Add optional support for git submodule building (#172)

.github/workflows/build-ubuntu.yml

@@ -14,8 +14,40 @@ env:
         echo "Acquire::Retries \"3\";"         | sudo tee -a /etc/apt/apt.conf.d/80-custom
         echo "Acquire::http::Timeout \"120\";" | sudo tee -a /etc/apt/apt.conf.d/80-custom
         echo "Acquire::ftp::Timeout \"120\";"  | sudo tee -a /etc/apt/apt.conf.d/80-custom
+  BREW_INSTALL_MAC: 'HOMEBREW_NO_AUTO_UPDATE=1 brew install boost hidapi openssl zmq libpgm miniupnpc expat libunwind-headers protobuf unbound'
 
 jobs:
+  build-beginner:
+    runs-on: ${{matrix.os}}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    steps:
+      - name: set apt conf (Debian base Linux)
+        if: matrix.os == 'ubuntu-latest'
+        run: ${{env.APT_SET_CONF}}
+      - name: update apt (Debian based Linux)
+        if: matrix.os == 'ubuntu-latest'
+        run: sudo apt update
+      - name: Install dependencies (Debian based Linux)
+        if: matrix.os == 'ubuntu-latest'
+        run: ${{env.APT_INSTALL_LINUX}}
+      - name: Install dependencies (MacOS)
+        if: matrix.os == 'macos-latest'
+        run: ${{env.BREW_INSTALL_MAC}}
+      - name: Checkout LWS Source
+        uses: actions/checkout@v4
+        with:
+          path: ${{github.workspace}}/lws
+          submodules: recursive
+      - name: Configure LWS
+        # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+        # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+        run: cmake -B ${{github.workspace}}/lws/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} ${{github.workspace}}/lws
+      - name: Build LWS
+        # Build your program with the given configuration
+        run: (cd ${{github.workspace}}/lws/build && make -j$(nproc))
   build-tests:
     runs-on: ${{matrix.os}}
     strategy:
@@ -39,7 +71,7 @@ jobs:
 
     - name: Install dependencies (MacOS)
       if: matrix.os == 'macos-latest' || matrix.os == 'macos-13' || matrix.os == 'macos-14'
-      run: HOMEBREW_NO_AUTO_UPDATE=1 brew install boost hidapi openssl zmq libpgm miniupnpc expat libunwind-headers protobuf
+      run: ${{env.BREW_INSTALL_MAC}}
     - name: Install RabbitMQ iff WITH_RMQ (MacOS)
       if: matrix.rmq == 'WITH_RMQ=ON' && (matrix.os == 'macos-latest' || matrix.os == 'macos-13' || matrix.os == 'macos-14')
       run: HOMEBREW_NO_AUTO_UPDATE=1 brew install rabbitmq-c

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "external/monero"]
+	path = external/monero
+	url = https://github.com/monero-project/monero.git

CMakeLists.txt

@@ -41,6 +41,14 @@ if (WITH_RMQ)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DMLWS_RMQ_ENABLED")
 endif()
 
+if(STATIC)
+  if(MSVC)
+    set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .dll.a .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
+  else()
+    set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
+  endif()
+endif()
+
 set(MONERO_LIBRARIES
   daemon_messages
   serialization
@@ -64,10 +72,11 @@ set(MONERO_LIBRARIES
   easylogging
   version
   wallet-crypto
-  unbound
 )
 
-set(MONERO_OPTIONAL unbound wallet-crypto)
+set(MONERO_OPTIONAL wallet-crypto)
+
+if (MONERO_BUILD_DIR)
 
   set(MONERO_SEARCH_PATHS
     "/contrib/epee/src"
@@ -92,18 +101,6 @@ if (NOT MONERO_SOURCE_DIR)
     message(FATAL_ERROR "The argument -DMONERO_SOURCE_DIR must specify a location of a monero source tree")
   endif()
 
-if (NOT MONERO_BUILD_DIR)
-  message(FATAL_ERROR "The argument -DMONERO_BUILD_DIR must specify a location of an existing monero build")
-endif()
-
-if(STATIC)
-  if(MSVC)
-    set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .dll.a .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
-  else()
-    set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
-  endif()
-endif()
-
   # monero `master` and `release-v0.18` branches use different LIBSODIUM
   # find routines. So the upstream cmake names differ
 
@@ -148,6 +145,48 @@ if ("${monero_HIDAPI_LIBRARY}" STREQUAL "HIDAPI_LIBRARY-NOTFOUND")
     unset(monero_HIDAPI_LIBRARY)
   endif()
 
+  foreach (LIB ${MONERO_LIBRARIES})
+    find_library(LIB_PATH NAMES "${LIB}" PATHS ${MONERO_BUILD_DIR} PATH_SUFFIXES "/src/${LIB}" "external/${LIB}" ${MONERO_SEARCH_PATHS} NO_DEFAULT_PATH)
+
+    list(FIND MONERO_OPTIONAL "${LIB}" LIB_OPTIONAL)
+    if (NOT LIB_PATH)
+      if (LIB_OPTIONAL EQUAL -1)
+        message(FATAL_ERROR "Unable to find required Monero library ${LIB}")
+      endif()
+    else ()
+      set(LIB_NAME "monero::${LIB}")
+      add_library(${LIB_NAME} STATIC IMPORTED)
+      set_target_properties(${LIB_NAME} PROPERTIES IMPORTED_LOCATION ${LIB_PATH})
+      list(APPEND IMPORTED_MONERO_LIBRARIES "${LIB_NAME}")
+    endif()
+    unset(LIB_PATH CACHE)
+  endforeach()
+
+  set(LMDB_INCLUDE "${monero_LMDB_INCLUDE}")
+  set(LMDB_LIB_PATH "monero::lmdb")
+else () # NOT MONERO_BUILD_DIR
+  if (NOT MONERO_SOURCE_DIR)
+    set (MONERO_SOURCE_DIR "${monero-lws_SOURCE_DIR}/external/monero")
+  endif ()
+
+  include(FetchContent)
+  FetchContent_Declare(monero SOURCE_DIR "${MONERO_SOURCE_DIR}")
+
+  if (NOT monero_POPULATED)
+    FetchContent_MakeAvailable(monero)
+  endif ()
+
+  set(MONERO_BUILD_DIR "${monero_BINARY_DIR}")
+  set(IMPORTED_MONERO_LIBRARIES "${MONERO_LIBRARIES}")
+  set(monero_Boost_THREAD_LIBRARY_RELEASE "${Boost_THREAD_LIBRARY_RELEASE}")
+  set(monero_pkgcfg_lib_libzmq_zmq "${pkgcfg_lib_libzmq_zmq}")
+  if (SODIUM_LIBRARY)
+    set(monero_SODIUM_LIBRARY "${SODIUM_LIBRARY}")
+  else()
+    set(monero_SODIUM_LIBRARY "${monero_sodium_LIBRARY_RELEASE}")
+  endif()
+endif()
+
 #
 # Dependencies specific to monero-lws
 #
@@ -177,8 +216,6 @@ else()
   set(RMQ_LIBRARY "")
 endif()
 
-set(LMDB_INCLUDE "${monero_LMDB_INCLUDE}")
-set(LMDB_LIB_PATH "monero::lmdb")
 set(ZMQ_INCLUDE_PATH "${libzmq_INCLUDE_DIRS}")
 set(ZMQ_LIB "${monero_pkgcfg_lib_libzmq_zmq}")
 if (monero_SODIUM_LIBRARY)
@@ -212,23 +249,6 @@ if(STATIC AND NOT IOS)
   endif()
 endif()
 
-foreach (LIB ${MONERO_LIBRARIES})
-  find_library(LIB_PATH NAMES "${LIB}" PATHS ${MONERO_BUILD_DIR} PATH_SUFFIXES "/src/${LIB}" "external/${LIB}" ${MONERO_SEARCH_PATHS} NO_DEFAULT_PATH)
-
-  list(FIND MONERO_OPTIONAL "${LIB}" LIB_OPTIONAL)
-  if (NOT LIB_PATH)
-    if (LIB_OPTIONAL EQUAL -1)
-      message(FATAL_ERROR "Unable to find required Monero library ${LIB}")
-    endif()
-  else ()
-    set(LIB_NAME "monero::${LIB}")
-    add_library(${LIB_NAME} STATIC IMPORTED)
-    set_target_properties(${LIB_NAME} PROPERTIES IMPORTED_LOCATION ${LIB_PATH})
-    list(APPEND IMPORTED_MONERO_LIBRARIES "${LIB_NAME}")
-  endif()
-  unset(LIB_PATH CACHE)
-endforeach()
-
 if(APPLE)
   find_library(IOKIT_LIBRARY IOKit)
   list(APPEND IMPORTED_MONERO_LIBRARIES ${IOKIT_LIBRARY})