[Buildroot] [git commit branch/2022.08.x] package/sox: work around gcc bug 68485

[Peter Korsgaard <peter@korsgaard.com>]

commit: https://git.buildroot.net/buildroot/commit/?id=5913c02656220b6c79207f03ebc7e7c50a8f073d
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2022.08.x

sox is impacted by the microblaze-specific gcc bug #68485 [0], which is
still unfixed as of gcc 12.x.

As for all other impacted packages, force no optimisation when using a
toolchain riddled with that bug.

Fixes:
   http://autobuild.buildroot.net/results/ac4/ac4fbd55529ac7b4e635a11766f842cd25a833a1/

[0] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit dd8a8cfa9a584934bb2707c197c43073d6c03436)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 package/sox/sox.mk | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/package/sox/sox.mk b/package/sox/sox.mk
index 1896437ad4..d0329bf50d 100644
--- a/package/sox/sox.mk
+++ b/package/sox/sox.mk
@@ -26,6 +26,14 @@ SOX_CONF_OPTS = \
 	--with-distro="Buildroot" \
 	--disable-stack-protector
 
+SOX_CFLAGS = $(TARGET_CFLAGS)
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_68485),y)
+SOX_CFLAGS += -O0
+endif
+
+SOX_CONF_ENV += CFLAGS="$(SOX_CFLAGS)"
+
 ifeq ($(BR2_PACKAGE_ALSA_LIB_PCM),y)
 SOX_DEPENDENCIES += alsa-lib
 SOX_CONF_OPTS += --enable-alsa
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