buildtools/Cmake/Flags.cmake

   1 set(warnCFLAGS "")
   2 set(optCFLAGS "")
   3
   4 ##
   5 ## Request full debugging flags
   6 ##
   7 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g3")
   8 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g3")
   9 set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -g")
  10
  11 ##
  12 ## We need a decent support of the c++11 standard
  13 ##
  14 include(CheckCXXCompilerFlag)
  15 CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
  16 if(COMPILER_SUPPORTS_CXX11)
  17   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
  18 else()
  19   message(FATAL_ERROR
  20           "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. "
  21           "Please use a decent C++ compiler.")
  22 endif()
  23 if (CMAKE_COMPILER_IS_GNUCC)
  24   if (COMPILER_CXX_VERSION_MAJOR_MINOR STRLESS "4.7")
  25     message(FATAL_ERROR
  26             "SimGrid needs g++ version 4.7 to compile "
  27             "(c++11 support of previous versions is too limited).")
  28   endif()
  29 endif()
  30
  31 ###
  32 ### And we need C11 standard, too
  33 ###
  34 include(CheckCCompilerFlag)
  35 CHECK_C_COMPILER_FLAG("-std=gnu11" COMPILER_SUPPORTS_C11)
  36 if(COMPILER_SUPPORTS_C11)
  37   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11")
  38 else()
  39   message(FATAL_ERROR
  40           "The compiler ${CMAKE_C_COMPILER} has no C11 support. "
  41           "Please use a decent C compiler "
  42           "(note that c++11 support of ${CMAKE_CXX_COMPILER} seems ok).")
  43 endif()
  44
  45
  46 if(enable_compile_warnings)
  47   set(warnCFLAGS "-fno-common -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror ")
  48   if(CMAKE_COMPILER_IS_GNUCC)
  49     set(warnCFLAGS "${warnCFLAGS}-Wclobbered -Wno-error=clobbered ")
  50   endif()
  51
  52   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra  -Wunused -Wpointer-arith -Wchar-subscripts -Wcomment  -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror")
  53   if(CMAKE_COMPILER_IS_GNUCXX)
  54     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wclobbered -Wno-error=clobbered")
  55   endif()
  56
  57   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall") # FIXME: Q&D hack
  58
  59   set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
  60 endif()
  61
  62 if(enable_compile_optimizations)
  63   set(optCFLAGS "-O3 -funroll-loops -fno-strict-aliasing ")
  64   if(CMAKE_COMPILER_IS_GNUCC AND (NOT enable_model-checking))
  65     set(optCFLAGS "${optCFLAGS} -finline-functions ")
  66     if(WIN32)
  67       if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.7")
  68       # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
  69         set(optCFLAGS "${optCFLAGS} -flto ")
  70       endif()
  71     else()
  72       # On non-windows, 4.6 is enough for that
  73       if(LINKER_VERSION STRGREATER "2.22")
  74         set(optCFLAGS "${optCFLAGS} -flto ")
  75       endif()
  76     endif()
  77   endif()
  78 else()
  79   set(optCFLAGS "-O0 ")
  80 endif()
  81
  82 if(enable_sdt)
  83   add_definitions(-DUSE_SDT)
  84 endif()
  85
  86 if(enable_ust)
  87   add_definitions(-DUSE_UST)
  88 endif()
  89
  90 if(enable_model-checking AND enable_compile_optimizations)
  91   # Forget it, do not optimize the code (because it confuses the MC):
  92   set(optCFLAGS "-O0 ")
  93   # But you can still optimize this:
  94   foreach(s
  95       src/xbt/mmalloc/mm.c
  96       src/xbt/log.c src/xbt/xbt_log_appender_file.c
  97       src/xbt/xbt_log_layout_format.c src/xbt/xbt_log_layout_simple.c
  98       src/xbt/dict.c src/xbt/dict_elm.c src/xbt/dict_multi.c src/xbt/dict_cursor.c
  99       src/xbt/set.c src/xbt/setset.c
 100       src/xbt/dynar.c src/xbt/fifo.c src/xbt/heap.c src/xbt/swag.c
 101       src/xbt/str.c src/xbt/strbuff.c src/xbt/snprintf.c
 102       src/xbt/queue.c
 103       src/xbt/xbt_os_time.c src/xbt/xbt_os_thread.c
 104       src/xbt/sha.c
 105       src/xbt/matrix.c
 106       src/xbt/backtrace_linux.c
 107       ${MC_SRC_BASE} ${MC_SRC})
 108       set (mcCFLAGS "-O3  -funroll-loops -fno-strict-aliasing")
 109        if(CMAKE_COMPILER_IS_GNUCC)
 110          set (mcCFLAGS "${mcCFLAGS} -finline-functions")
 111       endif()
 112       set_source_files_properties(${s} PROPERTIES COMPILE_FLAGS ${mcCFLAGS})
 113   endforeach()
 114 endif()
 115
 116 if(APPLE AND COMPILER_C_VERSION_MAJOR_MINOR MATCHES "4.6")
 117   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
 118   set(optCFLAGS "-O0 ")
 119 endif()
 120
 121 if(NOT enable_debug)
 122   set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
 123   set(CMAKE_CXX_FLAGS "-DNDEBUG ${CMAKE_CXX_FLAGS}")
 124 endif()
 125
 126 if(enable_msg_deprecated)
 127   set(CMAKE_C_FLAGS "-DMSG_USE_DEPRECATED ${CMAKE_C_FLAGS}")
 128 endif()
 129
 130 set(CMAKE_C_FLAGS "${optCFLAGS} ${warnCFLAGS} ${CMAKE_C_FLAGS}")
 131
 132 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
 133
 134 # Try to make Mac a bit more complient to open source standards
 135 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
 136   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=700 -D_DARWIN_C_SOURCE")
 137 endif()
 138
 139 set(TESH_OPTION "")
 140 if(enable_coverage)
 141   find_program(GCOV_PATH gcov)
 142   if(GCOV_PATH)
 143     set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
 144     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
 145     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
 146     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
 147     set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
 148     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
 149     set(TESH_OPTION --enable-coverage)
 150     add_definitions(-fprofile-arcs -ftest-coverage)
 151   endif()
 152 endif()
 153
 154 if(NOT $ENV{CFLAGS} STREQUAL "")
 155   message(STATUS "Add CFLAGS: \"$ENV{CFLAGS}\" to CMAKE_C_FLAGS")
 156   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} $ENV{CFLAGS}")
 157 endif()
 158
 159 if(NOT $ENV{CXXFLAGS} STREQUAL "")
 160   message(STATUS "Add CXXFLAGS: \"$ENV{CXXFLAGS}\" to CMAKE_CXX_FLAGS")
 161   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} $ENV{CXXFLAGS}")
 162 endif()
 163
 164 if(NOT $ENV{LDFLAGS} STREQUAL "")
 165   message(STATUS "Add LDFLAGS: \"$ENV{LDFLAGS}\" to CMAKE_C_LINK_FLAGS")
 166   set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} $ENV{LDFLAGS}")
 167 endif()