4 # This script must be able to run with bash-3.1, so it can't use
5 # associative arrays. Instead, it emulates them using 'eval'. It
6 # can however use indexed arrays, supported since at least bash-3.0.
8 # The names of the br2-external trees, once validated.
9 declare -a BR2_EXT_NAMES
11 # URL to manual for help in converting old br2-external trees.
12 # Escape '#' so that make does not consider it a comment.
13 MANUAL_URL='https://buildroot.org/manual.html\#br2-external-converting'
17 local br2_ext ofile ofmt
19 while getopts :hkmo: OPT; do
22 o) ofile="${OPTARG}";;
25 :) error "option '%s' expects a mandatory argument\n" "${OPTARG}";;
26 \?) error "unknown option '%s'\n" "${OPTARG}";;
29 # Forget options; keep only positional args
35 *) error "no output format specified (-m/-k)\n";;
37 if [ -z "${ofile}" ]; then
38 error "no output file specified (-o)\n"
43 # Trap any unexpected error to generate a meaningful error message
44 trap "error 'unexpected error while generating ${ofile}\n'" ERR
51 # Validates the br2-external trees passed as arguments. Makes each of
52 # them canonical and store them in the global arrays BR2_EXT_NAMES
55 # Note: since this script is always first called from Makefile context
56 # to generate the Makefile fragment before it is called to generate the
57 # Kconfig snippet, we're sure that any error in do_validate will be
58 # interpreted in Makefile context. Going up to generating the Kconfig
59 # snippet means that there were no error.
64 if [ ${#} -eq 0 ]; then
65 # No br2-external tree is valid
69 for br2_ext in "${@}"; do
70 do_validate_one "${br2_ext}"
76 local br2_name br2_desc n d
78 if [ ! -d "${br2_ext}" ]; then
79 error "'%s': no such file or directory\n" "${br2_ext}"
81 if [ ! -r "${br2_ext}" -o ! -x "${br2_ext}" ]; then
82 error "'%s': permission denied\n" "${br2_ext}"
84 if [ ! -f "${br2_ext}/external.desc" ]; then
85 error "'%s': does not have a name (in 'external.desc'). See %s\n" \
86 "${br2_ext}" "${MANUAL_URL}"
88 br2_name="$(sed -r -e '/^name: +(.*)$/!d; s//\1/' "${br2_ext}/external.desc")"
89 if [ -z "${br2_name}" ]; then
90 error "'%s/external.desc': does not define the name\n" "${br2_ext}"
92 # Only ASCII chars in [A-Za-z0-9_] are permitted
93 n="$(sed -r -e 's/[A-Za-z0-9_]//g' <<<"${br2_name}" )"
94 if [ -n "${n}" ]; then
95 # Escape '$' so that it gets printed
96 error "'%s': name '%s' contains invalid chars: '%s'\n" \
97 "${br2_ext}" "${br2_name//\$/\$\$}" "${n//\$/\$\$}"
99 eval d="\"\${BR2_EXT_PATHS_${br2_name}}\""
100 if [ -n "${d}" ]; then
101 error "'%s': name '%s' is already used in '%s'\n" \
102 "${br2_ext}" "${br2_name}" "${d}"
104 br2_desc="$(sed -r -e '/^desc: +(.*)$/!d; s//\1/' "${br2_ext}/external.desc")"
105 if [ ! -f "${br2_ext}/external.mk" ]; then
106 error "'%s/external.mk': no such file or directory\n" "${br2_ext}"
108 if [ ! -f "${br2_ext}/Config.in" ]; then
109 error "'%s/Config.in': no such file or directory\n" "${br2_ext}"
112 # Register this br2-external tree, use an absolute canonical path
113 br2_ext="$( cd "${br2_ext}"; pwd )"
114 BR2_EXT_NAMES+=( "${br2_name}" )
115 eval BR2_EXT_PATHS_${br2_name}="\"\${br2_ext}\""
116 eval BR2_EXT_DESCS_${br2_name}="\"\${br2_desc:-\${br2_name}}\""
119 # Generate the .mk snippet that defines makefile variables
120 # for the br2-external tree
122 local br2_name br2_ext
124 printf '#\n# Automatically generated file; DO NOT EDIT.\n#\n'
127 printf 'BR2_EXTERNAL ?='
128 for br2_name in "${BR2_EXT_NAMES[@]}"; do
129 eval br2_ext="\"\${BR2_EXT_PATHS_${br2_name}}\""
130 printf ' %s' "${br2_ext}"
134 printf 'BR2_EXTERNAL_NAMES = \n'
135 printf 'BR2_EXTERNAL_DIRS = \n'
136 printf 'BR2_EXTERNAL_MKS = \n'
138 if [ ${#BR2_EXT_NAMES[@]} -eq 0 ]; then
140 printf '# No br2-external tree defined.\n'
144 for br2_name in "${BR2_EXT_NAMES[@]}"; do
145 eval br2_desc="\"\${BR2_EXT_DESCS_${br2_name}}\""
146 eval br2_ext="\"\${BR2_EXT_PATHS_${br2_name}}\""
148 printf 'BR2_EXTERNAL_NAMES += %s\n' "${br2_name}"
149 printf 'BR2_EXTERNAL_DIRS += %s\n' "${br2_ext}"
150 printf 'BR2_EXTERNAL_MKS += %s/external.mk\n' "${br2_ext}"
151 printf 'export BR2_EXTERNAL_%s_PATH = %s\n' "${br2_name}" "${br2_ext}"
152 printf 'export BR2_EXTERNAL_%s_DESC = %s\n' "${br2_name}" "${br2_desc}"
156 # Generate the kconfig snippet for the br2-external tree.
158 local br2_name br2_ext
160 printf '#\n# Automatically generated file; DO NOT EDIT.\n#\n'
163 if [ ${#BR2_EXT_NAMES[@]} -eq 0 ]; then
164 printf '# No br2-external tree defined.\n'
168 printf 'menu "External options"\n'
171 for br2_name in "${BR2_EXT_NAMES[@]}"; do
172 eval br2_desc="\"\${BR2_EXT_DESCS_${br2_name}}\""
173 eval br2_ext="\"\${BR2_EXT_PATHS_${br2_name}}\""
174 if [ ${#BR2_EXT_NAMES[@]} -gt 1 ]; then
175 printf 'menu "%s"\n' "${br2_desc}"
177 printf 'comment "%s (in %s)"\n' "${br2_desc}" "${br2_ext}"
178 printf 'config BR2_EXTERNAL_%s_PATH\n' "${br2_name}"
180 printf '\tdefault "%s"\n' "${br2_ext}"
181 printf 'source "%s/Config.in"\n' "${br2_ext}"
182 if [ ${#BR2_EXT_NAMES[@]} -gt 1 ]; then
183 printf 'endmenu # %s\n' "${br2_name}"
188 printf "endmenu # User-provided options\n"
194 ${my_name} <-m|-k> -o FILE PATH
196 With -m, ${my_name} generates the makefile fragment that defines
197 variables related to the br2-external trees passed as positional
200 With -k, ${my_name} generates the kconfig snippet to include the
201 configuration options specified in the br2-external trees passed
202 as positional arguments.
204 Using -k and -m together is not possible. The last one wins.
207 -m Generate the makefile fragment.
209 -k Generate the kconfig snippet.
212 FILE in which to generate the kconfig snippet or makefile
221 error() { local fmt="${1}"; shift; printf "BR2_EXTERNAL_ERROR = ${fmt}" "${@}"; exit 1; }