[CMake] Package found - passing _INCLUDE_DIRS to include_directories() and _LIBRARIES to target_link_libraries()

[Michael Darling]

http://www.cmake.org/Wiki/CMake:How_To_Find_Libraries#How_package_finding_works

seems to indicate if <PACKAGE-NAME>_FOUND is found, the
<PACKAGE-NAME>_INCLUDE_DIRS is passed to the include_directories() command,
and <PACKAGE-NAME>_LIBRARIES is passed to target_link_libraries()

Why is the reduced-case code below calling g++ without including
"-I~/codeTestPackages/lib", causing a "app/app.cpp:1:17: fatal error:
lib.h: No such file or directory" ?

I'm on CMake v3.0.0.  Also tried CMake v3.0.20140718-g36a81 (git source.)

All the source is below, and attached as a .tar.gz.


*### CMakeLists.txt ###*

cmake_minimum_required(VERSION 3.0)
project(codeTestPackages)
set(CMAKE_VERBOSE_MAKEFILE on)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ~/codeTestPackages/findModules)
add_subdirectory(lib)
add_subdirectory(app)

*### findModules/Findlib.cmake ###*

IF(NOT lib_FOUND)
   set(lib_FOUND "yes")
   message("lib_FOUND is ${lib_FOUND}")
   set(lib_INCLUDE_DIRS ~/codeTestPackages/lib)
   set(lib_LIBRARIES lib)
ENDIF(NOT lib_FOUND)

*### lib/CMakeListst.txt ###*

include_directories(~/codeTestPackages/lib)
add_library(lib lib.cpp)

*### lib/lib.h ###*

#ifndef __LIB__
#define __LIB__
namespace LIB {
unsigned long libFunc(unsigned long inValue);
}
#endif

*### lib/lib.cpp ###*

#include <lib.h>
namespace LIB {
unsigned long libFunc(unsigned long inValue) {
   return inValue+1;
}
}

*### app/CMakeLists.txt ###*

find_package(lib REQUIRED)
add_executable(app app.cpp)

*### app/app.cpp ###*

#include <lib.h>
using namespace LIB;

int main() {
   unsigned long x = 1;
   unsigned long y = libFunc(x);
}
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