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 "-ip -funroll-all-loops -std=gnu99"
63 GMX_TEST_CFLAG(CFLAGS_SSE2 "-msse2" GMXC_CFLAGS)
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)
71 GMX_TEST_CFLAG(CFLAGS_X86 "/Qip" GMXC_CFLAGS_RELEASE)
75 if (CMAKE_CXX_COMPILER_ID MATCHES "Intel")
77 GMX_TEST_CXXFLAG(CXXFLAGS_OPT
78 "-ip -funroll-all-loops -std=gnu99"
80 GMX_TEST_CXXFLAG(CXXFLAGS_SSE2 "-msse2" GMXC_CXXFLAGS)
81 GMX_TEST_CXXFLAG(CXXFLAGS_X86 "-mtune=core2" GMXC_CXXFLAGS_RELEASE)
82 GMX_TEST_CXXFLAG(CXXFLAGS_IA64 "-mtune=itanium2"
83 GMXC_CXXFLAGS_RELEASE)
85 GMX_TEST_CFLAG(CXXFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CXXFLAGS)
88 GMX_TEST_CXXFLAG(CXXFLAGS_SSE2 "/arch:SSE2" GMXC_CXXFLAGS)
89 GMX_TEST_CXXFLAG(CXXFLAGS_X86 "/Qip" GMXC_CXXFLAGS_RELEASE)
94 if (CMAKE_C_COMPILER_ID MATCHES "PGI")
95 GMX_TEST_CFLAG(CFLAGS_OPT "-fastsse" GMXC_CFLAGS_RELEASE)
97 if (CMAKE_CXX_COMPILER_ID MATCHES "PGI")
98 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-fastsse" GMXC_CXXFLAGS_RELEASE)
102 if (CMAKE_C_COMPILER_ID MATCHES "PathScale")
103 GMX_TEST_CFLAG(CFLAGS_OPT "-OPT:Ofast -fno-math-errno -ffast-math"
105 GMX_TEST_CFLAG(CFLAGS_LANG "-std=gnu99" GMXC_CFLAGS)
107 if (CMAKE_CXX_COMPILER_ID MATCHES "PathScale")
108 GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-OPT:Ofast -fno-math-errno -ffast-math"
109 GMXC_CXXFLAGS_RELEASE)
113 if (CMAKE_C_COMPILER_ID MATCHES "XL")
114 GMX_TEST_CFLAG(CFLAGS_OPT "-qarch=auto -qtune=auto" GMXC_CFLAGS)
115 GMX_TEST_CFLAG(CFLAGS_LANG "-qlanglvl=extc99" GMXC_CFLAGS)
117 if (CMAKE_CXX_COMPILER_ID MATCHES "XL")
118 GMX_TEST_CXXFLAG(CFLAGS_OPT "-qarch=auto -qtune=auto" GMXC_CXXFLAGS)
123 # disable warnings for:
124 # inconsistent dll linkage
125 GMX_TEST_CFLAG(CFLAGS_WARN "/wd4273" GMXC_CFLAGS)
126 GMX_TEST_CFLAG(CXXFLAGS_WARN "/wd4273" GMXC_CXXFLAGS)
130 # now actually set the flags:
132 if ( NOT DEFINED GMXCFLAGS_SET AND NOT DEFINED ENV{CFLAGS} )
133 set(GMXCFLAGS_SET true CACHE INTERNAL "Whether to reset the C flags"
136 set(CMAKE_C_FLAGS "${GMXC_CFLAGS} ${CMAKE_C_FLAGS}"
137 CACHE STRING "Flags used by the compiler during all build types."
139 set(CMAKE_C_FLAGS_RELEASE "${GMXC_CFLAGS_RELEASE} ${CMAKE_C_FLAGS_RELEASE}"
140 CACHE STRING "Flags used by the compiler during release builds."
142 set(CMAKE_C_FLAGS_DEBUG "${GMXC_CFLAGS_DEBUG} ${CMAKE_C_FLAGS_DEBUG}"
143 CACHE STRING "Flags used by the compiler during debug builds."
148 if ( NOT DEFINED GMXCXXFLAGS_SET AND NOT DEFINED ENV{CXXFLAGS} )
149 set(GMXCXXFLAGS_SET true CACHE INTERNAL "Whether to reset the C++ flags"
151 set(CMAKE_CXX_FLAGS "${GMXC_CXXFLAGS} ${CMAKE_CXX_FLAGS}"
152 CACHE STRING "Flags used by the compiler during all build types."
154 set(CMAKE_CXX_FLAGS_RELEASE
155 "${GMXC_CXXFLAGS_RELEASE} ${CMAKE_CXX_FLAGS_RELEASE}"
156 CACHE STRING "Flags used by the compiler during release builds."
158 set(CMAKE_CXX_FLAGS_DEBUG
159 "${GMXC_CXXFLAGS_DEBUG} ${CMAKE_CXX_FLAGS_DEBUG}"
160 CACHE STRING "Flags used by the compiler during debug builds."
163 ENDMACRO(gmx_c_flags)