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cmake: modules/FindGnuLd: cache variable GNULD_VERSION_STRING
This changes to cache variable GNULD_VERSION_STRING across cmake runs. This variable is used to determine whether -Wl,-no-pie is being passed to linker. However, if cmake is run multiple times without clearing the build directory, GNULD_VERSION_STRING was lost and the script falsely assumed the linker could not take this argument, and thus omitting it during linking. Depending on the host, it would warn on something like this: /usr/bin/ld.bfd: app/libapp.a(main.c.obj): warning: relocation in read-only section `.text._posix_zephyr_main' /usr/bin/ld.bfd: warning: creating DT_TEXTREL in a PIE To fix this, simply caches GNULD_VERSION_STRING so it can be used during subsequent cmake runs. Fixes #61725 Signed-off-by: Daniel Leung <[email protected]>
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