diff options
Diffstat (limited to 'lib/cmake/llvm/FindLibpfm.cmake')
| -rw-r--r-- | lib/cmake/llvm/FindLibpfm.cmake | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/cmake/llvm/FindLibpfm.cmake b/lib/cmake/llvm/FindLibpfm.cmake index 202bb03..38cf3af 100644 --- a/lib/cmake/llvm/FindLibpfm.cmake +++ b/lib/cmake/llvm/FindLibpfm.cmake @@ -7,6 +7,7 @@ include(CheckIncludeFile) include(CheckLibraryExists) +include(CheckCXXSourceCompiles) if (LLVM_ENABLE_LIBPFM) check_library_exists(pfm pfm_initialize "" HAVE_LIBPFM_INITIALIZE) @@ -16,6 +17,19 @@ if (LLVM_ENABLE_LIBPFM) check_include_file(perfmon/pfmlib_perf_event.h HAVE_PERFMON_PFMLIB_PERF_EVENT_H) if(HAVE_PERFMON_PERF_EVENT_H AND HAVE_PERFMON_PFMLIB_H AND HAVE_PERFMON_PFMLIB_PERF_EVENT_H) set(HAVE_LIBPFM 1) + # Check to see if perf_branch_entry has the field 'cycles'. + # We couldn't use CheckStructHasMember here because 'cycles' is a bit field which is not + # supported by CheckStructHasMember. + CHECK_CXX_SOURCE_COMPILES(" + #include <perfmon/perf_event.h> + int main() { + perf_branch_entry entry; + entry.cycles = 2; + return 0; + }" COMPILE_WITH_CYCLES) + if(COMPILE_WITH_CYCLES) + set(LIBPFM_HAS_FIELD_CYCLES 1) + endif() endif() endif() endif() |