anchao commented on code in PR #11140:
URL: https://github.com/apache/nuttx/pull/11140#discussion_r1390424666


##########
include/nuttx/spinlock.h:
##########
@@ -32,12 +32,12 @@
 
 #include <nuttx/irq.h>
 
-#ifdef CONFIG_RW_SPINLOCK
-#include <stdatomic.h>
+#if defined(CONFIG_RW_SPINLOCK) && !defined(__cplusplus)

Review Comment:
   What GCC version are you using?



##########
include/nuttx/spinlock.h:
##########
@@ -32,12 +32,12 @@
 
 #include <nuttx/irq.h>
 
-#ifdef CONFIG_RW_SPINLOCK
-#include <stdatomic.h>
+#if defined(CONFIG_RW_SPINLOCK) && !defined(__cplusplus)

Review Comment:
   ```
   $ arm-none-eabi-gcc -v
   Using built-in specs.
   COLLECT_GCC=arm-none-eabi-gcc
   
COLLECT_LTO_WRAPPER=/home/archer/code/k03/k1/prebuilts/gcc/linux/arm/bin/../libexec/gcc/arm-none-eabi/11.3.1/lto-wrapper
   Target: arm-none-eabi
   Configured with: 
/data/jenkins/workspace/GNU-toolchain/arm-11/src/gcc/configure 
--target=arm-none-eabi 
--prefix=/data/jenkins/workspace/GNU-toolchain/arm-11/build-arm-none-eabi/install
 
--with-gmp=/data/jenkins/workspace/GNU-toolchain/arm-11/build-arm-none-eabi/host-tools
 
--with-mpfr=/data/jenkins/workspace/GNU-toolchain/arm-11/build-arm-none-eabi/host-tools
 
--with-mpc=/data/jenkins/workspace/GNU-toolchain/arm-11/build-arm-none-eabi/host-tools
 
--with-isl=/data/jenkins/workspace/GNU-toolchain/arm-11/build-arm-none-eabi/host-tools
 --disable-shared --disable-nls --disable-threads --disable-tls 
--enable-checking=release --enable-languages=c,c++,fortran --with-newlib 
--with-gnu-as --with-gnu-ld 
--with-sysroot=/data/jenkins/workspace/GNU-toolchain/arm-11/build-arm-none-eabi/install/arm-none-eabi
 --with-multilib-list=aprofile,rmprofile --with-pkgversion='Arm GNU Toolchain 
11.3.Rel1' --with-bugurl=https://bugs.linaro.org/
   Thread model: single
   Supported LTO compression algorithms: zlib
   gcc version 11.3.1 20220712 (Arm GNU Toolchain 11.3.Rel1) 
   
   ```



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