build system: add --no-warn-rwx-segments to linker
#20381
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Before we disabled the warning about RWX segments only for picolibc, but this issue is popping up on more and more toolchains (looking at MSP430 and RISC-V). Other than on `native`/`native64`, there is no MMU to enforce whatever permissions the segments contain anyway. (And writing to ROM with regular store instructions will not be possible even without the need for an MMU.) So let's just globally disable this warning, unless building for `native` and `native64`.
benpicco
added
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CI: ready for build
Teufelchen1
approved these changes
Mar 12, 2024
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Thx :) |
maribu
changed the title
--no-warn-rwx-segments to linker--no-warn-rwx-segments to linker
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Contribution description
Before we disabled the warning about RWX segments only for picolibc, but this issue is popping up on more and more toolchains (looking at MSP430 and RISC-V). Other than on
native/native64, there is no MMU to enforce whatever permissions the segments contain anyway. (And writing to ROM with regular store instructions will not be possible even without the need for an MMU.)So let's just globally disable this warning, unless building for
nativeandnative64.Testing procedure
Building in
masterwith RIOT-OS/riotdocker#248 will issue the RWX warning for every app now. And so does building on Alpine for MSP430.With this PR the in our context not helpful warning is disabled.
Issues/PRs references
Not necessary, but useful for RIOT-OS/riotdocker#248