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* [gcc r12-2189] Fix build failure on Windows with older binutils
@ 2021-07-09 10:14 Eric Botcazou
0 siblings, 0 replies; only message in thread
From: Eric Botcazou @ 2021-07-09 10:14 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:e37e175e7dc3376244eb7705269ada6755616831
commit r12-2189-ge37e175e7dc3376244eb7705269ada6755616831
Author: Eric Botcazou <ebotcazou@adacore.com>
Date: Fri Jul 9 12:08:52 2021 +0200
Fix build failure on Windows with older binutils
This is the build failure on Windows with binutils for which GNU as accepts
the --gdwarf-5 switch but GNU ld generates broken binaries with DWARF 5.
We already have the HAVE_LD_BROKEN_PE_DWARF5 kludge to disable DWARF 5 in
this case but it only tames the DWARF version in the compiler, so the
driver still passes --gdwarf-5 when invoked on an assembly file with -g.
gcc/
PR target/101377
* gcc.c (ASM_DEBUG_DWARF_OPTION): Set again to --gdwarf2 in
the case where HAVE_AS_WORKING_DWARF_N_FLAG is not defined
and HAVE_LD_BROKEN_PE_DWARF5 is defined.
Diff:
---
gcc/gcc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 36a88fc99b0..f086dd47b91 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -916,7 +916,7 @@ proper position among the other output files. */
than in ASM_DEBUG_SPEC, so that it applies to both .s and .c etc.
compilations. */
# define ASM_DEBUG_DWARF_OPTION ""
-# elif defined(HAVE_AS_GDWARF_5_DEBUG_FLAG)
+# elif defined(HAVE_AS_GDWARF_5_DEBUG_FLAG) && !defined(HAVE_LD_BROKEN_PE_DWARF5)
# define ASM_DEBUG_DWARF_OPTION "%{%:dwarf-version-gt(4):--gdwarf-5;" \
"%:dwarf-version-gt(3):--gdwarf-4;" \
"%:dwarf-version-gt(2):--gdwarf-3;" \
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2021-07-09 10:14 [gcc r12-2189] Fix build failure on Windows with older binutils Eric Botcazou
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