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-rw-r--r--src/find-libdeps.in89
1 files changed, 89 insertions, 0 deletions
diff --git a/src/find-libdeps.in b/src/find-libdeps.in
new file mode 100644
index 0000000..e1423b8
--- /dev/null
+++ b/src/find-libdeps.in
@@ -0,0 +1,89 @@
+#!/bin/bash
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+m4_include(lib/common.sh)
+
+set -e
+shopt -s extglob
+
+IGNORE_INTERNAL=0
+
+if [[ $1 = "--ignore-internal" ]]; then
+ IGNORE_INTERNAL=1
+ shift
+fi
+
+script_mode=${BASH_SOURCE[0]##*/find-lib}
+
+case $script_mode in
+ deps|provides) true;;
+ *) die "Unknown mode %s" "$script_mode" ;;
+esac
+
+if [[ -z $1 ]]; then
+ echo "${0##*/} [options] <package file|extracted package dir>"
+ echo "Options:"
+ echo " --ignore-internal ignore internal libraries"
+ exit 1
+fi
+
+if [[ -d $1 ]]; then
+ pushd "$1" >/dev/null
+else
+ setup_workdir
+
+ case ${script_mode} in
+ deps) bsdtar -C "$WORKDIR" -xf "$1";;
+ provides) bsdtar -C "$WORKDIR" -xf "$1" --include="*.so*";;
+ esac
+
+ pushd "$WORKDIR" >/dev/null
+fi
+
+process_sofile() {
+ # extract the library name: libfoo.so
+ soname="${sofile%.so?(+(.+([0-9])))}".so
+ # extract the major version: 1
+ soversion="${sofile##*\.so\.}"
+ if [[ "$soversion" = "$sofile" ]] && ((IGNORE_INTERNAL)); then
+ return
+ fi
+ if ! in_array "${soname}=${soversion}-${soarch}" "${soobjects[@]}"; then
+ # libfoo.so=1-64
+ echo "${soname}=${soversion}-${soarch}"
+ soobjects+=("${soname}=${soversion}-${soarch}")
+ fi
+}
+
+case $script_mode in
+ deps) find_args=(-perm -u+x);;
+ provides) find_args=(-name '*.so*');;
+esac
+
+find . -type f "${find_args[@]}" | while read -r filename; do
+ if [[ $script_mode = "provides" ]]; then
+ # ignore if we don't have a shared object
+ if ! LC_ALL=C readelf -h "$filename" 2>/dev/null | grep -q '.*Type:.*DYN (Shared object file).*'; then
+ continue
+ fi
+ fi
+
+ # get architecture of the file; if soarch is empty it's not an ELF binary
+ soarch=$(LC_ALL=C readelf -h "$filename" 2>/dev/null | sed -n 's/.*Class.*ELF\(32\|64\)/\1/p')
+ [[ -n $soarch ]] || continue
+
+ if [[ $script_mode = "provides" ]]; then
+ # get the string binaries link to: libfoo.so.1.2 -> libfoo.so.1
+ sofile=$(LC_ALL=C readelf -d "$filename" 2>/dev/null | sed -n 's/.*Library soname: \[\(.*\)\].*/\1/p')
+ [[ -z $sofile ]] && sofile="${filename##*/}"
+ process_sofile
+ elif [[ $script_mode = "deps" ]]; then
+ # process all libraries needed by the binary
+ for sofile in $(LC_ALL=C readelf -d "$filename" 2>/dev/null | sed -nr 's/.*Shared library: \[(.*)\].*/\1/p'); do
+ process_sofile
+ done
+ fi
+done
+
+popd >/dev/null