FindTurtle.cmake

# Find headers and libraries
FIND_PATH(
    TURTLE_INCLUDE_DIR

    NAMES
        mock.hpp

    HINTS
        $ENV{TURTLE_INCLUDE_DIR}
        ${TURTLE_INCLUDE_DIR}
        external_dependencies/turtle

    PATHS
        /usr
        /usr/local
        /home
        /opt/local

    PATH_SUFFIXES
        include
        include/turtle
)
# Set TURTLE_FOUND honoring the QUIET and REQUIRED arguments
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(
    turtle
    "Turtle was NOT found!"
    TURTLE_INCLUDE_DIR)

# Output variables
IF(TURTLE_FOUND)
    # Include dirs
    SET(TURTLE_INCLUDE_DIRS ${TURTLE_INCLUDE_DIR})
ELSE()
    MESSAGE(FATAL_ERROR "Set, please, the environmental variable TURTLE_INCLUDE_DIR to the folder, where 'mock.hpp' is located...")
ENDIF(TURTLE_FOUND)

# Add path only to the 'include' folder
set(TMP "")
string(REPLACE "/include/turtle" "/include" TMP ${TURTLE_INCLUDE_DIR})
list(APPEND TURTLE_INCLUDE_DIR ${TMP})

# Advanced options for not cluttering the cmake UIs:
MARK_AS_ADVANCED(TURTLE_INCLUDE_DIR)