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[gelöst] Wie und wo, Python byte-compiling einschalten?
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Jule
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Joined: 28 Mar 2006
Posts: 11

PostPosted: Thu Mar 01, 2012 9:20 am    Post subject: [gelöst] Wie und wo, Python byte-compiling einschalten? Reply with quote

Hallo,

wie schaltet man für Python das byte-compiling ein?
Ich muss irgendwo die Variable PYTHONDONTWRITEBYTECODE=0 setzen.
Wie und wo ich das machen muss, dass es immer eingeschaltet ist, ist mir aber ein Rätsel.

Vielleicht noch was zur Problematik. Ich will pycurl installieren. Bekomme folgende Fehlermeldung:
Code:
 # emerge dev-python/pycurl

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Calculating dependencies... done!

>>> Verifying ebuild manifests

>>> Emerging (1 of 1) dev-python/pycurl-7.19.0
openpty failed: 'out of pty devices'
 * pycurl-7.19.0.tar.gz RMD160 SHA1 SHA256 size ;-) ...                  [ ok ]
>>> Unpacking source...
>>> Unpacking pycurl-7.19.0.tar.gz to /var/tmp/portage/dev-python/pycurl-7.19.0/                                                                                work
>>> Source unpacked in /var/tmp/portage/dev-python/pycurl-7.19.0/work
>>> Preparing source in /var/tmp/portage/dev-python/pycurl-7.19.0/work/pycurl-7.                                                                                19.0 ...
 * Applying pycurl-7.19.0-linking.patch ...                              [ ok ]
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-python/pycurl-7.19.0/work/pycurl-                                                                                7.19.0 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-python/pycurl-7.19.0/work/pycurl-7.                                                                                19.0 ...
 * Building of dev-python/pycurl-7.19.0 with CPython 2.7...
python2.7 setup.py build -b build-2.7
Using curl-config (libcurl 7.24.0)
running build
running build_py
creating build-2.7
creating build-2.7/lib.linux-x86_64-2.7
creating build-2.7/lib.linux-x86_64-2.7/curl
copying python/curl/__init__.py -> build-2.7/lib.linux-x86_64-2.7/curl
warning: build_py: byte-compiling is disabled, skipping.

running build_ext
building 'pycurl' extension
creating build-2.7/temp.linux-x86_64-2.7
creating build-2.7/temp.linux-x86_64-2.7/src
i486-pc-linux-gnu-gcc -pthread -Os -mtune=i686 -pipe -fPIC -DHAVE_CURL_OPENSSL=1                                                                                 -DHAVE_CURL_OPENSSL=1 -DHAVE_CURL_SSL=1 -I/usr/include/python2.7 -c src/pycurl.                                                                                c -o build-2.7/temp.linux-x86_64-2.7/src/pycurl.o
src/pycurl.c:79:31: error: openssl/crypto.h: No such file or directory
src/pycurl.c: In function 'pycurl_ssl_lock':
src/pycurl.c:393: error: 'CRYPTO_LOCK' undeclared (first use in this function)
src/pycurl.c:393: error: (Each undeclared identifier is reported only once
src/pycurl.c:393: error: for each function it appears in.)
error: command 'i486-pc-linux-gnu-gcc' failed with exit status 1
 * ERROR: dev-python/pycurl-7.19.0 failed (compile phase):
 *   Building failed with CPython 2.7 in distutils_building() function
 *
 * Call stack:
 *     ebuild.sh, line   56:  Called src_compile
 *   environment, line 5075:  Called distutils_src_compile
 *   environment, line 1227:  Called python_execute_function 'distutils_building                                                                                '
 *   environment, line 3414:  Called die
 * The specific snippet of code:
 *                       die "${failure_message}";
 *
 * If you need support, post the output of 'emerge --info =dev-python/pycurl-7.1                                                                                9.0',
 * the complete build log and the output of 'emerge -pqv =dev-python/pycurl-7.19                                                                                .0'.
 * The complete build log is located at '/var/tmp/portage/dev-python/pycurl-7.19                                                                                .0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-python/pycurl                                                                                -7.19.0/temp/environment'.
 * S: '/var/tmp/portage/dev-python/pycurl-7.19.0/work/pycurl-7.19.0'

>>> Failed to emerge dev-python/pycurl-7.19.0, Log file:

>>>  '/var/tmp/portage/dev-python/pycurl-7.19.0/temp/build.log'

 * Messages for package dev-python/pycurl-7.19.0:

 * ERROR: dev-python/pycurl-7.19.0 failed (compile phase):
 *   Building failed with CPython 2.7 in distutils_building() function
 *
 * Call stack:
 *     ebuild.sh, line   56:  Called src_compile
 *   environment, line 5075:  Called distutils_src_compile
 *   environment, line 1227:  Called python_execute_function 'distutils_building                                                                                '
 *   environment, line 3414:  Called die
 * The specific snippet of code:
 *                       die "${failure_message}";
 *
 * If you need support, post the output of 'emerge --info =dev-python/pycurl-7.1                                                                                9.0',
 * the complete build log and the output of 'emerge -pqv =dev-python/pycurl-7.19                                                                                .0'.
 * The complete build log is located at '/var/tmp/portage/dev-python/pycurl-7.19                                                                                .0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-python/pycurl                                                                                -7.19.0/temp/environment'.
 * S: '/var/tmp/portage/dev-python/pycurl-7.19.0/work/pycurl-7.19.0'

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Ein export=PYTHONDONTWRITEBYTECODE=0 hat nix gebracht, die Installation läuft immer noch mit der Fehlermeldung ab.


Last edited by Jule on Fri Mar 02, 2012 8:38 am; edited 1 time in total
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theotherjoe
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PostPosted: Fri Mar 02, 2012 7:19 am    Post subject: Reply with quote

Würde vermuten, dass openssl nicht mit USE="python" compiliert/installiert wurde.
Zeig doch mal was folgendes command ausgibt:
Code:
# emerge -pv openssl
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franzf
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PostPosted: Fri Mar 02, 2012 7:59 am    Post subject: Reply with quote

Das Problem hat doch nix mit bytecode-compiling zu tun. Python-Programme werden interpretiert (.py-Dateien sind plain-text). Das kann ganz schön dauern. Dafür kann man das Python-Programm in ein Zwischenformat - den Bytecode - kompilieren. Dieser startet schnell als das ursprüngliche Programm aus dem .py. Python-Bytecode-files enden üblicherweise auf ".pyc".
Was du hier hast ist ein klassischer gcc-compiler-Fehler beim Kompilieren eines C-Quelltextes.

Kannst du mal zeigen, mit welchen USE-Flags du curl gebaut hast?
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Jule
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PostPosted: Fri Mar 02, 2012 8:36 am    Post subject: Reply with quote

Ok, wenn ich
Code:
USE="python" emerge openssl
geht es.
Hab es also tatsächlich verpeilt, Openssl mit Python Support zu bauen.
Die Fehlermeldung, hat mich aber, auf die Spur mit dem byte-compiling gebracht, war wohl naiv von mir zu glauben dass wäre es gewesen.

Vielen Dank an Euch.
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franzf
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PostPosted: Fri Mar 02, 2012 8:47 am    Post subject: Reply with quote

Wenn das geholfen hat, hattest du einfach eine fehlerhafte openssl-Installation. openssl hat KEIN python-USE-Flag. Es hätte auch mit USE="-python" emerge openssl funktioniert ;) Oder einfach nur emerge openssl.
BTW. hast du jetzt ein unnötiges Paket in deiner world-Datei (*) ;) openssl ist nämlich eine Abhängigkeit von vielen anderen Paketen. Bei solchen Paketen in Zukunft die Option "--oneshot" oder kurz "-1" bei emerge mit angeben, dann wird das worldfile nicht angerührt. worldfile manuell editieren und openssl wieder rausschmeißen :)

(*) üblicherweise ist das /var/lib/portage/world
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