CMake: make the project compatible with building as a subproject

[libftdi] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9d7f9b6..6284c8d 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,7 @@
 cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
 
+message(STATUS "CMake version: ${CMAKE_VERSION}")
+
 # Project
 project(libftdi1 C)
 set(MAJOR_VERSION 1)
@@ -7,7 +9,24 @@ set(MINOR_VERSION 5)
 set(PACKAGE libftdi1)
 set(VERSION_STRING ${MAJOR_VERSION}.${MINOR_VERSION})
 set(VERSION ${VERSION_STRING})
-set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+
+# Support new if() IN_LIST operator
+if(POLICY CMP0057)
+  cmake_policy(SET CMP0057 NEW)
+endif()
+
+# Included scripts do automatic cmake_policy() PUSH and POP
+if(POLICY CMP0011)
+  cmake_policy(SET CMP0011 NEW)
+endif()
+
+# Target link properties INTERFACE_LINK_OPTIONS, INTERFACE_LINK_DIRECTORIES
+# and INTERFACE_LINK_DEPENDS are now transitive over private dependencies
+# of static libraries
+if(POLICY CMP0099)
+  cmake_policy(SET CMP0099 NEW)
+endif()
 
 # CMake
 if("${CMAKE_BUILD_TYPE}" STREQUAL "")
@@ -25,17 +44,9 @@ if(${CMAKE_BUILD_TYPE} STREQUAL Debug)
   add_definitions(-DDEBUG)
 endif(${CMAKE_BUILD_TYPE} STREQUAL Debug)
 
-# find libusb
-find_package( PkgConfig )
-if (PkgConfig_FOUND)
-  pkg_check_modules( LIBUSB libusb-1.0 )
-  if (LIBUSB_FOUND)
-    include_directories ( ${LIBUSB_INCLUDE_DIRS} )
-  else()
-    find_package ( USB1 REQUIRED )
-    include_directories ( ${LIBUSB_INCLUDE_DIR} )
-  endif()
-endif()
+# Find libusb
+find_package ( LibUSB REQUIRED )
+include_directories ( ${LIBUSB_INCLUDE_DIR} )
 
 # Find Boost
 if (FTDIPP OR BUILD_TESTS)
@@ -106,7 +117,7 @@ if ( WIN32 )
   set ( CPACK_NSIS_MODIFY_PATH             ON )
 endif ()
 
-set(CPACK_RESOURCE_FILE_LICENSE        ${CMAKE_SOURCE_DIR}/LICENSE)
+set(CPACK_RESOURCE_FILE_LICENSE        ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE)
 
 set(CPACK_SOURCE_GENERATOR             TGZ)
 set(CPACK_SOURCE_IGNORE_FILES          "\\\\.git;~$;build/")
@@ -121,47 +132,37 @@ endif ()
 set(ARCHIVE_NAME ${CMAKE_PROJECT_NAME}-${VERSION_STRING})
 add_custom_target(dist
     COMMAND git archive --prefix=${ARCHIVE_NAME}/ HEAD
-            | bzip2 > ${CMAKE_BINARY_DIR}/${ARCHIVE_NAME}.tar.bz2
-    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
+      | bzip2 > ${PROJECT_BINARY_DIR}/${ARCHIVE_NAME}.tar.bz2
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+
+add_subdirectory(src)
+add_subdirectory(packages)
 
 if ( DOCUMENTATION )
-  find_package ( Doxygen REQUIRED)
-
-  # Copy doxy.config.in
-  set(top_srcdir ${CMAKE_SOURCE_DIR})
-  configure_file(${CMAKE_SOURCE_DIR}/doc/Doxyfile.in ${CMAKE_BINARY_DIR}/Doxyfile )
-  configure_file(${CMAKE_SOURCE_DIR}/doc/Doxyfile.xml.in ${CMAKE_BINARY_DIR}/Doxyfile.xml )
-
-  # Run doxygen
-  add_custom_command(
-    OUTPUT ${CMAKE_BINARY_DIR}/doc/html/index.html
-    COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/doc
-    COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
-    DEPENDS ${c_headers};${c_sources};${cpp_sources};${cpp_headers}
-  )
-
-  add_custom_target(docs ALL DEPENDS ${CMAKE_BINARY_DIR}/doc/html/index.html)
-endif ()
+  add_subdirectory(doc)
+endif ( DOCUMENTATION )
 
-add_subdirectory(src)
 if ( FTDIPP )
   project(libftdi1 C CXX)
   add_subdirectory(ftdipp)
-endif ()
+endif ( FTDIPP )
+
 if ( PYTHON_BINDINGS )
-add_subdirectory(python)
-endif ()
+  add_subdirectory(python)
+endif ( PYTHON_BINDINGS )
+
 if ( FTDI_EEPROM )
   add_subdirectory(ftdi_eeprom)
-endif ()
+endif ( FTDI_EEPROM )
+
 if ( EXAMPLES )
   add_subdirectory(examples)
-endif ()
-add_subdirectory(packages)
+endif ( EXAMPLES )
+
 if ( BUILD_TESTS )
   project(libftdi1 C CXX)
   add_subdirectory(test)
-endif ()
+endif ( BUILD_TESTS )
 
 # PkgConfig
 set(prefix      ${CMAKE_INSTALL_PREFIX})
@@ -175,9 +176,9 @@ if(${WIN32})
   set(libdir      ${CMAKE_INSTALL_PREFIX}/bin)
 endif(${WIN32})
 
-configure_file(${CMAKE_SOURCE_DIR}/libftdi1.pc.in ${CMAKE_BINARY_DIR}/libftdi1.pc @ONLY)
-configure_file(${CMAKE_SOURCE_DIR}/libftdipp1.pc.in ${CMAKE_BINARY_DIR}/libftdipp1.pc @ONLY)
-install(FILES ${CMAKE_BINARY_DIR}/libftdi1.pc ${CMAKE_BINARY_DIR}/libftdipp1.pc
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libftdi1.pc.in ${CMAKE_CURRENT_BINARY_DIR}/libftdi1.pc @ONLY)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libftdipp1.pc.in ${CMAKE_CURRENT_BINARY_DIR}/libftdipp1.pc @ONLY)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libftdi1.pc ${CMAKE_CURRENT_BINARY_DIR}/libftdipp1.pc
         DESTINATION lib${LIB_SUFFIX}/pkgconfig)
 
 if (UNIX OR MINGW)