I am trying to make a makefile in UNIX for 7 files (main.cpp, size.h, size.cpp,

Question

I am trying to make a makefile in UNIX for 7 files (main.cpp, size.h, size.cpp, history.h, history.cpp, extra.h, and extra.cpp). I get an error that says "cc1plus: error: unrecognised debug output level "co". Can someone help me figure out what this error means and how I need to fix it. I also attached the criteria of the assignment.

# Macro defined as CC
CC = g++

DIR = /home/majors/ison/Assignment7/lib

# Compile only flags. Turns on the interactive debugger. Specifies the compile only option. Compiled with the -c option before linking.
CFLAGS = -gco

# Link flags. Turns on the interactive debugger. Compiled with the -c option before linking.
LFLAGS = -gc -I$(DIR)   # Allows for system level files to be placed in the current directory.

main: main.cpp extra.cpp history.cpp size.cpp
        $(CC) $(LFLAGS) -o main main.cpp extra.cpp history.cpp size.cpp   # The flag -o main makes the output main.

main.cpp: size.h extra.h
        $(CC) $(CFLAGS) main.cpp size.h extra.h

extra.cpp: extra.h
        $(CC) $(CFLAGS) extra.cpp extra.h

history.cpp: history.h
        $(CC) $(CFLAGS) history.cpp history.h

size.cpp: size.h
        $(CC) $(CFLAGS) size.cpp size.h

# Cleans up any temporary files after the compile and link.
clean:
        rm -rf *o main

Requirements Macros must also be used to define the Compile only flags and link flags. The compile only flags should turn on the interactive debugger (-g option, should specify the compile only option (-c) The link flags should allow for system level files to be placed in the current directory(-I. The compiler must have a macro defined as CC so that it can be modified by a parameter You may add the option to name the output main o main) or some similar name or leave it to default to a out The Link flags should turn on the interactive debugger (-g) All files, including the main routine must be compiled with the option first before linking. Your makefile must clean up any temporary files after the compile and link such as the .o files You must include comments in your makefile to explain each rule

Explanation / Answer

Hi

The error is due to LFLAGS which uses to link the system level files in current project directory.

Please find the modified Makefile

# Macro defined as CC
CC = g++

DIR = /home/majors/ison/Assignment7/lib

# Compile only flags. Turns on the interactive debugger. Specifies the compile only option. Compiled with the -c option before linking.
CFLAGS = -gco

# Link flags. Turns on the interactive debugger. Compiled with the -c option before linking.
LFLAGS = -g -I$(DIR)   # Allows for system level files to be placed in the current directory.

main: main.cpp extra.cpp history.cpp size.cpp
        $(CC) $(LFLAGS) -o main main.cpp extra.cpp history.cpp size.cpp   # The flag -o main makes the output main.

main.cpp: size.h extra.h
        $(CC) $(CFLAGS) main.cpp size.h extra.h

extra.cpp: extra.h
        $(CC) $(CFLAGS) extra.cpp extra.h

history.cpp: history.h
        $(CC) $(CFLAGS) history.cpp history.h

size.cpp: size.h
        $(CC) $(CFLAGS) size.cpp size.h

# Cleans up any temporary files after the compile and link.
clean:
        rm -rf *o main

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