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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> |
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| .. | ||
| toolchain | ||
| toolchain-buildroot | ||
| toolchain-external | ||
| Config.in | ||
| helpers.mk | ||
| toolchain-wrapper.c | ||
| toolchain-wrapper.mk | ||
| toolchain.mk | ||