add a dll example

DataEraserC · DataEraserC · commit 3e657965a5a2 · 2024-10-18T12:05:24.000+08:00
diff --git a/cpp/Dll/.gitignore b/cpp/Dll/.gitignore
@@ -0,0 +1,33 @@
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+main
diff --git a/cpp/Dll/SortComponent.cpp b/cpp/Dll/SortComponent.cpp
@@ -0,0 +1,15 @@
+#include "SortComponent.h"
+
+extern "C" {
+void DECLSPEC sortNumbers(int *numbers, int size) {
+  for (int i = 0; i < size - 1; ++i) {
+    for (int j = 0; j < size - i - 1; ++j) {
+      if (numbers[j] > numbers[j + 1]) {
+        int temp = numbers[j];
+        numbers[j] = numbers[j + 1];
+        numbers[j + 1] = temp;
+      }
+    }
+  }
+}
+}
diff --git a/cpp/Dll/SortComponent.h b/cpp/Dll/SortComponent.h
@@ -0,0 +1,29 @@
+#ifndef SORT_COMPONENT_H
+#define SORT_COMPONENT_H
+
+#if defined _WIN32 || defined __CYGWIN__
+#ifdef EXPORTING_DLL
+#ifdef __GNUC__
+#define DECLSPEC __attribute__((dllexport))
+#else
+#define DECLSPEC __declspec(dllexport)
+#endif
+#else
+#ifdef __GNUC__
+#define DECLSPEC __attribute__((dllimport))
+#else
+#define DECLSPEC __declspec(dllimport)
+#endif
+#endif
+#else
+#if __GNUC__ >= 4
+#define DECLSPEC __attribute__((visibility("default")))
+#else
+#define DECLSPEC
+#endif
+#endif
+
+extern "C" {
+DECLSPEC void sortNumbers(int *numbers, int size);
+}
+#endif // SORT_COMPONENT_H
diff --git a/cpp/Dll/main.cpp b/cpp/Dll/main.cpp
@@ -0,0 +1,15 @@
+#include "SortComponent.h"
+#include <iostream>
+
+int main() {
+  int numbers[10] = {5, 3, 8, 6, 2, 7, 4, 9, 1, 0};
+
+  sortNumbers(numbers, 10);
+
+  for (int i = 0; i < 10; ++i) {
+    std::cout << numbers[i] << " ";
+  }
+  std::cout << std::endl;
+
+  return 0;
+}
diff --git a/cpp/Dll/makefile b/cpp/Dll/makefile
@@ -0,0 +1,29 @@
+CXX := g++
+CXXFLAGS := -Wall -std=c++11
+
+SRC := $(wildcard *.cpp)
+OBJ := $(SRC:.cpp=.o)
+DLL := libSortComponent.so
+EXEC := main
+
+LIBDIR := .
+LDFLAGS :=  -L$(LIBDIR) -lSortComponent
+
+all: $(DLL) $(EXEC)
+
+$(DLL): SortComponent.o
+	$(CXX) -shared -o $@ $^
+
+$(EXEC): main.o
+	$(CXX) -o $@ $^ $(LDFLAGS)
+
+%.o: %.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+clean:
+	rm -f $(OBJ) $(DLL) $(EXEC)
+
+run: $(EXEC)
+	LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH ./$(EXEC)
+
+.PHONY: all clean test
