CMake: make the project compatible with building as a subproject

[libftdi] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 24da84d..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 +9,7 @@ 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)
@@ -42,17 +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)
@@ -123,7 +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/")
@@ -138,32 +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 )
   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      ${CMAKE_INSTALL_PREFIX})
@@ -177,9 +176,9 @@ if(${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)