cdavis5x created this revision. cdavis5x added reviewers: mstorsjo, rnk. Herald added subscribers: cfe-commits, christof, mgorny, dberris.
This switch only has an effect at link time. It changes the default compiler support library to `compiler-rt`. With `-nodefaultlibs`, this library won't get linked anyway; Clang actually warns about that. Repository: rUNW libunwind https://reviews.llvm.org/D51645 Files: CMakeLists.txt cmake/config-ix.cmake Index: cmake/config-ix.cmake =================================================================== --- cmake/config-ix.cmake +++ cmake/config-ix.cmake @@ -23,7 +23,6 @@ list(APPEND CMAKE_REQUIRED_LIBRARIES c) endif () if (LIBUNWIND_USE_COMPILER_RT) - list(APPEND CMAKE_REQUIRED_FLAGS -rtlib=compiler-rt) find_compiler_rt_library(builtins LIBUNWIND_BUILTINS_LIBRARY) list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBUNWIND_BUILTINS_LIBRARY}") elseif (LIBUNWIND_HAS_GCC_S_LIB) Index: CMakeLists.txt =================================================================== --- CMakeLists.txt +++ CMakeLists.txt @@ -234,7 +234,7 @@ # Configure compiler. include(config-ix) -if (LIBUNWIND_USE_COMPILER_RT) +if (LIBUNWIND_USE_COMPILER_RT AND NOT LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) list(APPEND LIBUNWIND_LINK_FLAGS "-rtlib=compiler-rt") endif()
Index: cmake/config-ix.cmake =================================================================== --- cmake/config-ix.cmake +++ cmake/config-ix.cmake @@ -23,7 +23,6 @@ list(APPEND CMAKE_REQUIRED_LIBRARIES c) endif () if (LIBUNWIND_USE_COMPILER_RT) - list(APPEND CMAKE_REQUIRED_FLAGS -rtlib=compiler-rt) find_compiler_rt_library(builtins LIBUNWIND_BUILTINS_LIBRARY) list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBUNWIND_BUILTINS_LIBRARY}") elseif (LIBUNWIND_HAS_GCC_S_LIB) Index: CMakeLists.txt =================================================================== --- CMakeLists.txt +++ CMakeLists.txt @@ -234,7 +234,7 @@ # Configure compiler. include(config-ix) -if (LIBUNWIND_USE_COMPILER_RT) +if (LIBUNWIND_USE_COMPILER_RT AND NOT LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) list(APPEND LIBUNWIND_LINK_FLAGS "-rtlib=compiler-rt") endif()
_______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits