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[simgrid.git] / buildtools / Cmake / Flags.cmake
1 set(warnCFLAGS "")
2 set(optCFLAGS "")
3
4 if(NOT __VISUALC__ AND NOT __BORLANDC__)
5   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}-g3")
6   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}-g3")
7 else()
8   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}/Zi")
9   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}/Zi")
10 endif()
11
12 if(enable_compile_warnings)
13   set(warnCFLAGS "-fno-common -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wclobbered -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror -Wno-error=clobbered ")
14   if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
15     set(warnCFLAGS "${warnCFLAGS}-Wno-error=unused-but-set-variable ")
16   endif()
17   if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
18     string(REPLACE "-Wclobbered " "" warnCFLAGS "${warnCFLAGS}")
19   endif()
20
21   set(CMAKE_Fortran_FLAGS "-Wall") # FIXME: Q&D hack
22
23   set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
24 endif()
25
26 if(enable_compile_optimizations)
27   set(optCFLAGS "-O3 -finline-functions -funroll-loops -fno-strict-aliasing ")
28   if(WIN32)
29     if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.7")
30     # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
31       set(optCFLAGS "${optCFLAGS} -flto ")
32     endif()
33   else()    
34     # On non-windows, 4.6 is enough for that
35     if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
36       set(optCFLAGS "${optCFLAGS} -flto ")
37     endif()
38   endif()
39 else()
40   set(optCFLAGS "-O0 ")
41 endif()
42
43 if(APPLE AND COMPILER_C_VERSION_MAJOR_MINOR MATCHES "4.6")
44   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
45   set(optCFLAGS "-O0 ")
46 endif()
47
48 if(NOT enable_debug)
49   set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
50 endif()
51
52 if(enable_msg_deprecated)
53   set(CMAKE_C_FLAGS "-DMSG_USE_DEPRECATED ${CMAKE_C_FLAGS}")
54 endif()
55
56 set(CMAKE_C_FLAGS "${optCFLAGS}${warnCFLAGS}${CMAKE_C_FLAGS}")
57
58 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
59
60 # Try to make Mac a bit more complient to open source standards
61 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
62   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE")
63 endif()
64
65 set(TESH_OPTION "")
66 if(enable_coverage)
67   find_program(GCOV_PATH gcov)
68   if(GCOV_PATH)
69     SET(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
70     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
71     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
72     set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
73     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
74     set(TESH_OPTION --enable-coverage)
75     add_definitions(-fprofile-arcs -ftest-coverage)
76   endif()
77 endif()
78
79 if(NOT $ENV{CFLAGS} STREQUAL "")
80   message(STATUS "Add CFLAGS: \"$ENV{CFLAGS}\" to CMAKE_C_FLAGS")
81   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} $ENV{CFLAGS}")
82 endif()
83
84 if(NOT $ENV{LDFLAGS} STREQUAL "")
85   message(STATUS "Add LDFLAGS: \"$ENV{LDFLAGS}\" to CMAKE_C_LINK_FLAGS")
86   set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} $ENV{LDFLAGS}")
87 endif()
88
89 if(enable_model-checking AND enable_compile_optimizations)
90   message(WARNING "Sorry for now GCC optimizations does not work with model checking.\nPlease turn off optimizations with command:\ncmake -Denable_compile_optimizations=off .")
91 endif()