From: Iain Sandoe <iain@sandoe.co.uk>
Date: Fri, 2 Jul 2021 08:51:57 +0000 (+0100)
Subject: Darwin, CTF, BTF: Do not run the DWARF debug link for BTF/CTF [PR101283].
X-Git-Tag: basepoints/gcc-13~6330
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85017431068251628478f38346c273418c71209b;p=thirdparty%2Fgcc.git

Darwin, CTF, BTF: Do not run the DWARF debug link for BTF/CTF [PR101283].

Darwin uses an efficient two-stage process for debug linking.
The static linker (ld64) notes the inputs required but does not
link the debug.  When required / on demand the debug is linked
into a separate package by the debug linker (dsymutil).  At
present none of the Darwin tools consume or understand BTF/CTF.
The static linker silently accepts the sections (but will not
act on them as containing anything to be processed).

However, the debug linker produces a warning that it has been
presented with input with no [DWARF] debug content:
warning: no debug symbols in executable (-arch x86_64).

This causes several testsuite fails with excess errors.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>

PR debug/101283 - Several tests fail on Darwin with -gctf/gbtf

	PR debug/101283

gcc/ChangeLog:

	* config/darwin.h (DSYMUTIL_SPEC): Do not try to run
	dsymutil for BTF/CTF.
---

diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h
index 6840aebe7946..5f1197899732 100644
--- a/gcc/config/darwin.h
+++ b/gcc/config/darwin.h
@@ -250,10 +250,10 @@ extern GTY(()) int darwin_ms_struct;
 #define DSYMUTIL_SPEC \
    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
     %{v} \
-    %{g*:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
+    %{g*:%{!gctf:%{!gbtf:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}}}\
     %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|\
       .f95|.f03|.f77|.for|.F|.F90|.F95|.F03: \
-    %{g*:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
+    %{g*:%{!gctf:%{!gbtf:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}}}"
 
 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC