没有可用于 Eclipse 中 c++ "main()"错误的源

No source available for "main()" error for c++ in Eclipse

本文关键字：main 错误 c++ 用于 Eclipse      更新时间：2023-10-16

我知道很多人以前问过这个问题，但我无法解决它。我想在 eclipse 中调试一个生成文件项目，但我不能。我只是在学习 c++，不知道如何编写 makefile，但我的老师给了我一个让我使用，我在下面发布了它。如何修复此错误？

另外，如果它对你们有任何帮助，我只想调试 DijkstraTest.cpp main 函数，而不是任何其他函数。

# first name a variable objects for all object files
# FOR strauss
#CXX = CC
objectsqueue = LinkedList.o
objectstestqueue = QueueTests.o
objectsheap = BinaryHeap.o
objectstestheap = BinaryHeapTest.o
objectsdijkstra = CSV.o Network.o Dijkstra.o
objectstestdijkstra = DijkstraTest.o
# name a variable sources for all source files
sourcesqueue = LinkedList.cpp
sourcestestqueue = QueueTests.cpp
sourcesheap = BinaryHeap.cpp
sourcestestheap = BinaryHeapTest.cpp
sourcesdijkstra = CSV.cpp Network.cpp Dijkstra.cpp
sourcestestdijkstra = DijkstraTest.cpp
# now make default target all exe files
all: testqueue testheap testdijkstra
# list the dependencies for object files - those header files which help build objects
LinkedList.cpp: Collection.h Stack.h Queue.h
QueueTests.o: QueueTests.cpp LinkedList.cpp
BinaryHeap.o: BinaryHeap.h 
BinaryHeapTest.o: BinaryHeap.h 
Dijkstra.o: CSV.h Dijkstra.h Network.h BinaryHeap.h 
# how to build all object files from all dependent source files
$(objectsqueue): $(sourcesqueue)
$(CXX) -c $(sourcesqueue) $(INCLUDES)
$(objectstestqueue): $(sourcestestqueue)
$(CXX) -c $(sourcestestqueue) $(INCLUDES)
$(objectsheap): $(sourcesheap)
$(CXX) -c $(sourcesheap) $(INCLUDES)
$(objectstestheap): $(sourcestestheap)
$(CXX) -c $(sourcestestheap) $(INCLUDES)
$(objectsdijkstra): $(sourcesdijkstra)
$(CXX) -c $(sourcesdijkstra) $(INCLUDES)
$(objectstestdijkstra): $(sourcestestdijkstra)
$(CXX) -c $(sourcestestdijkstra) $(INCLUDES)
clean:
rm -f *.o
rm -f *.exe
testqueue:  $(objectsqueue) $(objectstestqueue)
$(CXX) -o QueueTests.exe $(objectsqueue) $(objectstestqueue)
testheap: $(objectsheap) $(objectstestheap) 
$(CXX) -o BinaryHeapTest.exe $(objectsheap) $(objectstestheap)
testdijkstra: $(objectsheap) $(objectsdijkstra) $(objectstestdijkstra) 
$(CXX) -o DijkstraTest.exe $(objectsheap) $(objectsdijkstra) $(objectstestdijkstra)

为了能够调试应用程序，您需要使用 -g （debug） 标志编译它：

CXXFLAGS=-g
$(objectsqueue): $(sourcesqueue)
$(CXX) $(CXXFLAGS) -c $(sourcesqueue) $(INCLUDES)
...
testqueue:  $(objectsqueue) $(objectstestqueue)
$(CXX) $(CXXFLAGS) -o QueueTests.exe $(objectsqueue) $(objectstestqueue)
....

您需要对所有编译规则使用此标志。

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