compile options and subdirectories

[W. Tasin]

Jiann-Ming Su wrote:

>Ok, let's say I have the following directory structure in the kdevelop project:
>
>src/
>src/lib1dir/
>src/lib2dir/
>
>In the src/ directory, I have files that include headers from both lib1dir/
>and lib2dir/ subdirectories, so getting it to compile is pretty easy 
>by passing it "-I./lib1dir -I./lib2dir".  
>
Is it a static library or a libtool library (i.e. mostly shared lib)?

I assume we are talking about a static lib and you don't want to change 
this, because on libtool libs maybe those header files should be 
installed on ..../include-dirs and this would change the explanation a 
little bit.

>However, what if files in lib1dir/
>includes headers from lib2dir/ and vice versa?  Now, I have to pass 
>"-I./lib1dir -I./lib2dir -I../lib1dir -I../lib2dir" for the entire program
>to compile correctly.  Is there a more elegant solution?  
>
>That is, 
>"-I./lib*dir" is only good for the src/ directory, "-I./lib1dir" is only
>good for lib2dir/ subdirectory, and "-I./lib2dir" is only good for lib1dir/
>subdirectory, so passing the whole option string to the entire build
>process seems like a bad hack.  How do I customize the "-I" option for each
>individual directory?  Thanks for any help.
>
You have to patch the corrisponding Makefile.am. Search for the 
INCLUDE-directive
like

INCLUDES = $(all_includes)

and change this to
----
INCLUDES = -I../lib1dir $(all_includes)
----
(in src/lib2dir/Makefile.am)

and
---
INCLUDES = -I../lib2dir $(all_includes)
---
(in src/lib1dir/Makefile.am)

If you have the INCLUDES= directive inside the kdevelop specific part of 
the Makefile.am, so between
####### kdevelop will overwrite this part!!! (begin)##########
and
####### kdevelop will overwrite this part!!! (end)###########

you have to move this line outside of it. Save these Makefile.ams and run
"Build->Autoconf/automake" and "Build->Configure..."

After that your additional include-pathes are available.

N.B.: if somebody will help you developping your project with automake 
1.5 you will have to update to an actual version of KDevelop (more 
recent than 2.0.2).

-------
Another solution to your problem is using

#include "../lib1dir/foo1.h"
or
#include "../lib2dir/foo2.h"

inside your sources.
-------

Ciao

Walter

-- 
The KDevelop project: tasin at kdevelop.de [www.kdevelop.org]
--
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