option to disable building libraries (zcutil/build.sh)

zcutil/build.sh

@@ -33,7 +33,7 @@ Usage:
 $0 --help
   Show this help message and exit.
 
-$0 [ --enable-lcov || --disable-tests ] [ --disable-mining ] [ --disable-rust ] [ --enable-proton ] [ MAKEARGS... ]
+$0 [ --enable-lcov || --disable-tests ] [ --disable-mining ] [ --disable-rust ] [ --enable-proton ] [ --disable-libs ] [ MAKEARGS... ]
   Build Zcash and most of its transitive dependencies from
   source. MAKEARGS are applied to both dependencies and Zcash itself.
 
@@ -50,6 +50,9 @@ $0 [ --enable-lcov || --disable-tests ] [ --disable-mining ] [ --disable-rust ]
   If --enable-proton is passed, Zcash is configured to build the Apache Qpid Proton
   library required for AMQP support. This library is not built by default.
   It must be passed after the test/mining/Rust arguments, if present.
+
+  If --disable-libs is passed, Zcash is configured to not build any libraries like
+  'libzcashconsensus'.
 EOF
     exit 0
 fi
@@ -96,6 +99,14 @@ then
     shift
 fi
 
+# If --disable-libs is the next argument, build without libs:
+LIBS_ARG=''
+if [ "x${1:-}" = 'x--disable-libs' ]
+then
+    LIBS_ARG='--without-libs'
+    shift
+fi
+
 PREFIX="$(pwd)/depends/$BUILD/"
 
 eval "$MAKE" --version
@@ -106,5 +117,5 @@ ld --version
 
 HOST="$HOST" BUILD="$BUILD" NO_RUST="$RUST_ARG" NO_PROTON="$PROTON_ARG" "$MAKE" "$@" -C ./depends/ V=1
 ./autogen.sh
-CC="$CC" CXX="$CXX" ./configure --prefix="${PREFIX}" --host="$HOST" --build="$BUILD" "$RUST_ARG" "$HARDENING_ARG" "$LCOV_ARG" "$TEST_ARG" "$MINING_ARG" "$PROTON_ARG" CXXFLAGS='-fwrapv -fno-strict-aliasing -Werror -g'
+CC="$CC" CXX="$CXX" ./configure --prefix="${PREFIX}" --host="$HOST" --build="$BUILD" "$RUST_ARG" "$HARDENING_ARG" "$LCOV_ARG" "$TEST_ARG" "$MINING_ARG" "$PROTON_ARG" "$LIBS_ARG" CXXFLAGS='-fwrapv -fno-strict-aliasing -Werror -g'
 "$MAKE" "$@" V=1