[英]GCC: Undefined reference (Makefile issue)
嘗試根據Makefile規則使用gcc編譯這些文件。 在cygwin上運行gcc / make。
這是makefile:
CC = gcc
CFLAGS = -g -O2 -Wall -std=c99
OBJECTS = simulation.o element.o
simulation.exe : $(OBJECTS)
$(CC) $(CFLAGS) -o simulation.exe $(OBJECTS)
simulation.o : file_priorite.o element.o
$(CC) $(CFLAGS) -c simulation.c
file_priorite.o: file_priorite.h element.o
$(CC) $(CFLAGS) -c file_priorite.c
element.o : element.h
$(CC) $(CFLAGS) -c element.c
clean:
rm -f *.o simulation.exe
並得到這些錯誤:
CLEAN SUCCESSFUL (total time: 52ms)
gcc -g -O2 -Wall -std=c99 -c element.c
gcc -g -O2 -Wall -std=c99 -c simulation.c
gcc -g -O2 -Wall -std=c99 -o simulation.exe simulation.o element.o
simulation.o: In function `main':
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:11: undefined reference to `construire'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:11:(.text.startup+0x17): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `construire'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:20: undefined reference to `ajouter_element'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:20:(.text.startup+0x69): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `ajouter_element'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:23: undefined reference to `consommer_element'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:23:(.text.startup+0x76): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `consommer_element'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:23: undefined reference to `consommer_element'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:23:(.text.startup+0x86): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `consommer_element'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:25: undefined reference to `obtenir_taille'
/cygdrive/d/Dropbox/UQAM AUTOMNE 2014/INF7330/lab10/lab10/simulation.c:25:(.text.startup+0x96): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `obtenir_taille'
collect2: error: ld returned 1 exit status
Makefile:6: recipe for target 'simulation.exe' failed
make: *** [simulation.exe] Error 1
有問題的功能都在file_priorite.c
實現。
任何想法?
你需要
OBJECTS = simulation.o element.o file_priorite.o
請注意,您的構建日志不包含任何形式的file_priorite
這意味着您沒有針對它進行構建/鏈接。 將file_priorite.o
添加到您的OBJECTS
行。
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