Re: help with makefile command line

[stan]

Richard G Riley wrote:
> stan <smoore@exis.net> writes:
>
>> Richard G Riley wrote:
>>> "Balaji V. Iyer" <bviyer@ncsu.edu> writes:
>>>
>>>> Hello Everyone,
>>>>     I use the compile option extenstively in emacs. When I type "M-x
>>>> compile" the default line is "make -k" Many times I do not have a make
>>>> file thus I would lke the default line to be
>>>>  
>>>> "gcc -ansi -O4 -Wall <c_source_file>"
>>>>  
>>>> How do I do this?
>>>>  
>>>> I tried the following command but it doesn't seem to work (If anyone
>>>> have a better idea please let me know).
>>>>  
>>>> (function
>>>>  (lambda ()
>>>>    (unless (or (file-exists-p "makefile")
>>>>                (file-exists-p "Makefile"))
>>>>      (setq compile-command
>>>>            (concat "gcc -Wall -O3 -o"
>>>>                    (file-name-sans-extension (file-name-nondirectory
>>>> buffer-file -name))
>>>>                    " "
>>>>                    (file-name-nondirectory buffer-file-name))))))
>> <snip>
>>
>> Seems like it might be easier to write a makefile :) 
>
> Sorry. I'm not sure I understand. You snipped all my code. Did it not
> work for you? I use it on a daily basis.

Sorry I confused with my snip. I'm not the op. I have my setup working
pretty much the way I want ( is anyone ever really satisfied?)
>
>>
>> Do you really mean that you plan to not use makefiles? If not you
>> might
>
> I do use makefiles. It's in the code I gave to you. If the makefile is
> not there then it uses gcc directly which is what you said you
> wanted. Here it is again:
>
> ,----
>| ;;allow compile window to vanish if no errors.
>| (add-hook 'compilation-finish-functions
>|        (lambda (buf str)
>|          (if (string-match "exited abnormally" str) 
>|              (next-error)
>|            ;;no errors, make the compilation window go away in a few seconds
>|            (run-at-time "2 sec" nil 'delete-windows-on (get-buffer-create 
>"*compilation*"))
>|            (message "No Compilation Errors!")
>|            )
>|          ))
>| 
>| (defun my-c-init()
>| 
>|   (line-number-mode 1)
>| 
>|   (setq compilation-window-height 16)
>|   (setq compilation-finish-functions
>|      (lambda (buf str)
>|        (if (string-match "exited abnormally" str)
>| 
>|            ;;there were errors
>|            (message "compilation errors, F11 to goto next error.")
>| 
>|          ;;no errors, make the compilation window go away in 0.5 seconds
>|          ;;        (run-at-time 5.0 nil 'delete-windows-on buf)
>|          (message "NO COMPILATION ERRORS!"))))
>|     
>| 
>|   (c-set-style "linux")
>| 
>|   (setq gdb-show-main t)  
>|   (setq gdb-many-windows t)
>| 
>|   (let ((dl '(
>|               ([f1] . jump-man-page)
>| ;              ([backtab] . semantic-complete-analyze-inline)
>|               ;;           ([f5] . find-tag-noconfirm)
>|               ([f6] . find-tag-repeat)
>|               ([f7] . pop-tag-mark)
>|               ([f2] . gdb-restore-windows)
>|               ([f3] . cscope-find-global-definition-no-prompting)
>|               ([f4] . repeat)
>|               ([f10] . (lambda()(interactive)(mycompile)))
>|               ([f11] . next-error)
>|               ([f12] . gdb))))
>|     (dolist (i dl)
>|          
>|       (define-key c-mode-base-map (car i) (cdr i))
>|       ;;       (define-key c-mode-map (car i) (cdr i))
>|       ;;       (define-key c++-mode-map (car i) (cdr i))
>|       ))
>| 
>|   (define-key c-mode-map
>|     "\C-c\C-f"
>|     'php-search-documentation)
>| 
>|   (define-key c-mode-map
>|     "\C-c\C-m"
>|     'php-browse-manual)
>| 
>|   (define-key c-mode-map
>|     "\C-c\C-c"
>|     'c-browse-faq)
>| 
>|   (global-unset-key "\M-/")
>|   (show-paren-mode 1)
>| 
>| )
>| 
>| (add-hook 'c-mode-common-hook 'my-c-init)
>| 
>| (defun mycompile()
>| 
>|   (unless (or (file-exists-p "makefile")
>|            (file-exists-p "Makefile"))
>|     (set (make-local-variable 'compile-command)
>|       (let ((file (file-name-nondirectory buffer-file-name)))
>|         (format "%s -o %s %s %s %s %s"
>|                 (or (getenv "CC") "gcc")
>|                 (file-name-sans-extension file)
>|                 (or (getenv "GTKFLAGS") "")
>|                 (or (getenv "CPPFLAGS")"-DDEBUG=9")
>|                 (or (getenv "CFLAGS") "-std=c99 -pedantic -Wall -Wshadow 
>-Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion  
>-Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations 
>-Wredundant-decls -Wnested-externs -Winline -g")
>|                 file)))
>|     
>|     )
>|   (compile compile-command)
>|   )
>| 
> `----
>
>
>> just want to change the command on a session basis. You do know that you
>> can backspace over the make -k and simply type g++ -Wall -g file.cpp and
>> that will become the new command until you close emacs. I tend to do
>> that when working on small throwaway programs. 
>
> Yes, I do know that. But why would I do that when I can automate it as
> above depending on whether there is a Makefile or not?

Again, our streams got crossed at my snip. Both of our comments should
have been directed to the OP and not each other.
>
>>
>> Another idea, if you don't like what Eli suggested earlier is to come up
>> with a makefile template and use auto insert. I have a template that I
>> only need to basically change the list of files in and it save a lot of
>> time during the compile, run. scream. debug, edit cycle.
>>
>> Finally, you can edit the compile command for all time but it seems like
>> a bad idea.
>
> I'm not sure I understand. I have makefiles for most of my projects. If
> I don't have one it builds a compile and link command based on the c
> file name which is what you requested.
>
> Sorry I can't be more help. Did you try my code?

See above. I didn't snip this time for fear of losing you again :)