Allow fetching locally ZeroMQ if not already installed

.drone.yml

@@ -6,5 +6,5 @@ steps:
   - name: build
     image: hub.codefirst.iut.uca.fr/clement.freville2/planificador-build-image:latest
     commands:
-      - mkdir build && cd build && cmake ..
-      - make
+      - cmake -B build -S .
+      - cmake --build build --parallel $(nproc)

.gitignore

@@ -1,3 +1,7 @@
 bin
 build
 obj
+
+.idea
+.vscode
+cmake-build-debug

CMakeLists.txt

@@ -1,19 +1,45 @@
 cmake_minimum_required(VERSION 3.10)
+set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
 
 project(planificador)
 
-add_compile_options(-Wall -Wextra -pedantic)
-
 include(FetchContent)
 
 FetchContent_Declare(
-    tomlplusplus
-    GIT_REPOSITORY https://github.com/marzer/tomlplusplus.git
-    GIT_TAG        v3.3.0
+        tomlplusplus
+        GIT_REPOSITORY https://github.com/marzer/tomlplusplus.git
+        GIT_TAG v3.3.0
 )
 FetchContent_MakeAvailable(tomlplusplus)
 
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/libzmq-pkg-config)
+find_package(ZeroMQ QUIET)
+
+if (NOT ZeroMQ_FOUND)
+    message(STATUS "ZeroMQ not found, using bundled version")
+    FetchContent_Declare(
+            zeromq
+            GIT_REPOSITORY https://github.com/zeromq/libzmq.git
+            GIT_TAG v4.3.5
+    )
+    FetchContent_Declare(
+            cppzmq
+            GIT_REPOSITORY https://github.com/zeromq/cppzmq.git
+            GIT_TAG v4.10.0
+    )
+    set(WITH_PERF_TOOL OFF)
+    set(ENABLE_CPACK OFF)
+    set(ZMQ_BUILD_TESTS OFF)
+    set(WITH_TLS OFF)
+    set(WITH_DOC OFF)
+    set(CPPZMQ_BUILD_TESTS OFF)
+    FetchContent_MakeAvailable(zeromq cppzmq)
+    include_directories(${zeromq_SOURCE_DIR}/include)
+    include_directories(${cppzmq_SOURCE_DIR})
+endif ()
+
 add_executable(planificador src/host.cpp src/runner.cpp src/config.cpp src/main.cpp)
+target_compile_options(planificador PUBLIC -Wall -Wextra -pedantic)
 target_compile_features(planificador PUBLIC cxx_std_17)
 
 include_directories(${tomlplusplus_SOURCE_DIR}/include)

libzmq-pkg-config/FindZeroMQ.cmake

@@ -0,0 +1,28 @@
+# Adapted from https://github.com/zeromq/cppzmq/blob/master/CMakeLists.txt
+set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH ON)
+find_package(PkgConfig)
+pkg_check_modules(PC_LIBZMQ QUIET libzmq)
+
+set(ZeroMQ_VERSION ${PC_LIBZMQ_VERSION})
+
+find_path(ZeroMQ_INCLUDE_DIR zmq.h
+        PATHS ${ZeroMQ_DIR}/include
+        ${PC_LIBZMQ_INCLUDE_DIRS})
+
+find_library(ZeroMQ_LIBRARY
+        NAMES zmq
+        PATHS ${ZeroMQ_DIR}/lib
+        ${PC_LIBZMQ_LIBDIR}
+        ${PC_LIBZMQ_LIBRARY_DIRS})
+
+if(ZeroMQ_LIBRARY)
+    set(ZeroMQ_FOUND ON)
+endif()
+
+set ( ZeroMQ_LIBRARIES ${ZeroMQ_LIBRARY} )
+set ( ZeroMQ_INCLUDE_DIRS ${ZeroMQ_INCLUDE_DIR} )
+
+include ( FindPackageHandleStandardArgs )
+# handle the QUIETLY and REQUIRED arguments and set ZMQ_FOUND to TRUE
+# if all listed variables are TRUE
+find_package_handle_standard_args ( ZeroMQ DEFAULT_MSG ZeroMQ_LIBRARIES ZeroMQ_INCLUDE_DIRS )