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#!/bin/sh # -*- mode: shell-script; sh-shell: "/bin/sh" -*- # Copyright (C) 2018, 2021 g10 Code GmbH # # This file is free software; as a special exception the author gives # unlimited permission to copy and/or distribute it, with or without # modifications, as long as this notice is preserved. # # This file is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY, to the extent permitted by law; without even the # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # SPDX-License-Identifier: FSFULLR #### start of functions for this script # # Bourne shell functions for config file in pkg-config style, so that # we can share such a config file between pkg-config and script # # # get_var: Get the variable value of NAME # # Variables are recorded in the shell variables named "VAR_<NAME>" # get_var () { ___name=$1 eval echo \$VAR_$___name } # # get_attr: Get the attribute value of KEY # # Attributes are recorded in the shell variables named "ATTR_<KEY>" # get_attr () { ___name=$1 eval echo \$ATTR_$___name } # variant of get_attr for list (separated by ',') get_attr_l () { (IFS=', '; echo "$(get_attr $1)") } # Remove ${varname} part in the beginning of a string. remove_var_expr () { ___varname=$1 shift expr "$*" : "\${$___varname}\\(.*\\)" } # Given a string, substitute variables. substitute_vars () { __string="$1" __varname="" __result="" while [ -n "$__string" ]; do case "$__string" in \$\$*) __result="$__result\$" __string="${__string#\$\$}" ;; \${*}*) __varname="${__string#\$\{}" __varname="${__varname%%\}*}" __result="$__result$(get_var $__varname)" __string=$(remove_var_expr $__varname $__string) ;; *) __result="$__result$(printf %c "$__string")" __string="${__string#$(printf %c "$__string")}" ;; esac done echo "$__result" } # # Read a config from stdin # # Variables: # For VAR=VALUE, value is stored in the shell variable VAR_*. # # Attributes: # For KEY: VALUE, value is stored in the shell variable ATTR_*. # read_config_from_stdin () { _filename=$1 _line="" _varname="" _value="" _key="" _reading_attrs="" while read _line; do if [ -z "$_line" ]; then _reading_attrs=yes continue elif [ -z "$_reading_attrs" ]; then case "$_line" in *=*) _varname="${_line%%=*}" _value="${_line#*=}" VAR_list="$VAR_list${VAR_list:+ }VAR_$_varname" read VAR_$_varname <<EOF1 $(substitute_vars "$_value") EOF1 continue ;; *) _reading_attrs=yes ;; esac fi if [ -n "$_reading_attrs" ]; then case "$_line" in *:\ *) _key="${_line%%:\ *}" _value="${_line#*:\ }" if expr "$_key" : ".*\..*" >/dev/null; then _key="${_key%.*}_${_key#*.}" fi ATTR_list="$ATTR_list${ATTR_list:+ }ATTR_$_key" read ATTR_$_key <<EOF2 $(substitute_vars "$_value") EOF2 ;; *:|*:\ ) ;; *) echo "Error reading $_filename: $_line" 1>&2 exit 1 ;; esac fi done } find_file_in_path () { _f=$1 _p=$2 _saved_IFS="$IFS" _arg="" IFS=":" # On Windows it should be ";"??? for _arg in $_p; do if [ -r $_arg/$_f ]; then RESULT="$_arg/$_f" IFS="$_saved_IFS" return 0 fi done IFS="$_saved_IFS" RESULT="" return 1 } read_config_file () { if ! find_file_in_path $1.pc $2; then if [ -z "$want_exists" ]; then echo "Can't find $1.pc" 1>&2 fi exit 1 fi read_config_from_stdin $RESULT < $RESULT } cleanup_vars_attrs () { eval unset $VAR_list VAR_list eval unset $ATTR_list ATTR_list } not_listed_yet () { ___m=$1 ___arg="" shift for ___arg; do if [ $___m = $___arg ]; then return 1 fi done return 0 } list_only_once () { __result="" __arg="" for __arg; do if not_listed_yet $__arg $__result; then __result="$__result${__result:+ }$__arg" fi done echo $__result } list_only_once_for_libs () { __result="" __rev_list="" __arg="" # Scan the list and eliminate duplicates for non-"-lxxx" # the resulted list is in reverse order for __arg; do case "$__arg" in -l*) # As-is __rev_list="$__arg${__rev_list:+ }$__rev_list" ;; *) if not_listed_yet $__arg $__rev_list; then __rev_list="$__arg${__rev_list:+ }$__rev_list" fi ;; esac done # Scan again for __arg in $__rev_list; do case "$__arg" in -l*) if not_listed_yet $__arg $__result; then __result="$__arg${__result:+ }$__result" fi ;; *) # As-is __result="$__arg${__result:+ }$__result" ;; esac done echo $__result } arg1_is_same () { [ "$1" = "=" -o "$1" = ">=" -o "$1" = "<=" ] } arg1_is_less () { [ "$1" = "!=" -o "$1" = "<" -o "$1" = "<=" ] } arg1_is_great () { [ "$1" = "!=" -o "$1" = ">" -o "$1" = ">=" ] } # # Evaluate comparison between versions in RPM way # eval_compare_version () { ___str1="$1" ___cmp="$2" ___str2="$3" ___char1="" ___char2="" ___chunk1="" ___chunk2="" while [ -n "$___str1" -a -n "$___str2" ]; do # Trim anything that's not alnum or tilde from the front ___str1="$(expr "$___str1" : '[^0-9A-Za-z~]*\(.*\)')" ___str2="$(expr "$___str2" : '[^0-9A-Za-z~]*\(.*\)')" # Get the first character ___char1=${___str1%${___str1#?}} ___char2=${___str2%${___str2#?}} if [ "$___char1" = ~ -o "$___char2" = ~ ]; then if [ "$___char1" != ~ ]; then arg1_is_great $___cmp return fi if [ "$___char2" != ~ ]; then arg1_is_less $___cmp return fi ___str1=${___str1#~} ___str2=${___str2#~} continue fi if [ -z "$___char1" -o -z "$___char2" ]; then break fi case "$___char1$___char2" in [0-9][A-Za-z]) arg1_is_great $___cmp return ;; [A-Za-z][0-9]) arg1_is_less $___cmp return ;; [0-9][0-9]) ___chunk1="$(expr "$___str1" : '\([0-9]*\)')" ___chunk2="$(expr "$___str2" : '\([0-9]*\)')" ;; [A-Za-z][A-Za-z]) ___chunk1="$(expr "$___str1" : '\([A-Za-z]*\)')" ___chunk2="$(expr "$___str2" : '\([A-Za-z]*\)')" ;; esac # Compare chunks numerically if digits, or lexicographically if expr "$___chunk1" "!=" "$___chunk2" >/dev/null; then if expr "$___chunk1" ">" "$___chunk2" >/dev/null; then arg1_is_great $___cmp return else arg1_is_less $___cmp return fi fi # Remove the chunk ___str1="${___str1#$___chunk1}" ___str2="${___str2#$___chunk2}" done # Either STR1, STR2 or both is empty here if [ -n "$___str1" ]; then case "$___str1" in ~*) arg1_is_less $___cmp ;; *) arg1_is_great $___cmp ;; esac elif [ -n "$___str2" ]; then case "$___str2" in ~*) arg1_is_great $___cmp ;; *) arg1_is_less $___cmp ;; esac else arg1_is_same $___cmp fi } # # Recursively solve package dependencies # # Result is in the PKG_LIST variable # all_required_config_files () { all_list="" new_list="" p="" pkg="" cmp="" list=$* while [ -n "$list" ]; do for p in $list; do if [ -z "$pkg" ]; then pkg=$p elif [ -z "$cmp" ]; then case "$p" in "="|"!="|"<"|">"|"<="|">=") cmp=$p ;; *) read_config_file $pkg $PKG_CONFIG_PATH all_list="$all_list${all_list:+ }$pkg" new_list="$new_list${new_list:+ }$(get_attr_l Requires)" if [ -n "$enable_static" ]; then new_list="$new_list${new_list:+ }$(get_attr_l Requires_private)" fi cleanup_vars_attrs pkg=$p ;; esac else read_config_file $pkg $PKG_CONFIG_PATH if ! eval_compare_version "$(get_attr Version)" $cmp $p; then echo "Version mismatch for $pkg $cmp $p: $(get_attr Version)" 1>&2 exit 1 fi all_list="$all_list${all_list:+ }$pkg" new_list="$new_list${new_list:+ }$(get_attr_l Requires)" if [ -n "$enable_static" ]; then new_list="$new_list${new_list:+ }$(get_attr_l Requires_private)" fi cleanup_vars_attrs pkg="" cmp="" fi done if [ -n "$cmp" ]; then echo "No version after comparison operator ($cmp): $pkg" 1>&2 exit 1 elif [ -n "$pkg" ]; then read_config_file $pkg $PKG_CONFIG_PATH all_list="$all_list${all_list:+ }$pkg" new_list="$new_list${new_list:+ }$(get_attr_l Requires)" if [ -n "$enable_static" ]; then new_list="$new_list${new_list:+ }$(get_attr_l Requires_private)" fi cleanup_vars_attrs fi list="$new_list" new_list="" done PKG_LIST=$(list_only_once $all_list) } # # Modify -I or -L by PKG_CONFIG_SYSROOT_DIR variable # sysroot () { _opt="$1" _result="" shift while [ $# -gt 0 ]; do if [ $1 = $_opt ]; then _result="$_result${_result:+ }$_opt" shift _result="$_result $PKG_CONFIG_SYSROOT_DIR$1" elif expr "x$1" : "^x$_opt" >/dev/null; then _result="$_result${_result:+ }$_opt$PKG_CONFIG_SYSROOT_DIR$(expr "x$1" : "^x$_opt\(.*\)")" else _result="$_result${_result:+ }$1" fi shift done echo "$_result" } # Show usage usage () { cat <<EOF Usage: gpgrt-config [--libdir=LIBDIR] [OPTIONS] MODULES Options: [--exists] [--modversion] [--libs] [--cflags] [--static] [--variable=VARNAME] EOF exit $1 } #### end of functions for this script myname=${0##*/} if [ $myname = gpgrt-config ]; then default_module="gpg-error" else default_module=${myname%-config} fi # First stage to process --libdir option libdir="" while test $# -gt 0; do case $1 in --libdir=*) libdir=${1#--libdir=} shift ;; *) break ;; esac done if env | grep '^PKG_CONFIG_LIBDIR=$' >/dev/null 2>&1; then # The variable set as empty, we use PKG_CONFIG_PATH in this case, # ignoring --libdir option if [ -z "$PKG_CONFIG_PATH" ]; then echo "Please have valid PKG_CONFIG_PATH if PKG_CONFIG_LIBDIR is empty" 1>&2 exit 1 fi else if [ -n "$libdir" ]; then # --libdir option is available, it overrides existing PKG_CONFIG_LIBDIR PKG_CONFIG_LIBDIR=$libdir/pkgconfig fi if [ -z "$PKG_CONFIG_LIBDIR" ]; then if [ -z "$PKG_CONFIG_PATH" ]; then echo "Please use --libdir=LIBDIR option or set PKG_CONFIG_LIBDIR" 1>&2 echo "Or set PKG_CONFIG_PATH" 1>&2 exit 1 fi else # PKG_CONFIG_LIBDIR is available here # Modify PKG_CONFIG_PATH, prepending PKG_CONFIG_LIBDIR PKG_CONFIG_PATH="$PKG_CONFIG_LIBDIR${PKG_CONFIG_PATH:+:}$PKG_CONFIG_PATH" fi fi # PKG_CONFIG_PATH is ready here # if test $# -eq 0; then usage 1 1>&2 fi # Second stage to do the main functionality module_list="" want_var="" want_attr="" want_cflags="" want_libs="" want_exists="" enable_static="" cflags="" libs="" mtcflags="" mtlibs="" output="" mt="no" VAR_list=VAR_pc_sysrootdir if [ -z "$PKG_CONFIG_SYSROOT_DIR" ]; then VAR_pc_sysrootdir="/" else VAR_pc_sysrootdir="$PKG_CONFIG_SYSROOT_DIR" fi while test $# -gt 0; do case $1 in #### pkg-config incompatible options: begin --prefix) # In future, use --variable=prefix instead. want_var=prefix ;; --exec-prefix) # In future, use --variable=exec_prefix instead. want_var=exec_prefix ;; --version) # In future, use --modversion instead. want_attr=Version ;; --api-version) # In future, use --variable=api_version instead. want_var=api_version ;; --host) # In future, use --variable=host instead. want_var=host ;; --mt) # In future, use --variable=mtcflags or --variable=mtlibs. mt=yes ;; #### pkg-config incompatible options: end --modversion) want_attr=Version ;; --exists) want_exists=yes ;; --cflags) want_cflags=yes ;; --libs) want_libs=yes ;; --static) enable_static=yes ;; --variable=*) want_var=${1#*=} ;; --help) usage 0 ;; --*) usage 1 1>&2 ;; *) # Modules module_list="$module_list${module_list:+ }$1" ;; esac shift done if [ -z "$module_list" ]; then module_list=$default_module elif expr "$module_list" : "=\|!=\|<\|>\|<=\|>=" >/dev/null; then module_list="$default_module $module_list" fi all_required_config_files $module_list for p in $PKG_LIST; do read_config_file $p $PKG_CONFIG_PATH # For want_var or want_attr, get it from the first package if [ -n "$want_var" ]; then output="$(get_var $want_var)" break elif [ -n "$want_attr" ]; then output="$(get_attr $want_attr)" break else cflags="$cflags${cflags:+ }$(get_attr Cflags)" libs="$libs${libs:+ }$(get_attr Libs)" if [ -n "$enable_static" ]; then libs="$libs${libs:+ }$(get_attr Libs_private)" fi if [ $p = "gpg-error" ]; then mtcflags="$(get_var mtcflags)" mtlibs="$(get_var mtlibs)" fi fi cleanup_vars_attrs done if [ -z "$want_var" -a -z "$want_attr" ]; then if [ -n "$want_cflags" ]; then output="$output${output:+ }$(sysroot -I $(list_only_once $cflags))" # Backward compatibility to old gpg-error-config if [ $mt = yes -a -n "$mtcflags" ]; then output="$output${output:+ }$mtcflags" fi fi if [ -n "$want_libs" ]; then output="$output${output:+ }$(sysroot -L $(list_only_once_for_libs $libs))" # Backward compatibility to old gpg-error-config if [ $mt = yes -a -n "$mtlibs" ]; then output="$output${output:+ }$mtlibs" fi fi fi if [ -z "$want_exists" ]; then echo "$output" fi exit 0