Re: [Buildroot] [PATCH v4] package/heaptrack: new package

[Julien Olivain via buildroot <buildroot@buildroot.org>]

Hi Luca,

Thanks for the update.

On 21/08/2026 21:51, Luca Ceresoli via buildroot wrote:
> Add heaptrack, a memory allocation tracer toolkit.
> 
> This implementation builds all the command line components, not the
> heaptrack_gui graphical visualization program.
> 
> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
> ---
[...]
> diff --git a/package/heaptrack/Config.in b/package/heaptrack/Config.in
> new file mode 100644
> index 000000000000..808193a73f68
> --- /dev/null
> +++ b/package/heaptrack/Config.in
> @@ -0,0 +1,39 @@
> +config BR2_PACKAGE_HEAPTRACK
> +	bool "heaptrack"
> +	depends on BR2_INSTALL_LIBSTDCPP
> +	depends on BR2_TOOLCHAIN_HAS_THREADS # boost, libunwind, elfutils
> +	depends on BR2_USE_WCHAR # boost, elfutils
> +	depends on BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS # 
> boost-filesystem
> +	depends on BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS # libunwind
> +	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # libunwind

There is one last build failure with test-pkg:
https://gitlab.com/jolivain/buildroot/-/jobs/16041509274

It seems that heaptrack is using std::filesystem:
https://invent.kde.org/sdk/heaptrack/-/blob/master/src/interpret/heaptrack_interpret.cpp?ref_type=heads#L15

which is a C++17 feature which was fully implemented in gcc 8.1:
https://gcc.gnu.org/gcc-8/changes.html#libstdcxx

So I believe this gcc version should be raised at gcc >= 8.

	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_8 # C++17 filesystem

The comment should also be updated below.

> +	depends on !BR2_STATIC_LIBS # libunwind, elfutils
> +	depends on !BR2_TOOLCHAIN_USES_UCLIBC # no dlmopen() support
> +	select BR2_PACKAGE_BOOST
> +	select BR2_PACKAGE_BOOST_IOSTREAMS
> +	select BR2_PACKAGE_BOOST_PROGRAM_OPTIONS
> +	# For heaptrack_print
> +	select BR2_PACKAGE_BOOST_FILESYSTEM
> +	select BR2_PACKAGE_ELFUTILS
> +	select BR2_PACKAGE_LIBUNWIND
> +	select BR2_PACKAGE_ZLIB
> +	help
> +	  Heaptrack traces all memory allocations and annotates these
> +	  events with stack traces. Dedicated analysis tools then allow
> +	  you to interpret the heap memory profile to find hotspots,
> +	  memory leaks, allocation hotspots and temporary allocations.
> +
> +	  Zstandard offers better (de)compression performance compared
> +	  with gzip/zlib, making heaptrack faster and datafiles smaller,
> +	  so enabling BR2_PACKAGE_ZSTD is recommended.
> +
> +	  https://apps.kde.org/heaptrack/
> +
> +comment "heaptrack needs a glibc or musl toolchain w/ C++, threads, 
> wchar, gcc >= 4.9, dynamic library"

"needs gcc >= 8"

> +	depends on BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
> +	depends on BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS
> +	depends on !BR2_INSTALL_LIBSTDCPP \
> +		|| !BR2_TOOLCHAIN_HAS_THREADS \
> +		|| !BR2_USE_WCHAR \
> +		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 \

		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_8 \

> +		|| BR2_STATIC_LIBS \
> +		|| BR2_TOOLCHAIN_USES_UCLIBC
[...]

Could you send an updated patch please?

Best regards,

Julien.
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