2 ## This file is in charge of setting our paranoid flags with regard to warnings and optimization.
4 ## It is only used for gcc and clang. MSVC builds don't load this file.
6 ## These flags do break some classical CMake tests, so you don't
7 ## want to do so before the very end of the configuration.
9 ## Other compiler flags (C/C++ standard version) are tested and set
10 ## by the beginning of the configuration, directly in ~/CMakeList.txt
16 if(enable_compile_warnings)
17 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 ")
18 if(CMAKE_COMPILER_IS_GNUCC)
19 set(warnCFLAGS "${warnCFLAGS}-Wclobbered -Wno-error=clobbered -Wno-unused-local-typedefs")
22 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wunused -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror")
23 if(CMAKE_COMPILER_IS_GNUCXX)
24 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wclobbered -Wno-error=clobbered -Wno-unused-local-typedefs")
26 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") # don't care about class that become struct
27 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-mismatched-tags")
30 set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall")
31 set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
34 # Activate the warnings on #if FOOBAR when FOOBAR has no value
35 # It breaks on FreeBSD within Boost headers, so activate this only in Pure Hardcore debug mode.
36 if(enable_maintainer_mode)
37 set(warnCFLAGS "${warnCFLAGS} -Wundef")
38 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wundef")
41 # Se the optimisation flags
42 # NOTE, we should CMAKE_BUILD_TYPE for this
43 if(enable_compile_optimizations)
44 set(optCFLAGS "-O3 -funroll-loops -fno-strict-aliasing ")
48 if(enable_compile_optimizations AND CMAKE_COMPILER_IS_GNUCC
49 AND (NOT enable_model-checking))
50 # This is redundant (already in -03):
51 set(optCFLAGS "${optCFLAGS} -finline-functions ")
55 # NOTE, cmake 3.0 has a INTERPROCEDURAL_OPTIMIZATION target
56 # property for this (http://www.cmake.org/cmake/help/v3.0/prop_tgt/INTERPROCEDURAL_OPTIMIZATION.html)
57 if(enable_lto) # User wants LTO. Try if we can do that
59 if(enable_compile_optimizations
60 AND CMAKE_COMPILER_IS_GNUCC
61 AND (NOT enable_model-checking))
63 if (CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.8")
64 # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
66 # We are experiencing assertion failures even with 4.8 on MinGW.
67 # Push the support forward: will see if 4.9 works when we test it.
70 elseif(LINKER_VERSION STRGREATER "2.22")
75 message("-- LTO seems usable.")
77 if(NOT enable_compile_optimizations)
78 message("-- LTO disabled: Compile-time optimizations turned off.")
80 if(enable_model-checking)
81 message("-- LTO disabled when compiling with model-checking.")
83 message("-- LTO does not seem usable -- try updating your build chain.")
88 message("-- LTO disabled on the command line.")
90 if(enable_lto) # User wants LTO, and it seems usable. Go for it
91 set(optCFLAGS "${optCFLAGS} -flto ")
92 # See https://gcc.gnu.org/wiki/LinkTimeOptimizationFAQ#ar.2C_nm_and_ranlib:
93 # "Since version 4.9 gcc produces slim object files that only contain
94 # the intermediate representation. In order to handle archives of
95 # these objects you have to use the gcc wrappers:
96 # gcc-ar, gcc-nm and gcc-ranlib."
97 if(${CMAKE_C_COMPILER_ID} STREQUAL "GNU"
98 AND CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.8")
100 set (CMAKE_RANLIB gcc-ranlib)
104 if(enable_model-checking AND enable_compile_optimizations)
105 # Forget it, do not optimize the code (because it confuses the MC):
106 set(optCFLAGS "-O0 ")
107 # But you can still optimize this:
110 src/xbt/log.c src/xbt/xbt_log_appender_file.c
111 src/xbt/xbt_log_layout_format.c src/xbt/xbt_log_layout_simple.c
112 src/xbt/dict.c src/xbt/dict_elm.c src/xbt/dict_multi.c src/xbt/dict_cursor.c
114 src/xbt/dynar.c src/xbt/fifo.c src/xbt/heap.c src/xbt/swag.c
115 src/xbt/str.c src/xbt/strbuff.c src/xbt/snprintf.c
117 src/xbt/xbt_os_time.c src/xbt/xbt_os_thread.c
120 src/xbt/backtrace_linux.c
121 ${MC_SRC_BASE} ${MC_SRC})
122 set (mcCFLAGS "-O3 -funroll-loops -fno-strict-aliasing")
123 if(CMAKE_COMPILER_IS_GNUCC)
124 set (mcCFLAGS "${mcCFLAGS} -finline-functions")
126 set_source_files_properties(${s} PROPERTIES COMPILE_FLAGS ${mcCFLAGS})
131 set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
132 set(CMAKE_CXX_FLAGS "-DNDEBUG ${CMAKE_CXX_FLAGS}")
135 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${optCFLAGS} ${warnCFLAGS}")
136 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
138 # Try to make Mac a bit more complient to open source standards
139 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
140 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=700 -D_DARWIN_C_SOURCE")
145 find_program(GCOV_PATH gcov)
147 set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
148 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
149 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
150 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
151 set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
152 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
153 set(TESH_OPTION --enable-coverage)
154 add_definitions(-fprofile-arcs -ftest-coverage)
158 if(NOT $ENV{CFLAGS} STREQUAL "")
159 message(STATUS "Add CFLAGS: \"$ENV{CFLAGS}\" to CMAKE_C_FLAGS")
160 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} $ENV{CFLAGS}")
163 if(NOT $ENV{CXXFLAGS} STREQUAL "")
164 message(STATUS "Add CXXFLAGS: \"$ENV{CXXFLAGS}\" to CMAKE_CXX_FLAGS")
165 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} $ENV{CXXFLAGS}")
168 if(NOT $ENV{LDFLAGS} STREQUAL "")
169 message(STATUS "Add LDFLAGS: \"$ENV{LDFLAGS}\" to CMAKE_C_LINK_FLAGS")
170 set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} $ENV{LDFLAGS}")
174 # http://stackoverflow.com/questions/10452262/create-64-bit-jni-under-windows
175 # We don't want to ship libgcc_s_seh-1.dll nor libstdc++-6.dll
176 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static-libgcc")
177 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libgcc -static-libstdc++")
178 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS} -static-libgcc")
179 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS} -static-libgcc -static-libstdc++")
181 # JNI searches for stdcalls
182 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,--add-stdcall-alias")
183 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,--add-stdcall-alias")
184 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS} -Wl,--add-stdcall-alias")
185 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS} -Wl,--add-stdcall-alias")
187 # Specify the data model that we are using (yeah it may help Java)
189 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32")
190 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32")
192 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m64")
193 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m64")