kumquat-buildroot/package/libtorrent-rasterbar/Config.in
Max Filippov 306f507f9d toolchain: add variadic MI thunk support flag
GCC uses thunk functions to adjust the 'this' pointer when calling C++
member functions in classes derived with multiple inheritance.
Generation of thunk functions requires support from the compiler back
end. In the absence of that support target-independent code in the C++
front end is used to generate thunk functions, but it does not support
vararg functions.

Support for this feature is currently missing in or1k and xtensa
toolchains.

Add hidden option BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK that
indicates presence of this feature in the toolchain. Add dependency to
packages that require this feature to be built.

Fixes:
http://autobuild.buildroot.net/results/c9e660c764edbd7cf0ae54ab0f0f412464721446/
http://autobuild.buildroot.net/results/9a3bf4b411c418ea78d59e35d23ba865dd453890/

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-02-04 21:53:20 +01:00

24 lines
915 B
Plaintext

comment "libtorrent-rasterbar needs a toolchain w/ C++, threads, wchar, gcc >= 4.8"
depends on BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK
depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR || \
!BR2_HOST_GCC_AT_LEAST_4_8 || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
config BR2_PACKAGE_LIBTORRENT_RASTERBAR
bool "libtorrent-rasterbar"
depends on BR2_INSTALL_LIBSTDCPP # boost
depends on BR2_HOST_GCC_AT_LEAST_4_8
depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
depends on BR2_TOOLCHAIN_HAS_THREADS # boost
depends on BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK
depends on BR2_USE_WCHAR # boost
select BR2_PACKAGE_BOOST
select BR2_PACKAGE_BOOST_CHRONO
select BR2_PACKAGE_BOOST_SYSTEM
select BR2_PACKAGE_BOOST_RANDOM
select BR2_PACKAGE_OPENSSL
help
libtorrent is a feature complete C++ bittorrent implementation
focusing on efficiency and scalability.
https://www.libtorrent.org/