* [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet
@ 2021-08-17 21:31 Giulio Benetti
2021-08-17 21:31 ` [Buildroot] [PATCH 1/2] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_101952 Giulio Benetti
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Giulio Benetti @ 2021-08-17 21:31 UTC (permalink / raw)
To: buildroot
Cc: Giulio Benetti, Romain Naour, Thomas De Schampheleire, Thomas Petazzoni
This patchset introduce gcc bug 101952 and reference to it in bullet to
work it around by disabling optimization(-O0).
NOTE: this patchset must be applied *after* this patchset:
https://patchwork.ozlabs.org/project/buildroot/list/?series=258074
Giulio Benetti (2):
toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_101952
package/bullet: fix build failure due to gcc bug 101952
package/bullet/bullet.mk | 2 +-
toolchain/Config.in | 7 +++++++
2 files changed, 8 insertions(+), 1 deletion(-)
--
2.25.1
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [Buildroot] [PATCH 1/2] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_101952
2021-08-17 21:31 [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet Giulio Benetti
@ 2021-08-17 21:31 ` Giulio Benetti
2021-08-17 21:31 ` [Buildroot] [PATCH 2/2] package/bullet: fix build failure due to gcc bug 101952 Giulio Benetti
2021-08-19 20:42 ` [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet Thomas Petazzoni
2 siblings, 0 replies; 4+ messages in thread
From: Giulio Benetti @ 2021-08-17 21:31 UTC (permalink / raw)
To: buildroot
Cc: Giulio Benetti, Romain Naour, Thomas De Schampheleire, Thomas Petazzoni
bullet package fails to build for the SH4 architecture with optimization
enabled with gcc = 11.1.0:
http://autobuild.buildroot.net/results/32b/32bfaf0aae57ed18c18e82a72a958af9b3e1b241/
It's been reported upstream:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
---
toolchain/Config.in | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/toolchain/Config.in b/toolchain/Config.in
index c3edf8f48d..d9a49e87e6 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -191,6 +191,13 @@ config BR2_TOOLCHAIN_HAS_GCC_BUG_101916
bool
default y if BR2_sh4
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952
+# ICE: on SH4: unaligned opcodes detected in executable segment.
+# This bug still exists in gcc = 11.1.0
+config BR2_TOOLCHAIN_HAS_GCC_BUG_101952
+ bool
+ default y if BR2_sh4
+
config BR2_TOOLCHAIN_HAS_NATIVE_RPC
bool
--
2.25.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread
* [Buildroot] [PATCH 2/2] package/bullet: fix build failure due to gcc bug 101952
2021-08-17 21:31 [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet Giulio Benetti
2021-08-17 21:31 ` [Buildroot] [PATCH 1/2] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_101952 Giulio Benetti
@ 2021-08-17 21:31 ` Giulio Benetti
2021-08-19 20:42 ` [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet Thomas Petazzoni
2 siblings, 0 replies; 4+ messages in thread
From: Giulio Benetti @ 2021-08-17 21:31 UTC (permalink / raw)
To: buildroot
Cc: Giulio Benetti, Romain Naour, Thomas De Schampheleire, Thomas Petazzoni
The bullet package exhibits gcc bug 101952 when built for the SH4
architecture with optimization enabled, which causes a build failure.
As done for other packages in Buildroot work around this gcc bug by
setting optimization to -O0 if BR2_TOOLCHAIN_HAS_GCC_BUG_101952=y like we
already do for BR2_TOOLCHAIN_HAS_GCC_BUG_85180=y.
Fixes:
http://autobuild.buildroot.net/results/32b/32bfaf0aae57ed18c18e82a72a958af9b3e1b241/
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
---
package/bullet/bullet.mk | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/package/bullet/bullet.mk b/package/bullet/bullet.mk
index 01931b58a8..cc72be7c60 100644
--- a/package/bullet/bullet.mk
+++ b/package/bullet/bullet.mk
@@ -24,7 +24,7 @@ endif
BULLET_CXXFLAGS = $(TARGET_CXXFLAGS)
-ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
+ifneq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180)$(BR2_TOOLCHAIN_HAS_GCC_BUG_101952),)
BULLET_CXXFLAGS += -O0
endif
--
2.25.1
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* Re: [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet
2021-08-17 21:31 [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet Giulio Benetti
2021-08-17 21:31 ` [Buildroot] [PATCH 1/2] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_101952 Giulio Benetti
2021-08-17 21:31 ` [Buildroot] [PATCH 2/2] package/bullet: fix build failure due to gcc bug 101952 Giulio Benetti
@ 2021-08-19 20:42 ` Thomas Petazzoni
2 siblings, 0 replies; 4+ messages in thread
From: Thomas Petazzoni @ 2021-08-19 20:42 UTC (permalink / raw)
To: Giulio Benetti; +Cc: Romain Naour, Thomas De Schampheleire, buildroot
On Tue, 17 Aug 2021 23:31:10 +0200
Giulio Benetti <giulio.benetti@benettiengineering.com> wrote:
> Giulio Benetti (2):
> toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_101952
> package/bullet: fix build failure due to gcc bug 101952
Both applied. Thanks!
Thomas
--
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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2021-08-17 21:31 [Buildroot] [PATCH 0/2] Introduce and work-around bug 101952 on bullet Giulio Benetti
2021-08-17 21:31 ` [Buildroot] [PATCH 1/2] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_101952 Giulio Benetti
2021-08-17 21:31 ` [Buildroot] [PATCH 2/2] package/bullet: fix build failure due to gcc bug 101952 Giulio Benetti
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