xiaoxiang781216 commented on code in PR #20048:
URL: https://github.com/apache/nuttx/pull/20048#discussion_r3917772141
##########
CMakeLists.txt:
##########
@@ -516,6 +516,14 @@ if(EXISTS
${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/cmake/elf.cmake)
include(${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/cmake/elf.cmake)
endif()
+# The default registers each static object's destructor with __cxa_atexit(dtor,
+# obj, &__dso_handle), and __dso_handle comes from crtbegin, which a module
does
+# not link. Turning it off also puts the destructors in .fini_array, which is
+# where the loader looks for them when the module is unloaded. The option is
+# for C++ alone, so the generator expression keeps it off the C compiles.
+
+nuttx_elf_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-use-cxa-atexit>)
Review Comment:
should we move to toolchain specific cmake file
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