initial setup with deps

external/CMakeLists.txt

@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
+
+
+add_subdirectory(./solanaceae_util)
+#add_subdirectory(./solanaceae_plugin)
+
+add_subdirectory(./entt)
+
+add_subdirectory(./solanaceae_contact)
+add_subdirectory(./solanaceae_message3)
+
+# TODO: move to clamav.cmake
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+	pkg_check_modules(PKGC_CLAMAV QUIET IMPORTED_TARGET libclamav)
+
+	if (PKGC_CLAMAV_FOUND)
+		add_library(libclamav ALIAS PkgConfig::PKGC_CLAMAV)
+		message("II libclamav found using pkg-config")
+	endif()
+endif()
+
+if (NOT TARGET libclamav)
+	include(FetchContent)
+	set(ENABLE_LIBCLAMAV_ONLY ON)
+	set(ENABLE_APP OFF)
+	set(ENABLE_TESTS OFF)
+	FetchContent_Declare(clamav
+		GIT_REPOSITORY https://github.com/Cisco-Talos/clamav.git
+		GIT_TAG clamav-1.2.0
+
+		# find_package is tried first
+		FIND_PACKAGE_ARGS NAMES libclamav
+	)
+
+	FetchContent_MakeAvailable(clamav)
+endif()
+

external/entt/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
+
+add_subdirectory(./entt EXCLUDE_FROM_ALL)
+