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35 # Test C flags FLAGS, and set VARIABLE to true if the work. Also add the
37 MACRO(GMX_TEST_CFLAG VARIABLE FLAGS CFLAGSVAR)
38 IF(NOT DEFINED ${VARIABLE})
39 CHECK_C_COMPILER_FLAG("${FLAGS}" ${VARIABLE})
42 SET (${CFLAGSVAR} "${FLAGS} ${${CFLAGSVAR}}")
44 ENDMACRO(GMX_TEST_CFLAG VARIABLE FLAGS CFLAGSVAR)
46 # Test C++ flags FLAGS, and set VARIABLE to true if the work. Also add the
47 # flags to CXXFLAGSVAR.
48 MACRO(GMX_TEST_CXXFLAG VARIABLE FLAGS CXXFLAGSVAR)
49 IF(NOT DEFINED ${VARIABLE})
50 CHECK_CXX_COMPILER_FLAG("${FLAGS}" ${VARIABLE})
53 SET (${CXXFLAGSVAR} "${FLAGS} ${${CXXFLAGSVAR}}")
55 ENDMACRO(GMX_TEST_CXXFLAG VARIABLE FLAGS CXXFLAGSVAR)
57 # Set the real CMake variables for compiler flags. This should be a function
58 # so we can have proper local variables while avoiding duplicating code.
59 function(gmx_set_cmake_compiler_flags)
60 foreach(language C CXX)
61 # Copy the flags for the release build type to the build types
62 # that are modified forms of it. Ideally, the list of build
63 # types that are modifications of the Release build type would
64 # be set up elsewhere and passed to this function, but it is
65 # inconvenient in CMake to pass more than one list, and such a
66 # list is only used here.
67 foreach(build_type RELWITHDEBUGINFO RELWITHASSERT MINSIZEREL)
68 set(GMXC_${language}FLAGS_${build_type} "${GMXC_${language}FLAGS_RELEASE}")
70 # Copy the flags that are only used by the real Release build
71 # type. Currently unused, but we plan to use -Wno-array-bounds
72 # in Release to work around gcc-4.8 being a little too vocal
73 # about some perfectly good code, while using RelWithAssert
74 # (ie. without that suppression) in Jenkins.
75 set(GMXC_${language}FLAGS_RELEASE "${GMXC_${language}FLAGS_RELEASE} ${GMXC_${language}FLAGS_RELEASE_ONLY}")
77 # Modify the real CMake variables for compiler flags for all
78 # builds and language types, and also those common to all
80 foreach(build_type "" ${build_types_with_explicit_flags})
81 if("${build_type}" STREQUAL "")
82 set(punctuation "") # for general compiler flags (e.g.) CMAKE_CXX_FLAGS
84 set(punctuation "_") # for build-type-specific compiler flags (e.g.) CMAKE_CXX_FLAGS_RELEASE
87 # Append to the variables for the given build type for
88 # each language, in the parent scope.
89 set(CMAKE_${language}_FLAGS${punctuation}${build_type}
90 "${GMXC_${language}FLAGS${punctuation}${build_type}} ${CMAKE_${language}_FLAGS${punctuation}${build_type}}"
96 # This is the actual exported function to be called
99 include(CheckCCompilerFlag)
100 include(CheckCXXCompilerFlag)
103 if(CMAKE_COMPILER_IS_GNUCC)
104 #flags are added in reverse order and -Wno* need to appear after -Wall
106 GMX_TEST_CFLAG(CFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CFLAGS)
108 GMX_TEST_CFLAG(CFLAGS_WARN "-Wall -Wno-unused -Wunused-value -Wunused-parameter" GMXC_CFLAGS)
109 GMX_TEST_CFLAG(CFLAGS_WARN_EXTRA "-Wextra -Wno-missing-field-initializers -Wno-sign-compare -Wpointer-arith" GMXC_CFLAGS)
110 # Since 4.8 on by default. For previous version disabling is a no-op. Only disabling for Release because with assert
111 # the warnings are OK.
112 GMX_TEST_CFLAG(CFLAGS_WARN_REL "-Wno-array-bounds" GMXC_CFLAGS_RELEASE_ONLY)
113 # Since gcc 4.8 strict - false postives with old gmx_fatal. TODO: Remove in master
114 GMX_TEST_CFLAG(CFLAGS_WARN_UNINIT "-Wno-maybe-uninitialized" GMXC_CFLAGS)
116 GMX_TEST_CFLAG(CFLAGS_EXCESS_PREC "-fexcess-precision=fast" GMXC_CFLAGS_RELEASE)
117 GMX_TEST_CFLAG(CFLAGS_COPT "-fomit-frame-pointer -funroll-all-loops"
119 GMX_TEST_CFLAG(CFLAGS_NOINLINE "-fno-inline" GMXC_CFLAGS_DEBUG)
122 if(CMAKE_COMPILER_IS_GNUCXX)
124 GMX_TEST_CXXFLAG(CXXFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CXXFLAGS)
126 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "-Wall -Wno-unused-function" GMXC_CXXFLAGS)
127 # Problematic with CUDA
128 # GMX_TEST_CXXFLAG(CXXFLAGS_WARN_EFFCXX "-Wnon-virtual-dtor" GMXC_CXXFLAGS)
129 GMX_TEST_CXXFLAG(CXXFLAGS_WARN_EXTRA "-Wextra -Wno-missing-field-initializers -Wpointer-arith" GMXC_CXXFLAGS)
130 GMX_TEST_CFLAG(CXXFLAGS_WARN_REL "-Wno-array-bounds" GMXC_CXXFLAGS_RELEASE_ONLY)
132 GMX_TEST_CXXFLAG(CXXFLAGS_EXCESS_PREC "-fexcess-precision=fast" GMXC_CXXFLAGS_RELEASE)
133 GMX_TEST_CXXFLAG(CXXFLAGS_COPT "-fomit-frame-pointer -funroll-all-loops"
134 GMXC_CXXFLAGS_RELEASE)
135 GMX_TEST_CXXFLAG(CXXFLAGS_NOINLINE "-fno-inline" GMXC_CXXFLAGS_DEBUG)
139 if (CMAKE_C_COMPILER_ID MATCHES "Intel")
142 GMX_TEST_CFLAG(CFLAGS_PRAGMA "-wd161" GMXC_CFLAGS)
144 GMX_TEST_CFLAG(CFLAGS_WARN "-w3 -wd111 -wd177 -wd181 -wd193 -wd271 -wd304 -wd383 -wd424 -wd444 -wd522 -wd593 -wd869 -wd981 -wd1418 -wd1419 -wd1572 -wd1599 -wd2259 -wd2415 -wd2547 -wd2557 -wd3280 -wd3346" GMXC_CFLAGS)
145 GMX_TEST_CFLAG(CFLAGS_STDGNU "-std=gnu99" GMXC_CFLAGS)
146 GMX_TEST_CFLAG(CFLAGS_OPT "-ip -funroll-all-loops -alias-const -ansi-alias" GMXC_CFLAGS_RELEASE)
149 GMX_TEST_CFLAG(CFLAGS_PRAGMA "/wd161" GMXC_CFLAGS)
151 GMX_TEST_CFLAG(CFLAGS_WARN "/W3 /wd111 /wd177 /wd181 /wd193 /wd271 /wd304 /wd383 /wd424 /wd444 /wd522 /wd593 /wd869 /wd981 /wd1418 /wd1419 /wd1572 /wd1599 /wd2259 /wd2415 /wd2547 /wd2557 /wd3280 /wd3346" GMXC_CFLAGS)
152 GMX_TEST_CFLAG(CFLAGS_OPT "/Qip" GMXC_CFLAGS_RELEASE)
156 if (CMAKE_CXX_COMPILER_ID MATCHES "Intel")
159 GMX_TEST_CXXFLAG(CXXFLAGS_PRAGMA "-wd161" GMXC_CXXFLAGS)
161 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "-w3 -wd111 -wd177 -wd181 -wd193 -wd271 -wd304 -wd383 -wd424 -wd444 -wd522 -wd593 -wd869 -wd981 -wd1418 -wd1419 -wd1572 -wd1599 -wd2259 -wd2415 -wd2547 -wd2557 -wd3280 -wd3346 -wd1782" GMXC_CXXFLAGS)
162 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-ip -funroll-all-loops -alias-const -ansi-alias" GMXC_CXXFLAGS_RELEASE)
165 GMX_TEST_CXXFLAG(CXXFLAGS_PRAGMA "/wd161" GMXC_CXXFLAGS)
167 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "/W3 /wd111 /wd177 /wd181 /wd193 /wd271 /wd304 /wd383 /wd424 /wd444 /wd522 /wd593 /wd869 /wd981 /wd1418 /wd1419 /wd1572 /wd1599 /wd2259 /wd2415 /wd2547 /wd2557 /wd3280 /wd3346 /wd1782" GMXC_CXXFLAGS)
168 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "/Qip" GMXC_CXXFLAGS_RELEASE)
173 if (CMAKE_C_COMPILER_ID MATCHES "PGI")
174 GMX_TEST_CFLAG(CFLAGS_OPT "-fastsse" GMXC_CFLAGS_RELEASE)
176 if (CMAKE_CXX_COMPILER_ID MATCHES "PGI")
177 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-fastsse" GMXC_CXXFLAGS_RELEASE)
181 if (CMAKE_C_COMPILER_ID MATCHES "PathScale")
183 GMX_TEST_CFLAG(CFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CFLAGS)
185 GMX_TEST_CFLAG(CFLAGS_WARN "-Wall -Wno-unused -Wunused-value" GMXC_CFLAGS)
186 GMX_TEST_CFLAG(CFLAGS_OPT "-OPT:Ofast -fno-math-errno -ffast-math"
188 GMX_TEST_CFLAG(CFLAGS_LANG "-std=gnu99" GMXC_CFLAGS)
190 if (CMAKE_CXX_COMPILER_ID MATCHES "PathScale")
192 GMX_TEST_CXXFLAG(CXXFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CXXFLAGS)
194 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "-Wall -Wno-unused -Wunused-value" GMXC_CXXFLAGS)
195 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-OPT:Ofast -fno-math-errno -ffast-math"
196 GMXC_CXXFLAGS_RELEASE)
200 if (CMAKE_C_COMPILER_ID MATCHES "XL")
201 GMX_TEST_CFLAG(CFLAGS_OPT "-qarch=auto -qtune=auto" GMXC_CFLAGS)
202 GMX_TEST_CFLAG(CFLAGS_LANG "-qlanglvl=extc99" GMXC_CFLAGS)
204 if (CMAKE_CXX_COMPILER_ID MATCHES "XL")
205 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-qarch=auto -qtune=auto" GMXC_CXXFLAGS)
210 # disable warnings for:
211 # forcing value to bool
212 # "this" in initializer list
213 # deprecated (posix, secure) functions
214 # truncation (double -> float)
215 # conversion from 'double' to 'real', possible loss of data
216 # unreferenced local variable (only C)
217 # conversion from 'size_t' to 'int', possible loss of data
218 # conversion from 'const char*' to 'void*', different 'const' qualifiers (only C)
219 if(NOT CMAKE_CONFIGURATION_TYPES)
220 GMX_TEST_CFLAG(CFLAGS_WARN "/wd4800 /wd4355 /wd4996 /wd4305 /wd4244 /wd4101 /wd4267 /wd4090" GMXC_CFLAGS)
221 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "/wd4800 /wd4355 /wd4996 /wd4305 /wd4244 /wd4267" GMXC_CXXFLAGS)
222 else() #Projects only use the C++ flags
223 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "/wd4800 /wd4355 /wd4996 /wd4305 /wd4244 /wd4101 /wd4267 /wd4090" GMXC_CXXFLAGS)
227 if (CMAKE_C_COMPILER_ID MATCHES "Clang")
229 GMX_TEST_CFLAG(CFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CFLAGS)
231 GMX_TEST_CFLAG(CFLAGS_WARN "-Wall -Wno-unused -Wunused-value -Wunused-parameter" GMXC_CFLAGS)
232 GMX_TEST_CFLAG(CFLAGS_WARN_EXTRA "-Wpointer-arith" GMXC_CFLAGS_EXTRA)
235 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
237 GMX_TEST_CXXFLAG(CXXFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CXXFLAGS)
239 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "-Wall -Wno-unused-function" GMXC_CXXFLAGS)
240 GMX_TEST_CXXFLAG(CXXFLAGS_WARN_EXTRA "-Wextra -Wno-missing-field-initializers -Wpointer-arith" GMXC_CXXFLAGS)
243 # now actually set the flags:
244 if (NOT GMX_SKIP_DEFAULT_CFLAGS)
245 gmx_set_cmake_compiler_flags()
247 ENDMACRO(gmx_c_flags)