Merge #16338: test: Disable other targets when enable-fuzz is set

84edfc72e5eba3dde824ebd0626e97929a0b1bca Update doc and CI config (qmma)
48bcb2ac249e0e666ce638bb29124558b3283c16 Disable other targets when enable-fuzz is set (qmma)

Pull request description:

  This is to fix https://github.com/bitcoin/bitcoin/issues/16094

  When the `enable-fuzz` flag is set, disable all other binary targets.

ACKs for top commit:
  MarcoFalke:
    ACK 84edfc72e5eba3dde824ebd0626e97929a0b1bca (only checked that travis compiled this)

Tree-SHA512: f4ac80526388a67709986b22de88b00bf93ab44ae31a20bd4d8923a4982ab97e015a9f13010081d6ecf6c23ae8afeac7ca9d849d198ce6ebe239aa3127151efc

.travis.yml

@@ -297,7 +297,7 @@ after_success:
         RUN_FUNCTIONAL_TESTS=false
         RUN_FUZZ_TESTS=true
         GOAL="install"
-        BITCOIN_CONFIG="--disable-wallet --disable-bench --with-utils=no --with-daemon=no --with-libs=no --with-gui=no --enable-fuzz --with-sanitizers=fuzzer,address CC=clang CXX=clang++"
+        BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer,address CC=clang CXX=clang++"
 
     - stage: test
       env: >-

configure.ac

@@ -145,7 +145,8 @@ AC_ARG_ENABLE([extended-functional-tests],
     [use_extended_functional_tests=no])
 
 AC_ARG_ENABLE([fuzz],
-    AS_HELP_STRING([--enable-fuzz],[enable building of fuzz targets (default no)]),
+    AS_HELP_STRING([--enable-fuzz],
+    [enable building of fuzz targets (default no). enabling this will disable all other targets]),
     [enable_fuzz=$enableval],
     [enable_fuzz=no])
 
@@ -1118,6 +1119,37 @@ dnl it would break GCC's #include_next.
 AC_DEFUN([SUPPRESS_WARNINGS],
          [$(echo $1 |${SED} -E -e 's/(^| )-I/\1-isystem /g' -e 's;-isystem /usr/include([/ ]|$);-I/usr/include\1;g')])
 
+dnl enable-fuzz should disable all other targets
+if test "x$enable_fuzz" = "xyes"; then
+  AC_MSG_WARN(enable-fuzz will disable all other targets)
+  build_bitcoin_utils=no
+  build_bitcoin_cli=no
+  build_bitcoin_tx=no
+  build_bitcoin_wallet=no
+  build_bitcoind=no
+  build_bitcoin_libs=no
+  bitcoin_enable_qt=no
+  bitcoin_enable_qt_test=no
+  bitcoin_enable_qt_dbus=no
+  enable_wallet=no
+  use_bench=no
+  use_upnp=no
+  use_zmq=no
+else
+    BITCOIN_QT_INIT
+
+    dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus
+    BITCOIN_QT_CONFIGURE([5.5.1])
+
+    dnl Keep a copy of the original $QT_INCLUDES and use it when invoking qt's moc
+    QT_INCLUDES_UNSUPPRESSED=$QT_INCLUDES
+    if test x$suppress_external_warnings != xno ; then
+      QT_INCLUDES=SUPPRESS_WARNINGS($QT_INCLUDES)
+      QT_DBUS_INCLUDES=SUPPRESS_WARNINGS($QT_DBUS_INCLUDES)
+      QT_TEST_INCLUDES=SUPPRESS_WARNINGS($QT_TEST_INCLUDES)
+    fi
+fi
+
 if test x$enable_wallet != xno; then
     dnl Check for libdb_cxx only if wallet enabled
     BITCOIN_FIND_BDB48
@@ -1155,19 +1187,6 @@ if test x$have_miniupnpc != xno; then
 fi
 fi
 
-BITCOIN_QT_INIT
-
-dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus
-BITCOIN_QT_CONFIGURE([5.5.1])
-
-dnl Keep a copy of the original $QT_INCLUDES and use it when invoking qt's moc
-QT_INCLUDES_UNSUPPRESSED=$QT_INCLUDES
-if test x$suppress_external_warnings != xno ; then
-  QT_INCLUDES=SUPPRESS_WARNINGS($QT_INCLUDES)
-  QT_DBUS_INCLUDES=SUPPRESS_WARNINGS($QT_DBUS_INCLUDES)
-  QT_TEST_INCLUDES=SUPPRESS_WARNINGS($QT_TEST_INCLUDES)
-fi
-
 if test x$build_bitcoin_wallet$build_bitcoin_cli$build_bitcoin_tx$build_bitcoind$bitcoin_enable_qt$use_tests$use_bench = xnonononononono; then
     use_boost=no
 else

doc/fuzzing.md

@@ -52,7 +52,7 @@ For macOS you may need to ignore x86 compilation checks when running `make`:
 To build Dash Core using AFL instrumentation (this assumes that the
 `AFLPATH` was set as above):
 ```
-./configure --disable-ccache --disable-shared --enable-tests --enable-fuzz --disable-wallet --disable-bench --with-utils=no --with-daemon=no --with-libs=no --with-gui=no CC=${AFLPATH}/afl-gcc CXX=${AFLPATH}/afl-g++
+./configure --disable-ccache --disable-shared --enable-tests --enable-fuzz CC=${AFLPATH}/afl-gcc CXX=${AFLPATH}/afl-g++
 export AFL_HARDEN=1
 make
 ```
@@ -102,7 +102,7 @@ libFuzzer is needed (all found in the `compiler-rt` runtime libraries package).
 To build all fuzz targets with libFuzzer, run
 
 ```
-./configure --disable-ccache --disable-wallet --disable-bench --with-utils=no --with-daemon=no --with-libs=no --with-gui=no --enable-fuzz --with-sanitizers=fuzzer,address CC=clang CXX=clang++
+./configure --disable-ccache --enable-fuzz --with-sanitizers=fuzzer,address CC=clang CXX=clang++
 make
 ```