feat: add shared library build and example application

app/Makefile

@@ -0,0 +1,41 @@
+ROOT_DIR := $(abspath ..)
+
+CC := gcc
+
+CXXFLAGS := -std=c++17 \
+            -Wall \
+            -Wextra \
+            -Werror \
+            -I$(ROOT_DIR)/core/include \
+            -I$(ROOT_DIR)/logger/include
+
+LDFLAGS := -L$(ROOT_DIR)/build \
+           -llogger \
+           -lstdc++ \
+           -Wl,-rpath,$(ROOT_DIR)/build
+
+BUILD_DIR := $(ROOT_DIR)/build
+
+TARGET := $(BUILD_DIR)/logger_app
+
+SRC := src/main.cpp
+
+
+.PHONY: all clean
+
+
+all: $(TARGET)
+
+
+$(TARGET): $(SRC)
+	@mkdir -p $(BUILD_DIR)
+
+	$(CC) \
+		$(CXXFLAGS) \
+		$< \
+		-o $@ \
+		$(LDFLAGS)
+
+
+clean:
+	rm -f $(TARGET)

app/src/main.cpp

@@ -0,0 +1,17 @@
+#include <iostream>
+
+#include "logger.hpp"
+
+int main() {
+  logger::Logger logger("app.log", logger::LogLevel::info());
+
+  auto status = logger.writeMessage("Hello from shared library");
+
+  if (!status.isSuccess()) {
+    std::cerr << status.getError() << '\n';
+
+    return 1;
+  }
+
+  return 0;
+}

logger/Makefile

@@ -0,0 +1,40 @@
+ROOT_DIR := $(abspath ..)
+
+CC := gcc
+
+CXXFLAGS := -std=c++17 \
+            -Wall \
+            -Wextra \
+            -Werror \
+            -fPIC \
+            -I$(ROOT_DIR)/core/include \
+            -Iinclude
+
+LDFLAGS := -lstdc++
+
+BUILD_DIR := $(ROOT_DIR)/build
+
+TARGET := $(BUILD_DIR)/liblogger.so
+
+SRC := src/logger.cpp
+
+
+.PHONY: all clean
+
+
+all: $(TARGET)
+
+
+$(TARGET): $(SRC)
+	@mkdir -p $(BUILD_DIR)
+
+	$(CC) \
+		$(CXXFLAGS) \
+		-shared \
+		$< \
+		-o $@ \
+		$(LDFLAGS)
+
+
+clean:
+	rm -f $(TARGET)

logger/include/export.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+#if defined(_WIN32)
+#define LOGGER_API __declspec(dllexport)
+#else
+#define LOGGER_API __attribute__((visibility("default")))
+#endif

logger/include/logger.hpp

@@ -2,6 +2,7 @@
 
 #include <string>
 
+#include "export.hpp"
 #include "log_level.hpp"
 #include "result.hpp"
 
@@ -19,7 +20,7 @@ namespace logger {
  * Методы with* используют неизменяемый подход:
  * они создают новый экземпляр Logger с изменённой конфигурацией.
  */
-class Logger {
+class LOGGER_API Logger {
 public:
   /**
    * @brief Создаёт объект логгера.