buildtools/Cmake/Flags.cmake

   1 set(warnCFLAGS "")
   2 set(optCFLAGS "")
   3
   4 ##
   5 ## Request full debugging flags
   6 ##
   7 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -g3")
   8 set(CMAKE_CXX_FLAGS "${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 ${CMAKE_CXX_COMPILER} has no C++11 support. "
  21           "Please use a decent C++ compiler.")
  22 endif()
  23 if (CMAKE_COMPILER_IS_GNUCC)
  24   if (COMPILER_C_VERSION_MAJOR_MINOR STRLESS "4.7")
  25     message(FATAL_ERROR
  26             "SimGrid needs g++ version 4.7 to compile "
  27             "(c++11 support of previous versions is too limited).")
  28   endif()
  29 endif()
  30
  31
  32 if(enable_compile_warnings)
  33   set(warnCFLAGS "-fno-common -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror ")
  34   if(CMAKE_COMPILER_IS_GNUCC)
  35     set(warnCFLAGS "${warnCFLAGS}-Wclobbered -Wno-error=clobbered ")
  36   endif()
  37
  38   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra  -Wunused -Wpointer-arith -Wchar-subscripts -Wcomment  -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror")
  39   if(CMAKE_COMPILER_IS_GNUCXX)
  40     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wclobbered -Wno-error=clobbered")
  41   endif()
  42
  43   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall") # FIXME: Q&D hack
  44
  45   set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
  46 endif()
  47
  48 if(enable_compile_optimizations)
  49   set(optCFLAGS "-O3 -funroll-loops -fno-strict-aliasing ")
  50   if(CMAKE_COMPILER_IS_GNUCC AND (NOT enable_model-checking))
  51     set(optCFLAGS "${optCFLAGS} -finline-functions ")
  52     if(WIN32)
  53       if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.7")
  54       # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
  55         set(optCFLAGS "${optCFLAGS} -flto ")
  56       endif()
  57     else()
  58       # On non-windows, 4.6 is enough for that
  59       if(LINKER_VERSION STRGREATER "2.22")
  60         set(optCFLAGS "${optCFLAGS} -flto ")
  61       endif()
  62     endif()
  63   endif()
  64 else()
  65   set(optCFLAGS "-O0 ")
  66 endif()
  67
  68 if(enable_sdt)
  69   add_definitions(-DUSE_SDT)
  70 endif()
  71
  72 if(enable_ust)
  73   add_definitions(-DUSE_UST)
  74 endif()
  75
  76 if(enable_model-checking AND enable_compile_optimizations)
  77   # Forget it, do not optimize the code (because it confuses the MC):
  78   set(optCFLAGS "-O0 ")
  79   # But you can still optimize this:
  80   foreach(s
  81       src/xbt/mmalloc/mm.c
  82       src/xbt/log.c src/xbt/xbt_log_appender_file.c
  83       src/xbt/xbt_log_layout_format.c src/xbt/xbt_log_layout_simple.c
  84       src/xbt/dict.c src/xbt/dict_elm.c src/xbt/dict_multi.c src/xbt/dict_cursor.c
  85       src/xbt/set.c src/xbt/setset.c
  86       src/xbt/dynar.c src/xbt/fifo.c src/xbt/heap.c src/xbt/swag.c
  87       src/xbt/str.c src/xbt/strbuff.c src/xbt/snprintf.c
  88       src/xbt/queue.c
  89       src/xbt/xbt_os_time.c src/xbt/xbt_os_thread.c
  90       src/xbt/sha.c
  91       src/xbt/matrix.c
  92       src/xbt/backtrace_linux.c
  93       ${MC_SRC_BASE} ${MC_SRC})
  94       set (mcCFLAGS "-O3  -funroll-loops -fno-strict-aliasing")
  95        if(CMAKE_COMPILER_IS_GNUCC)
  96          set (mcCFLAGS "${mcCFLAGS} -finline-functions")
  97       endif()
  98       set_source_files_properties(${s} PROPERTIES COMPILE_FLAGS ${mcCFLAGS})
  99   endforeach()
 100 endif()
 101
 102 if(APPLE AND COMPILER_C_VERSION_MAJOR_MINOR MATCHES "4.6")
 103   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
 104   set(optCFLAGS "-O0 ")
 105 endif()
 106
 107 if(NOT enable_debug)
 108   set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
 109   set(CMAKE_CXX_FLAGS "-DNDEBUG ${CMAKE_CXX_FLAGS}")
 110 endif()
 111
 112 if(enable_msg_deprecated)
 113   set(CMAKE_C_FLAGS "-DMSG_USE_DEPRECATED ${CMAKE_C_FLAGS}")
 114 endif()
 115
 116 set(CMAKE_C_FLAGS "${optCFLAGS} ${warnCFLAGS} ${CMAKE_C_FLAGS}")
 117
 118 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
 119
 120 # Try to make Mac a bit more complient to open source standards
 121 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
 122   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=700 -D_DARWIN_C_SOURCE")
 123 endif()
 124
 125 set(TESH_OPTION "")
 126 if(enable_coverage)
 127   find_program(GCOV_PATH gcov)
 128   if(GCOV_PATH)
 129     set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
 130     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
 131     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
 132     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
 133     set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
 134     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
 135     set(TESH_OPTION --enable-coverage)
 136     add_definitions(-fprofile-arcs -ftest-coverage)
 137   endif()
 138 endif()
 139
 140 if(NOT $ENV{CFLAGS} STREQUAL "")
 141   message(STATUS "Add CFLAGS: \"$ENV{CFLAGS}\" to CMAKE_C_FLAGS")
 142   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} $ENV{CFLAGS}")
 143 endif()
 144
 145 if(NOT $ENV{CXXFLAGS} STREQUAL "")
 146   message(STATUS "Add CXXFLAGS: \"$ENV{CXXFLAGS}\" to CMAKE_CXX_FLAGS")
 147   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} $ENV{CXXFLAGS}")
 148 endif()
 149
 150 if(NOT $ENV{LDFLAGS} STREQUAL "")
 151   message(STATUS "Add LDFLAGS: \"$ENV{LDFLAGS}\" to CMAKE_C_LINK_FLAGS")
 152   set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} $ENV{LDFLAGS}")
 153 endif()