cmake/common.cmake

   1 ###########################################################################
   2 # Copyright 2015, 2016, 2017 IoT.bzh
   3 #
   4 # author: Fulup Ar Foll <fulup@iot.bzh>
   5 # contrib: Romain Forlot <romain.forlot@iot.bzh>
   6 #
   7 # Licensed under the Apache License, Version 2.0 (the "License");
   8 # you may not use this file except in compliance with the License.
   9 # You may obtain a copy of the License at
  10 #
  11 #     http://www.apache.org/licenses/LICENSE-2.0
  12 #
  13 # Unless required by applicable law or agreed to in writing, software
  14 # distributed under the License is distributed on an "AS IS" BASIS,
  15 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 # See the License for the specific language governing permissions and
  17 # limitations under the License.
  18 ###########################################################################
  19
  20
  21 #--------------------------------------------------------------------------
  22 #  WARNING:
  23 #     Do not change this cmake template
  24 #     Customise your preferences in "./etc/config.cmake"
  25 #--------------------------------------------------------------------------
  26
  27 include(${PROJECT_APP_TEMPLATES_DIR}/cmake/macros.cmake)
  28 include(${PROJECT_APP_TEMPLATES_DIR}/cmake/variables.cmake)
  29 include(${PROJECT_APP_TEMPLATES_DIR}/cmake/extra_targets.cmake)
  30
  31 # Check GCC minimal version
  32 if (gcc_minimal_version)
  33                 message (STATUS "${Blue}-- Check gcc_minimal_version (found gcc version ${CMAKE_C_COMPILER_VERSION})  (found g++ version ${CMAKE_CXX_COMPILER_VERSION})${ColourReset}")
  34         if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${gcc_minimal_version} OR CMAKE_C_COMPILER_VERSION VERSION_LESS ${gcc_minimal_version})
  35                 message(FATAL_ERROR "${Red}**** FATAL: Require at least gcc-${gcc_minimal_version} please set CMAKE_C[XX]_COMPILER")
  36         endif()
  37 endif(gcc_minimal_version)
  38
  39 # Check Kernel minimal version
  40 if (kernel_minimal_version)
  41         message (STATUS "${Blue}-- Check kernel_minimal_version (found kernel version ${CMAKE_SYSTEM_VERSION})${ColourReset}")
  42         if (CMAKE_SYSTEM_VERSION VERSION_LESS ${kernel_minimal_version})
  43         message(FATAL_ERROR "${Red}**** FATAL: Require at least ${kernel_minimal_version} please use a recent kernel.")
  44 endif()
  45 endif(kernel_minimal_version)
  46
  47 INCLUDE(FindPkgConfig)
  48 INCLUDE(CheckIncludeFiles)
  49 INCLUDE(CheckLibraryExists)
  50 INCLUDE(GNUInstallDirs)
  51
  52 # Default compilation options
  53 ############################################################################
  54 link_libraries(-Wl,--as-needed -Wl,--gc-sections)
  55 add_compile_options(-Wall -Wextra -Wconversion)
  56 add_compile_options(-Wno-unused-parameter) # frankly not using a parameter does it care?
  57 add_compile_options(-Wno-sign-compare -Wno-sign-conversion)
  58 add_compile_options(-Werror=maybe-uninitialized)
  59 add_compile_options(-Werror=implicit-function-declaration)
  60 add_compile_options(-ffunction-sections -fdata-sections)
  61 add_compile_options(-fPIC)
  62 add_compile_options(-g)
  63
  64 set(CMAKE_C_FLAGS_PROFILING   "-g -O2 -pg -Wp,-U_FORTIFY_SOURCE" CACHE STRING "Flags for profiling")
  65 set(CMAKE_C_FLAGS_DEBUG       "-g -O2 -ggdb -Wp,-U_FORTIFY_SOURCE" CACHE STRING "Flags for debugging")
  66 set(CMAKE_C_FLAGS_RELEASE     "-O2" CACHE STRING "Flags for releasing")
  67 set(CMAKE_C_FLAGS_CCOV        "-g -O2 --coverage" CACHE STRING "Flags for coverage test")
  68
  69 set(CMAKE_CXX_FLAGS_PROFILING    "-g -O0 -pg -Wp,-U_FORTIFY_SOURCE")
  70 set(CMAKE_CXX_FLAGS_DEBUG        "-g -O0 -ggdb -Wp,-U_FORTIFY_SOURCE")
  71 set(CMAKE_CXX_FLAGS_RELEASE      "-g -O2")
  72 set(CMAKE_CXX_FLAGS_CCOV "-g -O2 --coverage")
  73
  74 # Env variable overload default
  75 if(DEFINED ENV{INSTALL_PREFIX})
  76         set (INSTALL_PREFIX $ENV{INSTALL_PREFIX})
  77 else()
  78         set(INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/Install" CACHE PATH "The path where to install")
  79 endif()
  80 set(CMAKE_INSTALL_PREFIX ${INSTALL_PREFIX} CACHE STRING "Installation Prefix")
  81
  82 # (BUG!!!) as PKG_CONFIG_PATH does not work [should be en env variable]
  83 set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH ON CACHE BOOLEAN "Flag for using prefix path")
  84
  85 # Loop on required package and add options
  86 foreach (PKG_CONFIG ${PKG_REQUIRED_LIST})
  87         string(REGEX REPLACE "[<>]?=.*$" "" XPREFIX ${PKG_CONFIG})
  88         PKG_CHECK_MODULES(${XPREFIX} REQUIRED ${PKG_CONFIG})
  89
  90         INCLUDE_DIRECTORIES(${${XPREFIX}_INCLUDE_DIRS})
  91         list (APPEND link_libraries ${${XPREFIX}_LDFLAGS})
  92         add_compile_options (${${XPREFIX}_CFLAGS})
  93 endforeach(PKG_CONFIG)
  94
  95 # Optional LibEfence Malloc debug library
  96 IF(CMAKE_BUILD_TYPE MATCHES DEBUG)
  97 CHECK_LIBRARY_EXISTS(efence malloc "" HAVE_LIBEFENCE)
  98 IF(HAVE_LIBEFENCE)
  99         MESSAGE(STATUS "Linking with ElectricFence for debugging purposes...")
 100         SET(libefence_LIBRARIES "-lefence")
 101         list (APPEND link_libraries ${libefence_LIBRARIES})
 102 ENDIF(HAVE_LIBEFENCE)
 103 ENDIF(CMAKE_BUILD_TYPE MATCHES DEBUG)
 104
 105 # set default include directories
 106 INCLUDE_DIRECTORIES(${EXTRA_INCLUDE_DIRS})
 107
 108 # Default Linkflag
 109 if(NOT BINDINGS_LINK_FLAG)
 110         set(BINDINGS_LINK_FLAG "-Wl,--version-script=${PKG_TEMPLATE_PREFIX}/cmake/export.map")
 111 endif()