Allow lto tests to run with older compilers

	* lib/ld-lib.exp (check_lto_fat_available): New.
	(check_lto_available): Remove -ffat-lto-objects test.
	* ld-plugin/lto.exp: Use [list ] rather than { } to set up list
	variables, allowing substition of vars.  Set lto_fat and plug_opt
	and add to various tests.

1 files changed, 44 insertions, 1 deletions

diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp
index 9dac6be..c4ce0e7 100644
--- a/ld/testsuite/lib/ld-lib.exp
+++ b/ld/testsuite/lib/ld-lib.exp
@@ -1424,6 +1424,15 @@ 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 fileroot "[file rootname [file tail $src_file]]"
@@ -1686,7 +1695,7 @@ proc check_lto_available { } {
 	puts $f "int main() { return 0; }"
 	close $f
 	remote_download host $src
-	set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
+	set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
 	remote_file host delete $src
 	remote_file host delete $output
 	file delete $src
@@ -1694,6 +1703,40 @@ proc check_lto_available { } {
     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