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Bug#992669: python3.9-dev: python3.9-config --cflags includes -specs=/usr/share/dpkg/no-pie-compile.specs
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Mark Watts
Aug 22, 2021, 12:10:03 AM8/22/21
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Package: python3.9-dev
Version: 3.9.2-1
Severity: normal
X-Debbugs-Cc: watts.m...@gmail.com
Dear Maintainer,
I'm using the python3.9-config --cflags to provide flags for building a
program that embeds python. I'm doing this in a Docker container with
the essential parts described by the Dockerfile excerpt below. I would
expect that any files referenced in the CFLAGS would be installed along
with python3.9-config. Instead, I have to install another package to get
this file or do a sed on cflags to remove the -specs argument.
Dockerfile:
```
FROM debian:11
ENV PYTHON_VERSION 3.9
# pkg-config is needed because, somehow, the CFLAGS in the python config script
# adds a flag that depends on a file from a package pkg-config depends on...
RUN apt-get update && \
apt-get install -y "^python${PYTHON_VERSION}-dev$"
RUN python${PYTHON_VERSION}-config --cflags | grep -qF /usr/share/dpkg/no-pie-compile.specs
RUN test -f /usr/share/dpkg/no-pie-compile.specs
```
-- System Information:
Debian Release: 11.0
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.10.0-7-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages python3.9-dev depends on:
ii libexpat1-dev 2.2.10-2
ii libpython3.9 3.9.2-1
ii libpython3.9-dev 3.9.2-1
ii python3.9 3.9.2-1
ii zlib1g-dev 1:1.2.11.dfsg-2
Versions of packages python3.9-dev recommends:
ii libc6-dev [libc-dev] 2.31-16
python3.9-dev suggests no packages.
-- no debconf information
Version: 3.9.2-1
Severity: normal
X-Debbugs-Cc: watts.m...@gmail.com
Dear Maintainer,
I'm using the python3.9-config --cflags to provide flags for building a
program that embeds python. I'm doing this in a Docker container with
the essential parts described by the Dockerfile excerpt below. I would
expect that any files referenced in the CFLAGS would be installed along
with python3.9-config. Instead, I have to install another package to get
this file or do a sed on cflags to remove the -specs argument.
Dockerfile:
```
FROM debian:11
ENV PYTHON_VERSION 3.9
# pkg-config is needed because, somehow, the CFLAGS in the python config script
# adds a flag that depends on a file from a package pkg-config depends on...
RUN apt-get update && \
apt-get install -y "^python${PYTHON_VERSION}-dev$"
RUN python${PYTHON_VERSION}-config --cflags | grep -qF /usr/share/dpkg/no-pie-compile.specs
RUN test -f /usr/share/dpkg/no-pie-compile.specs
```
-- System Information:
Debian Release: 11.0
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.10.0-7-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages python3.9-dev depends on:
ii libexpat1-dev 2.2.10-2
ii libpython3.9 3.9.2-1
ii libpython3.9-dev 3.9.2-1
ii python3.9 3.9.2-1
ii zlib1g-dev 1:1.2.11.dfsg-2
Versions of packages python3.9-dev recommends:
ii libc6-dev [libc-dev] 2.31-16
python3.9-dev suggests no packages.
-- no debconf information
Matthias Klose
Aug 23, 2021, 6:20:03 AM8/23/21
to
On 8/22/21 5:59 AM, Mark Watts wrote:
> Package: python3.9-dev
> Version: 3.9.2-1
> Severity: normal
> X-Debbugs-Cc: watts.m...@gmail.com
>
> Dear Maintainer,
>
> I'm using the python3.9-config --cflags to provide flags for building a
> program that embeds python. I'm doing this in a Docker container with
> the essential parts described by the Dockerfile excerpt below. I would
> expect that any files referenced in the CFLAGS would be installed along
> with python3.9-config. Instead, I have to install another package to get
> this file or do a sed on cflags to remove the -specs argument.
your expectations are unexpected. You have to call python3-config with the
> Package: python3.9-dev
> Version: 3.9.2-1
> Severity: normal
> X-Debbugs-Cc: watts.m...@gmail.com
>
> Dear Maintainer,
>
> I'm using the python3.9-config --cflags to provide flags for building a
> program that embeds python. I'm doing this in a Docker container with
> the essential parts described by the Dockerfile excerpt below. I would
> expect that any files referenced in the CFLAGS would be installed along
> with python3.9-config. Instead, I have to install another package to get
> this file or do a sed on cflags to remove the -specs argument.
--embed options for the embedded case. That will get you the complete options
needed for embedding an interpreter. I'm not sure I want to have these extra
dependencies as part of the python3.9-dev package.
You also don't write which options are missing from your build.
Mark Watts
Aug 24, 2021, 8:50:03 PM8/24/21
to
Matthias,
I've added the --embed flag to the python3.9-config options in my
Dockerfile example above, but have the same result. Apparently the
specs file comes from libdpkg-perl. I don't understand what the specs
file actually does, but I was able to build with or without it. If it
*is* supposed to be in the flags for something, libdpkg-perl should at
least be a "suggests" if not "recommends", right?
--
Cheers,
Mark W.
I've added the --embed flag to the python3.9-config options in my
Dockerfile example above, but have the same result. Apparently the
specs file comes from libdpkg-perl. I don't understand what the specs
file actually does, but I was able to build with or without it. If it
*is* supposed to be in the flags for something, libdpkg-perl should at
least be a "suggests" if not "recommends", right?
Cheers,
Mark W.
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