2 # Test C flags FLAGS, and set VARIABLE to true if the work. Also add the
4 MACRO(GMX_TEST_CFLAG VARIABLE FLAGS CFLAGSVAR)
5 IF(NOT DEFINED ${VARIABLE})
6 CHECK_C_COMPILER_FLAG("${FLAGS}" ${VARIABLE})
8 SET (${CFLAGSVAR} "${FLAGS} ${${CFLAGSVAR}}")
10 ENDIF(NOT DEFINED ${VARIABLE})
11 ENDMACRO(GMX_TEST_CFLAG VARIABLE FLAGS CFLAGSVAR)
13 # Test C++ flags FLAGS, and set VARIABLE to true if the work. Also add the
14 # flags to CXXFLAGSVAR.
15 MACRO(GMX_TEST_CXXFLAG VARIABLE FLAGS CXXFLAGSVAR)
16 IF(NOT DEFINED ${VARIABLE})
17 CHECK_CXX_COMPILER_FLAG("${FLAGS}" ${VARIABLE})
19 SET (${CXXFLAGSVAR} "${FLAGS} ${${CXXFLAGSVAR}}")
21 ENDIF(NOT DEFINED ${VARIABLE})
22 ENDMACRO(GMX_TEST_CXXFLAG VARIABLE FLAGS CXXFLAGSVAR)
25 # This is the actual exported function to be called
28 include(CheckCCompilerFlag)
29 include(CheckCXXCompilerFlag)
32 if(CMAKE_COMPILER_IS_GNUCC)
33 #flags are added in reverse order and -Wno* need to appear after -Wall
35 GMX_TEST_CFLAG(CFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CFLAGS)
37 GMX_TEST_CFLAG(CFLAGS_WARN "-Wall -Wno-unused" GMXC_CFLAGS)
39 GMX_TEST_CFLAG(CFLAGS_EXCESS_PREC "-fexcess-precision=fast" GMXC_CFLAGS)
40 GMX_TEST_CFLAG(CFLAGS_COPT "-fomit-frame-pointer -finline-functions -funroll-all-loops"
42 GMX_TEST_CFLAG(CFLAGS_NOINLINE "-fno-inline" GMXC_CFLAGS_DEBUG)
45 if(CMAKE_COMPILER_IS_GNUCXX)
47 GMX_TEST_CFLAG(CXXFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CXXFLAGS)
49 GMX_TEST_CXXFLAG(CXXFLAGS_WARN "-Wall -Wno-unused" GMXC_CXXFLAGS)
51 GMX_TEST_CXXFLAG(CXXFLAGS_EXCESS_PREC "-fexcess-precision=fast"
53 GMX_TEST_CXXFLAG(CXXFLAGS_COPT "-fomit-frame-pointer -finline-functions -funroll-all-loops"
54 GMXC_CXXFLAGS_RELEASE)
55 GMX_TEST_CXXFLAG(CXXFLAGS_NOINLINE "-fno-inline" GMXC_CXXFLAGS_DEBUG)
59 if (CMAKE_C_COMPILER_ID MATCHES "Intel")
61 GMX_TEST_CFLAG(CFLAGS_OPT "-std=gnu99" GMXC_CFLAGS)
62 GMX_TEST_CFLAG(CFLAGS_OPT "-ip -funroll-all-loops" GMXC_CFLAGS_RELEASE)
63 GMX_TEST_CFLAG(CFLAGS_SSE2 "-msse2" GMXC_CFLAGS_RELEASE)
64 GMX_TEST_CFLAG(CFLAGS_X86 "-mtune=core2" GMXC_CFLAGS_RELEASE)
65 GMX_TEST_CFLAG(CFLAGS_IA64 "-mtune=itanium2" GMXC_CFLAGS_RELEASE)
67 GMX_TEST_CFLAG(CFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CFLAGS)
70 GMX_TEST_CFLAG(CFLAGS_SSE2 "/arch:SSE2" GMXC_CFLAGS_RELEASE)
71 GMX_TEST_CFLAG(CFLAGS_X86 "/Qip" GMXC_CFLAGS_RELEASE)
75 if (CMAKE_CXX_COMPILER_ID MATCHES "Intel")
77 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-std=gnu99" GMXC_CXXFLAGS)
78 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-ip -funroll-all-loops" GMXC_CXXFLAGS_RELEASE)
79 GMX_TEST_CXXFLAG(CXXFLAGS_SSE2 "-msse2" GMXC_CXXFLAGS_RELEASE)
80 GMX_TEST_CXXFLAG(CXXFLAGS_X86 "-mtune=core2" GMXC_CXXFLAGS_RELEASE)
81 GMX_TEST_CXXFLAG(CXXFLAGS_IA64 "-mtune=itanium2"
82 GMXC_CXXFLAGS_RELEASE)
84 GMX_TEST_CFLAG(CXXFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CXXFLAGS)
87 GMX_TEST_CXXFLAG(CXXFLAGS_SSE2 "/arch:SSE2" GMXC_CXXFLAGS_RELEASE)
88 GMX_TEST_CXXFLAG(CXXFLAGS_X86 "/Qip" GMXC_CXXFLAGS_RELEASE)
93 if (CMAKE_C_COMPILER_ID MATCHES "PGI")
94 GMX_TEST_CFLAG(CFLAGS_OPT "-fastsse" GMXC_CFLAGS_RELEASE)
96 if (CMAKE_CXX_COMPILER_ID MATCHES "PGI")
97 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-fastsse" GMXC_CXXFLAGS_RELEASE)
101 if (CMAKE_C_COMPILER_ID MATCHES "PathScale")
102 GMX_TEST_CFLAG(CFLAGS_OPT "-OPT:Ofast -fno-math-errno -ffast-math"
104 GMX_TEST_CFLAG(CFLAGS_LANG "-std=gnu99" GMXC_CFLAGS)
106 if (CMAKE_CXX_COMPILER_ID MATCHES "PathScale")
107 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-OPT:Ofast -fno-math-errno -ffast-math"
108 GMXC_CXXFLAGS_RELEASE)
112 if (CMAKE_C_COMPILER_ID MATCHES "XL")
113 GMX_TEST_CFLAG(CFLAGS_OPT "-qarch=auto -qtune=auto" GMXC_CFLAGS)
114 GMX_TEST_CFLAG(CFLAGS_LANG "-qlanglvl=extc99" GMXC_CFLAGS)
116 if (CMAKE_CXX_COMPILER_ID MATCHES "XL")
117 GMX_TEST_CXXFLAG(CFLAGS_OPT "-qarch=auto -qtune=auto" GMXC_CXXFLAGS)
122 # disable warnings for:
123 # inconsistent dll linkage
124 GMX_TEST_CFLAG(CFLAGS_WARN "/wd4273" GMXC_CFLAGS)
125 GMX_TEST_CFLAG(CXXFLAGS_WARN "/wd4273" GMXC_CXXFLAGS)
129 # now actually set the flags:
131 if ( NOT DEFINED GMXCFLAGS_SET AND NOT DEFINED ENV{CFLAGS} )
132 set(GMXCFLAGS_SET true CACHE INTERNAL "Whether to reset the C flags"
135 set(CMAKE_C_FLAGS "${GMXC_CFLAGS} ${CMAKE_C_FLAGS}"
136 CACHE STRING "Flags used by the compiler during all build types."
138 set(CMAKE_C_FLAGS_RELEASE "${GMXC_CFLAGS_RELEASE} ${CMAKE_C_FLAGS_RELEASE}"
139 CACHE STRING "Flags used by the compiler during release builds."
141 set(CMAKE_C_FLAGS_DEBUG "${GMXC_CFLAGS_DEBUG} ${CMAKE_C_FLAGS_DEBUG}"
142 CACHE STRING "Flags used by the compiler during debug builds."
147 if ( NOT DEFINED GMXCXXFLAGS_SET AND NOT DEFINED ENV{CXXFLAGS} )
148 set(GMXCXXFLAGS_SET true CACHE INTERNAL "Whether to reset the C++ flags"
150 set(CMAKE_CXX_FLAGS "${GMXC_CXXFLAGS} ${CMAKE_CXX_FLAGS}"
151 CACHE STRING "Flags used by the compiler during all build types."
153 set(CMAKE_CXX_FLAGS_RELEASE
154 "${GMXC_CXXFLAGS_RELEASE} ${CMAKE_CXX_FLAGS_RELEASE}"
155 CACHE STRING "Flags used by the compiler during release builds."
157 set(CMAKE_CXX_FLAGS_DEBUG
158 "${GMXC_CXXFLAGS_DEBUG} ${CMAKE_CXX_FLAGS_DEBUG}"
159 CACHE STRING "Flags used by the compiler during debug builds."
162 ENDMACRO(gmx_c_flags)