Configure for Linux builds

- Use vcpkg for most dependency management.
- Manually include uuid_v4.
- Update README with prerequisites and build instructions.
- Support subproject and standalone builds.

6 files changed, 46 insertions, 59 deletions

diff --git a/.gitignore b/.gitignore
index efb998a..6623964 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,8 +40,11 @@ build/
 # CMake outputs
 _deps/
 CMakeFiles/
+out/
 Makefile
 CTestTestfile.cmake
 CMakeCache.txt
 cmake_install.cmake
-OpenSSL-prefix
+
+# vcpkg
+vcpkg_installed/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 208265a..4c521c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.19)
 cmake_policy(SET CMP0135 NEW)
-project(NostrSDK VERSION 0.0.1)
+project(NostrSDK VERSION 0.1.0)
 
 include(ExternalProject)
 include(FetchContent)
@@ -9,8 +9,6 @@ include(FetchContent)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-list(APPEND CMAKE_PREFIX_PATH ${CMAKE_SOURCE_DIR}/_deps)
-
 get_directory_property(HAS_PARENT PARENT_DIRECTORY)
 if(HAS_PARENT)
     message(STATUS "Configuring as a subproject.")
@@ -20,52 +18,36 @@ if(HAS_PARENT)
     set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/../out/${CMAKE_BUILD_TYPE}/lib/)
     set(CMAKE_INSTALL_PREFIX ${CMAKE_SOURCE_DIR}/../env/)
 
-    set(Boost_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/../env/boost/include)
+    if(DEFINED ENV{WORKSPACE})
+        list(APPEND CMAKE_PREFIX_PATH $ENV{WORKSPACE}/env)
+    else()
+        list(APPEND CMAKE_PREFIX_PATH ${CMAKE_SOURCE_DIR}/../env)
+    endif()
 else()
     message(STATUS "Configuring as a standalone project.")
 
     set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}/bin/)
     set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}/lib/)
     set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}/lib/)
-
-    set(OPENSSL_INCLUDE_DIR ${OPENSSL_ROOT_DIR}/include/)
-    set(OPENSSL_LIBRARIES ${OPENSSL_ROOT_DIR}/lib/)
-endif()
-
-if(DEFINED ENV{WORKSPACE})
-    list(APPEND CMAKE_PREFIX_PATH $ENV{WORKSPACE}/env)
-else()
-    list(APPEND CMAKE_PREFIX_PATH ${CMAKE_SOURCE_DIR}/../env)
 endif()
 
-#======== Find unmanaged dependencies ========#
+#======== Find dependencies ========#
+find_package(nlohmann_json CONFIG REQUIRED)
 find_package(OpenSSL REQUIRED)
-find_package(Boost REQUIRED COMPONENTS filesystem system thread regex)
+find_package(plog CONFIG REQUIRED)
+find_package(websocketpp CONFIG REQUIRED)
 
-#======== Fetch header-only dependencies ========#
-FetchContent_Declare(
-    nlohmann_json
-    URL      https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz
-    URL_HASH SHA256=d6c65aca6b1ed68e7a182f4757257b107ae403032760ed6ef121c9d55e81757d
-    USES_TERMINAL_DOWNLOAD TRUE
-)
-FetchContent_Declare(
-    plog
-    URL https://github.com/SergiusTheBest/plog/archive/refs/tags/1.1.10.tar.gz
-    USES_TERMINAL_DOWNLOAD TRUE
-)
-FetchContent_Declare(
-    websocketpp
-    GIT_REPOSITORY git@github.com:zaphoyd/websocketpp.git
-    GIT_TAG 0.8.2
-)
+#======== Configure uuid_v4 ========#
 FetchContent_Declare(
     uuid_v4
-    URL https://github.com/crashoz/uuid_v4/archive/refs/tags/v1.0.0.tar.gz
-    USES_TERMINAL_DOWNLOAD TRUE
+    GIT_REPOSITORY git@github.com:crashoz/uuid_v4.git
+    GIT_TAG v1.0.0
 )
+FetchContent_Populate(uuid_v4)
+set(uuid_v4_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/_deps/uuid_v4-src/)
 
-FetchContent_MakeAvailable(nlohmann_json plog uuid_v4 websocketpp)
+find_path(uuid_v4_INCLUDE_DIR uuid_v4.h)
+include_directories(${uuid_v4_INCLUDE_DIR})
 
 #======== Build the project ========#
 set(INCLUDE_DIR ./include)
@@ -93,7 +75,6 @@ target_link_libraries(NostrSDK PRIVATE
     OpenSSL::SSL
     OpenSSL::Crypto
     plog::plog
-    uuid_v4::uuid_v4
     websocketpp::websocketpp
 )
 set_target_properties(NostrSDK PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS YES)
@@ -124,7 +105,6 @@ target_link_libraries(NostrSDKTest PRIVATE
     GTest::gtest_main
     NostrSDK
     plog::plog
-    uuid_v4::uuid_v4
     websocketpp::websocketpp
 )
 set_target_properties(NostrSDKTest PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS YES)
diff --git a/CMakePresets.json b/CMakePresets.json
index 8c57178..3e327f5 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -2,12 +2,12 @@
     "version": 2,
     "configurePresets": [
       {
-        "name": "default",
-        "generator": "Ninja",
-        "binaryDir": "${sourceDir}/build",
+        "name": "linux",
+        "generator": "Unix Makefiles",
+        "binaryDir": "${sourceDir}/build/linux",
         "cacheVariables": {
           "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake"
         }
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/README.md b/README.md
index 07ef788..b38e83f 100644
--- a/README.md
+++ b/README.md
@@ -6,11 +6,21 @@ C++ System Development Kit for Nostr
 
 ### Prerequisites
 
-- CMake 3.14 or later
+This project uses CMake as its build system, and vcpkg as its dependency manager.  Thus, to build the SDK, you will need the following:
+
+- CMake 3.19 or later
 - C++17 compiler
-- OpenSSL 1.1.1 or later
-- Boost 1.85 or later
+- vcpkg
+
+### Build Targets
+
+The SDK aims to support Linux, Windows, and macOS build targets.  CMake presets are provided for each target.
+
+#### Linux
 
-### Standalone Build
+To build the SDK on Linux, run the following commands from the project root:
 
-When building this library as a standalone project, the `Boost_INCLUDE_DIR` and `OPENSSL_ROOT_DIR` variables must be set at the CMake configuration step.
+```bash
+cmake --preset=linux .
+cmake --build ./build/linux
+```
diff --git a/include/nostr.hpp b/include/nostr.hpp
index d6d5de1..dab4d71 100644
--- a/include/nostr.hpp
+++ b/include/nostr.hpp
@@ -1,18 +1,21 @@
 #pragma once
 
+#include <algorithm>
 #include <functional>
 #include <mutex>
 #include <string>
 #include <tuple>
+#include <unordered_map>
 #include <vector>
 
+#include <nlohmann/json.hpp>
 #include <openssl/evp.h>
 #include <openssl/sha.h>
-
-#include <nlohmann/json.hpp>
+#include <plog/Init.h>
 #include <plog/Log.h>
 #include <websocketpp/client.hpp>
 #include <websocketpp/config/asio_client.hpp>
+#include <uuid_v4.h>
 
 #include "client/web_socket_client.hpp"
 
diff --git a/src/nostr_service.cpp b/src/nostr_service.cpp
index de40180..f8565cc 100644
--- a/src/nostr_service.cpp
+++ b/src/nostr_service.cpp
@@ -1,12 +1,3 @@
-#include <algorithm>
-
-#include <nlohmann/json.hpp>
-#include <plog/Init.h>
-#include <plog/Log.h>
-#include <websocketpp/client.hpp>
-#include <websocketpp/config/asio_client.hpp>
-#include <uuid_v4/uuid_v4.h>
-
 #include "nostr.hpp"
 #include "client/web_socket_client.hpp"