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Fix brp-python-bytecompile with the new features from compileall2 

Resolves: rhbz#1595265

The problem this change is intended to solve is with how `real_libdir`
is calculated. Let's assume we want to recursively byte-compile all
`*.py` files in
`/builddir/build/BUILDROOT/python-scales-1.0.9-250.fc32.x86_64/usr/lib/python3.8`.
Then, `real_libdir` is this path without `$RPM_BUILD_ROOT` with
the filename at the end which displays in the error message like this:

```
Bytecompiling .py files below /builddir/build/BUILDROOT/python-scales-1.0.9-250.fc32.x86_64/usr/lib/python3.8 using /usr/bin/python3.8
*** Error compiling '/builddir/build/BUILDROOT/python-scales-1.0.9-250.fc32.x86_64/usr/lib/python3.8/site-packages/greplin/bar.py'...
  File "/usr/lib/python3.8/bar.py", line 1
    import sin from math
               ^
SyntaxError: invalid syntax
```

`/usr/lib/python3.8/bar.py` is obviously wrong.

One of the new features of the `compileall2` module (which will
be available in stdlib in Python 3.9) is that the path byte-compiled to
`*.pyc` files is calculated for each file. This means that by using
`-s` and `-p` we can strip `$RPM_BUILD_ROOT` and prepend `/` for each
file individually which will fix the problem.

```
Bytecompiling .py files below /builddir/build/BUILDROOT/python-scales-1.0.9-250.fc32.x86_64/usr/lib/python3.8 using /usr/bin/python3.8
*** Error compiling '/builddir/build/BUILDROOT/python-scales-1.0.9-250.fc32.x86_64/usr/lib/python3.8/site-packages/greplin/bar.py'...
  File "/usr/lib/python3.8/site-packages/greplin/bar.py", line 1
    import sin from math
               ^
SyntaxError: invalid syntax
```

This change has an effect only for Python >= 3.4.
This commit is contained in:
Lumir Balhar 2019-11-05 09:40:12 +01:00
parent e64ffd7f26
commit 8f6bc2fd6c
1 changed files with 5 additions and 3 deletions
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@ -29,8 +29,8 @@ function python_bytecompile()
local python_binary=$2
local exclude=$3
local python_libdir=$4
local depth=$5
local real_libdir=$6
local depth=$5 # Not used for Python >= 3.4
local real_libdir=$6 # Not used for Python >= 3.4
python_version=$($python_binary -c "import sys; sys.stdout.write('{0.major}{0.minor}'.format(sys.version_info))")
@ -46,7 +46,9 @@ function python_bytecompile()
# -x excludes paths defined by regex
# -e excludes symbolic links pointing outside the build root
# -x and -e together implements the same functionality as the Filter class below
PYTHONPATH=/usr/lib/rpm/redhat/ $python_binary $options -m compileall2 -q -f $exclude -d $real_libdir -e $RPM_BUILD_ROOT $python_libdir
# -s strips $RPM_BUILD_ROOT from the path
# -p prepends the leading slash to the path to make it absolute
PYTHONPATH=/usr/lib/rpm/redhat/ $python_binary $options -m compileall2 -q -f $exclude -s $RPM_BUILD_ROOT -p / -e $RPM_BUILD_ROOT $python_libdir
else
#
# Python 3.3 and lower (incl. Python 2)