diff options
Diffstat (limited to 'cmake/config-ix.cmake')
| -rw-r--r-- | cmake/config-ix.cmake | 41 |
1 files changed, 39 insertions, 2 deletions
diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake index a36f978..40a5dd1 100644 --- a/cmake/config-ix.cmake +++ b/cmake/config-ix.cmake @@ -3,13 +3,46 @@ include(CheckCCompilerFlag) include(CheckCXXCompilerFlag) include(CheckLibraryExists) +check_library_exists(c fopen "" LIBUNWIND_HAS_C_LIB) + +if (NOT LIBUNWIND_USE_COMPILER_RT) + check_library_exists(gcc_s __gcc_personality_v0 "" LIBUNWIND_HAS_GCC_S_LIB) +endif() + +# libunwind is built with -nodefaultlibs, so we want all our checks to also +# use this option, otherwise we may end up with an inconsistency between +# the flags we think we require during configuration (if the checks are +# performed without -nodefaultlibs) and the flags that are actually +# required during compilation (which has the -nodefaultlibs). libc is +# required for the link to go through. We remove sanitizers from the +# configuration checks to avoid spurious link errors. +check_c_compiler_flag(-nodefaultlibs LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) +if (LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) + set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs") + if (LIBUNWIND_HAS_C_LIB) + list(APPEND CMAKE_REQUIRED_LIBRARIES c) + endif () + if (LIBUNWIND_USE_COMPILER_RT) + list(APPEND CMAKE_REQUIRED_FLAGS -rtlib=compiler-rt) + find_compiler_rt_library(builtins LIBUNWIND_BUILTINS_LIBRARY) + list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBUNWIND_BUILTINS_LIBRARY}") + elseif (LIBUNWIND_HAS_GCC_S_LIB) + list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s) + endif () + if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize) + set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize=all") + endif () + if (CMAKE_C_FLAGS MATCHES -fsanitize-coverage OR CMAKE_CXX_FLAGS MATCHES -fsanitize-coverage) + set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize-coverage=edge,trace-cmp,indirect-calls,8bit-counters") + endif () +endif () + # Check compiler flags check_c_compiler_flag(-funwind-tables LIBUNWIND_HAS_FUNWIND_TABLES) check_cxx_compiler_flag(-fPIC LIBUNWIND_HAS_FPIC_FLAG) check_cxx_compiler_flag(-fno-exceptions LIBUNWIND_HAS_NO_EXCEPTIONS_FLAG) check_cxx_compiler_flag(-fno-rtti LIBUNWIND_HAS_NO_RTTI_FLAG) check_cxx_compiler_flag(-fstrict-aliasing LIBUNWIND_HAS_FSTRICT_ALIASING_FLAG) -check_cxx_compiler_flag(-nodefaultlibs LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) check_cxx_compiler_flag(-nostdinc++ LIBUNWIND_HAS_NOSTDINCXX_FLAG) check_cxx_compiler_flag(-Wall LIBUNWIND_HAS_WALL_FLAG) check_cxx_compiler_flag(-W LIBUNWIND_HAS_W_FLAG) @@ -38,8 +71,12 @@ check_cxx_compiler_flag(/EHsc LIBUNWIND_HAS_EHSC_FLAG) check_cxx_compiler_flag(/EHs- LIBUNWIND_HAS_NO_EHS_FLAG) check_cxx_compiler_flag(/EHa- LIBUNWIND_HAS_NO_EHA_FLAG) check_cxx_compiler_flag(/GR- LIBUNWIND_HAS_NO_GR_FLAG) +check_cxx_compiler_flag(-std=c++11 LIBUNWIND_HAS_STD_CXX11) + +if(LIBUNWIND_HAS_STD_CXX11) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") +endif() -check_library_exists(c printf "" LIBUNWIND_HAS_C_LIB) check_library_exists(dl dladdr "" LIBUNWIND_HAS_DL_LIB) check_library_exists(pthread pthread_once "" LIBUNWIND_HAS_PTHREAD_LIB) |