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Editando: brp-python-bytecompile

#!/usr/bin/bash
errors_terminate=$2
extra=$3

# If using normal root, avoid changing anything.
if [ -z "$RPM_BUILD_ROOT" ] || [ "$RPM_BUILD_ROOT" = "/" ]; then
	exit 0
fi

# Figure out how deep we need to descend.  We could pick an insanely high
# number and hope it's enough, but somewhere, somebody's sure to run into it.
depth=`(find "$RPM_BUILD_ROOT" -type f -name "*.py" -print0 ; echo /) | \
       xargs -0 -n 1 dirname | sed 's,[^/],,g' | sort -u | tail -n 1 | wc -c`
if [ -z "$depth" ] || [ "$depth" -le "1" ]; then
	exit 0
fi

function python_bytecompile()
{
    local options=$1
    local python_binary=$2
    local exclude=$3
    local python_libdir=$4
    local depth=$5
    local real_libdir=$6

cat << EOF | $python_binary $options
import compileall, sys, os, re

python_libdir = "$python_libdir"
depth = $depth
real_libdir = "$real_libdir"
build_root = "$RPM_BUILD_ROOT"
exclude = r"$exclude"

class Filter:
    def search(self, path):
        ret = not os.path.realpath(path).startswith(build_root)
        if exclude:
            ret = ret or re.search(exclude, path)
        return ret

sys.exit(not compileall.compile_dir(python_libdir, depth, real_libdir, force=1, rx=Filter(), quiet=1))
EOF
}

# .pyc/.pyo files embed a "magic" value, identifying the ABI version of Python
# bytecode that they are for.
#
# The files below RPM_BUILD_ROOT could be targeting multiple versions of
# python (e.g. a single build that emits several subpackages e.g. a
# python26-foo subpackage, a python31-foo subpackage etc)
#
# Support this by assuming that below each /usr/lib/python$VERSION/, all
# .pyc/.pyo files are to be compiled for /usr/bin/python$VERSION.
# 
# For example, below /usr/lib/python2.6/, we're targeting /usr/bin/python2.6
# and below /usr/lib/python3.1/, we're targeting /usr/bin/python3.1

# Disable Python hash seed randomization
# This helps to make byte-compilation more reproducible
export PYTHONHASHSEED=0

shopt -s nullglob
for python_libdir in `find "$RPM_BUILD_ROOT" -type d|grep -E "/usr/lib(64)?/python[0-9]\.[0-9]$"`;
do
	python_binary=/usr/bin/$(basename $python_libdir)
	real_libdir=${python_libdir/$RPM_BUILD_ROOT/}
	echo "Bytecompiling .py files below $python_libdir using $python_binary"

# Generate normal (.pyc) byte-compiled files.
	python_bytecompile "" "$python_binary" "" "$python_libdir" "$depth" "$real_libdir"
	if [ $? -ne 0 ] && [ 0$errors_terminate -ne 0 ]; then
		# One or more of the files had a syntax error
		exit 1
	fi

# Generate optimized (.pyo) byte-compiled files.
	python_bytecompile "-O" "$python_binary" "" "$python_libdir" "$depth" "$real_libdir"
	if [ $? -ne 0 ] && [ 0$errors_terminate -ne 0 ]; then
		# One or more of the files had a syntax error
		exit 1
	fi
done

# Handle other locations in the filesystem using the default python implementation
# if extra is set to 0, don't do this
if [ 0$extra -eq 0 ]; then
	exit 0
fi

# If we don't have a default python interpreter, we cannot proceed
default_python=${1:-/usr/bin/python}
if [ ! -x "$default_python" ]; then
	exit 0
fi

# Figure out if there are files to be bytecompiled with the default_python at all
# this prevents unnecessary default_python invocation
find "$RPM_BUILD_ROOT" -type f -name "*.py" | grep -Ev "/bin/|/sbin/|/usr/lib(64)?/python[0-9]\.[0-9]|/usr/share/doc" || exit 0

# Generate normal (.pyc) byte-compiled files.
python_bytecompile "" $default_python "/bin/|/sbin/|/usr/lib(64)?/python[0-9]\.[0-9]|/usr/share/doc" "$RPM_BUILD_ROOT" "$depth" "/"
if [ $? -ne 0 ] && [ 0$errors_terminate -ne 0 ]; then
	# One or more of the files had a syntax error
	exit 1
fi

# Generate optimized (.pyo) byte-compiled files.
python_bytecompile "-O" $default_python "/bin/|/sbin/|/usr/lib(64)?/python[0-9]\.[0-9]|/usr/share/doc" "$RPM_BUILD_ROOT" "$depth" "/"
if [ $? -ne 0 ] && [ 0$errors_terminate -ne 0 ]; then
	# One or more of the files had a syntax error
	exit 1
fi
exit 0

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