Thread: cmake - using header files in higher directories

Hi,

Say I have a directory structure:
lib/dbg/debug.h
lib/other/other.h
lib/other/other.c
tools/program.c

And other.c has: #include "lib/dbg/debug.h"

How do I setup the CMakeFiles.txt files in each directory, so the executable "program" (from program.c) is created.

Currently I get the error:

lib/other/other.h:33: fatal error: lib/dbg/debug.h: No such file or directory

Thanks in advance.

Just a shot in the dark, but you might have to specify that file relative to other.h, as in

Code:

(other.h)

#include "../dbg/debug.h"
...

so as to appease the preprocessor.

Ok, that works, but doesn't solve my next problem:

I'm wanting to use cmake to create a static library of my project.
The project (libspam) has the directory structure:
CMakeLists.txt
common/CMakeLists.txt
common/test.h
common/test.c
other/CMakeLists.txt
other/test2.c
other/test2.h

Where the root path CMakeLists.txt is:

Code:

project(LIBSPAM)

add_subdirectory(common)
add_subdirectory(other)

# create static lib
add_library(spam STATIC common/test.c other/test2.c)
target_link_libraries(spam usb-1.0)

install (TARGETS spam DESTINATION lib)
install(FILES common/test.c other/test2.c DESTINATION include)

And common/CMakeLists.txt is:

Code:

cmake_minimum_required(VERSION 2.8)
add_library(common test)

And other/CMakeLists.txt is:

Code:

cmake_minimum_required(VERSION 2.8)
add_library(other test2)

While this works, the header file include paths are:

#include "../common/test.h"
#include "../other/test2.h"

So if I installed these header files, it may overwrite some similar named files, and the above include paths are wrong for other programs that use these header files. How can I set the include paths to:

#include "libspam/common/test.h"
#include "libspam/other/test2.h"

And get cmake to install these headers in /usr/local/lib/libspam/