[Buildroot] [PATCH] package/busybox: Fallback to -g2 in if -g3 is enabled.

[Buildroot] [PATCH] package/busybox: Fallback to -g2 in if -g3 is enabled.

[Dmitry Chestnykh]

Linker process hangs if busybox was built with -g3,
so fallback to -g2 in this case.
The issue can be reproduced for example with
qemu_aarch64_virt_defconfig by selecting BR2_DEBUG_3.

Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>
---
 package/busybox/busybox.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/package/busybox/busybox.mk b/package/busybox/busybox.mk
index eb5e7ad922..e9a7fce554 100644
--- a/package/busybox/busybox.mk
+++ b/package/busybox/busybox.mk
@@ -18,6 +18,11 @@ BUSYBOX_IGNORE_CVES += CVE-2022-28391
 BUSYBOX_CFLAGS = \
 	$(TARGET_CFLAGS)
 
+# Linking hangs with -g3, fallback to -g2
+ifeq ($(BR2_DEBUG_3),y)
+       BUSYBOX_CFLAGS += -g2
+endif
+
 BUSYBOX_LDFLAGS = \
 	$(TARGET_LDFLAGS)
 
-- 
2.44.0

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Re: [Buildroot] [PATCH] package/busybox: Fallback to -g2 in if -g3 is enabled.

[Thomas Petazzoni via buildroot]

Hello Dmitry,

On Tue, 16 Apr 2024 22:27:36 +0300
Dmitry Chestnykh <dm.chestnykh@gmail.com> wrote:

> Linker process hangs if busybox was built with -g3,
> so fallback to -g2 in this case.
> The issue can be reproduced for example with
> qemu_aarch64_virt_defconfig by selecting BR2_DEBUG_3.
> 
> Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>

Thanks for your patch. However, this is more of a workaround than a
real fix, indeed the linker shouldn't hang at -g3.

Does this happen on all architectures? Does it happen regardless of the
compiler optimization level selected? Did you report the bug to
upstream binutils?

Thanks a lot,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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