Emit a warning when -z relro is unsupported

[thirdparty/binutils-gdb.git] / ld / testsuite / config / default.exp

diff --git a/ld/testsuite/config/default.exp b/ld/testsuite/config/default.exp
index 64b78cd18a474b10a1fd68f6503c78c42d05f1c4..9e89ca1283472c2ab071fb65104007e3246f7a1a 100644 (file)
--- a/ld/testsuite/config/default.exp
+++ b/ld/testsuite/config/default.exp
@@ -76,9 +76,6 @@ if {[file exists tmpdir/libpath.exp]} {
     }
 }
 
-# Many ELF testcases expect that "-z relro" is off.
-set ld_elf_shared_opt "-z norelro"
-
 # The "make check" target in the Makefile passes in
 # "CC=$(CC_FOR_TARGET)".  But, if the user invokes runtest directly
 # (as when testing an installed linker), these flags may not be set.  
@@ -95,6 +92,55 @@ if {![info exists CXXFLAGS]} {
     set CXXFLAGS ""
 }
 
+# This allows us to run the linker testsuite with clang as the compilation
+# driver instead of gcc.  The syntax of the overrides are as follows, one
+# per line:
+#
+#  '#': Silence information about the changes to the command line arguments.
+#
+#  '^': Add FOO as a new argument at the beginning of the command line.
+#
+#  '+': Add FOO as a new argument at the end of the command line.
+#
+#  's/XXX/YYY/': Substitute the regular expression XXX with YYY in the command
+#  line.
+#
+#  'xOPTION': Removes all instances of the literal argument OPTION.
+#
+#  'XOPTION': Removes all instances of the literal argument OPTION,
+#  and the following argument.
+#
+#  'Ox': Removes all flags matching 'O' or 'O[sz0-9]' and adds 'Ox'
+#  at the end of the command line.
+#
+# \param OS - The stream to write edit information to.
+# \param Args - The vector of command line arguments.
+# \param Edit - The override command to perform.
+# \param SavedStrings - Set to use for storing string representations.
+
+# Only set up the environment variable if the user has not already provided one.
+if {! [info exists env(CCC_OVERRIDE_OPTIONS)]} {
+    set env(CCC_OVERRIDE_OPTIONS) "#\
+  +-Wno-unused-command-line-argument \
+  +-Wno-unknown-attributes \
+  +-Wno-tautological-compare \
+  +-Wno-ignored-optimization-argument \
+  +-Wno-deprecated \
+  +-fuse-ld=$ld \
+  x-Wa,--elf-stt-common=yes \
+  x-Wa,-mx86-used-note=no \
+  x-Wa,-mx86-used-note=yes \
+  x-Wa,-madd-bnd-prefix \
+  x-fno-early-inlining \
+  x-fno-toplevel-reorder \
+  x-flto-partition=none \
+  x-feliminate-dwarf2-dups \
+  s/-Wa,-mrelax-relocations=yes,-mx86-used-note=yes/-Wa,-mrelax-relocations=yes/ \
+  s/-Wa,--compress-debug-sections=zlib/-Wa,-compress-debug-sections=zlib/ \
+  s/-Wa,--compress-debug-sections=zlib-gabi/-Wa,-compress-debug-sections=zlib-gabi/ \
+"
+}
+
 # The mips64-*-linux-gnu compiler defaults to the N32 ABI after
 # installed, but to the O32 ABI in the build tree, because of some
 # specs-file hacks.  Make sure we use an ABI that is compatible with
@@ -529,3 +575,41 @@ if { ![info exists STATIC_PIE_LDFLAGS] } then {
        set STATIC_PIE_LDFLAGS ""
     }
 }
+
+# Set NOSANTIZE_CFLAGS to "-fno-sanitize=all" if target compiler
+# supports it.
+
+if { ![info exists NOSANTIZE_CFLAGS] } then {
+    if { [check_compiler_available] } {
+       # Check if gcc supports -fno-sanitize=all.
+       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/available[pid]"
+       set src ${basename}.c
+       set output ${basename}
+       set f [open $src "w"]
+       puts $f "int main (void) { return 0; }"
+       close $f
+       if [is_remote host] {
+           set src [remote_download host $src]
+       }
+       set available [run_host_cmd_yesno "$CC" "$flags -fno-sanitize=all $src -o $output"]
+       remote_file host delete $src
+       remote_file host delete $output
+       file delete $src
+
+       if { $available == 1 } then {
+           set NOSANTIZE_CFLAGS "-fno-sanitize=all"
+       } else {
+           set NOSANTIZE_CFLAGS ""
+       }
+    } else {
+       set NOSANTIZE_CFLAGS ""
+    }
+}