This change fixes NuttX’s CMake support when NuttX is embedded
in another project via add_subdirectory(). CMake’s CMAKE_SOURCE_DIR
and CMAKE_BINARY_DIR refer to the outermost project, causing NuttX
to access its .config, generated files, host tools, and build artifacts
in the parent project’s directories. The fix introduces NUTTX_DIR and
NUTTX_BINARY_DIR, based on CMAKE_CURRENT_SOURCE_DIR and
CMAKE_CURRENT_BINARY_DIR, and consistently uses them for NuttX
self-references while preserving existing standalone builds. It fixes
the Kconfig initialization failure reported in #19697 and allows an
embedded sim:nsh build to configure, build, and boot successfully.
The change affects only the CMake build system (not Make or Kconfig
defaults), requires the corresponding nuttx-apps change, and does not
extend add_subdirectory() support to cross-compiled non-sim boards due
to CMake’s toolchain-file limitation.
Fixes#19697.
Assisted-by: Claude:claude-sonnet-5
Signed-off-by: Alan Carvalho de Assis <acassis@gmail.com>
fix SIM start crash on Ubuntu22,
becase the previous CMake linker script has missing handling of
C++ global constructor sections in the new Glibc version on ubuntu22
it will cause a prior c++ constructor call error:
0x00000000400317f6 in nxsched_get_stackinfo (pid=0, stackinfo=0x7fffffffdbc0) at /media/liujinye/ssd/vela-dev/nuttx/sched/sched/sched_get_stackinfo.c:101
0x000000004002de0d in tls_get_info () at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/tls/tls_getinfo.c:61
0x000000004002ddc8 in task_get_info () at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/tls/task_getinfo.c:50
0x000000004002c74e in atexit_register (type=4, func=0x40044eac <CHelloWorld::~CHelloWorld()>, arg=0x40061418 <g_HelloWorld>, dso=0x40060000)
at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/stdlib/lib_atexit.c:68
0x000000004002ca34 in __cxa_atexit (func=0x40044eac <CHelloWorld::~CHelloWorld()>, arg=0x40061418 <g_HelloWorld>, dso_handle=0x40060000)
at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/stdlib/lib_atexit.c:268
0x000000004004502b in __static_initialization_and_destruction_0 () at /media/liujinye/ssd/vela-dev/apps/examples/helloxx/helloxx_main.cxx:93
0x000000004004503e in _GLOBAL__sub_I_helloxx_main () at /media/liujinye/ssd/vela-dev/apps/examples/helloxx/helloxx_main.cxx:129
0x00007ffff7829ebb in call_init (env=<optimized out>, argv=0x7fffffffdd18, argc=1) at ../csu/libc-start.c:145
__libc_start_main_impl (main=0x40004dc8 <main>, argc=1, argv=0x7fffffffdd18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7fffffffdd08) at ../csu/libc-start.c:379
0x0000000040004285 in _start ()
Signed-off-by: xuxin19 <xuxin19@xiaomi.com>
