where is Makefile docs??
 

hi guys, I was wondering, where can I find some papers about preparing my own Makefiles??

and also, if u know how to check if a directory exists, pls let me know

there's shedloads of docs on google:

http://www.google.com/search?q=makefile+howto

ah you're so smart, how didn't I think of google,

unfortunatly, after looking 20000 site listed in google, I found exactly nothing about how can I use "conditions" like "if"

This is where I learned makefiles from: http://www.opussoftware.com/tutorial/TutMakefile.htm

I generally use autoconf nowadays though

Which should be the official GNU make manual:
http://www.gnu.org/software/make/manual/make.html

My best advice: find a simple, handwritten makefile somewhere and use it as a `case study' in addition to the manual. And *do* experiment--learning by doing is your friend.

You can find the makefile to my old webpage(*) on http://jonaskoelker.homeunix.org/example.tgz -- for a short period. I wouldn't call it `simple', though.

(*) I used make to automagically do xslt-processing of xml-files. I have now moved over to using a DB (in order to learn *that* too :)).

hth --Jonas

"make" has its own conditionals. They are explained in its info page. Type "info make conditionals" to go to that section directly.

Also, in the commands of the makefile-rules, you can use shell commands including "test", "if" and the like.