1 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation
3 proc load_gcc_lib { filename } {
5 load_file $srcdir/../../gcc/testsuite/lib/$filename
9 load_gcc_lib target-libpath.exp
11 # GCJ_UNDER_TEST is the compiler under test.
15 if ![info exists tmpdir] {
19 # This is like `prune_warnings', but it also prunes away a warning
20 # from the bytecode front end that we don't care about.
21 proc libjava_prune_warnings {text} {
22 set text [prune_warnings $text]
23 set tlist [split $text \n]
24 set len [llength $tlist]
25 for {set i [expr {$len - 1}]} {$i >= 2} {incr i -1} {
26 if {[string match "*unreachable bytecode*" [lindex $tlist $i]]} {
27 # Delete this line, all other unreachable warnings and the previous
28 # two lines containing the method and class.
30 while {[string match "*unreachable bytecode*" [lindex $tlist $j]]} {
34 set tlist [lreplace $tlist $j $i]
38 return [join $tlist \n]
41 # This is like `target_compile' but it does some surgery to work
42 # around stupid DejaGNU bugs. In particular DejaGNU has very poor
43 # quoting, so for instance a `$' will be re-evaluated at spawn time.
45 proc libjava_tcompile {source destfile type options} {
46 # This strange-looking expression really does quote the `$'.
47 regsub -all -- {\$} $source {\$} source
48 regsub -all -- {\$} $destfile {\$} destfile
49 return [target_compile $source $destfile $type $options]
52 # Read an `xfail' file if it exists. Returns a list of xfail tokens.
53 proc libjava_read_xfail {file} {
54 if {! [file exists $file]} {
58 set tokens [string trim [read $fd]]
63 # Find a particular executable. FIXME: this relies on DejaGnu
64 # internals. These should probably be exposed in a better way.
65 proc libjava_find_program {prog} {
68 set file [lookfor_file $tool_root_dir $prog]
70 set file [lookfor_file $tool_root_dir gcc/$prog];
80 return [libjava_find_program jv-scan]
85 return [libjava_find_program gcjh]
89 global SUN_JAVAC GCJ_UNDER_TEST env libgcj_jar
90 # If JDK doesn't run on your platform but some other
91 # JDK-compatible javac does, you may set SUN_JAVAC to point to it.
92 # One of the most important properties of a SUN_JAVAC is that it
93 # must create class-files even for classes that have not been
94 # specified in the command line, but that were needed to compile
95 # those that have. For example, Pizza won't do it, but you can
96 # use `kaffe sun.tools.javac.Main', if you have Sun's classes.zip
97 # in the kaffe's default search path.
98 if {![info exists SUN_JAVAC]} {
99 if {[info exists env(SUN_JAVAC)]} {
100 set SUN_JAVAC $env(SUN_JAVAC)
102 set SUN_JAVAC "$GCJ_UNDER_TEST -C -I$libgcj_jar"
108 proc bytecompile_file { file objdir {classpath {}} } {
110 set dirname [file dirname $file]
112 set javac [find_javac]
113 if {$classpath != ""} then {
114 set env(CLASSPATH) $classpath
118 send_log "byte compile: $javac -g [list $file] -d $objdir 2>@ stdout\n"
120 set q [eval exec "$javac -g [list $file] -d $objdir 2>@ stdout"]
122 send_log "couldn't compile $file: $msg\n"
131 set libjava_initialized 0
134 # Build the status wrapper library as needed.
136 proc libjava_init { args } {
138 global wrap_compile_flags;
139 global libjava_initialized libjava_uses_threads
140 global GCJ_UNDER_TEST
141 global TOOL_EXECUTABLE
143 global env libgcj_jar
145 global libjava_libgcc_s_path
146 global target_triplet
148 # We set LC_ALL and LANG to C so that we get the same error messages as expected.
152 if { $libjava_initialized == 1 } { return; }
154 if ![info exists GCJ_UNDER_TEST] {
155 if [info exists TOOL_EXECUTABLE] {
156 set GCJ_UNDER_TEST $TOOL_EXECUTABLE;
158 if [info exists env(GCJ)] {
159 set GCJ_UNDER_TEST $env(GCJ)
161 set GCJ_UNDER_TEST "[find_gcj]"
166 # Find the libgcj jar file.
167 set libgcj_jar [glob $objdir/../libgcj-*.jar]
168 verbose "jar file is $libgcj_jar"
170 # FIXME: This finds libgcj.spec for the default multilib.
171 # If thread models differ between multilibs, this has to be moved
172 # to libjava_arguments
173 set specdir [libjava_find_spec]
175 # The -B is so we find libgcj.spec.
176 set text [eval exec "$GCJ_UNDER_TEST -B$specdir -v 2>@ stdout"]
177 regexp -- "Thread model: (\[^\n\]+)\n" $text ignore model
178 set libjava_uses_threads [expr {! ($model == "no"
180 || $model == "single")}]
182 # Always set encoding used by gcj.
183 append GCJ_UNDER_TEST " --encoding=UTF-8"
186 set wrap_compile_flags "";
187 if [target_info exists needs_status_wrapper] {
188 set result [build_wrapper "testglue.o"];
189 if { $result != "" } {
190 set wrapper_file [lindex $result 0];
191 set wrap_compile_flags [lindex $result 1];
193 warning "Status wrapper failed to build."
197 # Finally, add the gcc build directory so that we can find the
198 # shared libgcc. This, like much of dejagnu, is hideous.
199 set libjava_libgcc_s_path {}
201 if { [string match "powerpc-*-darwin*" $target_triplet] } {
202 set so_extension "dylib"
204 set so_extension "so"
206 set gccdir [lookfor_file $tool_root_dir gcc/libgcc_s.${so_extension}]
208 set gccdir [file dirname $gccdir]
209 lappend libjava_libgcc_s_path $gccdir
210 verbose "libjava_libgcc_s_path = $libjava_libgcc_s_path"
211 set compiler ${gccdir}/xgcc
212 if { [is_remote host] == 0 && [which $compiler] != 0 } {
213 foreach i "[exec $compiler --print-multi-lib]" {
215 regexp -- "\[a-z0-9=/\.-\]*;" $i mldir
216 set mldir [string trimright $mldir "\;@"]
217 if { "$mldir" == "." } {
220 if { [llength [glob -nocomplain ${gccdir}/${mldir}/libgcc_s*.${so_extension}.*]] >= 1 } {
221 lappend libjava_libgcc_s_path "${gccdir}/${mldir}"
227 set libjava_initialized 1
230 # Find a library. We know where libtool puts the actual libraries,
231 # and we look there. The implementation is fairly hacky. We can't
232 # compile with -nodefaultlibs, because that will also eliminate the
233 # system libraries we need. In order to have gcj still work, it must
234 # find the appropriate libraries so we must add -L options for their
235 # paths. However we can't simply use those libraries; we still need
236 # libtool for linking.
237 # Don't return the the lib${name}.la files here, since this causes the
238 # libraries to be linked twice: once as lib${name}.so/dylib and another time
239 # via gcj's implicit -l${name}. This is both unnecessary and causes the
240 # Solaris ld to warn: attempted multiple inclusion of file. This warning
241 # is not ignored by the dejagnu framework and cannot be disabled.
242 proc libjava_find_lib {dir name} {
244 set gp [get_multilibs]
245 foreach extension {so dll a} {
246 foreach sub {.libs _libs} {
248 if {[file exists $gp/$dir/$sub/lib${name}.${extension}]} then {
249 # Just return the `-L' option. The library itself
250 # will be picked up via the spec file.
251 return "-L$gp/$dir/$sub"
254 # Just return the `-L' option. The library itself will be
255 # picked up via the spec file.
257 $base_dir/../../$dir/$sub/lib${name}.${extension} \
258 "-L$base_dir/../../$dir/$sub" \
268 # Find libgcj.spec. We need to use the file corresponding to the multilib
269 # under test since they might differ. Append a trailing slash since this
271 proc libjava_find_spec {} {
276 # Find `gij'. Return empty string if not found.
277 proc libjava_find_gij {} {
278 global base_dir objdir
280 set gijdir [lookfor_file [get_multilibs] libjava];
281 if {! [file exists $gijdir/gij]} {
287 # Remove a bunch of files.
288 proc gcj_cleanup {args} {
290 if {[string match *.o $file]} {
291 verbose "removing [file rootname $file].lo"
292 file delete -force [file rootname $file].lo
294 file delete -force -- $file
295 verbose "removing $file"
297 # It is simplest to do this instead of trying to figure out what
298 # bits in .libs ought to be removed.
299 catch {system "rm -rf .libs"}
302 # Compute arguments needed for compiler. MODE is a libtool mode:
303 # either compile or link.
304 proc libjava_arguments {{mode compile}} {
307 global srcdir subdir objdir
309 global GCJ_UNDER_TEST
315 global libjava_libgcc_s_path
316 global libjava_ld_library_path
317 global ld_library_path
318 global target_triplet
320 if [info exists LIBJAVA] {
321 set libjava $LIBJAVA;
323 set libjava [libjava_find_lib libjava gcj]
326 verbose "using LIBJAVA = $libjava" 2
329 # Basically we want to build up a colon separated path list from
330 # the value of $libjava.
333 foreach dir [list $libjava] {
334 foreach item [split $dir " "] {
335 switch -glob -- $item {
337 lappend lpath [string range $item 2 end]
343 set lpath [concat $lpath $libjava_libgcc_s_path]
344 verbose "lpath = $lpath ; libgcc_s_path = $libjava_libgcc_s_path"
345 set ld_library_path [join $lpath :]
346 set libjava_ld_library_path "$ld_library_path"
348 # That's enough to make things work for the normal case.
349 # If we wanted to handle an arbitrary value of libjava,
350 # then we'd have to do a lot more work.
352 set_ld_library_path_env_vars
353 if [info exists env(LD_LIBRARY_PATH)] {
354 verbose "LD_LIBRARY_PATH = $env(LD_LIBRARY_PATH)"
357 # Determine CLASSPATH separator
358 if { [string match "i?86-pc-mingw32*" $target_triplet] } {
364 # Set the CLASSPATH environment variable
367 [join [list . $srcdir/$subdir $objdir $libgcj_jar] $sep]
368 verbose "CLASSPATH is $env(CLASSPATH)"
370 if {$mode == "link"} {
371 global wrapper_file wrap_compile_flags
372 lappend args "additional_flags=$wrap_compile_flags"
373 lappend args "libs=$wrapper_file"
374 lappend args "libs=$libjava"
378 if { [target_info needs_status_wrapper]!="" && [info exists gluefile] } {
379 lappend args "libs=${gluefile}"
380 lappend args "ldflags=$wrap_flags"
383 if [info exists TOOL_OPTIONS] {
384 lappend args "additional_flags=$TOOL_OPTIONS"
387 # Determine libgcj.spec corresponding to multilib under test.
388 set specdir [libjava_find_spec]
390 # Search for libtool. We need it to link.
392 set d [absolute $objdir]
393 foreach x {. .. ../.. ../../..} {
394 if {[file exists $d/$x/libtool]} then {
395 # We have to run silently to avoid DejaGNU lossage.
397 "compiler=$d/$x/libtool --silent --tag=GCJ --mode=$mode $GCJ_UNDER_TEST -B$specdir"
402 if {! $found_compiler} {
403 # Append -B$specdir so that we find libgcj.spec before it
405 lappend args "compiler=$GCJ_UNDER_TEST -B$specdir"
408 # Avoid libtool wrapper scripts when possible.
409 # but not if libtool warnings results in FAILs
410 if {$mode == "link"} {
411 if {! [istarget "*-*-cygwin*"] && ! [istarget "*-*-mingw*"] } {
412 lappend args "additional_flags=-no-install"
414 if { [istarget "*-*-darwin*"] } {
415 lappend args "additional_flags=-bind_at_load"
416 lappend args "additional_flags=-multiply_defined suppress"
423 # Link a bunch of objects into a program. MAIN is the name of the
424 # class holding `main'. Return 0 on failure.
425 proc gcj_link {program main files {options {}}} {
426 set arguments [libjava_arguments link]
427 if {[llength $options]} {
428 eval lappend arguments $options
430 lappend arguments "additional_flags=--main=$main"
431 set x [libjava_prune_warnings \
432 [libjava_tcompile $files $program executable $arguments]]
434 verbose "link failure: $x" 2
435 fail "linking $program"
437 fail "running $program"
441 pass "linking $program"
445 # Invoke the program and see what happens. Return 0 on failure.
446 proc gcj_invoke {program expectFile ld_library_additions} {
448 global libjava_ld_library_path
449 global ld_library_path
451 set ld_library_path "$libjava_ld_library_path"
452 if {[llength $ld_library_additions] > 0} {
453 append ld_library_path :[join $ld_library_additions :]
456 set_ld_library_path_env_vars
457 if [info exists env(LD_LIBRARY_PATH)] {
458 verbose "LD_LIBRARY_PATH=$env(LD_LIBRARY_PATH)"
461 set result [libjava_load ./$program]
462 set status [lindex $result 0]
463 set output [lindex $result 1]
466 restore_ld_library_path_env_vars
468 if {$status != "pass"} {
469 verbose "got $output"
471 untested "$program output"
475 set id [open $expectFile r]
476 set expected [read $id]
479 if {! [string compare $output $expected]} {
480 pass "$program output"
483 fail "$program output"
488 # Invoke a program and check its output. EXECUTABLE is the program;
489 # ARGS are the arguments to the program. Returns 1 if tests passed
490 # (or things were left untested), 0 otherwise.
491 proc libjava_invoke {errname testName optName executable inpfile resultfile
492 ld_library_additions args} {
494 global libjava_ld_library_path
495 global ld_library_path
497 set ld_library_path "$libjava_ld_library_path"
498 if {[llength $ld_library_additions] > 0} {
499 append ld_library_path :[join $ld_library_additions :]
502 set_ld_library_path_env_vars
503 if [info exists env(LD_LIBRARY_PATH)] {
504 verbose "LD_LIBRARY_PATH=$env(LD_LIBRARY_PATH)"
509 if {[info exists opts(no-exec)]} {
510 if {[info exists opts(need-threads)]} {
511 # This means we wanted to try to run it but we couldn't
512 # because threads aren't supported. So we have to
513 # generate an `untested'.
514 untested "$errname execution - $testName"
515 untested "$errname output - $testName"
520 set result [libjava_load $executable $args "$inpfile"]
521 set status [lindex $result 0]
522 set output [lindex $result 1]
524 # Restore LD_LIBRARY_PATH setting.
525 restore_ld_library_path_env_vars
527 if {[info exists opts(xfail-exec)]} then {
530 $status "$errname execution - $testName"
531 if { $status != "pass" } {
532 untested "$errname output - $testName"
536 verbose "resultfile is $resultfile"
537 set id [open $resultfile r]
539 append expected [read $id]
540 regsub -all "\r" "$output" "" output
541 regsub "\n*$" $expected "" expected
542 regsub "\n*$" $output "" output
543 regsub "^\n*" $expected "" expected
544 regsub "^\n*" $output "" output
545 regsub -all "\[ \t\]\[ \t\]*" $expected " " expected
546 regsub -all "\[ \t\]*\n\n*" $expected "\n" expected
547 regsub -all "\[ \t\]\[ \t\]*" $output " " output
548 regsub -all "\[ \t\]*\n\n*" $output "\n" output
549 verbose "expected is $expected"
550 verbose "actual is $output"
552 if {[info exists opts(regexp_match)]} {
553 if [regexp $expected $output] {
557 if { $expected == $output } {
561 if {[info exists opts(xfail-output)]} {
564 if { $passed == 1 } {
565 pass "$errname output - $testName"
567 fail "$errname output - $testName"
575 # Run the test specified by srcfile and resultfile. compile_args and
576 # exec_args are options telling this proc how to work.
578 proc test_libjava_from_source { options srcfile compile_args inpfile resultfile exec_args } {
580 global srcdir subdir objdir
582 global GCJ_UNDER_TEST
586 # Make opts into an array.
589 foreach item $exec_args {
593 # If we need threads and we don't have them then set the `no-exec'
594 # flag. This is case is also handled specially later.
595 if {[info exists opts(need-threads)]} {
596 global libjava_uses_threads
597 if {! $libjava_uses_threads} {
602 set errname [file rootname [file tail $srcfile]]
603 if {! [runtest_file_p $runtests $errname]} {
607 if {[info exists opts(no-link)]} {
612 set args [libjava_arguments $mode]
613 if {! [info exists opts(no-link)]} {
614 # Add the --main flag
615 lappend args "additional_flags=--main=[file rootname [file tail $srcfile]]"
616 if { $compile_args != "" } {
617 lappend args "additional_flags=$compile_args"
621 regsub "^.*/(\[^/.\]+)\[.\]\[^/]*$" "$srcfile" "\\1" out
622 set executable "${objdir}/$out"
623 if {[info exists opts(no-link)]} {
624 append executable ".o"
627 # DOS/win32 targets default to .exe if no suffix is given
628 # We then try to delete a file that doesn't exist. It is
629 # simpler to add the suffix everywhere.
630 append executable ".exe"
631 set target executable
633 if { $compile_args != "" } {
634 set errname "$errname $compile_args"
637 set removeList [list $executable]
639 set x [libjava_prune_warnings \
640 [libjava_tcompile $srcfile "$executable" $target $args]]
641 if {[info exists opts(xfail-gcj)]} {
645 verbose "target_compile failed: $x" 2
647 if {[info exists opts(shouldfail)]} {
648 pass "$errname compilation from source"
649 eval gcj_cleanup $removeList
653 fail "$errname compilation from source"
654 if {[info exists opts(xfail-gcj)]
655 || ! [info exists opts(no-exec)]
656 || [info exists opts(need-threads)]} {
657 untested "$errname execution from source compiled test"
658 untested "$errname output from source compiled test"
662 if {[info exists opts(shouldfail)]} {
663 fail "$errname compilation from source"
666 pass "$errname compilation from source"
668 # Set up the options the way they are expected by libjava_invoke.
669 if {[info exists opts(xfail-source-output)]} {
670 set opts(xfail-output) x
672 if {[libjava_invoke $errname "source compiled test" opts $executable \
673 $inpfile $resultfile ""]} {
674 # Everything ok, so clean up.
675 eval gcj_cleanup $removeList
680 # Run the test specified by srcfile and resultfile. compile_args and
681 # exec_args are options telling this proc how to work.
683 proc test_libjava_from_javac { options srcfile compile_args inpfile resultfile exec_args } {
685 global srcdir subdir objdir
687 global GCJ_UNDER_TEST
692 # Make opts into an array.
695 foreach item $exec_args {
699 # If we need threads and we don't have them then set the `no-exec'
700 # flag. This is case is also handled specially later.
701 if {[info exists opts(need-threads)]} {
702 global libjava_uses_threads
703 if {! $libjava_uses_threads} {
707 set errname [file rootname [file tail $srcfile]]
708 if {! [runtest_file_p $runtests $errname]} {
712 # bytecompile files with Sun's compiler for now.
713 set bc_ok [bytecompile_file $srcfile $objdir]
715 set javac [find_javac]
716 # This is an ugly heuristic but it will have to do.
717 if {[string match *gcj* $javac]} {
722 if {[info exists opts(xfail-$tag)]} {
726 if {[info exists opts(shouldfail)]} {
727 pass "$errname byte compilation"
730 fail "$errname byte compilation"
731 untested "$errname compilation from bytecode"
732 if {! [info exists opts(no-exec)]
733 || [info exists opts(need-threads)]} {
734 untested "$errname execution from bytecode->native test"
735 untested "$errname output from bytecode->native test"
739 if {[info exists opts(shouldfail)]} {
740 fail "$errname byte compilation"
743 pass "$errname byte compilation"
747 # Find name to use for --main, and name of all class files.
748 set jvscan [find_jvscan]
749 verbose "jvscan is $jvscan"
750 set main_name [string trim \
751 [libjava_prune_warnings \
752 [lindex [local_exec "$jvscan --encoding=UTF-8 $srcfile --print-main" "" "" 300] 1]]]
753 verbose "main name is $main_name"
754 set class_out [string trim \
755 [libjava_prune_warnings \
756 [lindex [local_exec "$jvscan --encoding=UTF-8 $srcfile --list-class" "" "" 300] 1]]]
757 verbose "class list is $class_out"
759 if {[string match "*parse error*" $main_name]
760 || [string match "*parse error*" $class_out]} {
761 untested "$errname compilation from bytecode"
762 if {! [info exists opts(no-exec)]
763 || [info exists opts(need-threads)]} {
764 untested "$errname execution from bytecode->native test"
765 untested "$errname output from bytecode->native test"
770 # Turn "a b" into "a.class b.class".
771 # Also, turn "foo.bar" into "foo/bar.class".
773 foreach file [split [string trim $class_out]] {
774 set file [join [split $file .] /]
775 lappend class_files $objdir/$file.class
778 eval lappend removeList $class_files
780 # Usually it is an error for a test program not to have a `main'
781 # method. However, for no-exec tests it is ok. Treat no-link
783 if {[info exists opts(no-link)]} {
788 if {[info exists opts(no-exec)]} {
791 } elseif {$main_name == ""} {
792 perror "No `main' given in program $errname"
796 lappend largs "additional_flags=--main=$main_name"
797 # DOS/win32 targets default to .exe if no suffix is given
798 # We then try to delete a file that doesn't exist. It is
799 # simpler to add the suffix everywhere.
800 set executable "${objdir}/${main_name}.exe"
804 # We purposely ignore errors here; we still want to run the other
806 set gij [libjava_find_gij]
807 # libjava_find_gij will return "" if it couldn't find the
808 # program; in this case we want to skip the test.
809 if {$INTERPRETER == "yes" && $gij != ""} {
810 libjava_invoke $errname "gij test" opts $gij \
811 $inpfile $resultfile "" $main_name
815 set args [libjava_arguments $mode]
816 eval lappend args $largs
818 if { $compile_args != "" } {
819 lappend args "additional_flags=$compile_args"
822 if { $compile_args != "" } {
823 set errname "$errname $compile_args"
826 verbose "compilation command = $args" 2
827 # When compiling and not linking, we have to build each .o
828 # separately. We do this because DejaGNU's target_compile won't
829 # accept an empty "destfile" argument when the mode is "compile".
830 if {$mode == "compile"} {
831 foreach c_file $class_files {
832 set executable [file rootname [file tail $c_file]].o
833 # Don't write files which contain $ chars.
834 regsub -all "\\$" $executable "\^" executable
835 set x [libjava_prune_warnings \
836 [libjava_tcompile '$c_file' "$executable" $type $args]]
837 lappend removeList $executable
843 # This is so evil: we de-listify CLASS_FILES so that we can
844 # turn around and quote the `$' in it for the shell. I really
845 # hate DejaGNU. It is so !@#$!@# unpredictable.
847 foreach stupid $class_files {
848 set hack "$hack $stupid"
850 lappend removeList $executable
851 set x [libjava_prune_warnings \
852 [libjava_tcompile $hack "$executable" $type $args]]
854 if {[info exists opts(xfail-byte)]} {
858 verbose "target_compile failed: $x" 2
859 fail "$errname compilation from bytecode"
860 if {! [info exists opts(no-exec)]
861 || [info exists opts(need-threads)]} {
862 untested "$errname execution from bytecode->native test"
863 untested "$errname output from bytecode->native test"
867 pass "$errname compilation from bytecode"
869 # Set up the options the way they are expected by libjava_invoke.
870 if {[info exists opts(xfail-byte-output)]} {
871 set opts(xfail-output) x
873 if {[libjava_invoke $errname "bytecode->native test" opts $executable \
874 $inpfile $resultfile ""]} {
875 # Everything ok, so clean up.
876 eval gcj_cleanup $removeList
881 # Run the test specified by srcfile and resultfile. compile_args and
882 # exec_args are options telling this proc how to work.
883 # `no-link' don't try to link the program
884 # `no-exec' don't try to run the test
885 # `xfail-gcj' compilation from source will fail
886 # `xfail-javac' compilation with javac will fail
887 # `xfail-gcjC' compilation with gcj -C will fail
888 # `shouldfail' compilation from source is supposed to fail
889 # This is different from xfail, which marks a known
890 # failure that we just haven't fixed.
891 # A compilation marked this way should fail with any
893 # `xfail-byte' compilation from bytecode will fail
894 # `xfail-exec' exec will fail
896 # output will be wrong
897 # `xfail-byte-output'
898 # output will be wrong when compiled from bytecode
899 # `xfail-source-output'
900 # output will be wrong when compiled from source code
902 # test relies on thread support
904 proc test_libjava { options srcfile compile_args inpfile resultfile exec_args } {
905 test_libjava_from_source $options $srcfile $compile_args $inpfile $resultfile $exec_args
906 test_libjava_from_javac $options $srcfile $compile_args $inpfile $resultfile $exec_args
910 # libjava_version -- extract and print the version number of libjavap
912 proc default_libjava_version {} {
915 proc default_libjava_start { } {