/[gentoo-x86]/eclass/linux-info.eclass
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Revision 1.3 Revision 1.7
1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2004 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.3 2004/11/27 11:26:52 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.7 2004/12/05 12:46:58 johnm Exp $
4# 4#
5# This eclass provides functions for querying the installed kernel 5# This eclass provides functions for querying the installed kernel
6# source version, selected kernel options etc. 6# source version, selected kernel options etc.
7# 7#
8 8
12# Overwritable environment Var's 12# Overwritable environment Var's
13# --------------------------------------- 13# ---------------------------------------
14KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 14KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}"
15 15
16 16
17# Pulled from eutils as it might be more useful only being here since
18# very few ebuilds which dont use this eclass will ever ever use these functions
19set_arch_to_kernel() {
20 export PORTAGE_ARCH="${ARCH}"
21 case ${ARCH} in
22 x86) export ARCH="i386";;
23 amd64) export ARCH="x86_64";;
24 hppa) export ARCH="parisc";;
25 mips) export ARCH="mips";;
26 *) export ARCH="${ARCH}";;
27 esac
28}
29
30# set's ARCH back to what portage expects
31set_arch_to_portage() {
32 export ARCH="${PORTAGE_ARCH}"
33}
17 34
18# File Functions 35# File Functions
19# --------------------------------------- 36# ---------------------------------------
20 37
21# getfilevar accepts 2 vars as follows: 38# getfilevar accepts 2 vars as follows:
22# getfilevar <VARIABLE> <CONFIGFILE> 39# getfilevar <VARIABLE> <CONFIGFILE>
23 40
24getfilevar() { 41getfilevar() {
25local ERROR 42local ERROR workingdir basefname basedname xarch
26 ERROR=0 43 ERROR=0
27 44
28 [ -z "${1}" ] && ERROR=1 45 [ -z "${1}" ] && ERROR=1
29 [ -z "${2}" ] && ERROR=1
30 [ ! -f "${2}" ] && ERROR=1 46 [ ! -f "${2}" ] && ERROR=1
31 47
32 if [ "${ERROR}" = 1 ] 48 if [ "${ERROR}" = 1 ]
33 then 49 then
50 ebeep
51 echo -e "\n"
34 eerror "getfilevar requires 2 variables, with the second a valid file." 52 eerror "getfilevar requires 2 variables, with the second a valid file."
35 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 53 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
36 else 54 else
37 grep -e "^$1[= ]" $2 | sed 's: = :=:' | cut -d= -f2- 55 workingdir=${PWD}
56 basefname=$(basename ${2})
57 basedname=$(dirname ${2})
58 xarch=${ARCH}
59 unset ARCH
60
61 cd ${basedname}
62 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \
63 make -f - e 2>/dev/null
64 cd ${workingdir}
65
66 ARCH=${xarch}
38 fi 67 fi
39} 68}
40 69
41getfilevar_isset() { 70linux_chkconfig_present() {
42local RESULT 71local RESULT
43 RESULT="$(getfilevar ${1} ${2})" 72 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
44 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 73 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
45} 74}
46 75
47getfilevar_ismodule() { 76linux_chkconfig_module() {
48local RESULT 77local RESULT
49 RESULT="$(getfilevar ${1} ${2})" 78 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
50 [ "${RESULT}" = "m" ] && return 0 || return 1 79 [ "${RESULT}" = "m" ] && return 0 || return 1
51} 80}
52 81
53getfilevar_isbuiltin() { 82linux_chkconfig_builtin() {
54local RESULT 83local RESULT
55 RESULT="$(getfilevar ${1} ${2})" 84 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
56 [ "${RESULT}" = "y" ] && return 0 || return 1 85 [ "${RESULT}" = "y" ] && return 0 || return 1
86}
87
88linux_chkconfig_string() {
89 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config"
57} 90}
58 91
59# Versioning Functions 92# Versioning Functions
60# --------------------------------------- 93# ---------------------------------------
61 94
95 fi 128 fi
96 return ${RESULT} 129 return ${RESULT}
97} 130}
98 131
99get_version() { 132get_version() {
133 local kbuild_output
134
100 # no need to execute this twice assuming KV_FULL is populated. 135 # no need to execute this twice assuming KV_FULL is populated.
101 # we can force by unsetting KV_FULL 136 # we can force by unsetting KV_FULL
102 if [ -n "${KV_FULL}" ] 137 [ -n "${KV_FULL}" ] && return
103 then
104 # Lets keep this quiet eh?
105 # einfo "\${KV_FULL} is already set. Not running get_version again"
106 return
107 fi
108 138
109 # if we dont know KV_FULL, then we need too. 139 # if we dont know KV_FULL, then we need too.
110 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 140 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
111 unset KV_DIR 141 unset KV_DIR
112 142
116 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 146 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
117 147
118 if [ -z "${KV_DIR}" ] 148 if [ -z "${KV_DIR}" ]
119 then 149 then
120 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 150 eerror "Unable to find kernel sources at ${KERNEL_DIR}"
121 die 151 einfo "This package requires Linux sources."
152 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
153 einfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
154 einfo "(or the kernel you wish to build against)."
155 einfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
156 else
157 einfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
122 fi 158 fi
159 die "Cannot locate Linux sources at ${KERNEL_DIR}"
160 fi
161
162 einfo "Found kernel source directory:"
163 einfo " ${KV_DIR}"
164
165 if [ ! -s "${KV_DIR}/Makefile" ]
166 then
167 eerror "Could not find a Makefile in the kernel source directory."
168 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
169 die "Makefile not found in ${KV_DIR}"
170 fi
171
172 if [ ! -s "${KV_DIR}/.config" ]
173 then
174 eerror "Could not find a usable .config in the kernel source directory."
175 eerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources"
176 die ".config not found in ${KV_DIR}"
177 fi
178
179 # OK so now we know our sources directory, but they might be using
180 # KBUILD_OUTPUT, and we need this for .config and localversions-*
181 # so we better find it eh?
182 # do we pass KBUILD_OUTPUT on the CLI?
183 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
184
185 # And if we didn't pass it, we can take a nosey in the Makefile
186 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)"
187 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
123 188
124 # And contrary to existing functions I feel we shouldn't trust the 189 # And contrary to existing functions I feel we shouldn't trust the
125 # directory name to find version information as this seems insane. 190 # directory name to find version information as this seems insane.
126 # so we parse ${KV_DIR}/Makefile 191 # so we parse ${KV_DIR}/Makefile
127 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 192 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)"
128 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 193 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)"
129 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 194 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)"
130 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 195 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)"
196
197 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
198 then
199 eerror "Could not detect kernel version."
200 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
201 die "Could not parse version info from ${KV_DIR}/Makefile"
202 fi
203
131 # and in newer versions we can also pull LOCALVERSION if it is set. 204 # and in newer versions we can also pull LOCALVERSION if it is set.
132 KV_LOCAL="$(cat ${KV_DIR}/localversion* 2>/dev/null)$(getfilevar CONFIG_LOCALVERSION ${KV_DIR}/.config | sed 's:"::g')" 205 # but before we do this, we need to find if we use a different object directory.
206 # This *WILL* break if the user is using localversions, but we assume it was
207 # caught before this if they are.
208 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \
209 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}"
210
211 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
212 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
213 if [ -n "${KV_OUT_DIR}" ];
214 then
215 einfo "Found kernel object directory:"
216 einfo " ${KV_OUT_DIR}"
217
218 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)"
219 fi
220 # and if we STILL haven't got it, then we better just set it to KV_DIR
221 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
222
223 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)"
224 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
225 KV_LOCAL="${KV_LOCAL//\"/}"
133 226
134 # And we should set KV_FULL to the full expanded version 227 # And we should set KV_FULL to the full expanded version
135 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 228 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
136 229
137 if [ -z "${KV_FULL}" ]
138 then
139 eerror "We are unable to find a usable kernel source tree in ${KV_DIR}"
140 eerror "Please check a kernel source exists in this directory."
141 die
142 else
143 einfo "Found kernel source directory:"
144 einfo " ${KV_DIR}"
145 einfo "with sources for kernel version:" 230 einfo "Found sources for kernel version:"
146 einfo " ${KV_FULL}" 231 einfo " ${KV_FULL}"
147 fi
148} 232}
149 233
150 234
151 235
152 236
155 239
156check_kernel_built() { 240check_kernel_built() {
157 # if we haven't determined the version yet, we need too. 241 # if we haven't determined the version yet, we need too.
158 get_version; 242 get_version;
159 243
160 if [ ! -f "${KV_DIR}/System.map" ] 244 if [ ! -f "${KV_OUT_DIR}/System.map" ]
161 then 245 then
162 eerror "These sources have not yet been compiled." 246 eerror "These sources have not yet been compiled."
163 eerror "We cannot build against an uncompiled tree." 247 eerror "We cannot build against an uncompiled tree."
164 eerror "To resolve this, please type the following:" 248 eerror "To resolve this, please type the following:"
165 eerror 249 eerror
174 258
175check_modules_supported() { 259check_modules_supported() {
176 # if we haven't determined the version yet, we need too. 260 # if we haven't determined the version yet, we need too.
177 get_version; 261 get_version;
178 262
179 getfilevar_isset CONFIG_MODULES ${KV_DIR}/.config 263 if ! linux_chkconfig_builtin "MODULES"
180 if [ "$?" != 0 ]
181 then 264 then
182 eerror "These sources do not support loading external modules." 265 eerror "These sources do not support loading external modules."
183 eerror "to be able to use this module please enable \"Loadable modules support\"" 266 eerror "to be able to use this module please enable \"Loadable modules support\""
184 eerror "in your kernel, recompile and then try merging this module again." 267 eerror "in your kernel, recompile and then try merging this module again."
185 die No support for external modules in ${KV_FUll} config 268 die "No support for external modules in ${KV_FULL} config"
186 fi 269 fi
187} 270}
188 271
189check_extra_config() { 272check_extra_config() {
190local config negate error 273local config negate error local_error
191 274
192 # if we haven't determined the version yet, we need too. 275 # if we haven't determined the version yet, we need too.
193 get_version; 276 get_version;
194 277
195 einfo "Checking for suitable kernel configuration options" 278 einfo "Checking for suitable kernel configuration options"
197 do 280 do
198 negate="${config:0:1}" 281 negate="${config:0:1}"
199 if [ "${negate}" == "!" ]; 282 if [ "${negate}" == "!" ];
200 then 283 then
201 config="${config:1}" 284 config="${config:1}"
202 if getfilevar_isset ${config} ${KV_DIR}/.config ; 285 if linux_chkconfig_present ${config}
203 then 286 then
287 local_error="${config}_ERROR"
288 local_error="${!local_error}"
289 [ -n "${local_error}" ] && eerror " ${local_error}" || \
204 eerror " ${config}:\tshould not be set in the kernel configuration, but it is." 290 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
205 error=1 291 error=1
206 fi 292 fi
207 else 293 else
208 if ! getfilevar_isset ${config} ${KV_DIR}/.config ; 294 if ! linux_chkconfig_present ${config}
209 then 295 then
296 local_error="${config}_ERROR"
297 local_error="${!local_error}"
298 [ -n "${local_error}" ] && eerror " ${local_error}" || \
210 eerror " ${config}:\tshould be set in the kernel configuration, but isn't" 299 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't"
211 error=1 300 error=1
212 fi 301 fi
213 fi 302 fi
214 done 303 done
215 304
216 if [ -n "${error}" ] ; 305 if [ -n "${error}" ] ;
217 then 306 then
218 eerror "Please check to make sure these options are set correctly." 307 eerror "Please check to make sure these options are set correctly."
219 eerror "Once you have satisfied these options, please try merging" 308 eerror "Once you have satisfied these options, please try merging"
220 eerror "this package again." 309 eerror "this package again."
221 die Incorrect kernel configuration options 310 die "Incorrect kernel configuration options"
222 fi 311 fi
223} 312}
224 313
225check_zlibinflate() { 314check_zlibinflate() {
226 # if we haven't determined the version yet, we need too. 315 # if we haven't determined the version yet, we need too.
258 347
259 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 348 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
260 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 349 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
261 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 350 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
262 (( LINENO_END = $LINENO_END - 1 )) 351 (( LINENO_END = $LINENO_END - 1 ))
263 SYMBOLS="$(head -n $LINENO_END ${KERNEL_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 352 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
264 353
265 # okay, now we have a list of symbols 354 # okay, now we have a list of symbols
266 # we need to check each one in turn, to see whether it is set or not 355 # we need to check each one in turn, to see whether it is set or not
267 for x in $SYMBOLS ; do 356 for x in $SYMBOLS ; do
268 if [ "${!x}" = "y" ]; then 357 if [ "${!x}" = "y" ]; then

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