New submission from STINNER Victor <vstin...@python.org>:
I modified RHEL7 configuration to build Python using --with-dtrace:
argv: [b'./configure', b'--prefix', b'$(PWD)/target', b'--with-pydebug',
b'--with-platlibdir=lib64', b'--enable-ipv6', b'--enable-shared',
b'--with-computed-gotos=yes', b'--with-dbmliborder=gdbm:ndbm:bdb',
b'--enable-loadable-sqlite-extensions', b'--with-dtrace', b'--with-lto',
b'--with-ssl-default-suites=openssl', b'--without-static-libpython',
b'--with-valgrind']
Problem: the generated Include/pydtrace_probes.h failed to build :-(
---
/usr/bin/dtrace -o Include/pydtrace_probes.h -h -s Include/pydtrace.d
sed 's/PYTHON_/PyDTrace_/' Include/pydtrace_probes.h >
Include/pydtrace_probes.h.tmp
mv Include/pydtrace_probes.h.tmp Include/pydtrace_probes.h
(...)
In file included from ./Include/pydtrace_probes.h:10:0,
from ./Include/pydtrace.h:11,
from Modules/gcmodule.c:33:
Modules/gcmodule.c: In function ‘gc_collect_main’:
./Include/pydtrace_probes.h:98:1: error: impossible constraint in ‘asm’
DTRACE_PROBE1 (python, gc__start, arg1)
^
./Include/pydtrace_probes.h:109:1: error: impossible constraint in ‘asm’
DTRACE_PROBE1 (python, gc__done, arg1)
^
---
Full logs of AMD64 RHEL7 3.x:
https://buildbot.python.org/all/#/builders/15/builds/761
In the meantime, I disabled --with-dtrace since other buildbot workers failed
when dtrace was no installed. See:
https://github.com/python/buildmaster-config/pull/264
Maybe it's a problem on RHEL7. Maybe the problem is that Python is built with
LTO?
----------
components: Build
messages: 401526
nosy: cstratak, hroncok, vstinner
priority: normal
severity: normal
status: open
title: DTrace on RHEL7, generated Include/pydtrace_probes.h fails to build:
error: impossible constraint in ‘asm’
versions: Python 3.10, Python 3.11
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue45157>
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