[PATCH] perf dwarf-aux: Fix build with !HAVE_DWARF_GETLOCATIONS_SUPPORT

[James Clark]

The linked fixes commit added an #include "dwarf-aux.h" to disasm.h
which gets picked up in a lot of places. Without
HAVE_DWARF_GETLOCATIONS_SUPPORT the stubs return an errno, so include
errno.h to fix the following build error:

  In file included from util/disasm.h:8,
                 from util/annotate.h:16,
                 from builtin-top.c:23:
  util/dwarf-aux.h: In function 'die_get_var_range':
  util/dwarf-aux.h:183:10: error: 'ENOTSUP' undeclared (first use in this function)
    183 |  return -ENOTSUP;
        |          ^~~~~~~

Fixes: 782959ac248a ("perf annotate: Add "update_insn_state" callback function to handle arch specific instruction tracking")
Signed-off-by: James Clark <james.clark@xxxxxxxxxx>
---
 tools/perf/util/dwarf-aux.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h
index 336a3a183a78..bd7505812569 100644
--- a/tools/perf/util/dwarf-aux.h
+++ b/tools/perf/util/dwarf-aux.h
@@ -9,6 +9,7 @@
 #include <elfutils/libdw.h>
 #include <elfutils/libdwfl.h>
 #include <elfutils/version.h>
+#include <errno.h>
 
 struct strbuf;
 
-- 
2.34.1