treewide: make added libs optional #42411
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Some linker configurtions have issues when you give it a library that it’s not expecting. This seems to happen most often in cross compilation for some reason. We now add a global option to disable this behavior: $dontAddLibs When set to non-empty, this will prevent Nix setup hooks from adding "compatibility" libraries. Because certain libc’s will not need these compatiblity libraries, we have two other variables that control adding libintl & libiconv. $dontAddLibiconv $dontAddLibintl These will be set when compiling with Glibc & Musl which already have their own version bundled. You can also set them manually in your derivation to disable the behavior.
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GrahamcOfBorg
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Some linker configurtions have issues when you give it a library that
it’s not expecting. This seems to happen most often in cross
compilation for some reason. We now add a global option to disable
this behavior:
When set to non-empty, this will prevent Nix setup hooks from adding
"compatibility" libraries. Because certain libc’s will not need these
compatiblity libraries, we have two other variables that control
adding libintl & libiconv.
These will be set when compiling with Glibc & Musl which already have
their own version bundled. You can also set them manually in your
derivation to disable the behavior.
Motivation for this change
This was created in response to issues I had with libiconv & the Android NDK in #42333.