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Diffstat (limited to 'packaging/macos/jhb/usr/src/bash_d/lib.sh')
| -rw-r--r-- | packaging/macos/jhb/usr/src/bash_d/lib.sh | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/packaging/macos/jhb/usr/src/bash_d/lib.sh b/packaging/macos/jhb/usr/src/bash_d/lib.sh new file mode 100644 index 0000000..c1f385e --- /dev/null +++ b/packaging/macos/jhb/usr/src/bash_d/lib.sh @@ -0,0 +1,174 @@ +# SPDX-FileCopyrightText: 2021 René de Hesselle <dehesselle@web.de> +# +# SPDX-License-Identifier: GPL-2.0-or-later + +### description ################################################################ + +# Provide convenience wrappers for install_name_tool. + +### shellcheck ################################################################# + +# shellcheck shell=bash # no shebang as this file is intended to be sourced + +### dependencies ############################################################### + +assert_darwin +bash_d_include echo +bash_d_include readlinkf + +### variables ################################################################## + +LIB_RESET_ID=keep # options: basename, canonical, keep + +### functions ################################################################## + +function lib_change_path +{ + # Compared to install_name_tool, this function + # - requires less arguments as 'source' can be deducted from 'target' + # - can apply the requested changes to multiple binaries at once + + local target=$1 # new path to dynamically linked library + local binaries=${*:2} # binaries to modify + + local source_lib=${target##*/} # get library filename from target location + + for binary in $binaries; do # won't work if spaces in paths + if [[ $binary == *.so ]] || + [[ $binary == *.dylib ]] || + [ $(file $binary | grep "shared library" | wc -l) -eq 1 ]; then + lib_reset_id $binary + fi + + local source=$(otool -L $binary | grep "$source_lib " | awk '{ print $1 }') + if [ -z $source ]; then + echo_w "no $source_lib in $binary" + else + # Reconstructing 'target' as it might have been specified as regex. + target=$(dirname $target)/$(basename $source) + + install_name_tool -change $source $target $binary + fi + done +} + +function lib_change_paths +{ + # This is a wrapper ontop lib_change_path: given a directory 'lib_dir' that + # contains the libraries, all (matching) libraries linked in 'binary' can be + # changed at once to a specified 'target' path. + + local target=$1 # new path to dynamically linked library + local lib_dir=$2 + local binaries=${*:3} + + for binary in $binaries; do + for linked_lib in $(otool -L $binary | tail -n +2 | awk '{ print $1 }'); do + if [ "$(basename $binary)" != "$(basename $linked_lib)" ] && + [ -f $lib_dir/$(basename $linked_lib) ]; then + lib_change_path $target/$(basename $linked_lib) $binary + fi + done + done +} + +function lib_change_siblings +{ + # This is a wrapper ontop lib_change_path: all libraries inside a given + # 'lib_dir' that are linked to libraries located in that same 'lib_dir' can + # be automatically adjusted. + + local lib_dir=$1 + + for lib in $lib_dir/*.dylib; do + lib_reset_id $lib + for linked_lib in $(otool -L $lib | tail -n +2 | awk '{ print $1 }'); do + if [ "$(basename $lib)" != "$(basename $linked_lib)" ] && + [ -f $lib_dir/$(basename $linked_lib) ]; then + lib_change_path @loader_path/$(basename $linked_lib) $lib + fi + done + done +} + +function lib_reset_id +{ + local lib=$1 + + case "$LIB_RESET_ID" in + basename) + install_name_tool -id $(basename $lib) $lib + ;; + canonical) + install_name_tool -id $(readlinkf $lib) $lib + ;; + keep) + : # don't do anything + ;; + *) + echo_e "invalid value for LIB_RESET_ID: $LIB_RESET_ID" + ;; + esac +} + +function lib_add_rpath +{ + local rpath=$1 + local binary=$2 + + install_name_tool -add_rpath "$rpath" "$binary" +} + +function lib_clear_rpath +{ + local binary=$1 + + for rpath in $(otool -l $binary | grep -A2 LC_RPATH | grep -E "^[ ]+path" | awk '{ print $2 }'); do + install_name_tool -delete_rpath $rpath $binary + done +} + +function lib_replace_path +{ + local source=$1 + local target=$2 + local binary=$3 + + for lib in $(lib_get_linked $binary); do + if [[ $lib =~ $source ]]; then + lib_change_path @rpath/$(basename $lib) $binary + fi + done +} + +function lib_get_linked +{ + local binary=$1 # can be executable or library + + #echo_d "binary: $binary" + + local filter # we need to distinguish between executable and library + + local file_type + file_type=$(file "$binary") + if [[ $file_type = *"shared library"* ]]; then + filter="-v $(otool -D "$binary" | tail -n 1)" # exclude library id + elif [[ $file_type = *"executable"* ]]; then + filter="-E [.]+" # include everything + else + echo_w "neither shared library nor executable: $binary" + return 1 + fi + + # since we're not echoing this, output will be newline-separated + # shellcheck disable=SC2086 # need word splitting for arguments + otool -L "$binary" | grep " " | grep $filter | awk '{ print $1 }' +} + +### aliases #################################################################### + +# Nothing here. + +### main ####################################################################### + +# Nothing here. |