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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">I’m developing a shared object module for which I need to ensure there is not PLT section. Some background on why I have this requirement is available in this
<a href="https://stackoverflow.com/questions/66810305/how-to-reverse-r-x86-64-jump-slot-relocations">
Stack Overflow question</a>. In gcc, I can accomplish this with -fno-plt. Clang appears to have
<a href="https://reviews.llvm.org/D39079">added support for this option in 2017</a>. However, setting this flag when compiling my module with Clang has no effect, and the module ends up still having a PLT. I’m using CMake as my build system and I added the
-fno-plt flag at the top level of my project via add_compile_options(-fno-plt). When building, I can see that the flag gets applied to each compiled source file. I also tried adding it explicitly to the linker options (target_link_options in CMake) and again
I can see that it is applied at link time, but it still has no effect. I’ve tried with both Clang 10 and 11.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It’s possible I’m doing something wrong, but the flag works as expected with gcc, using the same compilation process, so right now my assumption is that this is a bug.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Mitch Lindgren<o:p></o:p></p>
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