On some Linux kernel versions, the bpf compiler invoked in the functional tests will issue a -Wduplicate-decl-specifier warning.
This seems harmless and should be fixed upstream in the Linux kernel.
Here, simply suppress it for now. Fixes https://github.com/bitcoin/bitcoin/issues/32322
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For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/32336.
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This is required for the next commit.
-BEGIN VERIFY SCRIPT-
ren() { sed --regexp-extended -i "s/$1/$2/g" $( git grep --extended-regexp -l "$1" ) ; }
ren 'cflags=\["-Wno-error=implicit-function-declaration"\]' 'cflags=bpf_cflags()'
-END VERIFY SCRIPT-
Code review ACK facb9b327b9da39ce1e09ed56199be9efb19b5b8
ACK facb9b327b9da39ce1e09ed56199be9efb19b5b8, I have reviewed the code and it looks OK.
Post merge ACK
