When i use cmake to build sim:libcxxtest, it display undefined reference to `NXpthread_setspecific'

[shikoumuzi]

when i use cmake -B build -DBOARD_CONFIG=sim:libcxxtest
it can not compile

but when i use make to build sim libcxxtest, it is running properly
what can i do to solve this problem， thanks

[raiden00pl]

you have to set CONFIG_TLS_NELEM > 0 . It's strange that this problem doesn't occur for make.

[shikoumuzi]

you have to set CONFIG_TLS_NELEM > 0 . It's strange that this problem doesn't occur for make.

thank you for your reply，That's a good way for me to solve the problem

I found that whatever macro definition "in thread.h" encapsulates a layer of "pthread_key_", "tss_key" and other TLS-related functions. It's strange why make can exclude these functions, but cmake can't

[xiaoxiang781216]

@xuxin930 could you check why cmake is different from make?

[xuxin930]

@xuxin930 could you check why cmake is different from make?

sure, I'm working on it

[xuxin930]

hi @raiden00pl @xiaoxiang781216
my guess is that the redefined symbols for sim in cmake do not have an if block.
let me fix it

nuttx/arch/sim/src/nuttx-names.in

Lines 99 to 112 in 62a4799

	NXSYMBOLS(pthread_create)
	#if defined(CONFIG_TLS_NELEM) && CONFIG_TLS_NELEM > 0
	NXSYMBOLS(pthread_getspecific)
	NXSYMBOLS(pthread_key_create)
	#endif
	NXSYMBOLS(pthread_kill)
	NXSYMBOLS(pthread_mutex_destroy)
	NXSYMBOLS(pthread_mutex_init)
	NXSYMBOLS(pthread_mutex_lock)
	NXSYMBOLS(pthread_mutex_unlock)
	#if defined(CONFIG_TLS_NELEM) && CONFIG_TLS_NELEM > 0
	NXSYMBOLS(pthread_setspecific)
	#endif
	NXSYMBOLS(pthread_sigmask)

nuttx/cmake/nuttx_redefine_symbols.cmake

Lines 78 to 94 in 62a4799

	pthread_attr_init
	pthread_attr_setstack
	pthread_attr_destroy
	pthread_cond_destroy
	pthread_cond_init
	pthread_cond_signal
	pthread_cond_wait
	pthread_create
	pthread_getspecific
	pthread_key_create
	pthread_kill
	pthread_mutex_destroy
	pthread_mutex_init
	pthread_mutex_lock
	pthread_mutex_unlock
	pthread_setspecific
	pthread_sigmask

[raiden00pl]

@xuxin930 good find.

Another problem I have with this configuration (and with libcxx in general) is a lot of warnings during compilation.
It looks like compiler flags from here doesn't work:

nuttx/libs/libxx/libcxx.cmake

Lines 99 to 124 in 62a4799

	if(GCCVER EQUAL 12)
	set_source_files_properties(libcxx/src/filesystem/operations.cpp
	PROPERTIES COMPILE_FLAGS -Wno-maybe-uninitialized)
	set_source_files_properties(libcxx/src/locale.cpp
	PROPERTIES COMPILE_FLAGS -Wno-maybe-uninitialized)
	set_source_files_properties(
	libcxx/src/string.cpp PROPERTIES COMPILE_FLAGS -Wno-alloc-size-larger-than)
	set_source_files_properties(libcxx/src/charconv.cpp
	PROPERTIES COMPILE_FLAGS -Wno-attributes)
	set_source_files_properties(libcxx/src/locale.cpp PROPERTIES COMPILE_FLAGS
	-Wno-attributes)
	endif()
	if(GCCVER GREATER_EQUAL 12)
	set_source_files_properties(
	libcxx/src/string.cpp PROPERTIES COMPILE_FLAGS -Wno-deprecated-declarations)
	set_source_files_properties(libcxx/src/filesystem/path.cpp
	PROPERTIES COMPILE_FLAGS -Wno-shadow)
	set_source_files_properties(libcxx/src/ryu/d2s.cpp
	PROPERTIES COMPILE_FLAGS -Wno-maybe-uninitialized)
	endif()
	if(GCCVER GREATER_EQUAL 13)
	set_source_files_properties(
	libcxx/src/string.cpp PROPERTIES COMPILE_FLAGS -Wno-alloc-size-larger-than)
	endif()

I haven't had a chance to look for the cause of this problem yet. I'm not sure if this problem only occurs for me on arch linux

[xuxin930]

I haven't had a chance to look for the cause of this problem yet. I'm not sure if this problem only occurs for me on arch linux

Okay, let me check the toolchain file settings and compile otpions settings again.

[xuxin930]

I haven't had a chance to look for the cause of this problem yet. I'm not sure if this problem only occurs for me on arch linux

hi @raiden00pl
there are two errors:

1. the toolchain file is not synchronized and is lagging behind. I will update it first.
2. CMake set_source_files_properties does not perform append, but replaces. 😔

regarding the second one, I have implemented nuttx_set_source_files_properties instead of set_source_files_properties and will submit a batch of bugfixes tomorrow.

[raiden00pl]

@xuxin930 great ! thanks for solving the issues