Autotools Mythbuster

Post by J_Darnley » Fri, Dec 18, 2015, 12:49 AM UTC

MichaelMoser123 wrote: post #52

david-given wrote: post #42

Earlier quoted context omitted.

Trying to do anything non-trivial in GNU make macros is the most bewilderingly awful programming experience it is possible to have. They are horribly broken in every respect, from little stuff like awful syntax (whitespace is insignificant except where it's significant!) and poor error checking (detecting undefined variables? Who cares?) to the really big stuff (can't do arithmetic, despite having core functions whic…

I don't know, Make is difficult because we are used to think in procedures and not in rules; and the rule and macro syntax is a bit weird; it takes time to master it. i have a makefile/make system that uses gnu make macros; (here http://mosermichael.github.io/cstuff/all/projects/2011/06/17... . ) this saves you from repeating the same make constructs many times over, in the following example you do a static library a…

Post by GFK_of_xmaspast » Fri, Dec 18, 2015, 3:27 AM UTC

jokoon wrote: post #67

I confess that I don't even know how to write a makefile, but reading the comments here, should I understand that cmake is better than autotools? Or should I learn autotools instead of cmake? Since cmake is more adopted, isn't cmake better ?

Post by enqk » Fri, Dec 18, 2015, 11:03 AM UTC

david-given wrote: post #60

the_why_of_y wrote: post #54

Earlier quoted context omitted.

If you write make files to build everything in twice, release and debug, you're doing it wrong. The proper way to do this is to write make files so you can do "out-of-tree" builds, i.e. your build directory is outside your source directory and each build directory has its own configuration. This has the significant advantage that you can not just build 2 or 3 or however many different configurations you would think i…

Sorry, I don't follow. I am doing out-of-tree builds? The problem is that there is no way to generate multiple files from one rule. If you write: $(OBJDIR)/foo.o: src/foo.c ...you get one rule, which will build one object file. If you want to generate two object files with two different settings, you have to have two rules. $(OBJDIR1)/foo.o: src/foo.c $(OBJDIR2)/foo.o: src/foo.c There is no way round this. Target-spe…

Post by J_Darnley » Fri, Dec 18, 2015, 8:21 PM UTC

MichaelMoser123 wrote: post #84

J_Darnley wrote: post #81

Earlier quoted context omitted.

Your link is wrong and returns 404. Even https://mosermichael.github.io/ returns 404. Can you prove the correct link?

Thanks here is the correct link (can no longer edit the parent post). http://mosermichael.github.io/cstuff/ http://mosermichael.github.io/cstuff/all/projects/2011/06/17...