build: Remove negated --enable-fuzz checks from build system

configure.ac

@@ -1303,6 +1303,7 @@ if test "$enable_fuzz" = "yes"; then
   bitcoin_enable_qt_test=no
   bitcoin_enable_qt_dbus=no
   use_bench=no
+  use_tests=no
   use_external_signer=no
   use_upnp=no
   use_natpmp=no
@@ -1559,7 +1560,7 @@ fi
 dnl libevent check
 
 use_libevent=no
-if test "$build_bitcoin_cli$build_bitcoind$bitcoin_enable_qt$use_tests$use_bench" != "nonononono"; then
+if test "$build_bitcoin_cli$build_bitcoind$bitcoin_enable_qt$enable_fuzz_binary$use_tests$use_bench" != "nononononono"; then
   PKG_CHECK_MODULES([EVENT], [libevent >= 2.1.8], [use_libevent=yes], [AC_MSG_ERROR([libevent version 2.1.8 or greater not found.])])
   if test "$TARGET_OS" != "windows"; then
     PKG_CHECK_MODULES([EVENT_PTHREADS], [libevent_pthreads >= 2.1.8], [], [AC_MSG_ERROR([libevent_pthreads version 2.1.8 or greater not found.])])
@@ -1846,8 +1847,8 @@ else
   AC_MSG_RESULT([no])
 fi
 
-if test "$build_bitcoin_wallet$build_bitcoin_cli$build_bitcoin_tx$build_bitcoin_libs$build_bitcoind$bitcoin_enable_qt$use_bench$use_tests" = "nononononononono"; then
-  AC_MSG_ERROR([No targets! Please specify at least one of: --with-utils --with-libs --with-daemon --with-gui --enable-bench or --enable-tests])
+if test "$build_bitcoin_wallet$build_bitcoin_cli$build_bitcoin_tx$build_bitcoin_libs$build_bitcoind$bitcoin_enable_qt$enable_fuzz_binary$use_bench$use_tests" = "nonononononononono"; then
+  AC_MSG_ERROR([No targets! Please specify at least one of: --with-utils --with-libs --with-daemon --with-gui --enable-fuzz(-binary) --enable-bench or --enable-tests])
 fi
 
 AM_CONDITIONAL([TARGET_DARWIN], [test "$TARGET_OS" = "darwin"])

src/Makefile.am

@@ -1053,9 +1053,7 @@ include Makefile.leveldb.include
 include Makefile.test_util.include
 include Makefile.test_fuzz.include
 
-if ENABLE_TESTS
 include Makefile.test.include
-endif
 
 if ENABLE_BENCH
 include Makefile.bench.include

src/Makefile.test.include

@@ -6,7 +6,7 @@ if ENABLE_FUZZ_BINARY
 noinst_PROGRAMS += test/fuzz/fuzz
 endif
 
-if !ENABLE_FUZZ
+if ENABLE_TESTS
 bin_PROGRAMS += test/test_bitcoin
 endif
 
@@ -371,7 +371,7 @@ endif
 endif
 	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C secp256k1 check
 
-if !ENABLE_FUZZ
+if ENABLE_TESTS
 UNIVALUE_TESTS = univalue/test/object univalue/test/unitester univalue/test/no_nul
 noinst_PROGRAMS += $(UNIVALUE_TESTS)
 TESTS += $(UNIVALUE_TESTS)