// main.c
#include <stdio.h>
#include "config.h"

int main()
{
    printf("Hello, world!n");
    printf("image = "%s".n", DATADIR "/tux.png");
    return 0;
}

#cmakedefine    DATADIR "@DATADIR@"

CMAKE_MINIMUM_REQUIRED(VERSION 3.0)

PROJECT(sample)
SET(sample_VERSION_MAJOR 0)
SET(sample_VERSION_MINOR 1)

SET(DATADIR "${CMAKE_INSTALL_PREFIX}/share/${PROJECT_NAME}")
CONFIGURE_FILE("${CMAKE_SOURCE_DIR}/config.h.in" "${CMAKE_BINARY_DIR}/config.h")
INCLUDE_DIRECTORIES("${CMAKE_BINARY_DIR}")

ADD_EXECUTABLE(sample main.c)
INSTALL(TARGETS sample DESTINATION bin)
INSTALL(FILES tux.png DESTINATION "share/${PROJECT_NAME}")

#define DATADIR "/usr/share/sample"

dh_make --createorig -s
dpkg-buildpackage -b

$ cat /var/lib/dpkg/info/file.list
/.
/usr
/usr/share
/usr/share/bug
/usr/share/bug/file
/usr/share/bug/file/presubj
/usr/share/bug/file/control
/usr/share/doc
/usr/share/doc/file
/usr/share/doc/file/README.Debian
/usr/share/doc/file/copyright
/usr/share/doc/file/README.gz
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/file.1.gz
/usr/bin
/usr/bin/file
/usr/share/doc/file/changelog.Debian.gz