18 changed files with 746 additions and 131 deletions
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|
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# -*- tcl -*- |
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# ### ### ### ######### ######### ######### |
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## Overview |
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|
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# Heuristics to assemble a platform identifier from publicly available |
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# information. The identifier describes the platform of the currently |
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# running tcl shell. This is a mixture of the runtime environment and |
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# of build-time properties of the executable itself. |
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# |
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# Examples: |
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# <1> A tcl shell executing on a x86_64 processor, but having a |
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# wordsize of 4 was compiled for the x86 environment, i.e. 32 |
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# bit, and loaded packages have to match that, and not the |
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# actual cpu. |
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# |
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# <2> The hp/solaris 32/64 bit builds of the core cannot be |
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# distinguished by looking at tcl_platform. As packages have to |
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# match the 32/64 information we have to look in more places. In |
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# this case we inspect the executable itself (magic numbers, |
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# i.e. fileutil::magic::filetype). |
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# |
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# The basic information used comes out of the 'os' and 'machine' |
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# entries of the 'tcl_platform' array. A number of general and |
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# os/machine specific transformation are applied to get a canonical |
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# result. |
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# |
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# General |
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# Only the first element of 'os' is used - we don't care whether we |
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# are on "Windows NT" or "Windows XP" or whatever. |
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# |
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# Machine specific |
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# % amd64 -> x86_64 |
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# % arm* -> arm |
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# % sun4* -> sparc |
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# % ia32* -> ix86 |
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# % intel -> ix86 |
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# % i*86* -> ix86 |
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# % Power* -> powerpc |
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# % x86_64 + wordSize 4 => x86 code |
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# |
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# OS specific |
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# % AIX are always powerpc machines |
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# % HP-UX 9000/800 etc means parisc |
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# % linux has to take glibc version into account |
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# % sunos -> solaris, and keep version number |
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# |
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# NOTE: A platform like linux glibc 2.3, which can use glibc 2.2 stuff |
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# has to provide all possible allowed platform identifiers when |
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# searching search. Ditto a solaris 2.8 platform can use solaris 2.6 |
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# packages. Etc. This is handled by the other procedure, see below. |
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|
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# ### ### ### ######### ######### ######### |
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## Requirements |
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|
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namespace eval ::platform {} |
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# ### ### ### ######### ######### ######### |
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## Implementation |
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|
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# -- platform::generic |
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# |
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# Assembles an identifier for the generic platform. It leaves out |
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# details like kernel version, libc version, etc. |
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proc ::platform::generic {} { |
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global tcl_platform |
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set plat [string tolower [lindex $tcl_platform(os) 0]] |
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set cpu $tcl_platform(machine) |
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switch -glob -- $cpu { |
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sun4* { |
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set cpu sparc |
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} |
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intel - |
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ia32* - |
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i*86* { |
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set cpu ix86 |
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} |
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x86_64 { |
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if {$tcl_platform(wordSize) == 4} { |
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# See Example <1> at the top of this file. |
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set cpu ix86 |
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} |
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} |
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ppc - |
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"Power*" { |
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set cpu powerpc |
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} |
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"arm*" { |
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set cpu arm |
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} |
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ia64 { |
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if {$tcl_platform(wordSize) == 4} { |
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append cpu _32 |
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} |
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} |
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} |
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|
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switch -glob -- $plat { |
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windows { |
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if {$tcl_platform(platform) == "unix"} { |
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set plat cygwin |
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} else { |
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set plat win32 |
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} |
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if {$cpu eq "amd64"} { |
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# Do not check wordSize, win32-x64 is an IL32P64 platform. |
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set cpu x86_64 |
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} |
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} |
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sunos { |
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set plat solaris |
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if {[string match "ix86" $cpu]} { |
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if {$tcl_platform(wordSize) == 8} { |
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set cpu x86_64 |
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} |
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} elseif {![string match "ia64*" $cpu]} { |
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# sparc |
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if {$tcl_platform(wordSize) == 8} { |
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append cpu 64 |
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} |
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} |
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} |
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darwin { |
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set plat macosx |
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# Correctly identify the cpu when running as a 64bit |
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# process on a machine with a 32bit kernel |
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if {$cpu eq "ix86"} { |
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if {$tcl_platform(wordSize) == 8} { |
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set cpu x86_64 |
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} |
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} |
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} |
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aix { |
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set cpu powerpc |
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if {$tcl_platform(wordSize) == 8} { |
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append cpu 64 |
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} |
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} |
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hp-ux { |
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set plat hpux |
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if {![string match "ia64*" $cpu]} { |
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set cpu parisc |
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if {$tcl_platform(wordSize) == 8} { |
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append cpu 64 |
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} |
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} |
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} |
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osf1 { |
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set plat tru64 |
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} |
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default { |
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set plat [lindex [split $plat _-] 0] |
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} |
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} |
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return "${plat}-${cpu}" |
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} |
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|
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# -- platform::identify |
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# |
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# Assembles an identifier for the exact platform, by extending the |
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# generic identifier. I.e. it adds in details like kernel version, |
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# libc version, etc., if they are relevant for the loading of |
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# packages on the platform. |
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proc ::platform::identify {} { |
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global tcl_platform |
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set id [generic] |
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regexp {^([^-]+)-([^-]+)$} $id -> plat cpu |
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switch -- $plat { |
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solaris { |
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regsub {^5} $tcl_platform(osVersion) 2 text |
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append plat $text |
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return "${plat}-${cpu}" |
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} |
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macosx { |
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set major [lindex [split $tcl_platform(osVersion) .] 0] |
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if {$major > 19} { |
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set minor [lindex [split $tcl_platform(osVersion) .] 1] |
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incr major -9 |
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append plat $major.[expr {$minor - 1}] |
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} else { |
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incr major -4 |
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append plat 10.$major |
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return "${plat}-${cpu}" |
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} |
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return "${plat}-${cpu}" |
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} |
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linux { |
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# Look for the libc*.so and determine its version |
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# (libc5/6, libc6 further glibc 2.X) |
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set v unknown |
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|
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# Determine in which directory to look. /lib, or /lib64. |
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# For that we use the tcl_platform(wordSize). |
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# |
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# We could use the 'cpu' info, per the equivalence below, |
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# that however would be restricted to intel. And this may |
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# be a arm, mips, etc. system. The wordsize is more |
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# fundamental. |
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# |
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# ix86 <=> (wordSize == 4) <=> 32 bit ==> /lib |
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# x86_64 <=> (wordSize == 8) <=> 64 bit ==> /lib64 |
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# |
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# Do not look into /lib64 even if present, if the cpu |
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# doesn't fit. |
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# TODO: Determine the prefixes (i386, x86_64, ...) for |
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# other cpus. The path after the generic one is utterly |
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# specific to intel right now. Ok, on Ubuntu, possibly |
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# other Debian systems we may apparently be able to query |
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# the necessary CPU code. If we can't we simply use the |
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# hardwired fallback. |
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|
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switch -exact -- $tcl_platform(wordSize) { |
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4 { |
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lappend bases /lib |
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if {[catch { |
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exec dpkg-architecture -qDEB_HOST_MULTIARCH |
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} res]} { |
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lappend bases /lib/i386-linux-gnu |
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} else { |
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# dpkg-arch returns the full tripled, not just cpu. |
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lappend bases /lib/$res |
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} |
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} |
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8 { |
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lappend bases /lib64 |
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if {[catch { |
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exec dpkg-architecture -qDEB_HOST_MULTIARCH |
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} res]} { |
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lappend bases /lib/x86_64-linux-gnu |
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} else { |
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# dpkg-arch returns the full tripled, not just cpu. |
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lappend bases /lib/$res |
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} |
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} |
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default { |
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return -code error "Bad wordSize $tcl_platform(wordSize), expected 4 or 8" |
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} |
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} |
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foreach base $bases { |
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if {[LibcVersion $base -> v]} break |
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} |
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append plat -$v |
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return "${plat}-${cpu}" |
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} |
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} |
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return $id |
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} |
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proc ::platform::LibcVersion {base _->_ vv} { |
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upvar 1 $vv v |
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set libclist [lsort [glob -nocomplain -directory $base libc*]] |
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if {![llength $libclist]} { return 0 } |
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set libc [lindex $libclist 0] |
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# Try executing the library first. This should suceed |
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# for a glibc library, and return the version |
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# information. |
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if {![catch { |
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set vdata [lindex [split [exec $libc] \n] 0] |
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}]} { |
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regexp {version ([0-9]+(\.[0-9]+)*)} $vdata -> v |
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foreach {major minor} [split $v .] break |
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set v glibc${major}.${minor} |
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return 1 |
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} else { |
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# We had trouble executing the library. We are now |
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# inspecting its name to determine the version |
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# number. This code by Larry McVoy. |
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if {[regexp -- {libc-([0-9]+)\.([0-9]+)} $libc -> major minor]} { |
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set v glibc${major}.${minor} |
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return 1 |
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} |
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} |
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return 0 |
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} |
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# -- platform::patterns |
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# |
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# Given an exact platform identifier, i.e. _not_ the generic |
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# identifier it assembles a list of exact platform identifier |
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# describing platform which should be compatible with the |
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# input. |
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# |
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# I.e. packages for all platforms in the result list should be |
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# loadable on the specified platform. |
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|
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# << Should we add the generic identifier to the list as well ? In |
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# general it is not compatible I believe. So better not. In many |
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# cases the exact identifier is identical to the generic one |
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# anyway. |
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# >> |
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|
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proc ::platform::patterns {id} { |
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set res [list $id] |
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if {$id eq "tcl"} {return $res} |
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switch -glob -- $id { |
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solaris*-* { |
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if {[regexp {solaris([^-]*)-(.*)} $id -> v cpu]} { |
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if {$v eq ""} {return $id} |
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foreach {major minor} [split $v .] break |
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incr minor -1 |
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for {set j $minor} {$j >= 6} {incr j -1} { |
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lappend res solaris${major}.${j}-${cpu} |
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} |
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} |
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} |
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linux*-* { |
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if {[regexp {linux-glibc([^-]*)-(.*)} $id -> v cpu]} { |
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foreach {major minor} [split $v .] break |
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incr minor -1 |
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for {set j $minor} {$j >= 0} {incr j -1} { |
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lappend res linux-glibc${major}.${j}-${cpu} |
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} |
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} |
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} |
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macosx-powerpc { |
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lappend res macosx-universal |
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} |
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macosx-x86_64 { |
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lappend res macosx-i386-x86_64 |
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} |
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macosx-ix86 { |
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lappend res macosx-universal macosx-i386-x86_64 |
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} |
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macosx*-* { |
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# 10.5+,11.0+ |
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if {[regexp {macosx([^-]*)-(.*)} $id -> v cpu]} { |
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switch -exact -- $cpu { |
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ix86 { |
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lappend alt i386-x86_64 |
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lappend alt universal |
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} |
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x86_64 { |
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if {[lindex [split $::tcl_platform(osVersion) .] 0] < 19} { |
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set alt i386-x86_64 |
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} else { |
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set alt {} |
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} |
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} |
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arm { |
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lappend alt x86_64 |
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} |
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default { set alt {} } |
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} |
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if {$v ne ""} { |
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foreach {major minor} [split $v .] break |
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|
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set res {} |
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if {$major eq 13} { |
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# Add 13.0 to 13.minor to patterns. |
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for {set j $minor} {$j >= 0} {incr j -1} { |
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lappend res macosx${major}.${j}-${cpu} |
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foreach a $alt { |
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lappend res macosx${major}.${j}-$a |
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} |
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} |
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set major 12 |
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set minor 5 |
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} |
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if {$major eq 12} { |
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# Add 12.0 to 12.minor to patterns. |
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for {set j $minor} {$j >= 0} {incr j -1} { |
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lappend res macosx${major}.${j}-${cpu} |
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foreach a $alt { |
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lappend res macosx${major}.${j}-$a |
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} |
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} |
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set major 11 |
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set minor 5 |
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} |
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if {$major eq 11} { |
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# Add 11.0 to 11.minor to patterns. |
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for {set j $minor} {$j >= 0} {incr j -1} { |
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lappend res macosx${major}.${j}-${cpu} |
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foreach a $alt { |
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lappend res macosx${major}.${j}-$a |
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} |
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} |
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set major 10 |
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set minor 15 |
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} |
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# Add 10.5 to 10.minor to patterns. |
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for {set j $minor} {$j >= 5} {incr j -1} { |
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if {$cpu ne "arm"} { |
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lappend res macosx${major}.${j}-${cpu} |
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} |
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foreach a $alt { |
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lappend res macosx${major}.${j}-$a |
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} |
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} |
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|
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# Add unversioned patterns for 10.3/10.4 builds. |
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lappend res macosx-${cpu} |
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foreach a $alt { |
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lappend res macosx-$a |
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} |
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} else { |
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# No version, just do unversioned patterns. |
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foreach a $alt { |
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lappend res macosx-$a |
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} |
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} |
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} else { |
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# no v, no cpu ... nothing |
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} |
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} |
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} |
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lappend res tcl ; # Pure tcl packages are always compatible. |
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return $res |
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} |
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|
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|
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# ### ### ### ######### ######### ######### |
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## Ready |
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|
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package provide platform 1.0.19 |
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|
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# ### ### ### ######### ######### ######### |
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## Demo application |
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|
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if {[info exists argv0] && ($argv0 eq [info script])} { |
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puts ==================================== |
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parray tcl_platform |
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puts ==================================== |
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puts Generic\ identification:\ [::platform::generic] |
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puts Exact\ identification:\ \ \ [::platform::identify] |
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puts ==================================== |
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puts Search\ patterns: |
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puts *\ [join [::platform::patterns [::platform::identify]] \n*\ ] |
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puts ==================================== |
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exit 0 |
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} |
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Reference in new issue