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disable the same warnings in C++ than in C
[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 "${CMAKE_C_FLAGS}-std=gnu99 -g3")
6   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}-g3")
7   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -g")
8 else()
9   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}/Zi")
10   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}/Zi")
11 endif()
12
13 if(enable_compile_warnings)
14   set(warnCFLAGS "-fno-common -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror ")
15   if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
16     set(warnCFLAGS "${warnCFLAGS}-Wclobbered -Wno-error=clobbered ")
17     if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
18       set(warnCFLAGS "${warnCFLAGS}-Wno-error=unused-but-set-variable ")
19     endif()
20   endif()
21
22   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror")
23
24   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall") # FIXME: Q&D hack
25
26   set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
27 endif()
28
29 if(enable_compile_optimizations)
30   set(optCFLAGS "-O3 -finline-functions -funroll-loops -fno-strict-aliasing ")
31   if(CMAKE_COMPILER_IS_GNUCC)
32     if(WIN32)
33       if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.7")
34       # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
35         set(optCFLAGS "${optCFLAGS} -flto ")
36       endif()
37     else()    
38       # On non-windows, 4.6 is enough for that
39       if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
40         set(optCFLAGS "${optCFLAGS} -flto ")
41       endif()
42     endif()
43   endif()
44 else()
45   set(optCFLAGS "-O0 ")
46 endif()
47
48 if(APPLE AND COMPILER_C_VERSION_MAJOR_MINOR MATCHES "4.6")
49   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
50   set(optCFLAGS "-O0 ")
51 endif()
52
53 if(NOT enable_debug)
54   set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
55 endif()
56
57 if(enable_msg_deprecated)
58   set(CMAKE_C_FLAGS "-DMSG_USE_DEPRECATED ${CMAKE_C_FLAGS}")
59 endif()
60
61 set(CMAKE_C_FLAGS "${optCFLAGS}${warnCFLAGS}${CMAKE_C_FLAGS}")
62
63 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
64
65 # Try to make Mac a bit more complient to open source standards
66 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
67   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE")
68 endif()
69
70 set(TESH_OPTION "")
71 if(enable_coverage)
72   find_program(GCOV_PATH gcov)
73   if(GCOV_PATH)
74     set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
75     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
76     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
77     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
78     set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
79     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
80     set(TESH_OPTION --enable-coverage)
81     add_definitions(-fprofile-arcs -ftest-coverage)
82   endif()
83 endif()
84
85 if(NOT $ENV{CFLAGS} STREQUAL "")
86   message(STATUS "Add CFLAGS: \"$ENV{CFLAGS}\" to CMAKE_C_FLAGS")
87   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} $ENV{CFLAGS}")
88 endif()
89
90 if(NOT $ENV{CXXFLAGS} STREQUAL "")
91   message(STATUS "Add CXXFLAGS: \"$ENV{CXXFLAGS}\" to CMAKE_CXX_FLAGS")
92   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} $ENV{CXXFLAGS}")
93 endif()
94
95 if(NOT $ENV{LDFLAGS} STREQUAL "")
96   message(STATUS "Add LDFLAGS: \"$ENV{LDFLAGS}\" to CMAKE_C_LINK_FLAGS")
97   set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} $ENV{LDFLAGS}")
98 endif()
99
100 if(enable_model-checking AND enable_compile_optimizations)
101   message(WARNING "Sorry for now GCC optimizations does not work with model checking.\nPlease turn off optimizations with command:\ncmake -Denable_compile_optimizations=off .")
102 endif()