2 ## This file is in charge of setting our paranoid flags with regard to warnings and optimization.
4 ## These flags do break some classical CMake tests, so you don't
5 ## want to do so before the very end of the configuration.
7 ## Other compiler flags (C/C++ standard version) are tested and set
8 ## by the beginning of the configuration, directly in ~/CMakeList.txt
15 if(enable_compile_warnings)
16 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 ")
17 if(CMAKE_COMPILER_IS_GNUCC)
18 set(warnCFLAGS "${warnCFLAGS}-Wclobbered -Wno-error=clobbered ")
21 set(CMAKE_CXX_FLAGS "${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")
22 if(CMAKE_COMPILER_IS_GNUCXX)
23 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wclobbered -Wno-error=clobbered")
25 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") # don't care about class that become struct
26 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-mismatched-tags")
29 set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall")
30 set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
33 # Se the optimisation flags
34 # NOTE, we should CMAKE_BUILD_TYPE for this
35 if(enable_compile_optimizations)
36 set(optCFLAGS "-O3 -funroll-loops -fno-strict-aliasing ")
40 if(enable_compile_optimizations AND CMAKE_COMPILER_IS_GNUCC
41 AND (NOT enable_model-checking))
42 # This is redundant (already in -03):
43 set(optCFLAGS "${optCFLAGS} -finline-functions ")
47 # TODO, provide an option to manually choose whether to use LTO
48 # NOTE, cmake 3.0 has a INTERPROCEDURAL_OPTIMIZATION target
49 # property for this (http://www.cmake.org/cmake/help/v3.0/prop_tgt/INTERPROCEDURAL_OPTIMIZATION.html)
51 if(enable_compile_optimizations
52 AND CMAKE_COMPILER_IS_GNUCC
53 AND (NOT enable_model-checking))
55 if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.8")
56 # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
58 # We are experiencing assertion failures even with 4.8 on MinGW.
59 # Push the support forward: will see if 4.9 works when we test it.
62 elseif(LINKER_VERSION STRGREATER "2.22")
67 set(optCFLAGS "${optCFLAGS} -flto ")
68 # See https://gcc.gnu.org/wiki/LinkTimeOptimizationFAQ#ar.2C_nm_and_ranlib:
69 # "Since version 4.9 gcc produces slim object files that only contain
70 # the intermediate representation. In order to handle archives of
71 # these objects you have to use the gcc wrappers:
72 # gcc-ar, gcc-nm and gcc-ranlib."
73 if(${CMAKE_C_COMPILER_ID} STREQUAL "GNU"
74 AND COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.8")
76 set (CMAKE_RANLIB gcc-ranlib)
80 if(enable_model-checking AND enable_compile_optimizations)
81 # Forget it, do not optimize the code (because it confuses the MC):
83 # But you can still optimize this:
86 src/xbt/log.c src/xbt/xbt_log_appender_file.c
87 src/xbt/xbt_log_layout_format.c src/xbt/xbt_log_layout_simple.c
88 src/xbt/dict.c src/xbt/dict_elm.c src/xbt/dict_multi.c src/xbt/dict_cursor.c
89 src/xbt/set.c src/xbt/setset.c
90 src/xbt/dynar.c src/xbt/fifo.c src/xbt/heap.c src/xbt/swag.c
91 src/xbt/str.c src/xbt/strbuff.c src/xbt/snprintf.c
93 src/xbt/xbt_os_time.c src/xbt/xbt_os_thread.c
96 src/xbt/backtrace_linux.c
97 ${MC_SRC_BASE} ${MC_SRC})
98 set (mcCFLAGS "-O3 -funroll-loops -fno-strict-aliasing")
99 if(CMAKE_COMPILER_IS_GNUCC)
100 set (mcCFLAGS "${mcCFLAGS} -finline-functions")
102 set_source_files_properties(${s} PROPERTIES COMPILE_FLAGS ${mcCFLAGS})
107 set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
108 set(CMAKE_CXX_FLAGS "-DNDEBUG ${CMAKE_CXX_FLAGS}")
111 if(enable_msg_deprecated)
112 set(CMAKE_C_FLAGS "-DMSG_USE_DEPRECATED ${CMAKE_C_FLAGS}")
115 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${optCFLAGS} ${warnCFLAGS}")
116 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
118 # Try to make Mac a bit more complient to open source standards
119 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
120 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=700 -D_DARWIN_C_SOURCE")
125 find_program(GCOV_PATH gcov)
127 set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
128 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
129 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
130 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
131 set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
132 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
133 set(TESH_OPTION --enable-coverage)
134 add_definitions(-fprofile-arcs -ftest-coverage)
138 if(NOT $ENV{CFLAGS} STREQUAL "")
139 message(STATUS "Add CFLAGS: \"$ENV{CFLAGS}\" to CMAKE_C_FLAGS")
140 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} $ENV{CFLAGS}")
143 if(NOT $ENV{CXXFLAGS} STREQUAL "")
144 message(STATUS "Add CXXFLAGS: \"$ENV{CXXFLAGS}\" to CMAKE_CXX_FLAGS")
145 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} $ENV{CXXFLAGS}")
148 if(NOT $ENV{LDFLAGS} STREQUAL "")
149 message(STATUS "Add LDFLAGS: \"$ENV{LDFLAGS}\" to CMAKE_C_LINK_FLAGS")
150 set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} $ENV{LDFLAGS}")