On master (d1e42659bbdd8da170542d8c638242cd94f71a7d):
$ ./autogen.sh && ./configure --without-gui --disable-wallet && make clean
$ make 2>&1 | grep LD | grep -v .la
CXXLD bitcoind
CXXLD bitcoin-cli
CXXLD bitcoin-tx
CXXLD bitcoin-util
CXXLD test/test_bitcoin
CXXLD bench/bench_bitcoin
CXXLD minisketch/test
CXXLD test/fuzz/fuzz
CXXLD univalue/test/object
CXXLD univalue/test/unitester
$ make check 2>&1 | grep LD
CCLD exhaustive_tests
CCLD tests
With this PR:
$ ./autogen.sh && ./configure --without-gui --disable-wallet && make clean
$ make 2>&1 | grep LD | grep -v .la
CXXLD bitcoind
CXXLD bitcoin-cli
CXXLD bitcoin-tx
CXXLD bitcoin-util
CXXLD test/test_bitcoin
CXXLD bench/bench_bitcoin
CXXLD test/fuzz/fuzz
CXXLD univalue/test/object
CXXLD univalue/test/unitester
$ make check 2>&1 | grep LD
CXXLD minisketch/test
CCLD exhaustive_tests
CCLD tests
In fact, this PR restores behavior that was before bitcoin/bitcoin#22646, and that behavior looks more optimal.
As an outcome, the contrib/guix/libexec/build.sh does not spend resources to build binaries which are not a part of the release package.