From: Joerg Roedel <jroedel@xxxxxxx>
Building a kernel for the CSKY architecture with CONFIG_FRAME_POINTER
set requires a gcc supporting the non-upstream '-mbacktrace' option.
Check for the '-mbacktrace' option before enabling CONFIG_FRAMEPOINTER
and fix building CSKY with an upstream gcc compiler.
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
---
arch/csky/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index bd31ab12f77d..1622e1c56026 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -8,7 +8,7 @@ config CSKY
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2
- select ARCH_WANT_FRAME_POINTERS if !CPU_CK610
+ select ARCH_WANT_FRAME_POINTERS if (!CPU_CK610 && STACKTRACE_SUPPORT)
select COMMON_CLK
select CLKSRC_MMIO
select CSKY_MPINTC if CPU_CK860
@@ -125,7 +125,7 @@ config MMU
def_bool y
config STACKTRACE_SUPPORT
- def_bool y
+ def_bool $(success,echo 'int foo(void) { return 0; }' | $(CC) -mbacktrace -x c - -c -o /dev/null)
config TIME_LOW_RES
def_bool y
--
2.27.0
