--------
- makefile处理器: D:\Program Files (x86)\Dev-Cpp\MinGW64\bin\mingw32-make.exe
- 命令: mingw32-make.exe -f "G:\作业\Dev工程\Makefile.win" all

gcc.exe -c main.c -o main.o -I"D:/Program Files (x86)/Dev-Cpp/MinGW64/include" -I"D:/Program Files (x86)/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"D:/Program Files (x86)/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include"

gcc.exe main.o -o 项目1.exe -L"D:/Program Files (x86)/Dev-Cpp/MinGW64/lib" -L"D:/Program Files (x86)/Dev-Cpp/MinGW64/x86_64-w64-mingw32/lib" -static-libgcc

main.o:main.c:(.text+0x26): undefined reference to `por'
collect2.exe: error: ld returned 1 exit status

G:\作业\Dev工程\Makefile.win:25: recipe for target '项目1.exe' failed

mingw32-make.exe: *** [项目1.exe] Error 1


编译结果...
--------
- 错误: 1
- 警告: 0
- 编译时间: 0.66s

谢谢  找到原因了