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[libunwind] Refactor CMake flag checks to match libc++ and libc++abi 

libunwind was using its own set of macros/functions for flag checking
which was similar but different from libc++ and libc++abi. This made
it difficult to replicate the same checks across projects, in fact
there were some checks that appear to have been copy & pasted from
another project and that were broken in the standalone libunwind build.
This change refactors flag checks to match libc++ and libc++abi using
a copy of HandleLibunwindFlags.cmake which is derived from the versions
used by the other projects. This also paves a road to deduplicating and
unifying HandleLibunwindFlags.cmake, HandleLibcxxabiFlags.cmake and
HandleLibcxxFlags.cmake post monorepo switch.

Differential Revision: https://reviews.llvm.org/D68855

llvm-svn: 374606
This commit is contained in:
Petr Hosek 2019-10-11 22:22:29 +00:00
parent e2d104f64c
commit 20da3bdb96
4 changed files with 371 additions and 132 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

107
libunwind/CMakeLists.txt
View File

@ -213,28 +213,14 @@ set(LIBUNWIND_CXX_FLAGS "")
set(LIBUNWIND_COMPILE_FLAGS "")
set(LIBUNWIND_LINK_FLAGS "")
# Include macros for adding and removing libunwind flags.
include(HandleLibunwindFlags)
#===============================================================================
# Setup Compiler Flags
#===============================================================================
# Get required flags.
macro(unwind_append_if list condition var)
if (${condition})
list(APPEND ${list} ${var})
endif()
endmacro()
macro(add_target_flags)
foreach(value ${ARGN})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${value}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${value}")
list(APPEND LIBUNWIND_COMPILE_FLAGS ${value})
list(APPEND LIBUNWIND_LINK_FLAGS ${value})
endforeach()
endmacro()
macro(add_target_flags_if condition)
if (${condition})
add_target_flags(${ARGN})
endif()
endmacro()
add_target_flags_if(LIBUNWIND_BUILD_32_BITS "-m32")
if(LIBUNWIND_TARGET_TRIPLE)
@ -264,83 +250,86 @@ if (LIBUNWIND_USE_COMPILER_RT AND NOT LIBUNWIND_HAS_NODEFAULTLIBS_FLAG)
list(APPEND LIBUNWIND_LINK_FLAGS "-rtlib=compiler-rt")
endif()
#===============================================================================
# Setup Compiler Flags
#===============================================================================
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WERROR_FLAG -Werror=return-type)
add_compile_flags_if_supported(-Werror=return-type)
# Get warning flags
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_W_FLAG -W)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WALL_FLAG -Wall)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WCHAR_SUBSCRIPTS_FLAG -Wchar-subscripts)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WCONVERSION_FLAG -Wconversion)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WMISMATCHED_TAGS_FLAG -Wmismatched-tags)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WMISSING_BRACES_FLAG -Wmissing-braces)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNEWLINE_EOF_FLAG -Wnewline-eof)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNO_UNUSED_FUNCTION_FLAG -Wno-unused-function)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSHADOW_FLAG -Wshadow)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSHORTEN_64_TO_32_FLAG -Wshorten-64-to-32)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSIGN_COMPARE_FLAG -Wsign-compare)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSIGN_CONVERSION_FLAG -Wsign-conversion)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSTRICT_ALIASING_FLAG -Wstrict-aliasing=2)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-overflow=4)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNDEF_FLAG -Wundef)
add_compile_flags_if_supported(-W)
add_compile_flags_if_supported(-Wall)
add_compile_flags_if_supported(-Wchar-subscripts)
add_compile_flags_if_supported(-Wconversion)
add_compile_flags_if_supported(-Wmismatched-tags)
add_compile_flags_if_supported(-Wmissing-braces)
add_compile_flags_if_supported(-Wnewline-eof)
add_compile_flags_if_supported(-Wno-unused-function)
add_compile_flags_if_supported(-Wshadow)
add_compile_flags_if_supported(-Wshorten-64-to-32)
add_compile_flags_if_supported(-Wsign-compare)
add_compile_flags_if_supported(-Wsign-conversion)
add_compile_flags_if_supported(-Wstrict-aliasing=2)
add_compile_flags_if_supported(-Wstrict-overflow=4)
add_compile_flags_if_supported(-Wunused-parameter)
add_compile_flags_if_supported(-Wunused-variable)
add_compile_flags_if_supported(-Wwrite-strings)
add_compile_flags_if_supported(-Wundef)
if (LIBUNWIND_ENABLE_WERROR)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WERROR_FLAG -Werror)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WX_FLAG -WX)
add_compile_flags_if_supported(-Werror)
add_compile_flags_if_supported(-WX)
else()
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNO_ERROR_FLAG -Wno-error)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_NO_WX_FLAG -WX-)
add_compile_flags_if_supported(-Wno-error)
add_compile_flags_if_supported(-WX-)
endif()
if (LIBUNWIND_ENABLE_PEDANTIC)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_PEDANTIC_FLAG -pedantic)
add_compile_flags_if_supported(-pedantic)
endif()
# Get feature flags.
# Exceptions
# Catches C++ exceptions only and tells the compiler to assume that extern C
# functions never throw a C++ exception.
unwind_append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_FSTRICT_ALIASING_FLAG -fstrict-aliasing)
unwind_append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_EHSC_FLAG -EHsc)
add_cxx_compile_flags_if_supported(-fstrict-aliasing)
add_cxx_compile_flags_if_supported(-EHsc)
unwind_append_if(LIBUNWIND_C_FLAGS LIBUNWIND_HAS_FUNWIND_TABLES -funwind-tables)
add_c_compile_flags_if_supported(-funwind-tables)
add_cxx_compile_flags_if_supported(-fno-exceptions)
add_cxx_compile_flags_if_supported(-fno-rtti)
# Ensure that we don't depend on C++ standard library.
unwind_append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_NOSTDINCXX_FLAG -nostdinc++)
if (LIBCXXABI_HAS_NOSTDINCXX_FLAG)
list(APPEND LIBUNWIND_COMPILE_FLAGS -nostdinc++)
# Remove -stdlib flags to prevent them from causing an unused flag warning.
string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
endif()
# Assert
string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
if (LIBUNWIND_ENABLE_ASSERTIONS)
# MSVC doesn't like _DEBUG on release builds. See PR 4379.
if (NOT MSVC)
list(APPEND LIBUNWIND_COMPILE_FLAGS -D_DEBUG)
add_compile_flags(-D_DEBUG)
endif()
# On Release builds cmake automatically defines NDEBUG, so we
# explicitly undefine it:
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
list(APPEND LIBUNWIND_COMPILE_FLAGS -UNDEBUG)
add_compile_flags(-UNDEBUG)
endif()
else()
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
list(APPEND LIBUNWIND_COMPILE_FLAGS -DNDEBUG)
add_compile_flags(-DNDEBUG)
endif()
endif()
# Cross-unwinding
if (NOT LIBUNWIND_ENABLE_CROSS_UNWINDING)
list(APPEND LIBUNWIND_COMPILE_FLAGS -D_LIBUNWIND_IS_NATIVE_ONLY)
add_compile_flags(-D_LIBUNWIND_IS_NATIVE_ONLY)
endif()
# Threading-support
if (NOT LIBUNWIND_ENABLE_THREADS)
list(APPEND LIBUNWIND_COMPILE_FLAGS -D_LIBUNWIND_HAS_NO_THREADS)
add_compile_flags(-D_LIBUNWIND_HAS_NO_THREADS)
endif()
# ARM WMMX register support
@ -349,7 +338,7 @@ if (LIBUNWIND_ENABLE_ARM_WMMX)
# define this macro for any supported target at present. Therefore, here we
# provide the option to explicitly enable support for WMMX registers in the
# unwinder.
list(APPEND LIBUNWIND_COMPILE_FLAGS -D__ARM_WMMX)
add_compile_flags(-D__ARM_WMMX)
endif()
# This is the _ONLY_ place where add_definitions is called.

272
libunwind/cmake/Modules/HandleLibunwindFlags.cmake Normal file
View File

@ -0,0 +1,272 @@
# HandleLibcxxFlags - A set of macros used to setup the flags used to compile
# and link libc++abi. These macros add flags to the following CMake variables.
# - LIBUNWIND_COMPILE_FLAGS: flags used to compile libunwind
# - LIBUNWIND_LINK_FLAGS: flags used to link libunwind
# - LIBUNWIND_LIBRARIES: libraries to link libunwind to.
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
unset(add_flag_if_supported)
# Mangle the name of a compiler flag into a valid CMake identifier.
# Ex: --std=c++11 -> STD_EQ_CXX11
macro(mangle_name str output)
string(STRIP "${str}" strippedStr)
string(REGEX REPLACE "^/" "" strippedStr "${strippedStr}")
string(REGEX REPLACE "^-+" "" strippedStr "${strippedStr}")
string(REGEX REPLACE "-+$" "" strippedStr "${strippedStr}")
string(REPLACE "-" "_" strippedStr "${strippedStr}")
string(REPLACE "=" "_EQ_" strippedStr "${strippedStr}")
string(REPLACE "+" "X" strippedStr "${strippedStr}")
string(TOUPPER "${strippedStr}" ${output})
endmacro()
# Remove a list of flags from all CMake variables that affect compile flags.
# This can be used to remove unwanted flags specified on the command line
# or added in other parts of LLVM's cmake configuration.
macro(remove_flags)
foreach(var ${ARGN})
string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL}")
string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
string(REPLACE "${var}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
string(REPLACE "${var}" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
string(REPLACE "${var}" "" CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
string(REPLACE "${var}" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
string(REPLACE "${var}" "" CMAKE_SHARED_MODULE_FLAGS "${CMAKE_SHARED_MODULE_FLAGS}")
remove_definitions(${var})
endforeach()
endmacro(remove_flags)
macro(check_flag_supported flag)
mangle_name("${flag}" flagname)
check_cxx_compiler_flag("${flag}" "LIBUNWIND_SUPPORTS_${flagname}_FLAG")
endmacro()
macro(append_flags DEST)
foreach(value ${ARGN})
list(APPEND ${DEST} ${value})
list(APPEND ${DEST} ${value})
endforeach()
endmacro()
# If the specified 'condition' is true then append the specified list of flags to DEST
macro(append_flags_if condition DEST)
if (${condition})
list(APPEND ${DEST} ${ARGN})
endif()
endmacro()
# Add each flag in the list specified by DEST if that flag is supported by the current compiler.
macro(append_flags_if_supported DEST)
foreach(flag ${ARGN})
mangle_name("${flag}" flagname)
check_cxx_compiler_flag("${flag}" "LIBUNWIND_SUPPORTS_${flagname}_FLAG")
append_flags_if(LIBUNWIND_SUPPORTS_${flagname}_FLAG ${DEST} ${flag})
endforeach()
endmacro()
# Add a macro definition if condition is true.
macro(define_if condition def)
if (${condition})
add_definitions(${def})
endif()
endmacro()
# Add a macro definition if condition is not true.
macro(define_if_not condition def)
if (NOT ${condition})
add_definitions(${def})
endif()
endmacro()
# Add a macro definition to the __config_site file if the specified condition
# is 'true'. Note that '-D${def}' is not added. Instead it is expected that
# the build include the '__config_site' header.
macro(config_define_if condition def)
if (${condition})
set(${def} ON)
set(LIBUNWIND_NEEDS_SITE_CONFIG ON)
endif()
endmacro()
macro(config_define_if_not condition def)
if (NOT ${condition})
set(${def} ON)
set(LIBUNWIND_NEEDS_SITE_CONFIG ON)
endif()
endmacro()
macro(config_define value def)
set(${def} ${value})
set(LIBUNWIND_NEEDS_SITE_CONFIG ON)
endmacro()
# Add a list of flags to all of 'CMAKE_CXX_FLAGS', 'CMAKE_C_FLAGS',
# 'LIBUNWIND_COMPILE_FLAGS' and 'LIBUNWIND_LINK_FLAGS'.
macro(add_target_flags)
foreach(value ${ARGN})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${value}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${value}")
list(APPEND LIBUNWIND_COMPILE_FLAGS ${value})
list(APPEND LIBUNWIND_LINK_FLAGS ${value})
endforeach()
endmacro()
# If the specified 'condition' is true then add a list of flags to
# all of 'CMAKE_CXX_FLAGS', 'CMAKE_C_FLAGS', 'LIBUNWIND_COMPILE_FLAGS'
# and 'LIBUNWIND_LINK_FLAGS'.
macro(add_target_flags_if condition)
if (${condition})
add_target_flags(${ARGN})
endif()
endmacro()
# Add a specified list of flags to both 'LIBUNWIND_COMPILE_FLAGS' and
# 'LIBUNWIND_LINK_FLAGS'.
macro(add_flags)
foreach(value ${ARGN})
list(APPEND LIBUNWIND_COMPILE_FLAGS ${value})
list(APPEND LIBUNWIND_LINK_FLAGS ${value})
endforeach()
endmacro()
# If the specified 'condition' is true then add a list of flags to both
# 'LIBUNWIND_COMPILE_FLAGS' and 'LIBUNWIND_LINK_FLAGS'.
macro(add_flags_if condition)
if (${condition})
add_flags(${ARGN})
endif()
endmacro()
# Add each flag in the list to LIBUNWIND_COMPILE_FLAGS and LIBUNWIND_LINK_FLAGS
# if that flag is supported by the current compiler.
macro(add_flags_if_supported)
foreach(flag ${ARGN})
mangle_name("${flag}" flagname)
check_cxx_compiler_flag("${flag}" "LIBUNWIND_SUPPORTS_${flagname}_FLAG")
add_flags_if(LIBUNWIND_SUPPORTS_${flagname}_FLAG ${flag})
endforeach()
endmacro()
# Add a list of flags to 'LIBUNWIND_COMPILE_FLAGS'.
macro(add_compile_flags)
foreach(f ${ARGN})
list(APPEND LIBUNWIND_COMPILE_FLAGS ${f})
endforeach()
endmacro()
# If 'condition' is true then add the specified list of flags to
# 'LIBUNWIND_COMPILE_FLAGS'
macro(add_compile_flags_if condition)
if (${condition})
add_compile_flags(${ARGN})
endif()
endmacro()
# For each specified flag, add that flag to 'LIBUNWIND_COMPILE_FLAGS' if the
# flag is supported by the C++ compiler.
macro(add_compile_flags_if_supported)
foreach(flag ${ARGN})
mangle_name("${flag}" flagname)
check_cxx_compiler_flag("${flag}" "LIBUNWIND_SUPPORTS_${flagname}_FLAG")
add_compile_flags_if(LIBUNWIND_SUPPORTS_${flagname}_FLAG ${flag})
endforeach()
endmacro()
# Add a list of flags to 'LIBUNWIND_C_FLAGS'.
macro(add_c_flags)
foreach(f ${ARGN})
list(APPEND LIBUNWIND_C_FLAGS ${f})
endforeach()
endmacro()
# If 'condition' is true then add the specified list of flags to
# 'LIBUNWIND_C_FLAGS'
macro(add_c_flags_if condition)
if (${condition})
add_c_flags(${ARGN})
endif()
endmacro()
# For each specified flag, add that flag to 'LIBUNWIND_C_FLAGS' if the
# flag is supported by the C compiler.
macro(add_c_compile_flags_if_supported)
foreach(flag ${ARGN})
mangle_name("${flag}" flagname)
check_c_compiler_flag("${flag}" "LIBUNWIND_SUPPORTS_${flagname}_FLAG")
add_c_flags_if(LIBUNWIND_SUPPORTS_${flagname}_FLAG ${flag})
endforeach()
endmacro()
# Add a list of flags to 'LIBUNWIND_CXX_FLAGS'.
macro(add_cxx_flags)
foreach(f ${ARGN})
list(APPEND LIBUNWIND_CXX_FLAGS ${f})
endforeach()
endmacro()
# If 'condition' is true then add the specified list of flags to
# 'LIBUNWIND_CXX_FLAGS'
macro(add_cxx_flags_if condition)
if (${condition})
add_cxx_flags(${ARGN})
endif()
endmacro()
# For each specified flag, add that flag to 'LIBUNWIND_CXX_FLAGS' if the
# flag is supported by the C compiler.
macro(add_cxx_compile_flags_if_supported)
foreach(flag ${ARGN})
mangle_name("${flag}" flagname)
check_cxx_compiler_flag("${flag}" "LIBUNWIND_SUPPORTS_${flagname}_FLAG")
add_cxx_flags_if(LIBUNWIND_SUPPORTS_${flagname}_FLAG ${flag})
endforeach()
endmacro()
# Add a list of flags to 'LIBUNWIND_LINK_FLAGS'.
macro(add_link_flags)
foreach(f ${ARGN})
list(APPEND LIBUNWIND_LINK_FLAGS ${f})
endforeach()
endmacro()
# If 'condition' is true then add the specified list of flags to
# 'LIBUNWIND_LINK_FLAGS'
macro(add_link_flags_if condition)
if (${condition})
add_link_flags(${ARGN})
endif()
endmacro()
# For each specified flag, add that flag to 'LIBUNWIND_LINK_FLAGS' if the
# flag is supported by the C++ compiler.
macro(add_link_flags_if_supported)
foreach(flag ${ARGN})
mangle_name("${flag}" flagname)
check_cxx_compiler_flag("${flag}" "LIBUNWIND_SUPPORTS_${flagname}_FLAG")
add_link_flags_if(LIBUNWIND_SUPPORTS_${flagname}_FLAG ${flag})
endforeach()
endmacro()
# Add a list of libraries or link flags to 'LIBUNWIND_LIBRARIES'.
macro(add_library_flags)
foreach(lib ${ARGN})
list(APPEND LIBUNWIND_LIBRARIES ${lib})
endforeach()
endmacro()
# if 'condition' is true then add the specified list of libraries and flags
# to 'LIBUNWIND_LIBRARIES'.
macro(add_library_flags_if condition)
if(${condition})
add_library_flags(${ARGN})
endif()
endmacro()
# Turn a comma separated CMake list into a space separated string.
macro(split_list listname)
string(REPLACE ";" " " ${listname} "${${listname}}")
endmacro()

39
libunwind/cmake/config-ix.cmake
View File

@ -68,43 +68,8 @@ int main() { return 0; }
endif()
# Check compiler flags
check_c_compiler_flag(-funwind-tables LIBUNWIND_HAS_FUNWIND_TABLES)
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(-nostdinc++ LIBUNWIND_HAS_NOSTDINCXX_FLAG)
check_cxx_compiler_flag(-Wall LIBUNWIND_HAS_WALL_FLAG)
check_cxx_compiler_flag(-W LIBUNWIND_HAS_W_FLAG)
check_cxx_compiler_flag(-Wno-unused-function LIBUNWIND_HAS_WNO_UNUSED_FUNCTION_FLAG)
check_cxx_compiler_flag(-Wunused-variable LIBUNWIND_HAS_WUNUSED_VARIABLE_FLAG)
check_cxx_compiler_flag(-Wunused-parameter LIBUNWIND_HAS_WUNUSED_PARAMETER_FLAG)
check_cxx_compiler_flag(-Wstrict-aliasing LIBUNWIND_HAS_WSTRICT_ALIASING_FLAG)
check_cxx_compiler_flag(-Wstrict-overflow LIBUNWIND_HAS_WSTRICT_OVERFLOW_FLAG)
check_cxx_compiler_flag(-Wwrite-strings LIBUNWIND_HAS_WWRITE_STRINGS_FLAG)
check_cxx_compiler_flag(-Wchar-subscripts LIBUNWIND_HAS_WCHAR_SUBSCRIPTS_FLAG)
check_cxx_compiler_flag(-Wmismatched-tags LIBUNWIND_HAS_WMISMATCHED_TAGS_FLAG)
check_cxx_compiler_flag(-Wmissing-braces LIBUNWIND_HAS_WMISSING_BRACES_FLAG)
check_cxx_compiler_flag(-Wshorten-64-to-32 LIBUNWIND_HAS_WSHORTEN_64_TO_32_FLAG)
check_cxx_compiler_flag(-Wsign-conversion LIBUNWIND_HAS_WSIGN_CONVERSION_FLAG)
check_cxx_compiler_flag(-Wsign-compare LIBUNWIND_HAS_WSIGN_COMPARE_FLAG)
check_cxx_compiler_flag(-Wshadow LIBUNWIND_HAS_WSHADOW_FLAG)
check_cxx_compiler_flag(-Wconversion LIBUNWIND_HAS_WCONVERSION_FLAG)
check_cxx_compiler_flag(-Wnewline-eof LIBUNWIND_HAS_WNEWLINE_EOF_FLAG)
check_cxx_compiler_flag(-Wundef LIBUNWIND_HAS_WUNDEF_FLAG)
check_cxx_compiler_flag(-pedantic LIBUNWIND_HAS_PEDANTIC_FLAG)
check_cxx_compiler_flag(-Werror LIBUNWIND_HAS_WERROR_FLAG)
check_cxx_compiler_flag(-Wno-error LIBUNWIND_HAS_WNO_ERROR_FLAG)
check_cxx_compiler_flag(/WX LIBUNWIND_HAS_WX_FLAG)
check_cxx_compiler_flag(/WX- LIBUNWIND_HAS_NO_WX_FLAG)
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_cxx_compiler_flag(-nostdinc++ LIBUNWIND_HAS_NOSTDINCXX_FLAG)
# Check libraries
check_library_exists(dl dladdr "" LIBUNWIND_HAS_DL_LIB)
check_library_exists(pthread pthread_once "" LIBUNWIND_HAS_PTHREAD_LIB)

85
libunwind/src/CMakeLists.txt
View File

@ -5,7 +5,11 @@ set(LIBUNWIND_CXX_SOURCES
Unwind-EHABI.cpp
Unwind-seh.cpp
)
unwind_append_if(LIBUNWIND_CXX_SOURCES APPLE Unwind_AppleExtras.cpp)
if(APPLE)
list(APPEND LIBUNWIND_CXX_SOURCES
Unwind_AppleExtras.cpp
)
endif()
set(LIBUNWIND_C_SOURCES
UnwindLevel1.c
@ -39,10 +43,11 @@ set(LIBUNWIND_HEADERS
../include/libunwind.h
../include/unwind.h
)
unwind_append_if(LIBUNWIND_HEADERS APPLE
if(APPLE)
list(APPEND LIBUNWIND_HEADERS
../include/mach-o/compact_unwind_encoding.h
)
endif()
if (MSVC_IDE)
# Force them all into the headers dir on MSVC, otherwise they end up at
@ -56,32 +61,28 @@ set(LIBUNWIND_SOURCES
${LIBUNWIND_ASM_SOURCES})
# Generate library list.
set(libraries)
unwind_append_if(libraries LIBUNWIND_HAS_C_LIB c)
add_library_flags_if(LIBUNWIND_HAS_C_LIB c)
if (LIBUNWIND_USE_COMPILER_RT)
list(APPEND libraries "${LIBUNWIND_BUILTINS_LIBRARY}")
add_library_flags("${LIBUNWIND_BUILTINS_LIBRARY}")
else()
unwind_append_if(libraries LIBUNWIND_HAS_GCC_S_LIB gcc_s)
unwind_append_if(libraries LIBUNWIND_HAS_GCC_LIB gcc)
add_library_flags_if(LIBUNWIND_HAS_GCC_S_LIB gcc_s)
add_library_flags_if(LIBUNWIND_HAS_GCC_LIB gcc)
endif()
unwind_append_if(libraries LIBUNWIND_HAS_DL_LIB dl)
add_library_flags_if(LIBUNWIND_HAS_DL_LIB dl)
if (LIBUNWIND_ENABLE_THREADS)
unwind_append_if(libraries LIBUNWIND_HAS_PTHREAD_LIB pthread)
unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_WEAK_PTHREAD_LIB -DLIBUNWIND_USE_WEAK_PTHREAD=1)
add_library_flags_if(LIBUNWIND_HAS_PTHREAD_LIB pthread)
add_compile_flags_if(LIBUNWIND_WEAK_PTHREAD_LIB -DLIBUNWIND_USE_WEAK_PTHREAD=1)
endif()
# Setup flags.
unwind_append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_NO_RTTI_FLAG -fno-rtti)
unwind_append_if(LIBUNWIND_LINK_FLAGS LIBUNWIND_HAS_NODEFAULTLIBS_FLAG -nodefaultlibs)
add_link_flags_if_supported(-nodefaultlibs)
# MINGW_LIBRARIES is defined in config-ix.cmake
unwind_append_if(libraries MINGW "${MINGW_LIBRARIES}")
add_library_flags_if(MINGW "${MINGW_LIBRARIES}")
if (LIBUNWIND_HAS_NO_EXCEPTIONS_FLAG AND LIBUNWIND_HAS_FUNWIND_TABLES)
list(APPEND LIBUNWIND_COMPILE_FLAGS -fno-exceptions)
list(APPEND LIBUNWIND_COMPILE_FLAGS -funwind-tables)
elseif (LIBUNWIND_ENABLE_SHARED)
if (LIBUNWIND_ENABLE_SHARED AND
NOT (LIBUNWIND_SUPPORTS_FNO_EXCEPTIONS_FLAG AND
LIBUNWIND_SUPPORTS_FUNWIND_TABLES_FLAG))
message(FATAL_ERROR
"Compiler doesn't support generation of unwind tables if exception "
"support is disabled. Building libunwind DSO with runtime dependency "
@ -89,15 +90,11 @@ elseif (LIBUNWIND_ENABLE_SHARED)
endif()
if (APPLE)
list(APPEND LIBUNWIND_COMPILE_FLAGS "-U__STRICT_ANSI__")
list(APPEND LIBUNWIND_LINK_FLAGS
"-compatibility_version 1"
"-install_name /usr/lib/libunwind.1.dylib")
add_compile_flags("-U__STRICT_ANSI__")
add_link_flags("-compatibility_version 1" "-install_name /usr/lib/libunwind.1.dylib")
if (CMAKE_OSX_DEPLOYMENT_TARGET STREQUAL "10.6")
list(APPEND LIBUNWIND_LINK_FLAGS
"-current_version ${LIBUNWIND_VERSION}"
"/usr/lib/libSystem.B.dylib")
add_link_flags("-current_version ${LIBUNWIND_VERSION}" "/usr/lib/libSystem.B.dylib")
endif ()
endif ()
@ -117,14 +114,23 @@ if (LIBUNWIND_ENABLE_SHARED)
if(COMMAND llvm_setup_rpath)
llvm_setup_rpath(unwind_shared)
endif()
target_link_libraries(unwind_shared PRIVATE ${libraries})
target_link_libraries(unwind_shared PRIVATE ${LIBUNWIND_LIBRARIES})
set_target_properties(unwind_shared
PROPERTIES
COMPILE_FLAGS "${LIBUNWIND_COMPILE_FLAGS}"
LINK_FLAGS "${LIBUNWIND_LINK_FLAGS}"
OUTPUT_NAME "unwind"
VERSION "1.0"
SOVERSION "1")
CXX_STANDARD
11
CXX_STANDARD_REQUIRED
ON
COMPILE_FLAGS
"${LIBUNWIND_COMPILE_FLAGS}"
LINK_FLAGS
"${LIBUNWIND_LINK_FLAGS}"
OUTPUT_NAME
"unwind"
VERSION
"1.0"
SOVERSION
"1")
list(APPEND LIBUNWIND_BUILD_TARGETS "unwind_shared")
if (LIBUNWIND_INSTALL_SHARED_LIBRARY)
list(APPEND LIBUNWIND_INSTALL_TARGETS "unwind_shared")
@ -134,12 +140,19 @@ endif()
# Build the static library.
if (LIBUNWIND_ENABLE_STATIC)
add_library(unwind_static STATIC ${LIBUNWIND_SOURCES} ${LIBUNWIND_HEADERS})
target_link_libraries(unwind_static PRIVATE ${libraries})
target_link_libraries(unwind_static PRIVATE ${LIBUNWIND_LIBRARIES})
set_target_properties(unwind_static
PROPERTIES
COMPILE_FLAGS "${LIBUNWIND_COMPILE_FLAGS}"
LINK_FLAGS "${LIBUNWIND_LINK_FLAGS}"
OUTPUT_NAME "unwind")
CXX_STANDARD
11
CXX_STANDARD_REQUIRED
ON
COMPILE_FLAGS
"${LIBUNWIND_COMPILE_FLAGS}"
LINK_FLAGS
"${LIBUNWIND_LINK_FLAGS}"
OUTPUT_NAME
"unwind")
if(LIBUNWIND_HERMETIC_STATIC_LIBRARY)
append_flags_if_supported(UNWIND_STATIC_LIBRARY_FLAGS -fvisibility=hidden)