[CMake] CMake Library Issues

[Nick Ogden]

Hi there,

I have a problem with using CMake to compile a library that I'm trying to use 
in an application that I'm writing.

I have the following directory structure:

src/
  |---- CMakeLists.txt (1)
  |---- app/
  |       |---- CMakeLists.txt (2)
  |       |---- (app source and headers)
  |---- libmba/
  |       |---- CMakeLists.txt (3)
  |       |---- mba
  |       |        |---- (libmba headers)
  |       |---- (libmba source)

The problem occurs when compiling the library. Make states that it cannot find 
a header file for the library, which is definitely in the 'mba' directory. The 
problem seems to be that the library uses '#include <mba/XXXX>' style 
statements in the header files and as such expects the search path to start in 
the 'libmba' directory. Since some header files include other header files, make 
then seems to look for the directory 'src/libmba/mba/mba' which of course does 
not exist. Is there any way of preventing this behavior so that the search 
will always start in the 'libmba' directory?

The error as reported by make and the relevant CMakeLists.txt file is as 
follows.

Error:

Scanning dependencies of target mba
[  3%] Building C object libmba/CMakeFiles/mba.dir/allocator.c.o
In file included from /.../src/libmba/allocator.c:29:
/.../src/libmba/mba/suba.h:24:27: error: mba/allocator.h: No such file or 
directory
make[2]: *** [libmba/CMakeFiles/mba.dir/allocator.c.o] Error 1
make[1]: *** [libmba/CMakeFiles/mba.dir/all] Error 2
make: *** [all] Error 2
--------------------------------------------------------------------------------------------------------------

CMakeLists.txt (3):

set(mba_SRC	allocator.c
			bitset.c
			cfg.c
			csv.c
			daemon.c
			dbug.c
			diff.c
			eval.c
			hashmap.c
			hexdump.c
			linkedlist.c
			misc.c
			msgno.c
			path.c
			pool.c
			shellout.c
			stack.c
			suba.c
			svcond.c
			svsem.c
			text.c
			time.c
			varray.c)
			
include_directories(${SERVER_SOURCE_DIR}/libmba)

add_library(mba STATIC ${mba_SRC})
--------------------------------------------------------------------------------------------------------------

Any help would be greatly appreciated.

Kind Regards
-- 
Nick Ogden

Email: nick at nickogden.net      PGP: 2598FFE4
Web:   www.nickogden.net

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