@@MULTILIB_DIR@@:lib64:g" \
+
−
        Lib/distutils/command/install.py \
+
  sed -i -e "s|@@MULTILIB_DIR@@|/lib64|g" Lib/distutils/command/install.py \
−
        Lib/distutils/sysconfig.py \
+
        Lib/distutils/sysconfig.py \
−
        Lib/site.py \
+
        Lib/pydoc.py \
−
        Makefile.pre.in \
+
        Lib/site.py \
−
        Modules/Setup.dist \
+
        Lib/sysconfig.py \
−
        Modules/getpath.c \
+
        Lib/test/test_dl.py \
−
        setup.py
+
        Lib/test/test_site.py \
 +
        Lib/trace.py \
 +
        Makefile.pre.in \
 +
        Modules/getpath.c \
 +
        setup.py
  
 
Compile the package:
 
Compile the package:
  
−
  patch -Np1 -i ../Python-{{Python-Version}}-gdbm-1.patch &&
+
  sed -i "s@/usr/X11R6@${XORG_PREFIX}@g" setup.py &&
 
  CC="gcc ${BUILD64}" CXX="g++ ${BUILD64}" ./configure --prefix=/usr \
 
  CC="gcc ${BUILD64}" CXX="g++ ${BUILD64}" ./configure --prefix=/usr \
 
     --libdir=/usr/lib64 --enable-shared &&
 
     --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"
 
  make EXTRA_CFLAGS="-fwrapv"
 +
'''Remark ends'''
 +
  
 
Install the package
 
Install the package
Line 133: Line 151:
 
  make install &&
 
  make install &&
 
  mv -v /usr/bin/python{,-64} &&
 
  mv -v /usr/bin/python{,-64} &&
−
  mv -v /usr/bin/python{{Python-Version}}{,-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/python &&
−
  ln -sfv multiarch_wrapper /usr/bin/python2.4 &&
+
  ln -sfv multiarch_wrapper /usr/bin/python2 &&
−
  mv -v /usr/include/python{{Python-Version}}/pyconfig{,-64}.h
+
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
 +
| ???
 +
|}
  
−
{{Stub-Header|pyconfig.h|/usr/include/python{{Python-Version}}}}
+
[[Category:Programming]]

Latest revision as of 05:22, 18 July 2017

Download Source: http://www.python.org/ftp/python/2.7.8/Python-2.7.8.tar.xz
Alternate Requierd Patch (For Multilib): Refer to https://www.williamfeely.info/download/lfs-multilib/Python-2.7.6-multilib-1.patch
Required Patch (For Multilib): Bad link: http://svn.cross-lfs.org/svn/repos/patches/Python/Python-2.7.8-multilib-1.patch

Introduction to Python

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.

Project Homepage: http://www.python.org/

Dependencies

Optional

Non-Multilib

Caution.png

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.
Caution.png

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/python2.7{,-32} &&
mv -v /usr/include/python2.7/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-2.7.8-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/python2.7{,-n32} &&
mv -v /usr/include/python2.7/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-2.7.8-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/python2.7{,-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/python2.7 &&
mv -v /usr/include/python2.7/pyconfig{,-64}.h

Creating a Stub Header (Multilib Only)

Creating a Generic Stub Header

cat > /usr/include/python2.7/pyconfig.h << "EOF"
/* pyconfig.h - Stub Header  */
#ifndef __STUB__PYCONFIG_H__
#define __STUB__PYCONFIG_H__

#if defined(__x86_64__) || \
    defined(__sparc64__) || \
    defined(__arch64__) || \
    defined(__powerpc64__) || \
    defined (__s390x__)
# include "pyconfig-64.h"
#else
# include "pyconfig-32.h"
#endif

#endif /* __STUB__PYCONFIG_H__ */
EOF

Creating a Stub Header For Mips

cat > /usr/include/python2.7/pyconfig.h << "EOF"
/* pyconfig.h - Stub Header  */
#ifndef __STUB__PYCONFIG_H__
#define __STUB__PYCONFIG_H__

#include <sgidefs.h>

#if (_MIPS_SIM == _ABIO32)
# include "pyconfig-32.h"
#elif (_MIPS_SIM == _ABIN32)
# include "pyconfig-n32.h"
#elif (_MIPS_SIM == _ABI64)
# include "pyconfig-64.h"
#endif

#endif /* __STUB__PYCONFIG_H__ */
EOF

Contents

Installed Programs: pydoc, python, python2.7, python-config, python2.7-config, smtpd.py, and (if Tk is installed) idle
Installed Libraries: libpython2.7.so and various modules in /usr/lib/lib-dynload
Installed Directories: /usr/include/python2.7, /usr/lib/python2.7

Short Descriptions

pydoc is a tool for reading python documentation.
python is an interpreted, interactive, object-oriented programming language.
python2.7 is a version-specific version of python.
python-config is a symlink to python2.7-config.
python2.7.8-config ???
smtpd.py is a Python implemention of the minimal SMTP protocol as defined in RFC 821.
idle is an Integrated DeveLopment Environment (IDLE) for Python. It's based on Tkinter, Python's bindings to the Tk widget set.
libpython2.7.so ???
Retrieved from "?title=Python&oldid=21666"