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# - try to find MyPackage library
#
# Example-FindMyPackage.cmake
#
# This example is for a fairly in-depth library that has four
# internal dependencies as well as an external dependency.
# The dependency tree is described below, in graphviz/dot format, and you
# can remove the #'s from the following lines and run it through graphviz,
# with this command: dot dependencies.dot -O -Tpdf
#
# --- start of dependencies.dot ---
# digraph {
# BLAS;
# subgraph cluster_mypackage {
# label = "Components that are part of MyPackage";
# libmypackagecore -> libmypackagea;
# libmypackagea -> libmypackageb;
# libmypackageb -> libmypackagec;
# libmypackagec -> BLAS;
# }
# }
# --- end of dependencies.dot ---
#
# Because our imaginary component "c" requires BLAS and BLAS needs some
# linker flags, MYPACKAGE_..._LINKER_FLAGS joins the usual group of
# _LIBRARY/_LIBRARIES and _INCLUDE_DIR/_INCLUDE_DIRS variables. If
# you don't use a library like that, you don't need to include the
# lines dealing with that group of variables.
#
# Most library aren't nearly this complex - but some are, and many
# have some parts of the complexity handled here.
#
# Start of what would be a minimal module documentation block:
#
# Cache Variables: (not for direct use in CMakeLists.txt)
# MYPACKAGE_ROOT
# MYPACKAGE_LIBRARY
# MYPACKAGE_INCLUDE_DIR
# MYPACKAGE_a_LIBRARY
# MYPACKAGE_a_INCLUDE_DIR
# MYPACKAGE_b_LIBRARY
# MYPACKAGE_b_INCLUDE_DIR
# MYPACKAGE_c_LIBRARY
# MYPACKAGE_c_INCLUDE_DIR
#
# Non-cache variables you might use in your CMakeLists.txt:
# MYPACKAGE_FOUND
#
# MYPACKAGE_LIBRARIES
# MYPACKAGE_INCLUDE_DIRS
# MYPACKAGE_LINKER_FLAGS
#
# MYPACKAGE_a_LIBRARIES
# MYPACKAGE_a_INCLUDE_DIRS
# MYPACKAGE_a_LINKER_FLAGS
#
# MYPACKAGE_b_LIBRARIES
# MYPACKAGE_b_INCLUDE_DIRS
# MYPACKAGE_b_LINKER_FLAGS
#
# MYPACKAGE_c_LIBRARIES
# MYPACKAGE_c_INCLUDE_DIRS
# MYPACKAGE_c_LINKER_FLAGS
#
# Use this module this way:
# find_package(MyPackage)
# include_directories(${MYPACKAGE_INCLUDE_DIRS})
# add_executable(myapp ${SOURCES})
# target_link_libraries(myapp ${MYPACKAGE_LIBRARIES})
# set_property(TARGET myapp PROPERTY LINK_FLAGS ${MYPACKAGE_LINKER_FLAGS})
#
# Requires these CMake modules:
# FindPackageHandleStandardArgs (CMake standard module)
#
# Original Author:
# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
# http://academic.cleardefinition.com
# Iowa State University HCI Graduate Program/VRAC
set(MYPACKAGE_ROOT
"${MYPACKAGE_ROOT}"
CACHE
PATH
"Root directory to look in")
find_library(MYPACKAGE_LIBRARY
NAMES
mypackagecore
PATHS
"${MYPACKAGE_ROOT}"
PATH_SUFFIXES
lib)
find_path(MYPACKAGE_INCLUDE_DIR
NAMES
mypackage/mypackage.h
PATHS
"${MYPACKAGE_ROOT}"
PATH_SUFFIXES
include)
# Assuming that the components are named libmypackagea, libmypackageb, etc
foreach(lib a b c)
find_library(MYPACKAGE_${lib}_LIBRARY
NAMES
mypackage${lib}
PATHS
"${MYPACKAGE_ROOT}"
PATH_SUFFIXES
lib)
find_path(MYPACKAGE_${lib}_INCLUDE_DIR
NAMES
mypackage/${lib}/${lib}.h
PATHS
"${MYPACKAGE_ROOT}"
PATH_SUFFIXES
include)
endforeach()
# Searching for dependencies here - always quiet.
# see /usr/share/cmake-2.x/Modules/FindBLAS.cmake for the variables this will define
if(NOT BLAS_FOUND)
find_package(BLAS QUIETLY)
endif()
# handle the QUIETLY and REQUIRED arguments and set xxx_FOUND to TRUE if
# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(MyPackage
DEFAULT_MSG
MYPACKAGE_LIBRARY
MYPACKAGE_INCLUDE_DIR
MYPACKAGE_a_LIBRARY
MYPACKAGE_a_INCLUDE_DIR
MYPACKAGE_b_LIBRARY
MYPACKAGE_b_INCLUDE_DIR
MYPACKAGE_c_LIBRARY
MYPACKAGE_c_INCLUDE_DIR
BLAS_FOUND)
if(MYPACKAGE_FOUND)
# Set variables containing libraries and their dependencies
# Always use the plural form for the variables defined by other find modules:
# they might have dependencies too!
set(MYPACKAGE_c_LIBRARIES ${MYPACKAGE_c_LIBRARY} ${BLAS_LIBRARIES})
set(MYPACKAGE_c_INCLUDE_DIRS ${MYPACKAGE_c_INCLUDE_DIR}) # No include dir for BLAS?
set(MYPACKAGE_c_LINKER_FLAGS ${BLAS_LINKER_FLAGS})
set(MYPACKAGE_b_LIBRARIES
${MYPACKAGE_b_LIBRARY}
${MYPACKAGE_c_LIBRARIES})
set(MYPACKAGE_b_INCLUDE_DIRS
${MYPACKAGE_b_INCLUDE_DIR}
${MYPACKAGE_c_INCLUDE_DIRS})
set(MYPACKAGE_b_LINKER_FLAGS ${MYPACKAGE_c_LINKER_FLAGS})
set(MYPACKAGE_a_LIBRARIES
${MYPACKAGE_a_LIBRARY}
${MYPACKAGE_b_LIBRARIES})
set(MYPACKAGE_a_INCLUDE_DIRS
${MYPACKAGE_a_INCLUDE_DIR}
${MYPACKAGE_b_INCLUDE_DIRS})
set(MYPACKAGE_a_LINKER_FLAGS ${MYPACKAGE_b_LINKER_FLAGS})
set(MYPACKAGE_LIBRARIES ${MYPACKAGE_LIBRARY} ${MYPACKAGE_a_LIBRARIES})
set(MYPACKAGE_INCLUDE_DIRS
${MYPACKAGE_INCLUDE_DIR}
${MYPACKAGE_a_INCLUDE_DIRS})
set(MYPACKAGE_LINKER_FLAGS ${MYPACKAGE_a_LINKER_FLAGS})
endif()
mark_as_advanced(MYPACKAGE_LIBRARY
MYPACKAGE_INCLUDE_DIR
MYPACKAGE_a_LIBRARY
MYPACKAGE_a_INCLUDE_DIR
MYPACKAGE_b_LIBRARY
MYPACKAGE_b_INCLUDE_DIR
MYPACKAGE_c_LIBRARY
MYPACKAGE_c_INCLUDE_DIR)
if(MYPACKAGE_FOUND)
mark_as_advanced(MYPACKAGE_ROOT)
endif()
# End of Example-FindMyPackage.cmake
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