[PATCH RESEND v3 3/3] perf dwarf-aux: Fix build fail when HAVE_DWARF_GETLOCATIONS_SUPPORT undefined

Yang Jihong
2024-09-19T01:35:53Z

commit 3796eba7c137 move #else block of #ifdef HAVE_DWARF_GETLOCATIONS_SUPPORT
code from dwarf-aux.c to dwarf-aux.h, in which die_get_var_range() used ENOTSUP
macro, but dwarf-aux.h was not self-contained and did not include file errno.h.

As a result, the build failed when HAVE_DWARF_GETLOCATIONS_SUPPORT macro was not
defined, and the error log is as follows:

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:184:10: error: 'ENOTSUP' undeclared (first use in this function)
184 | return -ENOTSUP;
| ^~~~~~~
util/dwarf-aux.h:184:10: note: each undeclared identifier is reported only once for each function it appears

Fixes: 3796eba7c137 ("perf dwarf-aux: Move #else block of #ifdef HAVE_DWARF_GETLOCATIONS_SUPPORT code to the header file")
Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Yang Jihong <yangjihong@bytedance.com>
---
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..f0d702b9ad75 100644
--- a/tools/perf/util/dwarf-aux.h
+++ b/tools/perf/util/dwarf-aux.h
@@ -6,6 +6,7 @@
*/

#include <dwarf.h>
+#include <errno.h>
#include <elfutils/libdw.h>
#include <elfutils/libdwfl.h>
#include <elfutils/version.h>
--
2.25.1