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35 # Macro that runs through a number of tests for buggy compiler
36 # versions, or other potential problems.
37 macro(gmx_test_compiler_problems)
39 # Warn if C and C++ compilers do not match
40 if(NOT CMAKE_C_COMPILER_ID STREQUAL CMAKE_CXX_COMPILER_ID)
41 message(WARNING "The ids of the C and C++ compilers do not match (${CMAKE_C_COMPILER_ID} and ${CMAKE_CXX_COMPILER_ID}, respectively). Mixing different C/C++ compilers can cause problems.")
43 if(NOT CMAKE_C_COMPILER_VERSION STREQUAL CMAKE_CXX_COMPILER_VERSION)
44 message(WARNING "The versions of the C and C++ compilers do not match (${CMAKE_C_COMPILER_VERSION} and ${CMAKE_CXX_COMPILER_VERSION}, respectively). Mixing different C/C++ compilers can cause problems.")
47 # gcc 4.4.x is buggy and crashes when compiling some files with O3 and OpenMP on.
48 # Detect here whether applying a workaround is needed and will apply it later
49 # on the affected files. This test must come after gmx_c_flags(), since we
50 # only want to enable the workaround when using the -O3 flag.
51 include(gmxGCC44O3BugWorkaround)
52 gmx_check_gcc44_bug_workaround_needed(GMX_USE_GCC44_BUG_WORKAROUND)
54 # clang 3.0 is buggy for some unknown reason detected during adding
55 # the SSE2 group kernels for GROMACS 4.6. If we ever work out what
56 # that is, we should replace these tests with a compiler feature test,
57 # update GROMACS Redmine task #1039 and perhaps report a clang bug.
59 # In the meantime, until we require CMake 2.8.10 we cannot rely on it to detect
60 # the compiler version for us. So we need a manual check for clang 3.0.
61 include(gmxDetectClang30)
62 gmx_detect_clang_3_0(COMPILER_IS_CLANG_3_0)
63 if(COMPILER_IS_CLANG_3_0)
64 message(FATAL_ERROR "Your compiler is clang version 3.0, which is known to be buggy for GROMACS. Use a different compiler.")
67 # clang <=3.2 contains a bug that causes incorrect code to be generated for the
68 # vfmaddps instruction and therefore the bug is triggered with AVX_128_FMA.
69 # (see: http://llvm.org/bugs/show_bug.cgi?id=15040).
70 # We can work around this by not using the integrated assembler (except on OS X
71 # which has an outdated assembler that does not support AVX instructions).
72 if (CMAKE_C_COMPILER_ID MATCHES "Clang" AND CMAKE_C_COMPILER_VERSION VERSION_LESS "3.3")
73 set(GMX_USE_CLANG_C_FMA_BUG_WORKAROUND TRUE)
75 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.3")
76 set(GMX_USE_CLANG_CXX_FMA_BUG_WORKAROUND TRUE)
79 if (CMAKE_C_COMPILER_ID STREQUAL "PGI")
80 message(WARNING "Currently tested PGI compiler versions (up to 15.7) generate binaries that do not pass all regression test, and the generated binaries are significantly slower than with GCC, ICC or Clang. For now we do not recommend PGI beyond development testing - make sure to run the regressiontests.")
83 if(CMAKE_COMPILER_IS_GNUCC AND
84 (CMAKE_C_COMPILER_VERSION VERSION_LESS "4.9.0" OR CMAKE_SIZEOF_VOID_P EQUAL 8)
86 AND GMX_SIMD MATCHES "AVX" AND NOT GMX_SIMD STREQUAL AVX_128_FMA)
87 message(WARNING "GCC on Windows (GCC older than 4.9 or any version when compiling for 64bit) with AVX (other than AVX_128_FMA) crashes. Choose a different GMX_SIMD or a different compiler.") # GCC bug 49001, 54412.
90 if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND WIN32)
91 if(CMAKE_VERSION VERSION_LESS 3.0.0)
92 message(WARNING "Clang on Windows requires cmake 3.0.0")
94 if(CMAKE_C_COMPILER_VERSION VERSION_LESS 3.5.0)
95 message(WARNING "Clang on Windows requires clang 3.5.0")
99 if(CMAKE_C_COMPILER_ID MATCHES "Intel" AND CMAKE_C_COMPILER_VERSION VERSION_LESS "12.0.0")
100 message(WARNING "Intel compilers before 12.0.0 are not routinely tested, so there may be problems. Version 11.1 with SSE4.1 is known to produce incorrect results. It is highly recommended to use a more up-to-date compiler. If you choose to use this version, make sure you run the regressiontests.")
103 endmacro(gmx_test_compiler_problems)