Fix --gdwarf-5 configure tests for Windows

The issues are that 1) they use readelf instead of objdump and 2) they use
ELF syntax in the assembly code.

gcc/
	* configure.ac (--gdwarf-5 option): Use objdump instead of readelf.
	(working --gdwarf-4/--gdwarf-5 for all sources): Likewise.
	(--gdwarf-4 not refusing generated .debug_line): Adjust for Windows.
	* configure: Regenerate.

diff --git a/gcc/configure b/gcc/configure
index dd0194a..f0b2ebd 100755 (executable)
--- a/gcc/configure
+++ b/gcc/configure
@@ -29145,8 +29145,8 @@ fi
   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; }
     then
-       if test x$gcc_cv_readelf != x \
-      && $gcc_cv_readelf -wi conftest.o 2>&1 \
+       if test x$gcc_cv_objdump != x \
+      && $gcc_cv_objdump -Wi conftest.o 2>&1 \
         | grep DW_TAG_compile_unit > /dev/null 2>&1; then
      gcc_cv_as_gdwarf_5_flag=yes;
    fi
@@ -29166,6 +29166,16 @@ $as_echo "#define HAVE_AS_GDWARF_5_DEBUG_FLAG 1" >>confdefs.h
 fi
 
 
+ case $target_os in
+   win32 | pe | cygwin* | mingw32*)
+     section_flags=\"dr\"
+     function_type=".def foo; .scl 2; .type 32; .endef"
+     function_size="";;
+   *)
+     section_flags=\"\",%progbits
+     function_type=".type foo, %function"
+     function_size=".size foo, .-foo";;
+ esac
  dwarf4_debug_info_size=0x46
  dwarf4_high_pc_form=7
  dwarf4_debug_aranges_size=0x2c
@@ -29177,16 +29187,16 @@ fi
 .Ltext0:
        .p2align 4
        .globl  foo
-       .type   foo, %function
+       $function_type
 foo:
 .LFB0:
 .LM1:
        $insn
 .LM2:
 .LFE0:
-       .size   foo, .-foo
+       $function_size
 .Letext0:
-       .section        .debug_info,\"\",%progbits
+       .section        .debug_info,$section_flags
 .Ldebug_info0:
        .4byte  $dwarf4_debug_info_size
        .2byte  0x4
@@ -29210,7 +29220,7 @@ foo:
        .byte   0x1
        .byte   0x9c
        .byte   0
-       .section        .debug_abbrev,\"\",%progbits
+       .section        .debug_abbrev,$section_flags
 .Ldebug_abbrev0:
        .byte   0x1
        .byte   0x11
@@ -29253,7 +29263,7 @@ foo:
        .byte   0
        .byte   0
        .byte   0
-       .section        .debug_aranges,\"\",%progbits
+       .section        .debug_aranges,$section_flags
        .4byte  $dwarf4_debug_aranges_size
        .2byte  0x2
        .4byte  .Ldebug_info0
@@ -29265,7 +29275,7 @@ foo:
        .${dwarf4_addr_size}byte        .Letext0-.Ltext0
        .${dwarf4_addr_size}byte        0
        .${dwarf4_addr_size}byte        0
-       .section        .debug_line,\"\",%progbits
+       .section        .debug_line,$section_flags
 .Ldebug_line0:
        .4byte  .LELT0-.LSLT0
 .LSLT0:
@@ -29319,7 +29329,7 @@ foo:
        .byte   0x1
        .byte   0x1
 .LELT0:
-       .section        .debug_str,\"\",%progbits
+       .section        .debug_str,$section_flags
        .ident  \"GCC\"
 "
    dwarf4_success=no
@@ -29491,10 +29501,10 @@ fi
    conftest_s="\
        .text
        .globl  foo
-       .type   foo, %function
+       $function_type
 foo:
        $insn
-       .size   foo, .-foo
+       $function_size
        .file   1 \"foo.c\"
 "
    { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for working --gdwarf-4/--gdwarf-5 for all sources" >&5
@@ -29512,8 +29522,8 @@ else
   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; }
     then
-             if test x$gcc_cv_readelf != x \
-        && $gcc_cv_readelf -w conftest.o 2>&1 \
+             if test x$gcc_cv_objdump != x \
+        && $gcc_cv_objdump -W conftest.o 2>&1 \
                | grep conftest.s > /dev/null 2>&1; then
        gcc_cv_as_working_gdwarf_n_flag=no
       else

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 5f30f80..7008939 100644 (file)
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -5457,13 +5457,23 @@ if test x"$insn" != x; then
  gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
   gcc_cv_as_gdwarf_5_flag,
   [elf,2,36,0], [--gdwarf-5], [$insn],
-  [if test x$gcc_cv_readelf != x \
-      && $gcc_cv_readelf -wi conftest.o 2>&1 \
+  [if test x$gcc_cv_objdump != x \
+      && $gcc_cv_objdump -Wi conftest.o 2>&1 \
         | grep DW_TAG_compile_unit > /dev/null 2>&1; then
      gcc_cv_as_gdwarf_5_flag=yes;
    fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
 [Define if your assembler supports the --gdwarf-5 option.])])
 
+ case $target_os in
+   win32 | pe | cygwin* | mingw32*)
+     section_flags=\"dr\"
+     function_type=".def foo; .scl 2; .type 32; .endef"
+     function_size="";;
+   *)
+     section_flags=\"\",%progbits
+     function_type=".type foo, %function"
+     function_size=".size foo, .-foo";;
+ esac
  dwarf4_debug_info_size=0x46
  dwarf4_high_pc_form=7
  dwarf4_debug_aranges_size=0x2c
@@ -5475,16 +5485,16 @@ if test x"$insn" != x; then
 .Ltext0:
        .p2align 4
        .globl  foo
-       .type   foo, %function
+       $function_type
 foo:
 .LFB0:
 .LM1:
        $insn
 .LM2:
 .LFE0:
-       .size   foo, .-foo
+       $function_size
 .Letext0:
-       .section        .debug_info,\"\",%progbits
+       .section        .debug_info,$section_flags
 .Ldebug_info0:
        .4byte  $dwarf4_debug_info_size
        .2byte  0x4
@@ -5508,7 +5518,7 @@ foo:
        .byte   0x1
        .byte   0x9c
        .byte   0
-       .section        .debug_abbrev,\"\",%progbits
+       .section        .debug_abbrev,$section_flags
 .Ldebug_abbrev0:
        .byte   0x1
        .byte   0x11
@@ -5551,7 +5561,7 @@ foo:
        .byte   0
        .byte   0
        .byte   0
-       .section        .debug_aranges,\"\",%progbits
+       .section        .debug_aranges,$section_flags
        .4byte  $dwarf4_debug_aranges_size
        .2byte  0x2
        .4byte  .Ldebug_info0
@@ -5563,7 +5573,7 @@ foo:
        .${dwarf4_addr_size}byte        .Letext0-.Ltext0
        .${dwarf4_addr_size}byte        0
        .${dwarf4_addr_size}byte        0
-       .section        .debug_line,\"\",%progbits
+       .section        .debug_line,$section_flags
 .Ldebug_line0:
        .4byte  .LELT0-.LSLT0
 .LSLT0:
@@ -5617,7 +5627,7 @@ foo:
        .byte   0x1
        .byte   0x1
 .LELT0:
-       .section        .debug_str,\"\",%progbits
+       .section        .debug_str,$section_flags
        .ident  \"GCC\"
 "
    dwarf4_success=no
@@ -5673,10 +5683,10 @@ foo:
    conftest_s="\
        .text
        .globl  foo
-       .type   foo, %function
+       $function_type
 foo:
        $insn
-       .size   foo, .-foo
+       $function_size
        .file   1 \"foo.c\"
 "
    gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
@@ -5684,8 +5694,8 @@ foo:
      [--gdwarf-4],
      [$conftest_s],
      [changequote(,)dnl
-      if test x$gcc_cv_readelf != x \
-        && $gcc_cv_readelf -w conftest.o 2>&1 \
+      if test x$gcc_cv_objdump != x \
+        && $gcc_cv_objdump -W conftest.o 2>&1 \
                | grep conftest.s > /dev/null 2>&1; then
        gcc_cv_as_working_gdwarf_n_flag=no
       else