# explicitly undefine it:
if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )
add_definitions( -UNDEBUG )
+ # Also remove /D NDEBUG to avoid MSVC warnings about conflicting defines.
+ string (REGEX REPLACE "(^| )[/-]D *NDEBUG($| )" " "
+ CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
endif()
else()
if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )
endif(UNIX)
endif(WIN32)
+function(add_flag_or_print_warning flag)
+ check_c_compiler_flag(${flag} C_SUPPORTS_FLAG)
+ check_cxx_compiler_flag(${flag} CXX_SUPPORTS_FLAG)
+ if (C_SUPPORTS_FLAG AND CXX_SUPPORTS_FLAG)
+ message(STATUS "Building with ${flag}")
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE)
+ else()
+ message(WARNING "${flag} is not supported.")
+ endif()
+endfunction()
+
+function(append value)
+ foreach(variable ${ARGN})
+ set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
+ endforeach(variable)
+endfunction()
+
+function(append_if condition value)
+ if (${condition})
+ foreach(variable ${ARGN})
+ set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
+ endforeach(variable)
+ endif()
+endfunction()
+
+macro(add_flag_if_supported flag)
+ check_c_compiler_flag(${flag} C_SUPPORTS_FLAG)
+ append_if(C_SUPPORTS_FLAG "${flag}" CMAKE_C_FLAGS)
+ check_cxx_compiler_flag(${flag} CXX_SUPPORTS_FLAG)
+ append_if(CXX_SUPPORTS_FLAG "${flag}" CMAKE_CXX_FLAGS)
+endmacro()
+
if( LLVM_ENABLE_PIC )
if( XCODE )
# Xcode has -mdynamic-no-pic on by default, which overrides -fPIC. I don't
elseif( WIN32 OR CYGWIN)
# On Windows all code is PIC. MinGW warns if -fPIC is used.
else()
- check_cxx_compiler_flag("-fPIC" SUPPORTS_FPIC_FLAG)
- if( SUPPORTS_FPIC_FLAG )
- message(STATUS "Building with -fPIC")
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
- else( SUPPORTS_FPIC_FLAG )
- message(WARNING "-fPIC not supported.")
- endif()
+ add_flag_or_print_warning("-fPIC")
if( WIN32 OR CYGWIN)
# MinGW warns if -fvisibility-inlines-hidden is used.
else()
check_cxx_compiler_flag("-fvisibility-inlines-hidden" SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG)
- if( SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG )
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility-inlines-hidden")
- endif()
- endif()
+ append_if(SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG "-fvisibility-inlines-hidden" CMAKE_CXX_FLAGS)
+ endif()
endif()
endif()
endif (LLVM_ENABLE_WERROR)
elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
if (LLVM_ENABLE_WARNINGS)
- add_llvm_definitions( -Wall -W -Wno-unused-parameter -Wwrite-strings )
+ append("-Wall -W -Wno-unused-parameter -Wwrite-strings" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
# Turn off missing field initializer warnings for gcc to avoid noise from
# false positives with empty {}. Turn them on otherwise (they're off by
check_cxx_compiler_flag("-Wmissing-field-initializers" CXX_SUPPORTS_MISSING_FIELD_INITIALIZERS_FLAG)
if (CXX_SUPPORTS_MISSING_FIELD_INITIALIZERS_FLAG)
if (CMAKE_COMPILER_IS_GNUCXX)
- add_llvm_definitions( -Wno-missing-field-initializers )
+ append("-Wno-missing-field-initializers" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
else()
- add_llvm_definitions( -Wmissing-field-initializers )
+ append("-Wmissing-field-initializers" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
endif()
endif()
- if (LLVM_ENABLE_PEDANTIC)
- add_llvm_definitions( -pedantic -Wno-long-long )
- check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
- if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG )
- set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" )
- endif()
- endif (LLVM_ENABLE_PEDANTIC)
+ append_if(LLVM_ENABLE_PEDANTIC "-pedantic -Wno-long-long" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
check_cxx_compiler_flag("-Werror -Wcovered-switch-default" CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG)
- if( CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG )
- set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wcovered-switch-default" )
- endif()
+ append_if(CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG "-Wcovered-switch-default" CMAKE_CXX_FLAGS)
check_c_compiler_flag("-Werror -Wcovered-switch-default" C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG)
- if( C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG )
- set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wcovered-switch-default" )
- endif()
- if (USE_NO_UNINITIALIZED)
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-uninitialized")
- endif()
- if (USE_NO_MAYBE_UNINITIALIZED)
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-maybe-uninitialized")
- endif()
+ append_if(C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG "-Wcovered-switch-default" CMAKE_C_FLAGS)
+ append_if(USE_NO_UNINITIALIZED "-Wno-uninitialized" CMAKE_CXX_FLAGS)
+ append_if(USE_NO_MAYBE_UNINITIALIZED "-Wno-maybe-uninitialized" CMAKE_CXX_FLAGS)
+ check_cxx_compiler_flag("-Werror -Wnon-virtual-dtor" CXX_SUPPORTS_NON_VIRTUAL_DTOR_FLAG)
+ append_if(CXX_SUPPORTS_NON_VIRTUAL_DTOR_FLAG "-Wnon-virtual-dtor" CMAKE_CXX_FLAGS)
endif (LLVM_ENABLE_WARNINGS)
if (LLVM_ENABLE_WERROR)
add_llvm_definitions( -Werror )
endif (LLVM_ENABLE_WERROR)
endif( MSVC )
+macro(append_common_sanitizer_flags)
+ # Append -fno-omit-frame-pointer and turn on debug info to get better
+ # stack traces.
+ add_flag_if_supported("-fno-omit-frame-pointer")
+ if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" AND
+ NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO")
+ add_flag_if_supported("-gline-tables-only")
+ endif()
+endmacro()
+
+# Turn on sanitizers if necessary.
+if(LLVM_USE_SANITIZER)
+ if (LLVM_ON_UNIX)
+ if (LLVM_USE_SANITIZER STREQUAL "Address")
+ append_common_sanitizer_flags()
+ add_flag_or_print_warning("-fsanitize=address")
+ elseif (LLVM_USE_SANITIZER MATCHES "Memory(WithOrigins)?")
+ append_common_sanitizer_flags()
+ add_flag_or_print_warning("-fsanitize=memory")
+ if(LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins")
+ add_flag_or_print_warning("-fsanitize-memory-track-origins")
+ endif()
+ else()
+ message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}")
+ endif()
+ else()
+ message(WARNING "LLVM_USE_SANITIZER is not supported on this platform.")
+ endif()
+endif()
+
add_llvm_definitions( -D__STDC_CONSTANT_MACROS )
add_llvm_definitions( -D__STDC_FORMAT_MACROS )
add_llvm_definitions( -D__STDC_LIMIT_MACROS )
projects / oota-llvm.git / blobdiff