CMakeLists.txt

   1 cmake_minimum_required(VERSION 2.6)
   2 project(libam7xxx C)
   3
   4 include (GNUInstallDirs)
   5
   6 set(PROJECT_DESCRIPTION
   7   "Communication library for Actions Micro AM7XXX based USB projectors and DPFs")
   8
   9 set(PROJECT_VER_MAJOR 0)
  10 set(PROJECT_VER_MINOR 1)
  11 set(PROJECT_VER_PATCH 7)
  12 set(PROJECT_VER_EXTRA "")
  13 set(PROJECT_VER
  14   "${PROJECT_VER_MAJOR}.${PROJECT_VER_MINOR}.${PROJECT_VER_PATCH}${PROJECT_VER_EXTRA}")
  15 set(PROJECT_APIVER
  16   "${PROJECT_VER_MAJOR}.${PROJECT_VER_MINOR}")
  17
  18 set(CMAKE_MODULE_PATH
  19   ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules/")
  20
  21 OPTION(STRICT_COMPILATION_CHECKS "Enable stricter compilation checks" OFF)
  22
  23 include (MaintenanceTools)
  24
  25 set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
  26 set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR}/lib)
  27 set(DOC_OUTPUT_PATH ${CMAKE_BINARY_DIR}/doc)
  28
  29 # Because cmake cannot deal sanely with multiline strings. SRSLY?
  30 # See http://www.vtkedge.org/Bug/view.php?id=8362&nbn=8
  31 macro(add_flags var)
  32   string(REPLACE ";" " " _flags "${ARGN}")
  33   set(${var} "${${var}} ${_flags}")
  34 endmacro(add_flags)
  35
  36 string(REGEX MATCH "clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER}")
  37
  38 if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
  39   add_definitions(-Wall)
  40
  41   # let CFLAGS env override this
  42   if(CMAKE_C_FLAGS STREQUAL "")
  43     set(CMAKE_C_FLAGS "-std=c99 -pedantic -Wall -Wextra")
  44   endif()
  45
  46   add_flags(CMAKE_C_FLAGS
  47     -fvisibility=hidden
  48     -fno-common
  49     -Wall
  50     -Wextra
  51     -Wformat=2
  52     -Winit-self
  53     -Winline
  54     -Wpacked
  55     -Wpointer-arith
  56     -Wlarger-than-65500
  57     -Wmissing-declarations
  58     -Wmissing-format-attribute
  59     -Wmissing-noreturn
  60     -Wmissing-prototypes
  61     -Wnested-externs
  62     -Wold-style-definition
  63     -Wredundant-decls
  64     -Wsign-compare
  65     -Wstrict-aliasing=2
  66     -Wstrict-prototypes
  67     -Wswitch-enum
  68     -Wundef
  69     -Wunreachable-code
  70     -Wwrite-strings)
  71
  72   include(CheckCCompilerFlag)
  73   CHECK_C_COMPILER_FLAG(-fstack-protector-strong COMPILER_SUPPORTS_STACK_PROTECTOR_STRONG)
  74   if (COMPILER_SUPPORTS_STACK_PROTECTOR_STRONG)
  75     add_flags(CMAKE_C_FLAGS -fstack-protector-strong)
  76   else()
  77     add_flags(CMAKE_C_FLAGS -fstack-protector)
  78   endif()
  79
  80   add_flags(DEBUG_FLAGS
  81     -ggdb)
  82
  83   add_flags(RELEASE_FLAGS
  84     -Wp,-D_FORTIFY_SOURCE=2)
  85
  86   if (STRICT_COMPILATION_CHECKS)
  87     add_flags(STRICT_FLAGS
  88       -Werror
  89       # sign conversion warnings can be very noisy for a very little gain
  90       #-Wsign-conversion
  91       # NOTE: Vanilla libusb-1.0.8 can't live with -pedantic-errors
  92       -pedantic-errors)
  93
  94   endif()
  95 endif()
  96
  97 if (CMAKE_COMPILER_IS_GNUCC)
  98   add_flags(CMAKE_C_FLAGS
  99     -Wunsafe-loop-optimizations
 100     --param=ssp-buffer-size=4)
 101
 102   if (STRICT_COMPILATION_CHECKS)
 103     add_flags(STRICT_FLAGS
 104       # NOTE: GCC >= 4.6 is needed for -Wunused-but-set-variable
 105       -Wunused-but-set-variable)
 106   endif()
 107 endif()
 108
 109 if (CMAKE_COMPILER_IS_CLANG)
 110   if (STRICT_COMPILATION_CHECKS)
 111     add_flags(STRICT_FLAGS
 112       -Wshorten-64-to-32)
 113   endif()
 114 endif()
 115
 116 set(CMAKE_C_FLAGS_DEBUG "-O0 -DDEBUG=1 ${DEBUG_FLAGS} ${STRICT_FLAGS}")
 117 set(CMAKE_C_FLAGS_RELEASE "-O2 ${RELEASE_FLAGS} ${STRICT_FLAGS}")
 118 set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 ${RELEASE_FLAGS} ${DEBUG_FLAGS} ${STRICT_FLAGS}")
 119
 120 # Add library project
 121 add_subdirectory(src)
 122 add_subdirectory(examples)
 123 add_subdirectory(doc)