Merge #1276: autotools: Don't regenerate Wycheproof header automatically

06c67de autotools: Don't regenerate Wycheproof header automatically (Tim Ruffing)

Pull request description:

  This is a hot fix for bitcoin/bitcoin#27445 .

  ---

  Pregenerated files that we distribute should not have dependencies in Makefile.am. For rationale, see the comments about the precomputed table files.

  See also bitcoin/bitcoin#27445 (comment) .

ACKs for top commit:
  hebasto:
    ACK 06c67de
  RandomLattice:
    ACK 06c67de

Tree-SHA512: fa7f44eaa1c7e42ecba5829ac1b8ae8b5826d1a1551e01c3caf37af780bd5c102c8f54e88520723937f7016d93c67b62a334c7a28b96c4f422a38fcf8e6a1984

Makefile.am

@@ -255,8 +255,8 @@ EXTRA_DIST += tools/tests_wycheproof_generate.py
 
 TESTVECTORS = src/wycheproof/ecdsa_secp256k1_sha256_bitcoin_test.h
 
-src/wycheproof/ecdsa_secp256k1_sha256_bitcoin_test.h: src/wycheproof/ecdsa_secp256k1_sha256_bitcoin_test.json
-	python3 tools/tests_wycheproof_generate.py $< > $@
+src/wycheproof/ecdsa_secp256k1_sha256_bitcoin_test.h:
+	python3 tools/tests_wycheproof_generate.py src/wycheproof/ecdsa_secp256k1_sha256_bitcoin_test.json > $@
 
 testvectors: $(TESTVECTORS)