creating make files

This is a discussion on creating make files within the Linux Programming forums, part of the Platform Specific Boards category; can someone please give me an example of a makefile. what i am trying to do is compile two files ...

  1. #1
    Unregistered
    Guest

    creating make files

    can someone please give me an example of a makefile. what i am trying to do is compile two files with gcc by using the make comand. right now i have

    all:
    gcc -o file1 file1.c
    gcc -o file2 file2.c


    and if i issue the make command i get

    make: Fatal error in reader: Makefile, line 3: Unexpected end of line seen

    help!!!
    thanks.

  2. #2
    Registered User
    Join Date
    Aug 2001
    Posts
    79
    Are you trying to compile two programs, or simply compile a single program that has two .c source files?

    Either way, you're not supposed to generate the Makefile yourself. You generate the Makefile.am and the configure.in(I think. There might be programs to help. I'm rather new to programming in Linux).

    type:
    $info automake

    In the former case, examples->ctags&etags is a good example.

    In the latter case, either use a different example or just read the rest of the docs(which are better than your average info help).
    All generalizations are false

  3. #3
    Registered User Xaviar Khan's Avatar
    Join Date
    Sep 2001
    Posts
    10

    Talking actually...

    Actually,
    You can and should create your own make file. Just to be sure you know what you want.

    I'm using Redhat Linux 6.2 on an i686
    not sure if that would affect your makefile any, but the type of OS you are running would no doubt have an effect on the syntax of the things you use.

    Here's a look at my makefile.
    Code:
    CC      = gcc
    PROF    =
    OPTOMIZ = -O2
    DEBUG   = -g3
    WARN    = -Wall
    #C_FLAGS = $(PROF) $(OPTOMIZ) $(WARN) $(DEBUG)
    C_FLAGS = -c -O -Wall -g3
    L_FLAGS = -static -g
    CRYPT   = -lcrypt
    SYSTEM  =
    
    O_FILES = act_comm.o act_info.o act_move.o blah blah blah
    (i'm not sure you need the names of my '.o' files... but here is wher you put your files to be compiled)  be sure to leave a '~' at the end or bad things will happen ;)
    I'm also using the concurrent versioning system (CVS) so things are subject to changes if you are not.

    HTH
    Xaviar Khan
    Programmer/Owner
    Shards of Destiny (SoD)
    ---------------------------------------
    Reach us with any MUD client at ShardsofDestiny.org
    port 9000.
    +------------------------------------+
    | Html/Java support added, |
    | 'www.ShardsofDestiny.org' |
    +------------------------------------+

  4. #4
    Registered User Strider's Avatar
    Join Date
    Aug 2001
    Posts
    149
    Your best bet is to be very specific and break it down into the separate parts.

    Code:
    #######################################
    #
    # Makefile
    #
    
    FILES = file1.c file2.c
    
    OBJECTS = file1.o file2.o
    
    all:      $(OBJECTS)
              gcc -o NameOfExecutable $(OBJECTS)
    
    file1.o:  $(FILES) $(OBJECTS)
              gcc -c file1.c
    
    file2.o:  $(FILES) $(OBJECTS)
              gcc -c file2.c
    Also make certain there is no CrLf after the last item.

    David
    Last edited by Strider; 09-06-2001 at 03:54 PM.
    One Ring to rule them all, One Ring to find them,
    One Ring to bring them all and in the darkness bind them
    In the Land of Mordor where the Shadows lie.

  5. #5
    vickyloveslinux@yahoo.com
    Guest
    a simple hint with the last example



    parameter_name : dependent files (a.out and the files you'll use )
    <tab very imp ok> commands



    enjoy

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