Gunnar Beutner 73b9cfac1b LibELF: Support weak symbols when using BIND_NOW ...

When using BIND_NOW (e.g. via -Wl,-z,now) we would fail to load ELF
images while doing relocations when we encounter a weak symbol. Instead
we should just patch the PLT entry with a null pointer.

This can be reproduced with:

$ cat test.cpp
int main()
{
    std::cout << "Hello World!" << std::endl;
}
$ g++ -o test -Wl,-z,now test.cpp
$ ./test
did not find symbol while doing relocations for library test: _ITM_RU1

2021-05-31 11:49:32 +01:00

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