Add -Bsymbolic link option to avoid symbol interposition #432
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You can also see https://github.com/BewareMyPower/symbol-interposition for the symbol interposition issue. |
merlimat
approved these changes
Jul 3, 2024
shibd
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Jul 3, 2024
Demogorgon314
approved these changes
Jul 3, 2024
BewareMyPower
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Jul 4, 2024
### Motivation There is a case that `libpulsar.so` could unexpectedly call functions from other dependencies. For example, assuming the application depends on two libraries: - `libpulsar.so`, which includes the symbols from `libcurl.a` 8.4.0 - `libfoo.so`, which includes the symbols from `libcurl.a` 7.82.0 If the link order is `libfoo.so` first, then the libcurl definitions from 7.82.0 will also be used by `libpulsar.so` and then the application might crash due to the incompatibility. This is an issue specifically with Linux ELF format. ### Modifications Add the `-Wl,-Bsymbolic` link option for GCC. (cherry picked from commit d736a1b)
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Motivation
There is a case that
libpulsar.socould unexpectedly call functions from other dependencies.For example, assuming the application depends on two libraries:
libpulsar.so, which includes the symbols fromlibcurl.a8.4.0libfoo.so, which includes the symbols fromlibcurl.a7.82.0If the link order is
libfoo.sofirst, then the libcurl definitions from 7.82.0 will also be used bylibpulsar.soand then the application might crash due to the incompatibility. This is an issue specifically with Linux ELF format.Modifications
Add the
-Wl,-Bsymboliclink option for GCC.