2 # ### ### ### ######### ######### #########
5 # Heuristics to assemble a platform identifier from publicly available
6 # information. The identifier describes the platform of the currently
7 # running tcl shell. This is a mixture of the runtime environment and
8 # of build-time properties of the executable itself.
11 # <1> A tcl shell executing on a x86_64 processor, but having a
12 # wordsize of 4 was compiled for the x86 environment, i.e. 32
13 # bit, and loaded packages have to match that, and not the
16 # <2> The hp/solaris 32/64 bit builds of the core cannot be
17 # distinguished by looking at tcl_platform. As packages have to
18 # match the 32/64 information we have to look in more places. In
19 # this case we inspect the executable itself (magic numbers,
20 # i.e. fileutil::magic::filetype).
22 # The basic information used comes out of the 'os' and 'machine'
23 # entries of the 'tcl_platform' array. A number of general and
24 # os/machine specific transformation are applied to get a canonical
28 # Only the first element of 'os' is used - we don't care whether we
29 # are on "Windows NT" or "Windows XP" or whatever.
37 # % x86_64 + wordSize 4 => x86 code
40 # % AIX are always powerpc machines
41 # % HP-UX 9000/800 etc means parisc
42 # % linux has to take glibc version into account
43 # % sunos -> solaris, and keep version number
45 # NOTE: A platform like linux glibc 2.3, which can use glibc 2.2 stuff
46 # has to provide all possible allowed platform identifiers when
47 # searching search. Ditto a solaris 2.8 platform can use solaris 2.6
48 # packages. Etc. This is handled by the other procedure, see below.
50 # ### ### ### ######### ######### #########
53 namespace eval ::platform {}
55 # ### ### ### ######### ######### #########
58 # -- platform::generic
60 # Assembles an identifier for the generic platform. It leaves out
61 # details like kernel version, libc version, etc.
63 proc ::platform::generic {} {
66 set plat [string tolower [lindex $tcl_platform(os) 0]]
67 set cpu $tcl_platform(machine)
69 switch -glob -- $cpu {
78 if {$tcl_platform(wordSize) == 4} {
79 # See Example <1> at the top of this file.
90 if {$tcl_platform(wordSize) == 4} {
99 if {$cpu eq "amd64"} {
100 # Do not check wordSize, win32-x64 is an IL32P64 platform.
106 if {$cpu ne "ia64"} {
107 if {$tcl_platform(wordSize) == 8} {
114 # Correctly identify the cpu when running as a 64bit
115 # process on a machine with a 32bit kernel
116 if {$cpu eq "ix86"} {
117 if {$tcl_platform(wordSize) == 8} {
124 if {$tcl_platform(wordSize) == 8} {
130 if {$cpu ne "ia64"} {
132 if {$tcl_platform(wordSize) == 8} {
142 return "${plat}-${cpu}"
145 # -- platform::identify
147 # Assembles an identifier for the exact platform, by extending the
148 # generic identifier. I.e. it adds in details like kernel version,
149 # libc version, etc., if they are relevant for the loading of
150 # packages on the platform.
152 proc ::platform::identify {} {
156 regexp {^([^-]+)-([^-]+)$} $id -> plat cpu
160 regsub {^5} $tcl_platform(osVersion) 2 text
162 return "${plat}-${cpu}"
165 set major [lindex [split $tcl_platform(osVersion) .] 0]
168 append plat 10.$major
169 return "${plat}-${cpu}"
173 # Look for the libc*.so and determine its version
174 # (libc5/6, libc6 further glibc 2.X)
178 if {[file exists /lib64] && [file isdirectory /lib64]} {
184 set libclist [lsort [glob -nocomplain -directory $base libc*]]
185 if {[llength $libclist]} {
186 set libc [lindex $libclist 0]
188 # Try executing the library first. This should suceed
189 # for a glibc library, and return the version
193 set vdata [lindex [split [exec $libc] \n] 0]
195 regexp {([0-9]+(\.[0-9]+)*)} $vdata -> v
196 foreach {major minor} [split $v .] break
197 set v glibc${major}.${minor}
199 # We had trouble executing the library. We are now
200 # inspecting its name to determine the version
201 # number. This code by Larry McVoy.
203 if {[regexp -- {libc-([0-9]+)\.([0-9]+)} $libc -> major minor]} {
204 set v glibc${major}.${minor}
209 return "${plat}-${cpu}"
216 # -- platform::patterns
218 # Given an exact platform identifier, i.e. _not_ the generic
219 # identifier it assembles a list of exact platform identifier
220 # describing platform which should be compatible with the
223 # I.e. packages for all platforms in the result list should be
224 # loadable on the specified platform.
226 # << Should we add the generic identifier to the list as well ? In
227 # general it is not compatible I believe. So better not. In many
228 # cases the exact identifier is identical to the generic one
232 proc ::platform::patterns {id} {
234 if {$id eq "tcl"} {return $res}
236 switch -glob -- $id {
238 if {[regexp {solaris([^-]*)-(.*)} $id -> v cpu]} {
239 if {$v eq ""} {return $id}
240 foreach {major minor} [split $v .] break
242 for {set j $minor} {$j >= 6} {incr j -1} {
243 lappend res solaris${major}.${j}-${cpu}
248 if {[regexp {linux-glibc([^-]*)-(.*)} $id -> v cpu]} {
249 foreach {major minor} [split $v .] break
251 for {set j $minor} {$j >= 0} {incr j -1} {
252 lappend res linux-glibc${major}.${j}-${cpu}
258 if {[regexp {macosx([^-]*)-(.*)} $id -> v cpu]} {
260 foreach {major minor} [split $v .] break
262 # Add 10.5 to 10.minor to patterns.
264 for {set j $minor} {$j >= 5} {incr j -1} {
265 lappend res macosx${major}.${j}-${cpu}
266 lappend res macosx${major}.${j}-universal
269 # Add unversioned patterns for 10.3/10.4 builds.
270 lappend res macosx-${cpu}
271 lappend res macosx-universal
273 lappend res macosx-universal
276 lappend res macosx-universal
281 lappend res macosx-universal
284 lappend res tcl ; # Pure tcl packages are always compatible.
289 # ### ### ### ######### ######### #########
292 package provide platform 1.0.4
294 # ### ### ### ######### ######### #########
297 if {[info exists argv0] && ($argv0 eq [info script])} {
298 puts ====================================
300 puts ====================================
301 puts Generic\ identification:\ [::platform::generic]
302 puts Exact\ identification:\ \ \ [::platform::identify]
303 puts ====================================
304 puts Search\ patterns:
305 puts *\ [join [::platform::patterns [::platform::identify]] \n*\ ]
306 puts ====================================