How to ignore local python when building python from source

Question

When I try to build my own version of Python using:

./configure --enable-shared --prefix=/app/vendor/python-dev && make && make install

I see some errors during installation:

/usr/bin/ld: /usr/local/lib/libpython2.7.a(abstract.o): relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC /usr/local/lib/libpython2.7.a: could not read symbols: Bad value

The problem starts when the linker tries to use /usr/local/lib/libpython2.7.a and not the newly compiled library.

How can I prevent the linker (configure/make) from using the python libraries installed on the system?

./configure --enable-shared --prefix=/app/vendor/python-dev && make && make install works for me (from the Python-2.7.5 tarball on Ubuntu 13.04). If the error occurs during the make part, you'll have to include the full output from make. — Aya
– Aya, Commented Jun 7, 2013 at 15:44
This is the only error. It simply repeats for other modules as well. I'm using 2.7.4 tarball. But I have 2.7.4 on my machine, compiled statically (I guess without -fPIC). — Xyand
– Xyand, Commented Jun 7, 2013 at 15:47
Sure, but the reason for the error will have happened much earlier in the build, so it's impossible to diagnose without more info. Take a look at this, and the followups. I'm not sure if it's the same issue, but there's not much more I can do without seeing the output from make. — Aya
– Aya, Commented Jun 7, 2013 at 16:11
Here is the log pastebin.com/ZBUp2cnd. And yes, the post mentions the same problem. But without a solution. — Xyand
– Xyand, Commented Jun 7, 2013 at 17:34

interpolack · Accepted Answer · 2015-06-25 19:36:44Z

13

This looks to be a misfeature of the setup.py script always including /usr/local in the search path when make builds the target sharedmods.

You'll have to manually frob the setup.py, so do the...

./configure --enable-shared --prefix=/app/vendor/python-dev

...first, then edit setup.py, find lines 442, 443, and 444 which should look like this...

if not cross_compiling:
    add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
    add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')

...and comment them out so they look like this...

# if not cross_compiling
    # add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
    # add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')

...then the make should work.

edited Jun 25, 2015 at 19:36

interpolack

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answered Jun 7, 2013 at 18:02

Aya

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2 Comments

Xephon Over a year ago

The if statement need to be commented out as well. Otherwise parser would be expecting an indented block which is the two add_dir_to_list lines. Just for future reference.

Evstifeev Roman Over a year ago

i just met this issue when i was trying to recompile and reinstall python to /usr/local/lib again. In this case you have to use --prefix=/usr/local/lib again, and editing setup.py, as this answer suggests won't help. To fix it, I had to delete existing /usr/local/lib/libpython2.7.a file and /usr/local/lib/python2.7/ directory (maybe latter is not needed)

Nathan Tuggy · Accepted Answer · 2015-05-10 02:29:16Z

5

I solved with this script:

# Python 2.7.6: 
wget http://python.org/ftp/python/2.7.6/Python-2.7.6.tar.xz
tar xf Python-2.7.6.tar.xz
cd Python-2.7.6
./configure --prefix=/usr/local --enable-unicode=ucs4 --enable-shared       LDFLAGS="-Wl,-rpath /usr/local/lib"
make && make altinstall

edited May 10, 2015 at 2:29

Nathan Tuggy

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answered May 10, 2015 at 2:17

Igor Ferreira

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Comments

Blaze · Accepted Answer · 2017-11-30 14:17:07Z

0

I just moved /usr/local/lib/libpython2.7.a to /tmp

answered Nov 30, 2017 at 14:17

Blaze

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