X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Ftestsuite%2Flib%2Fld-lib.exp;h=ffdf8051f3191e00433b632810c25f68b3b6494c;hb=bdd65db9b9cd6d5dbdff9b48e97379029f8a3a1a;hp=202037243737a3fb476dc4585b5e8aea050378af;hpb=894891db7f1ff09f021a0d2c8bb471f3a73a776a;p=deliverable%2Fbinutils-gdb.git

diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp
index 2020372437..ffdf8051f3 100644
--- a/ld/testsuite/lib/ld-lib.exp
+++ b/ld/testsuite/lib/ld-lib.exp
@@ -1,7 +1,5 @@
 # Support routines for LD testsuite.
-#   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-#    2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
-#    Free Software Foundation, Inc.
+#   Copyright (C) 1994-2014 Free Software Foundation, Inc.
 #
 # This file is part of the GNU Binutils.
 #
@@ -27,6 +25,36 @@ proc load_common_lib { name } {
 
 load_common_lib binutils-common.exp
 
+# Returns 1 if the gcc for the target is at least version MAJOR.MINOR
+# Returns 0 otherwise.
+#
+proc at_least_gcc_version { major minor } {
+
+    if {![info exists CC]} {
+	set CC [find_gcc]
+    }
+    if { $CC == "" } {
+      return 0
+    }
+    set state [remote_exec host $CC --version]
+    set tmp "[lindex $state 1]\n"
+    # Look for (eg) 4.6.1 in the version output.
+    set ver_re "\[^\\.0-9\]+(\[1-9\]\[0-9\]*)\\.(\[0-9\]+)(?:\\.\[0-9\]+)?"
+    regexp $ver_re $tmp fred maj min
+    verbose "gcc version: $tmp"
+    if { ![info exists maj] || ![info exists min] } then {
+	perror "can't decipher gcc version number, fix the framework!"
+	return 0
+    }
+    verbose "major gcc version is $maj, want at least $major"
+    if { $maj == $major } then {
+	verbose "minor gcc version is $min, want at least $minor"
+	return [expr $min >= $minor]
+    } else {
+	return [expr $maj > $major]
+    }
+}
+
 # Extract and print the version number of ld.
 #
 proc default_ld_version { ld } {
@@ -51,14 +79,33 @@ proc default_ld_version { ld } {
 
 proc run_host_cmd { prog command } {
     global link_output
+    global gcc_B_opt
+    global ld_L_opt
 
     if { ![is_remote host] && [which "$prog"] == 0 } then {
 	perror "$prog does not exist"
 	return 0
     }
 
-    verbose -log "$prog $command"
-    set status [remote_exec host [concat sh -c [list "$prog $command 2>&1"]] "" "/dev/null" "ld.tmp"]
+    # If we are compiling with gcc, we want to add gcc_B_opt and
+    # ld_L_opt to flags.  However, if $prog already has -B options,
+    # which might be the case when running gcc out of a build
+    # directory, we want our -B options to come first.
+    set gccexe $prog
+    set gccparm [string first " " $gccexe]
+    set gccflags ""
+    if { $gccparm > 0 } then {
+	set gccflags [string range $gccexe $gccparm end]
+	set gccexe [string range $gccexe 0 $gccparm]
+	set prog $gccexe
+    }
+    set gccexe [string replace $gccexe 0 [string last "/" $gccexe] ""]
+    if {[string match "*cc*" $gccexe] || [string match "*++*" $gccexe]} then {
+	set gccflags "$gcc_B_opt $gccflags $ld_L_opt"
+    }
+
+    verbose -log "$prog $gccflags $command"
+    set status [remote_exec host [concat sh -c [list "$prog $gccflags $command 2>&1"]] "" "/dev/null" "ld.tmp"]
     remote_upload host "ld.tmp"
     set link_output [file_contents "ld.tmp"]
     regsub "\n$" $link_output "" link_output
@@ -149,14 +196,21 @@ proc big_or_little_endian {} {
 proc default_ld_link { ld target objects } {
     global HOSTING_EMU
     global HOSTING_CRT0
+    global HOSTING_SCRT0
     global HOSTING_LIBS
+    global HOSTING_SLIBS
     global LIBS
     global host_triplet
     global link_output
     global exec_output
 
-    set objs "$HOSTING_CRT0 $objects"
-    set libs "$LIBS $HOSTING_LIBS"
+    if { [ string match "* -pie *" $objects ] } {
+	set objs "$HOSTING_SCRT0 $objects"
+	set libs "$LIBS $HOSTING_SLIBS"
+    } else {
+	set objs "$HOSTING_CRT0 $objects"
+	set libs "$LIBS $HOSTING_LIBS"
+    }
 
     if [is_endian_output_format $objects] then {
 	set flags [big_or_little_endian]
@@ -173,45 +227,22 @@ proc default_ld_link { ld target objects } {
 #
 proc default_ld_simple_link { ld target objects } {
     global host_triplet
-    global gcc_ld_flag
     global exec_output
 
+    set flags ""
     if [is_endian_output_format $objects] then {
 	set flags [big_or_little_endian]
-    } else {
-	set flags ""
-    }
-
-    # If we are compiling with gcc, we want to add gcc_ld_flag to
-    # flags.  Rather than determine this in some complex way, we guess
-    # based on the name of the compiler.
-    set ldexe $ld
-    set ldparm [string first " " $ld]
-    set ldflags ""
-    if { $ldparm > 0 } then {
-	set ldflags [string range $ld $ldparm end]
-	set ldexe [string range $ld 0 $ldparm]
-	set ld $ldexe
-    }
-    set ldexe [string replace $ldexe 0 [string last "/" $ldexe] ""]
-    if {[string match "*gcc*" $ldexe] || [string match "*++*" $ldexe]} then {
-	set ldflags "$gcc_ld_flag $ldflags"
     }
 
     remote_file host delete $target
-
-    set exec_output [run_host_cmd "$ld" "$ldflags $flags -o $target $objects"]
+    set exec_output [run_host_cmd "$ld" "$flags -o $target $objects"]
     set exec_output [prune_warnings $exec_output]
 
     # We don't care if we get a warning about a non-existent start
     # symbol, since the default linker script might use ENTRY.
     regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 
-    if [string match "" $exec_output] then {
-	return 1
-    } else {
-	return 0
-    }
+    return [string match "" $exec_output]
 }
 
 # Compile an object using cc.
@@ -222,7 +253,7 @@ proc default_ld_compile { cc source object } {
     global srcdir
     global subdir
     global host_triplet
-    global gcc_gas_flag
+    global gcc_B_opt
 
     set cc_prog $cc
     if {[llength $cc_prog] > 1} then {
@@ -236,11 +267,12 @@ proc default_ld_compile { cc source object } {
     remote_file build delete "$object"
     remote_file host delete "$object"
 
-    set flags "-I$srcdir/$subdir"
+    set flags "$gcc_B_opt -I$srcdir/$subdir"
 
-    # If we are compiling with gcc, we want to add gcc_gas_flag to
-    # flags.  Rather than determine this in some complex way, we guess
-    # based on the name of the compiler.
+    # If we are compiling with gcc, we want to add gcc_B_opt to flags.
+    # However, if $prog already has -B options, which might be the
+    # case when running gcc out of a build directory, we want our -B
+    # options to come first.
     set ccexe $cc
     set ccparm [string first " " $cc]
     set ccflags ""
@@ -249,24 +281,26 @@ proc default_ld_compile { cc source object } {
 	set ccexe [string range $cc 0 $ccparm]
 	set cc $ccexe
     }
-    set ccexe [string replace $ccexe 0 [string last "/" $ccexe] ""]
-    if {[string match "*gcc*" $ccexe] || [string match "*++*" $ccexe]} then {
-	set flags "$gcc_gas_flag $flags"
-    }
 
+    set ccexe [string replace $ccexe 0 [string last "/" $ccexe] ""]
     if {[string match "*++*" $ccexe]} {
-	set flags "$flags $CXXFLAGS"
+	append flags " $CXXFLAGS"
     } else {
-	set flags "$flags $CFLAGS"
+	append flags " $CFLAGS"
+    }
+
+    if [board_info [target_info name] exists cflags] {
+        append flags " [board_info [target_info name] cflags]"
     }
 
     if [board_info [target_info name] exists multilib_flags] {
 	append flags " [board_info [target_info name] multilib_flags]"
     }
 
-    verbose -log "$cc $flags $ccflags -c $source -o $object"
+    set cmd "$cc $flags $ccflags -c $source -o $object"
+    verbose -log "$cmd"
 
-    set status [remote_exec host [concat sh -c [list "$cc $flags $ccflags -c $source -o $object 2>&1"]] "" "/dev/null" "ld.tmp"]
+    set status [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
     remote_upload host "ld.tmp"
     set exec_output [file_contents "ld.tmp"]
     remote_file build delete "ld.tmp"
@@ -298,10 +332,12 @@ proc default_ld_compile { cc source object } {
 proc default_ld_assemble { as in_flags source object } {
     global ASFLAGS
     global host_triplet
+    global srcdir
+    global subdir
 
     if ![info exists ASFLAGS] { set ASFLAGS "" }
 
-    set flags [big_or_little_endian]
+    set flags "[big_or_little_endian] -I$srcdir/$subdir"
     set exec_output [run_host_cmd "$as" "$flags $in_flags $ASFLAGS -o $object $source"]
     set exec_output [prune_warnings $exec_output]
     if [string match "" $exec_output] then {
@@ -374,9 +410,9 @@ proc ld_simple_link_defsyms {} {
         append flags " --defsym __gccmain=0"
     }
 
-    # Windows targets need __main, prefixed with underscore.
+    # Windows targets need __main, some prefixed with underscore.
     if {[istarget *-*-cygwin* ] || [istarget *-*-mingw*]} {
-        append flags " --defsym ___main=0"
+        append flags " --defsym __main=0 --defsym ___main=0"
     }
 
     # PowerPC EABI code calls __eabi.
@@ -390,7 +426,7 @@ proc ld_simple_link_defsyms {} {
     }
 
     # m6811/m6812 code has references to soft registers.
-    if {[istarget m6811-*-*] || [istarget m6812-*-*]} {
+    if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {
 	append flags " --defsym _.frame=0 --defsym _.d1=0 --defsym _.d2=0"
 	append flags " --defsym _.d3=0 --defsym _.d4=0"
 	append flags " --defsym _.tmp=0 --defsym _.xy=0 --defsym _.z=0"
@@ -406,7 +442,7 @@ proc ld_simple_link_defsyms {} {
     return $flags
 }
 
-# run_dump_test FILE
+# run_dump_test FILE (optional:) EXTRA_OPTIONS
 # Copied from gas testsuite, tweaked and further extended.
 #
 # Assemble a .s file, then run some utility on it and check the output.
@@ -431,6 +467,12 @@ proc ld_simple_link_defsyms {} {
 # list ends with the first line that doesn't match the above syntax
 # (hmm, not great for error detection).
 #
+# The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
+# two-element lists.  The first element of each is an option name, and
+# the second additional arguments to be added on to the end of the
+# option list as given in FILE.d.  (If omitted, no additional options
+# are added.)
+#
 # The interesting options are:
 #
 #   name: TEST-NAME
@@ -450,6 +492,11 @@ proc ld_simple_link_defsyms {} {
 #   ld_after_inputfiles: FLAGS
 #       Similar to "ld", but put after all input files.
 #
+#   objcopy_objects: FLAGS
+#	Run objcopy with the specified flags after assembling any source
+#	that has the special marker RUN_OBJCOPY in the source specific
+#	flags.
+#
 #   objcopy_linked_file: FLAGS
 #	Run objcopy on the linked file with the specified flags.
 #	This lets you transform the linked file using objcopy, before the
@@ -478,6 +525,11 @@ proc ld_simple_link_defsyms {} {
 #       More than one "source" directive can be given, which is useful
 #       when testing linking.
 #
+#   dump: DUMP
+#	Match against DUMP.d.  If omitted, this defaults to FILE.d.  This
+#	is useful if several .d files differ by options only.  Options are
+#	always read from FILE.d.
+#
 #   xfail: TARGET
 #       The test is expected to fail on TARGET.  This may occur more than
 #       once.
@@ -509,7 +561,7 @@ proc ld_simple_link_defsyms {} {
 # regexps in FILE.d.  `regexp_diff' is defined in binutils-common.exp;
 # see further comments there.
 #
-proc run_dump_test { name } {
+proc run_dump_test { name {extra_options {}} } {
     global subdir srcdir
     global OBJDUMP NM AS OBJCOPY READELF LD
     global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
@@ -549,10 +601,11 @@ proc run_dump_test { name } {
     set opts(name) {}
     set opts(PROG) {}
     set opts(source) {}
+    set opts(dump) {}
     set opts(error) {}
     set opts(warning) {}
     set opts(objcopy_linked_file) {}
-    set asflags(${file}.s) {}
+    set opts(objcopy_objects) {}
 
     foreach i $opt_array {
 	set opt_name [lindex $i 0]
@@ -570,13 +623,13 @@ proc run_dump_test { name } {
 	    warning {}
 	    error {}
 	    source {
-		# Move any source-specific as-flags to a separate array to
+		# Move any source-specific as-flags to a separate list to
 		# simplify processing.
 		if { [llength $opt_val] > 1 } {
-		    set asflags([lindex $opt_val 0]) [lrange $opt_val 1 end]
+		    lappend asflags [lrange $opt_val 1 end]
 		    set opt_val [lindex $opt_val 0]
 		} else {
-		    set asflags($opt_val) {}
+		    lappend asflags {}
 		}
 	    }
 	    default {
@@ -599,8 +652,37 @@ proc run_dump_test { name } {
 	if { $opt_name == "as" || $opt_name == "ld" } {
 	    set opt_val [subst $opt_val]
 	}
-	set opts($opt_name) [concat $opts($opt_name) $opt_val]
+
+	# Append differently whether it's a message (without space) or
+	# an option or list (with space).
+	switch -- $opt_name {
+	    warning -
+	    error {
+		append opts($opt_name) $opt_val
+	    }
+	    default {
+		set opts($opt_name) [concat $opts($opt_name) $opt_val]
+	    }
+	}
     }
+
+    foreach i $extra_options {
+	set opt_name [lindex $i 0]
+	set opt_val [lindex $i 1]
+	if ![info exists opts($opt_name)] {
+	    perror "unknown option $opt_name given in extra_opts"
+	    unresolved $subdir/$name
+	    return
+	}
+	# Add extra option to end of existing option, adding space
+	# if necessary.
+	if { ![regexp "warning|error" $opt_name]
+	     && [string length $opts($opt_name)] } {
+	    append opts($opt_name) " "
+	}
+	append opts($opt_name) $opt_val
+    }
+
     foreach opt { as ld } {
 	regsub {\[big_or_little_endian\]} $opts($opt) \
 	    [big_or_little_endian] opts($opt)
@@ -669,6 +751,7 @@ proc run_dump_test { name } {
 
     if { $opts(source) == "" } {
 	set sourcefiles [list ${file}.s]
+	set asflags [list ""]
     } else {
 	set sourcefiles {}
 	foreach sf $opts(source) {
@@ -677,11 +760,21 @@ proc run_dump_test { name } {
 	    } else {
 		lappend sourcefiles "$srcdir/$subdir/$sf"
 	    }
-	    # Must have asflags indexed on source name.
-	    set asflags($srcdir/$subdir/$sf) $asflags($sf)
 	}
     }
 
+    if { $opts(dump) == "" } {
+	set dfile ${file}.d
+    } else {
+	set dfile $srcdir/$subdir/$opts(dump)
+    }
+
+    if { [string match "*--compress-debug-sections*" $opts(as)] \
+	 && ![is_zlib_supported] } {
+	unsupported $testname
+	return
+    }
+
     # Time to setup xfailures.
     foreach targ $opts(xfail) {
 	setup_xfail $targ
@@ -691,11 +784,18 @@ proc run_dump_test { name } {
     set objfiles {}
     for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
 	set sourcefile [lindex $sourcefiles $i]
+	set sourceasflags [lindex $asflags $i]
+	set run_objcopy_objects 0
+
+	if { [string match "*RUN_OBJCOPY*" $sourceasflags] } {
+	    set run_objcopy_objects 1
+	}
+	regsub "RUN_OBJCOPY" $sourceasflags "" sourceasflags
 
 	set objfile "tmpdir/dump$i.o"
 	catch "exec rm -f $objfile" exec_output
 	lappend objfiles $objfile
-	set cmd "$AS $ASFLAGS $opts(as) $asflags($sourcefile) -o $objfile $sourcefile"
+	set cmd "$AS $ASFLAGS $opts(as) $sourceasflags -o $objfile $sourcefile"
 
 	send_log "$cmd\n"
 	set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
@@ -714,6 +814,30 @@ proc run_dump_test { name } {
 	    fail $testname
 	    return
 	}
+
+	if { $run_objcopy_objects } {
+	    set cmd "$OBJCOPY $opts(objcopy_objects) $objfile"
+
+	    send_log "$cmd\n"
+	    set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] \
+			"" "/dev/null" "objcopy.tmp"]
+	    remote_upload host "objcopy.tmp"
+	    set comp_output [prune_warnings [file_contents "objcopy.tmp"]]
+	    remote_file host delete "objcopy.tmp"
+	    remote_file build delete "objcopy.tmp"
+
+	    if { [lindex $cmdret 0] != 0 \
+		  || ![string match "" $comp_output] } {
+		send_log "$comp_output\n"
+		verbose "$comp_output" 3
+
+		set exitstat "succeeded"
+		if { $cmdret != 0 } { set exitstat "failed" }
+		verbose -log "$exitstat with: <$comp_output>"
+		fail $testname
+		return
+	    }
+	}
     }
 
     set expmsg $opts(error)
@@ -836,7 +960,7 @@ proc run_dump_test { name } {
     }
 
     if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 }
-    if { [regexp_diff $dumpfile "${file}.d"] } then {
+    if { [regexp_diff $dumpfile "${dfile}"] } then {
 	fail $testname
 	if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 }
 	return
@@ -846,6 +970,10 @@ proc run_dump_test { name } {
 }
 
 proc slurp_options { file } {
+    # If options_regsub(foo) is set to {a b}, then the contents of a
+    # "#foo:" line will have regsub -all applied to replace a with b.
+    global options_regsub
+
     if [catch { set f [open $file r] } x] {
 	#perror "couldn't open `$file': $x"
 	perror "$x"
@@ -863,6 +991,11 @@ proc slurp_options { file } {
 	# Whitespace here is space-tab.
 	if [regexp $pat $line xxx opt_name opt_val] {
 	    # match!
+	    if [info exists options_regsub($opt_name)] {
+		set subst $options_regsub($opt_name)
+		regsub -all -- [lindex $subst 0] $opt_val [lindex $subst 1] \
+		    opt_val
+	    }
 	    lappend opt_array [list $opt_name $opt_val]
 	} else {
 	    break
@@ -890,7 +1023,7 @@ proc set_file_contents { filename contents } {
 proc ar_simple_create { ar aropts target objects } {
     remote_file host delete $target
 
-    set exec_output [run_host_cmd "$ar" "$aropts rc $target $objects"]
+    set exec_output [run_host_cmd "$ar" "$aropts -rc $target $objects"]
     set exec_output [prune_warnings $exec_output]
 
     if [string match "" $exec_output] then {
@@ -904,19 +1037,20 @@ proc ar_simple_create { ar aropts target objects } {
 # List contains test-items with 3 items followed by 2 lists, one item and
 # one optional item:
 #  0:name
-#  1:ld/ar options
-#  2:assembler options
-#  3:filenames of assembler files
-#  4:list of actions, options and expected outputs.
-#  5:name of output file
-#  6:compiler flags (optional)
+#  1:ld/ar leading options, placed before object files
+#  2:ld/ar trailing options, placed after object files
+#  3:assembler options
+#  4:filenames of assembler files
+#  5:list of actions, options and expected outputs.
+#  6:name of output file
+#  7:compiler flags (optional)
 #
 # Actions: { command command-line-options file-containg-expected-output-regexps }
 # Commands:
 #   objdump: Apply objdump options on result.
 #   nm: Apply nm options on result.
 #   readelf: Apply readelf options on result.
-#   ld: Don't apply anything on result.  Compare output during linking with 
+#   ld: Don't apply anything on result.  Compare output during linking with
 #     the file containing regexps (which is the second arg, not the third).
 #     Note that this *must* be the first action if it is to be used at all;
 #     in all other cases, any output from the linker during linking is
@@ -945,11 +1079,12 @@ proc run_ld_link_tests { ldtests } {
 	}
 
 	set ld_options [lindex $testitem 1]
-	set as_options [lindex $testitem 2]
-	set src_files  [lindex $testitem 3]
-	set actions [lindex $testitem 4]
-	set binfile tmpdir/[lindex $testitem 5]
-	set cflags [lindex $testitem 6]
+	set ld_after [lindex $testitem 2]
+	set as_options [lindex $testitem 3]
+	set src_files  [lindex $testitem 4]
+	set actions [lindex $testitem 5]
+	set binfile tmpdir/[lindex $testitem 6]
+	set cflags [lindex $testitem 7]
 	set objfiles {}
 	set is_unresolved 0
 	set failed 0
@@ -958,6 +1093,7 @@ proc run_ld_link_tests { ldtests } {
 
 #	verbose -log "Testname is $testname"
 #	verbose -log "ld_options is $ld_options"
+#	verbose -log "ld_after is $ld_after"
 #	verbose -log "as_options is $as_options"
 #	verbose -log "src_files is $src_files"
 #	verbose -log "actions is $actions"
@@ -965,11 +1101,12 @@ proc run_ld_link_tests { ldtests } {
 
 	# Assemble each file in the test.
 	foreach src_file $src_files {
-	    set objfile "tmpdir/[file rootname $src_file].o"
+	    set fileroot "[file rootname [file tail $src_file]]"
+	    set objfile "tmpdir/$fileroot.o"
 	    lappend objfiles $objfile
 
 	    if { [file extension $src_file] == ".c" } {
-		set as_file "tmpdir/[file rootname $src_file].s"
+		set as_file "tmpdir/$fileroot.s"
 		if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] {
 		    set is_unresolved 1
 		    break
@@ -989,11 +1126,13 @@ proc run_ld_link_tests { ldtests } {
 	    continue
 	}
 
-	if { [regexp ".*\\.a$" $binfile] } {
-	    if { ![ar_simple_create $ar $ld_options $binfile "$objfiles"] } {
+	if { $binfile eq "tmpdir/" } {
+	    # compile only
+	} elseif { [regexp ".*\\.a$" $binfile] } {
+	    if { ![ar_simple_create $ar $ld_options $binfile "$objfiles $ld_after"] } {
 		set failed 1
 	    }
-	} elseif { ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles"] } {
+	} elseif { ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles $ld_after"] } {
 	    set maybe_failed 1
 	    set ld_output "$exec_output"
 	}
@@ -1051,7 +1190,7 @@ proc run_ld_link_tests { ldtests } {
     		    set comp_output [prune_warnings [file_contents "ld.stderr"]]
     		    remote_file host delete "ld.stderr"
     		    remote_file build delete "ld.stderr"
-                    
+
 		    if {[info exists old_lc_all]} {
 			set env(LC_ALL) $old_lc_all
 		    } else {
@@ -1158,12 +1297,12 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
 #	verbose -log "ld_options is $ld_options"
 #	verbose -log "as_options is $as_options"
 #	verbose -log "src_files is $src_files"
-#	verbose -log "actions is $actions"
 #	verbose -log "binfile is $binfile"
 
 	# Assemble each file in the test.
 	foreach src_file $src_files {
-	    set objfile "tmpdir/[file rootname $src_file].o"
+	    set fileroot "[file rootname [file tail $src_file]]"
+	    set objfile "tmpdir/$fileroot.o"
 	    lappend objfiles $objfile
 
 	    # We ignore warnings since some compilers may generate
@@ -1174,68 +1313,70 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
 	    } else {
 		ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
 	    }
+	}
+
+	# We have to use $CC to build PIE and shared library.
+	if { [ string match "c" $lang ] } {
+	    set link_proc ld_simple_link
+	    set link_cmd $CC
+	} elseif { [ string match "c++" $lang ] } {
+	    set link_proc ld_simple_link
+	    set link_cmd $CXX
+	} elseif { [ string match "-shared" $ld_options ] \
+		   || [ string match "-pie" $ld_options ] } {
+	    set link_proc ld_simple_link
+	    set link_cmd $CC
+	} else {
+	    set link_proc ld_link
+	    set link_cmd $ld
+	}
+
+	if { $binfile eq "tmpdir/" } {
+	    # compile only
+	    pass $testname
+	    continue;
+	} elseif ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
+	    set failed 1
+	}
 
-	    # We have to use $CC to build PIE and shared library.
-	    if { [ string match "c" $lang ] } {
-		set link_proc ld_simple_link
-		set link_cmd $CC
-	    } elseif { [ string match "c++" $lang ] } {
-		set link_proc ld_simple_link
-		set link_cmd $CXX
-	    } elseif { [ string match "-shared" $ld_options ] \
-		 || [ string match "-pie" $ld_options ] } {
-		set link_proc ld_simple_link
-		set link_cmd $CC
+	# Check if exec_output is expected.
+	if { $warning != "" } then {
+	    verbose -log "returned with: <$exec_output>, expected: <$warning>"
+	    if { [regexp $warning $exec_output] } then {
+		set failed 0
 	    } else {
-		set link_proc ld_link
-		set link_cmd $ld
+		set failed 1
 	    }
+	}
 
-	    if ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
+	if { $failed == 0 } {
+	    send_log "Running: $binfile > $binfile.out\n"
+	    verbose "Running: $binfile > $binfile.out"
+	    catch "exec $binfile > $binfile.out" exec_output
+
+	    if ![string match "" $exec_output] then {
+		send_log "$exec_output\n"
+		verbose "$exec_output" 1
 		set failed 1
 	    } else {
-		set failed 0
-	    }
-
-	    # Check if exec_output is expected.
-	    if { $warning != "" } then {
-		verbose -log "returned with: <$exec_output>, expected: <$warning>"
-		if { [regexp $warning $exec_output] } then {
-		    set failed 0
-		} else {
-		    set failed 1
-		}
-	    }
+		send_log "diff $binfile.out $srcdir/$subdir/$expfile\n"
+		verbose "diff $binfile.out $srcdir/$subdir/$expfile"
+		catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output
+		set exec_output [prune_warnings $exec_output]
 
-	    if { $failed == 0 } {
-		send_log "Running: $binfile > $binfile.out\n"
-		verbose "Running: $binfile > $binfile.out"
-		catch "exec $binfile > $binfile.out" exec_output
-	    
 		if ![string match "" $exec_output] then {
 		    send_log "$exec_output\n"
 		    verbose "$exec_output" 1
 		    set failed 1
-		} else {
-		    send_log "diff $binfile.out $srcdir/$subdir/$expfile\n"
-		    verbose "diff $binfile.out $srcdir/$subdir/$expfile"
-		    catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output
-		    set exec_output [prune_warnings $exec_output]
-
-		    if ![string match "" $exec_output] then {
-			send_log "$exec_output\n"
-			verbose "$exec_output" 1
-			set failed 1
-		    }
 		}
 	    }
+	}
 
-	    if { $failed != 0 } {
-		fail $testname
-	    } else {
-		set errcnt 0
-		pass $testname
-	    }
+	if { $failed != 0 } {
+	    fail $testname
+	} else {
+	    set errcnt 0
+	    pass $testname
 	}
     }
 }
@@ -1283,9 +1424,19 @@ proc run_cc_link_tests { ldtests } {
 	set is_unresolved 0
 	set failed 0
 
+	#verbose -log "testname  is $testname"
+	#verbose -log "ldflags   is $ldflags"
+	#verbose -log "cflags    is $cflags"
+	#verbose -log "src_files is $src_files"
+	#verbose -log "actions   is $actions"
+	#verbose -log "binfile   is $binfile"
+	#verbose -log "lang      is $lang"
+	#verbose -log "warnings  is $warnings"
+
 	# Compile each file in the test.
 	foreach src_file $src_files {
-	    set objfile "tmpdir/[file rootname $src_file].o"
+	    set fileroot "[file rootname [file tail $src_file]]"
+	    set objfile "tmpdir/$fileroot.o"
 	    lappend objfiles $objfile
 
 	    # We ignore warnings since some compilers may generate
@@ -1307,14 +1458,18 @@ proc run_cc_link_tests { ldtests } {
 	    set cc_cmd $CC
 	}
 
-	if { [regexp ".*\\.a$" $binfile] } {
+	if { $binfile eq "tmpdir/" } {
+	    # compile only
+	} elseif { [regexp ".*\\.a$" $binfile] } {
 	    if { ![ar_simple_create $ar $ldflags $binfile "$objfiles"] } {
 		fail $testname
 		set failed 1
-	    } else {
-		set failed 0
 	    }
-	} elseif { ![ld_simple_link $cc_cmd $binfile "-L$srcdir/$subdir $ldflags $objfiles"] } {
+	} else {
+	    if { ![ld_simple_link $cc_cmd $binfile "-L$srcdir/$subdir $ldflags $objfiles"] } {
+		set failed 1
+	    }
+
 	    # Check if exec_output is expected.
 	    if { $warnings != "" } then {
 		verbose -log "returned with: <$exec_output>, expected: <$warnings>"
@@ -1323,12 +1478,11 @@ proc run_cc_link_tests { ldtests } {
 		} else {
 		    set failed 1
 		}
-	    } else {
+	    }
+
+	    if { $failed == 1 } {
 		fail $testname
-		set failed 1
 	    }
-	} else {
-	    set failed 0
 	}
 
 	if { $failed == 0 } {
@@ -1387,16 +1541,13 @@ proc run_cc_link_tests { ldtests } {
 		    }
 		}
 	    }
-
-	    if { $failed != 0 } {
-		fail $testname
-	    } else { if { $is_unresolved == 0 } {
-		pass $testname
-	    } }
 	}
 
-	# Catch action errors.
-	if { $is_unresolved != 0 } {
+	if { $failed != 0 } {
+	    fail $testname
+	} elseif { $is_unresolved == 0 } {
+	    pass $testname
+	} else {
 	    unresolved $testname
 	    continue
 	}
@@ -1408,25 +1559,24 @@ proc run_cc_link_tests { ldtests } {
 proc check_gc_sections_available { } {
     global gc_sections_available_saved
     global ld
-    
+
     if {![info exists gc_sections_available_saved]} {
 	# Some targets don't support gc-sections despite whatever's
 	# advertised by ld's options.
-	if {[istarget arc-*-*]
-	     || [istarget d30v-*-*]
-	     || [istarget dlx-*-*]
-	     || [istarget i960-*-*]
-	     || [istarget or32-*-*]
-	     || [istarget pj*-*-*]
-	     || [istarget alpha-*-*]
-	     || [istarget hppa64-*-*]
-	     || [istarget i370-*-*]
-	     || [istarget i860-*-*]
-	     || [istarget ia64-*-*]
-	     || [istarget mep-*-*]
-	     || [istarget mn10200-*-*]
-	     || [istarget *-*-cygwin]
-	     || [istarget *-*-mingw*] } {
+	if {   [istarget arc-*-*]
+	    || [istarget d30v-*-*]
+	    || [istarget dlx-*-*]
+	    || [istarget i960-*-*]
+	    || [istarget pj*-*-*]
+	    || [istarget alpha-*-*]
+	    || [istarget hppa*64-*-*]
+	    || [istarget i370-*-*]
+	    || [istarget i860-*-*]
+	    || [istarget ia64-*-*]
+	    || [istarget mep-*-*]
+	    || [istarget mn10200-*-*]
+	    || [istarget *-*-cygwin]
+	    || [istarget *-*-mingw*] } {
 	    set gc_sections_available_saved 0
 	    return 0
 	}
@@ -1440,6 +1590,8 @@ proc check_gc_sections_available { } {
 	}
 
 	# Check if the ld used by gcc supports --gc-sections.
+	# FIXME: this test is useless since ld --help always says
+	# --gc-sections is available
 	set ld_output [remote_exec host $ld "--help"]
 	if { [ string first "--gc-sections" $ld_output ] >= 0 } {
 	    set gc_sections_available_saved 1
@@ -1450,6 +1602,57 @@ proc check_gc_sections_available { } {
     return $gc_sections_available_saved
 }
 
+# Returns true if -shared is supported on the target
+# Only used and accurate for ELF targets at the moment
+
+proc check_shared_lib_support { } {
+    if {![istarget aarch64*-*-elf]
+	 && ![istarget arc-*-*]
+	 && ![istarget arm*-*-elf]
+	 && ![istarget avr-*-*]
+	 && ![istarget cr16-*-*]
+	 && ![istarget cris*-*-elf]
+	 && ![istarget crx-*-*]
+	 && ![istarget d10v-*-*]
+	 && ![istarget d30v-*-*]
+	 && ![istarget dlx-*-*]
+	 && ![istarget epiphany-*-*]
+	 && ![istarget fr30-*-*]
+	 && ![istarget frv-*-*]
+	 && ![istarget h8300-*-*]
+	 && ![istarget i860-*-*]
+	 && ![istarget i960-*-*]
+	 && ![istarget ip2k-*-*]
+	 && ![istarget iq2000-*-*]
+	 && ![istarget lm32-*-*]
+	 && ![istarget m32c-*-*]
+	 && ![istarget m32r-*-*]
+	 && ![istarget m6811-*-*]
+	 && ![istarget m6812-*-*]
+	 && ![istarget m68hc1*-*-*]
+	 && ![istarget mcore*-*-*]
+	 && ![istarget mep-*-*]
+	 && ![istarget microblaze-*-*]
+	 && ![istarget mips*-*-elf]
+	 && ![istarget mn10200-*-*]
+	 && ![istarget moxie-*-*]
+	 && ![istarget msp430-*-*]
+	 && ![istarget mt-*-*]
+	 && ![istarget nds32*-*-*]
+	 && ![istarget or1k*-*-*]
+	 && ![istarget pj-*-*]
+	 && ![istarget rl78-*-*]
+	 && ![istarget rx-*-*]
+	 && ![istarget spu-*-*]
+	 && ![istarget v850*-*-*]
+	 && ![istarget xstormy16-*-*]
+	 && ![istarget *-*-irix*]
+	 && ![istarget *-*-rtems] } {
+	return 1
+    }
+    return 0
+}
+
 # Returns true if the target ld supports the plugin API.
 proc check_plugin_api_available { } {
     global plugin_api_available_saved
@@ -1457,7 +1660,7 @@ proc check_plugin_api_available { } {
     if {![info exists plugin_api_available_saved]} {
 	# Check if the ld used by gcc supports --plugin.
 	set ld_output [remote_exec host $ld "--help"]
-	if { [ string first "-plugin" $ld_output ] >= 0 } {
+	if { [ string first "-plugin PLUGIN" $ld_output ] >= 0 } {
 	    set plugin_api_available_saved 1
 	} else {
 	    set plugin_api_available_saved 0
@@ -1466,6 +1669,126 @@ proc check_plugin_api_available { } {
     return $plugin_api_available_saved
 }
 
+# Returns true if the target ld supports sysroot.
+proc check_sysroot_available { } {
+    global ld_sysroot_available_saved
+    global ld
+    if {![info exists ld_sysroot_available_saved]} {
+	# Check if ld supports --sysroot *other* than empty
+	# (non-sysroot linkers don't emit errors for --sysroot="").
+	# The help-text by itself is no indication as it always lists --sysroot.
+	set status [remote_exec host $ld "--sysroot=ldxyzzy --help >/dev/null"]
+	if { [lindex $status 0] != 0 } {
+	    set ld_sysroot_available_saved 0
+	} else {
+	    set ld_sysroot_available_saved 1
+	}
+    }
+    return $ld_sysroot_available_saved
+}
+
+# Returns true if the target compiler supports LTO
+proc check_lto_available { } {
+    global lto_available_saved
+    global CC
+
+    if {![info exists lto_available_saved]} {
+        if { [which $CC] == 0 } {
+	    set lto_available_saved 0
+	    return 0
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/lto[pid]"
+	set src ${basename}.c
+	set output ${basename}.out
+	set f [open $src "w"]
+	puts $f "int main() { return 0; }"
+	close $f
+	remote_download host $src
+	set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $lto_available_saved
+}
+
+# Returns true if the target compiler supports LTO  -ffat-lto-objects
+proc check_lto_fat_available { } {
+    global lto_fat_available_saved
+    global CC
+
+    if {![info exists lto_fat_available_saved]} {
+        if { [which $CC] == 0 } {
+	    set lto_fat_available_saved 0
+	    return 0
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/lto[pid]"
+	set src ${basename}.c
+	set output ${basename}.out
+	set f [open $src "w"]
+	puts $f "int main() { return 0; }"
+	close $f
+	remote_download host $src
+	set lto_fat_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $lto_fat_available_saved
+}
+
+# Returns true if the target compiler supports LTO and -shared
+proc check_lto_shared_available { } {
+    global lto_shared_available_saved
+    global CC
+
+    if {![info exists lto_shared_available_saved]} {
+        if { [which $CC] == 0 } {
+	    set lto_shared_available_saved 0
+	    return 0
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin -shared
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/lto_shared[pid]"
+	set src ${basename}.c
+	set output ${basename}.so
+	set f [open $src "w"]
+	puts $f ""
+	close $f
+	remote_download host $src
+	set lto_shared_available_saved [run_host_cmd_yesno "$CC" "$flags -shared -fPIC -flto -fuse-linker-plugin $src -o $output"]
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $lto_shared_available_saved
+}
+
 # Check if the assembler supports CFI statements.
 
 proc check_as_cfi { } {