You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
234 lines
6.6 KiB
Tcl
234 lines
6.6 KiB
Tcl
15 years ago
|
# ldAout.tcl --
|
||
|
|
#
|
||
|
|
# This "tclldAout" procedure in this script acts as a replacement
|
||
|
|
# for the "ld" command when linking an object file that will be
|
||
|
|
# loaded dynamically into Tcl or Tk using pseudo-static linking.
|
||
|
|
#
|
||
|
|
# Parameters:
|
||
|
|
# The arguments to the script are the command line options for
|
||
|
|
# an "ld" command.
|
||
|
|
#
|
||
|
|
# Results:
|
||
|
|
# The "ld" command is parsed, and the "-o" option determines the
|
||
|
|
# module name. ".a" and ".o" options are accumulated.
|
||
|
|
# The input archives and object files are examined with the "nm"
|
||
|
|
# command to determine whether the modules initialization
|
||
|
|
# entry and safe initialization entry are present. A trivial
|
||
|
|
# C function that locates the entries is composed, compiled, and
|
||
|
|
# its .o file placed before all others in the command; then
|
||
|
|
# "ld" is executed to bind the objects together.
|
||
|
|
#
|
||
|
|
# RCS: @(#) $Id: ldAout.tcl,v 1.5 2001/09/28 01:21:53 dgp Exp $
|
||
|
|
#
|
||
|
|
# Copyright (c) 1995, by General Electric Company. All rights reserved.
|
||
|
|
#
|
||
|
|
# See the file "license.terms" for information on usage and redistribution
|
||
|
|
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
||
|
|
#
|
||
|
|
# This work was supported in part by the ARPA Manufacturing Automation
|
||
|
|
# and Design Engineering (MADE) Initiative through ARPA contract
|
||
|
|
# F33615-94-C-4400.
|
||
|
|
|
||
|
|
proc tclLdAout {{cc {}} {shlib_suffix {}} {shlib_cflags none}} {
|
||
|
|
global env
|
||
|
|
global argv
|
||
|
|
|
||
|
|
if {[string equal $cc ""]} {
|
||
|
|
set cc $env(CC)
|
||
|
|
}
|
||
|
|
|
||
|
|
# if only two parameters are supplied there is assumed that the
|
||
|
|
# only shlib_suffix is missing. This parameter is anyway available
|
||
|
|
# as "info sharedlibextension" too, so there is no need to transfer
|
||
|
|
# 3 parameters to the function tclLdAout. For compatibility, this
|
||
|
|
# function now accepts both 2 and 3 parameters.
|
||
|
|
|
||
|
|
if {[string equal $shlib_suffix ""]} {
|
||
|
|
set shlib_cflags $env(SHLIB_CFLAGS)
|
||
|
|
} elseif {[string equal $shlib_cflags "none"]} {
|
||
|
|
set shlib_cflags $shlib_suffix
|
||
|
|
}
|
||
|
|
|
||
|
|
# seenDotO is nonzero if a .o or .a file has been seen
|
||
|
|
set seenDotO 0
|
||
|
|
|
||
|
|
# minusO is nonzero if the last command line argument was "-o".
|
||
|
|
set minusO 0
|
||
|
|
|
||
|
|
# head has command line arguments up to but not including the first
|
||
|
|
# .o or .a file. tail has the rest of the arguments.
|
||
|
|
set head {}
|
||
|
|
set tail {}
|
||
|
|
|
||
|
|
# nmCommand is the "nm" command that lists global symbols from the
|
||
|
|
# object files.
|
||
|
|
set nmCommand {|nm -g}
|
||
|
|
|
||
|
|
# entryProtos is the table of _Init and _SafeInit prototypes found in the
|
||
|
|
# module.
|
||
|
|
set entryProtos {}
|
||
|
|
|
||
|
|
# entryPoints is the table of _Init and _SafeInit entries found in the
|
||
|
|
# module.
|
||
|
|
set entryPoints {}
|
||
|
|
|
||
|
|
# libraries is the list of -L and -l flags to the linker.
|
||
|
|
set libraries {}
|
||
|
|
set libdirs {}
|
||
|
|
|
||
|
|
# Process command line arguments
|
||
|
|
foreach a $argv {
|
||
|
|
if {!$minusO && [regexp {\.[ao]$} $a]} {
|
||
|
|
set seenDotO 1
|
||
|
|
lappend nmCommand $a
|
||
|
|
}
|
||
|
|
if {$minusO} {
|
||
|
|
set outputFile $a
|
||
|
|
set minusO 0
|
||
|
|
} elseif {![string compare $a -o]} {
|
||
|
|
set minusO 1
|
||
|
|
}
|
||
|
|
if {[regexp {^-[lL]} $a]} {
|
||
|
|
lappend libraries $a
|
||
|
|
if {[regexp {^-L} $a]} {
|
||
|
|
lappend libdirs [string range $a 2 end]
|
||
|
|
}
|
||
|
|
} elseif {$seenDotO} {
|
||
|
|
lappend tail $a
|
||
|
|
} else {
|
||
|
|
lappend head $a
|
||
|
|
}
|
||
|
|
}
|
||
|
|
lappend libdirs /lib /usr/lib
|
||
|
|
|
||
|
|
# MIPS -- If there are corresponding G0 libraries, replace the
|
||
|
|
# ordinary ones with the G0 ones.
|
||
|
|
|
||
|
|
set libs {}
|
||
|
|
foreach lib $libraries {
|
||
|
|
if {[regexp {^-l} $lib]} {
|
||
|
|
set lname [string range $lib 2 end]
|
||
|
|
foreach dir $libdirs {
|
||
|
|
if {[file exists [file join $dir lib${lname}_G0.a]]} {
|
||
|
|
set lname ${lname}_G0
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
lappend libs -l$lname
|
||
|
|
} else {
|
||
|
|
lappend libs $lib
|
||
|
|
}
|
||
|
|
}
|
||
|
|
set libraries $libs
|
||
|
|
|
||
|
|
# Extract the module name from the "-o" option
|
||
|
|
|
||
|
|
if {![info exists outputFile]} {
|
||
|
|
error "-o option must be supplied to link a Tcl load module"
|
||
|
|
}
|
||
|
|
set m [file tail $outputFile]
|
||
|
|
if {[regexp {\.a$} $outputFile]} {
|
||
|
|
set shlib_suffix .a
|
||
|
|
} else {
|
||
|
|
set shlib_suffix ""
|
||
|
|
}
|
||
|
|
if {[regexp {\..*$} $outputFile match]} {
|
||
|
|
set l [expr {[string length $m] - [string length $match]}]
|
||
|
|
} else {
|
||
|
|
error "Output file does not appear to have a suffix"
|
||
|
|
}
|
||
|
|
set modName [string tolower $m 0 [expr {$l-1}]]
|
||
|
|
if {[regexp {^lib} $modName]} {
|
||
|
|
set modName [string range $modName 3 end]
|
||
|
|
}
|
||
|
|
if {[regexp {[0-9\.]*(_g0)?$} $modName match]} {
|
||
|
|
set modName [string range $modName 0 [expr {[string length $modName]-[string length $match]-1}]]
|
||
|
|
}
|
||
|
|
set modName [string totitle $modName]
|
||
|
|
|
||
|
|
# Catalog initialization entry points found in the module
|
||
|
|
|
||
|
|
set f [open $nmCommand r]
|
||
|
|
while {[gets $f l] >= 0} {
|
||
|
|
if {[regexp {T[ ]*_?([A-Z][a-z0-9_]*_(Safe)?Init(__FP10Tcl_Interp)?)$} $l trash symbol]} {
|
||
|
|
if {![regexp {_?([A-Z][a-z0-9_]*_(Safe)?Init)} $symbol trash s]} {
|
||
|
|
set s $symbol
|
||
|
|
}
|
||
|
|
append entryProtos {extern int } $symbol { (); } \n
|
||
|
|
append entryPoints { } \{ { "} $s {", } $symbol { } \} , \n
|
||
|
|
}
|
||
|
|
}
|
||
|
|
close $f
|
||
|
|
|
||
|
|
if {[string equal $entryPoints ""]} {
|
||
|
|
error "No entry point found in objects"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Compose a C function that resolves the initialization entry points and
|
||
|
|
# embeds the required libraries in the object code.
|
||
|
|
|
||
|
|
set C {#include <string.h>}
|
||
|
|
append C \n
|
||
|
|
append C {char TclLoadLibraries_} $modName { [] =} \n
|
||
|
|
append C { "@LIBS: } $libraries {";} \n
|
||
|
|
append C $entryProtos
|
||
|
|
append C {static struct } \{ \n
|
||
|
|
append C { char * name;} \n
|
||
|
|
append C { int (*value)();} \n
|
||
|
|
append C \} {dictionary [] = } \{ \n
|
||
|
|
append C $entryPoints
|
||
|
|
append C { 0, 0 } \n \} \; \n
|
||
|
|
append C {typedef struct Tcl_Interp Tcl_Interp;} \n
|
||
|
|
append C {typedef int Tcl_PackageInitProc (Tcl_Interp *);} \n
|
||
|
|
append C {Tcl_PackageInitProc *} \n
|
||
|
|
append C TclLoadDictionary_ $modName { (symbol)} \n
|
||
|
|
append C { CONST char * symbol;} \n
|
||
|
|
append C {
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
for (i = 0; dictionary [i] . name != 0; ++i) {
|
||
|
|
if (!strcmp (symbol, dictionary [i] . name)) {
|
||
|
|
return dictionary [i].value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
append C \n
|
||
|
|
|
||
|
|
|
||
|
|
# Write the C module and compile it
|
||
|
|
|
||
|
|
set cFile tcl$modName.c
|
||
|
|
set f [open $cFile w]
|
||
|
|
puts -nonewline $f $C
|
||
|
|
close $f
|
||
|
|
set ccCommand "$cc -c $shlib_cflags $cFile"
|
||
|
|
puts stderr $ccCommand
|
||
|
|
eval exec $ccCommand
|
||
|
|
|
||
|
|
# Now compose and execute the ld command that packages the module
|
||
|
|
|
||
|
|
if {[string equal $shlib_suffix ".a"]} {
|
||
|
|
set ldCommand "ar cr $outputFile"
|
||
|
|
regsub { -o} $tail {} tail
|
||
|
|
} else {
|
||
|
|
set ldCommand ld
|
||
|
|
foreach item $head {
|
||
|
|
lappend ldCommand $item
|
||
|
|
}
|
||
|
|
}
|
||
|
|
lappend ldCommand tcl$modName.o
|
||
|
|
foreach item $tail {
|
||
|
|
lappend ldCommand $item
|
||
|
|
}
|
||
|
|
puts stderr $ldCommand
|
||
|
|
eval exec $ldCommand
|
||
|
|
if {[string equal $shlib_suffix ".a"]} {
|
||
|
|
exec ranlib $outputFile
|
||
|
|
}
|
||
|
|
|
||
|
|
# Clean up working files
|
||
|
|
exec /bin/rm $cFile [file rootname $cFile].o
|
||
|
|
}
|