Dmitry Safonov c9fdd355f6 pie: Mark __export_*() functions as externally_visible ... GCC's lto source: > To avoid this problem the compiler must assume that it sees the > whole program when doing link-time optimization. Strictly > speaking, the whole program is rarely visible even at link-time. > Standard system libraries are usually linked dynamically or not > provided with the link-time information. In GCC, the whole > program option (@option{-fwhole-program}) asserts that every > function and variable defined in the current compilation > unit is static, except for function @code{main} (note: at > link time, the current unit is the union of all objects compiled > with LTO). Since some functions and variables need to > be referenced externally, for example by another DSO or from an > assembler file, GCC also provides the function and variable > attribute @code{externally_visible} which can be used to disable > the effect of @option{-fwhole-program} on a specific symbol. As far as I read gcc's source, ipa_comdats() will avoid placing symbols that are either already in a user-defined section or have externally_visible attribute into new optimized gcc sections. Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Andrei Vagin <avagin@gmail.com>		2023-10-22 13:29:25 -07:00
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common	pie: Mark __export_*() functions as externally_visible	2023-10-22 13:29:25 -07:00
apparmor.h	check: add a feature test for apparmor_stacking	2021-09-03 10:31:00 -07:00