pydeps

#!/usr/bin/env bash
#
# pydeps
#   - audit a python build archive for extension module link deps
#
# desc
#   - list modules with runtime link dependencies OTHER THAN LIBC
#   - intended to assist in developing a Setup.local "*static*" section
#   - uses a temporary directory to extract all .so files
#   - removes tmpdir when done
#
# arg1
#   - path to python build archive (tar.zst format)
#
# scott@smemsh.net
# https://github.com/smemsh/utiladm/
# https://spdx.org/licenses/GPL-2.0
#

set -e
set -o pipefail

test -f ${1:?} && test -r $1
[[ `file -b --mime-type $1` =~ application/(x-){0,1}zstd ]]
abspath=$(readlink -f $1)

tmpdir=`mktemp -qd`
cd $tmpdir

tar \
	-axf $abspath \
	--wildcards '*.so' \
	--transform 's,.*/,,' \
;

for file in *
do echo ${file%%.*}; ldd $file; echo; done \
| grep -vE \
	-e linux-vdso \
	-e ld-linux-x86 \
	-e '\<libc\.so\.6\>' \
| awk '/^[[:alnum:]_]/ {
	deps = ""
	libline = $0
	while (getline) {
		if ($1 ~ /^lib/) {
			deps = deps" "$1
			continue
		} else if (length(deps)) {
			printf("%s:%s\n",
			       gensub("^.*/(.+).cpython.*$",
			              "\\1", 1, libline \
			       ),
			       deps \
			)
		}
		next
	}
}' \
| sort \
| column -t

cd ..
rm -r "$tmpdir"