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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 "${CMAKE_C_FLAGS}-std=gnu99 -g3")
6   set(CMAKE_CXX_FLAGS "${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 "${warnCFLAGS}-Wno-error=unused-but-set-variable ")
19     endif()
20     if(COMPILER_C_VERSION_MAJOR_MINOR STREQUAL "4.6")
21     #some old compilers emit bogus warnings here, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45978 . Avoid failing the build in this case
22       set(warnCFLAGS "${warnCFLAGS}-Wno-error=array-bounds")
23     endif()
24   endif()
25
26   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra  -Wunused -Wpointer-arith -Wchar-subscripts -Wcomment -Wno-unknown-warning-option -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wclobbered -Wno-error=clobbered -Wno-format-nonliteral -Werror")
27
28   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall") # FIXME: Q&D hack
29
30   set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
31 endif()
32
33 if(enable_compile_optimizations)
34   set(optCFLAGS "-O3 -funroll-loops -fno-strict-aliasing ")
35   if(CMAKE_COMPILER_IS_GNUCC AND (NOT enable_model-checking))
36     set(optCFLAGS "${optCFLAGS} -finline-functions ")
37     if(WIN32)
38       if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.7")
39       # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
40         set(optCFLAGS "${optCFLAGS} -flto ")
41       endif()
42     else()    
43       # On non-windows, 4.6 is enough for that
44       if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5" AND LINKER_VERSION STRGREATER "2.22")
45         set(optCFLAGS "${optCFLAGS} -flto ")
46       endif()
47     endif()
48   endif()
49 else()
50   set(optCFLAGS "-O0 ")
51 endif()
52
53 if(enable_sdt)
54   add_definitions(-DUSE_SDT)
55 endif()
56
57 if(enable_ust)
58   add_definitions(-DUSE_UST)
59 endif()
60
61 if(enable_model-checking AND enable_compile_optimizations)
62   # Forget it, do not optimize the code (because it confuses the MC):
63   set(optCFLAGS "-O0 ")
64   # But you can still optimize this:
65   foreach(s
66       # src/xbt/mmalloc/mm.c
67       # src/xbt/snprintf.c
68       # src/xbt/log.c src/xbt/xbt_log_appender_file.c
69       # src/xbt/xbt_log_layout_format.c src/xbt/xbt_log_layout_simple.c
70       # src/xbt/dynar.c
71       # src/xbt/dict.c src/xbt/dict_elm.c src/xbt/dict_multi.c
72       # src/xbt/set.c src/xbt/setset.c
73       # src/xbt/fifo.c
74       # src/xbt/setset.c
75       # src/xbt/heap.c
76       # src/xbt/swag.c
77       # src/xbt/str.c src/xbt/strbuff.c
78       # src/xbt/queue.c
79       # src/xbt/xbt_os_time.c src/xbt/xbt_os_thread.c
80       # src/xbt/backtrace_linux.c
81       ${MC_SRC_BASE} ${MC_SRC})
82       set (mcCFLAGS "-O3  -funroll-loops -fno-strict-aliasing")
83        if(CMAKE_COMPILER_IS_GNUCC)
84          set (mcCFLAGS "${mcCFLAGS} -finline-functions")
85       endif()
86       set_source_files_properties(${s} PROPERTIES COMPILE_FLAGS ${mcCFLAGS})
87   endforeach()
88 endif()
89
90 if(enable_mc_content_adressable_pages)
91   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DMC_PAGE_STORE_MD4")
92   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DMC_PAGE_STORE_MD4")
93 endif()
94
95 if(APPLE AND COMPILER_C_VERSION_MAJOR_MINOR MATCHES "4.6")
96   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
97   set(optCFLAGS "-O0 ")
98 endif()
99
100 if(NOT enable_debug)
101   set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
102   set(CMAKE_CXX_FLAGS "-DNDEBUG ${CMAKE_CXX_FLAGS}")
103 endif()
104
105 if(enable_msg_deprecated)
106   set(CMAKE_C_FLAGS "-DMSG_USE_DEPRECATED ${CMAKE_C_FLAGS}")
107 endif()
108
109 set(CMAKE_C_FLAGS "${optCFLAGS} ${warnCFLAGS} ${CMAKE_C_FLAGS}")
110
111 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
112
113 # Try to make Mac a bit more complient to open source standards
114 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
115   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE")
116 endif()
117
118 set(TESH_OPTION "")
119 if(enable_coverage)
120   find_program(GCOV_PATH gcov)
121   if(GCOV_PATH)
122     set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
123     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
124     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
125     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
126     set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
127     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
128     set(TESH_OPTION --enable-coverage)
129     add_definitions(-fprofile-arcs -ftest-coverage)
130   endif()
131 endif()
132
133 if(NOT $ENV{CFLAGS} STREQUAL "")
134   message(STATUS "Add CFLAGS: \"$ENV{CFLAGS}\" to CMAKE_C_FLAGS")
135   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} $ENV{CFLAGS}")
136 endif()
137
138 if(NOT $ENV{CXXFLAGS} STREQUAL "")
139   message(STATUS "Add CXXFLAGS: \"$ENV{CXXFLAGS}\" to CMAKE_CXX_FLAGS")
140   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} $ENV{CXXFLAGS}")
141 endif()
142
143 if(NOT $ENV{LDFLAGS} STREQUAL "")
144   message(STATUS "Add LDFLAGS: \"$ENV{LDFLAGS}\" to CMAKE_C_LINK_FLAGS")
145   set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} $ENV{LDFLAGS}")
146 endif()