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llvm-project/lldb/cmake/modules/LLDBConfig.cmake

420 lines
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CMake
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include(CheckCXXSymbolExists)
set(LLDB_PROJECT_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
set(LLDB_SOURCE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/source")
set(LLDB_INCLUDE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/include")
set(LLDB_LINKER_SUPPORTS_GROUPS OFF)
if (LLVM_COMPILER_IS_GCC_COMPATIBLE AND NOT "${CMAKE_SYSTEM_NAME}" MATCHES "Darwin")
# The Darwin linker doesn't understand --start-group/--end-group.
set(LLDB_LINKER_SUPPORTS_GROUPS ON)
endif()
if ( CMAKE_SYSTEM_NAME MATCHES "Windows" )
set(LLDB_DEFAULT_DISABLE_PYTHON 0)
set(LLDB_DEFAULT_DISABLE_CURSES 1)
else()
if ( __ANDROID_NDK__ )
set(LLDB_DEFAULT_DISABLE_PYTHON 1)
set(LLDB_DEFAULT_DISABLE_CURSES 1)
else()
set(LLDB_DEFAULT_DISABLE_PYTHON 0)
set(LLDB_DEFAULT_DISABLE_CURSES 0)
endif()
endif()
set(LLDB_DISABLE_PYTHON ${LLDB_DEFAULT_DISABLE_PYTHON} CACHE BOOL
"Disables the Python scripting integration.")
set(LLDB_DISABLE_CURSES ${LLDB_DEFAULT_DISABLE_CURSES} CACHE BOOL
"Disables the Curses integration.")
set(LLDB_RELOCATABLE_PYTHON 0 CACHE BOOL
"Causes LLDB to use the PYTHONHOME environment variable to locate Python.")
if (NOT CMAKE_SYSTEM_NAME MATCHES "Windows")
set(LLDB_EXPORT_ALL_SYMBOLS 0 CACHE BOOL
"Causes lldb to export all symbols when building liblldb.")
else()
# Windows doesn't support toggling this, so don't bother making it a
# cache variable.
set(LLDB_EXPORT_ALL_SYMBOLS 0)
endif()
if ((NOT MSVC) OR MSVC12)
add_definitions( -DHAVE_ROUND )
endif()
if (LLDB_DISABLE_CURSES)
add_definitions( -DLLDB_DISABLE_CURSES )
endif()
# On Windows, we can't use the normal FindPythonLibs module that comes with CMake,
# for a number of reasons.
# 1) Prior to MSVC 2015, it is only possible to embed Python if python itself was
# compiled with an identical version (and build configuration) of MSVC as LLDB.
# The standard algorithm does not take into account the differences between
# a binary release distribution of python and a custom built distribution.
# 2) From MSVC 2015 and onwards, it is only possible to use Python 3.5 or later.
# 3) FindPythonLibs queries the registry to locate Python, and when looking for a
# 64-bit version of Python, since cmake.exe is a 32-bit executable, it will see
# a 32-bit view of the registry. As such, it is impossible for FindPythonLibs to
# locate 64-bit Python libraries.
# This function is designed to address those limitations. Currently it only partially
# addresses them, but it can be improved and extended on an as-needed basis.
function(find_python_libs_windows)
if ("${PYTHON_HOME}" STREQUAL "")
message("LLDB embedded Python on Windows requires specifying a value for PYTHON_HOME. Python support disabled.")
set(LLDB_DISABLE_PYTHON 1 PARENT_SCOPE)
return()
endif()
file(TO_CMAKE_PATH "${PYTHON_HOME}/Include" PYTHON_INCLUDE_DIRS)
if(EXISTS "${PYTHON_INCLUDE_DIRS}/patchlevel.h")
file(STRINGS "${PYTHON_INCLUDE_DIRS}/patchlevel.h" python_version_str
REGEX "^#define[ \t]+PY_VERSION[ \t]+\"[^\"]+\"")
string(REGEX REPLACE "^#define[ \t]+PY_VERSION[ \t]+\"([^\"+]+)[+]?\".*" "\\1"
PYTHONLIBS_VERSION_STRING "${python_version_str}")
message("-- Found Python version ${PYTHONLIBS_VERSION_STRING}")
string(REGEX REPLACE "([0-9]+)[.]([0-9]+)[.][0-9]+" "python\\1\\2" PYTHONLIBS_BASE_NAME "${PYTHONLIBS_VERSION_STRING}")
unset(python_version_str)
else()
message("Unable to find ${PYTHON_INCLUDE_DIRS}/patchlevel.h, Python installation is corrupt.")
message("Python support will be disabled for this build.")
set(LLDB_DISABLE_PYTHON 1 PARENT_SCOPE)
return()
endif()
file(TO_CMAKE_PATH "${PYTHON_HOME}" PYTHON_HOME)
file(TO_CMAKE_PATH "${PYTHON_HOME}/python_d.exe" PYTHON_DEBUG_EXE)
file(TO_CMAKE_PATH "${PYTHON_HOME}/libs/${PYTHONLIBS_BASE_NAME}_d.lib" PYTHON_DEBUG_LIB)
file(TO_CMAKE_PATH "${PYTHON_HOME}/${PYTHONLIBS_BASE_NAME}_d.dll" PYTHON_DEBUG_DLL)
file(TO_CMAKE_PATH "${PYTHON_HOME}/python.exe" PYTHON_RELEASE_EXE)
file(TO_CMAKE_PATH "${PYTHON_HOME}/libs/${PYTHONLIBS_BASE_NAME}.lib" PYTHON_RELEASE_LIB)
file(TO_CMAKE_PATH "${PYTHON_HOME}/${PYTHONLIBS_BASE_NAME}.dll" PYTHON_RELEASE_DLL)
if (NOT EXISTS ${PYTHON_DEBUG_EXE})
message("Unable to find ${PYTHON_DEBUG_EXE}")
unset(PYTHON_DEBUG_EXE)
endif()
if (NOT EXISTS ${PYTHON_RELEASE_EXE})
message("Unable to find ${PYTHON_RELEASE_EXE}")
unset(PYTHON_RELEASE_EXE)
endif()
if (NOT EXISTS ${PYTHON_DEBUG_LIB})
message("Unable to find ${PYTHON_DEBUG_LIB}")
unset(PYTHON_DEBUG_LIB)
endif()
if (NOT EXISTS ${PYTHON_RELEASE_LIB})
message("Unable to find ${PYTHON_RELEASE_LIB}")
unset(PYTHON_RELEASE_LIB)
endif()
if (NOT EXISTS ${PYTHON_DEBUG_DLL})
message("Unable to find ${PYTHON_DEBUG_DLL}")
unset(PYTHON_DEBUG_DLL)
endif()
if (NOT EXISTS ${PYTHON_RELEASE_DLL})
message("Unable to find ${PYTHON_RELEASE_DLL}")
unset(PYTHON_RELEASE_DLL)
endif()
if (NOT (PYTHON_DEBUG_EXE AND PYTHON_RELEASE_EXE AND PYTHON_DEBUG_LIB AND PYTHON_RELEASE_LIB AND PYTHON_DEBUG_DLL AND PYTHON_RELEASE_DLL))
message("Python installation is corrupt. Python support will be disabled for this build.")
set(LLDB_DISABLE_PYTHON 1 PARENT_SCOPE)
return()
endif()
# Generator expressions are evaluated in the context of each build configuration generated
# by CMake. Here we use the $<CONFIG:Debug>:VALUE logical generator expression to ensure
# that the debug Python library, DLL, and executable are used in the Debug build configuration.
#
# Generator expressions can be difficult to grok at first so here's a breakdown of the one
# used for PYTHON_LIBRARY:
#
# 1. $<CONFIG:Debug> evaluates to 1 when the Debug configuration is being generated,
# or 0 in all other cases.
# 2. $<$<CONFIG:Debug>:${PYTHON_DEBUG_LIB}> expands to ${PYTHON_DEBUG_LIB} when the Debug
# configuration is being generated, or nothing (literally) in all other cases.
# 3. $<$<NOT:$<CONFIG:Debug>>:${PYTHON_RELEASE_LIB}> expands to ${PYTHON_RELEASE_LIB} when
# any configuration other than Debug is being generated, or nothing in all other cases.
# 4. The conditionals in 2 & 3 are mutually exclusive.
# 5. A logical expression with a conditional that evaluates to 0 yields no value at all.
#
# Due to 4 & 5 it's possible to concatenate 2 & 3 to obtain a single value specific to each
# build configuration. In this example the value will be ${PYTHON_DEBUG_LIB} when generating the
# Debug configuration, or ${PYTHON_RELEASE_LIB} when generating any other configuration.
# Note that it's imperative that there is no whitespace between the two expressions, otherwise
# CMake will insert a semicolon between the two.
set (PYTHON_EXECUTABLE $<$<CONFIG:Debug>:${PYTHON_DEBUG_EXE}>$<$<NOT:$<CONFIG:Debug>>:${PYTHON_RELEASE_EXE}>)
set (PYTHON_LIBRARY $<$<CONFIG:Debug>:${PYTHON_DEBUG_LIB}>$<$<NOT:$<CONFIG:Debug>>:${PYTHON_RELEASE_LIB}>)
set (PYTHON_DLL $<$<CONFIG:Debug>:${PYTHON_DEBUG_DLL}>$<$<NOT:$<CONFIG:Debug>>:${PYTHON_RELEASE_DLL}>)
set (PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE} PARENT_SCOPE)
set (PYTHON_LIBRARY ${PYTHON_LIBRARY} PARENT_SCOPE)
set (PYTHON_DLL ${PYTHON_DLL} PARENT_SCOPE)
set (PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS} PARENT_SCOPE)
message("-- LLDB Found PythonExecutable: ${PYTHON_RELEASE_EXE} and ${PYTHON_DEBUG_EXE}")
message("-- LLDB Found PythonLibs: ${PYTHON_RELEASE_LIB} and ${PYTHON_DEBUG_LIB}")
message("-- LLDB Found PythonDLL: ${PYTHON_RELEASE_DLL} and ${PYTHON_DEBUG_DLL}")
message("-- LLDB Found PythonIncludeDirs: ${PYTHON_INCLUDE_DIRS}")
endfunction(find_python_libs_windows)
if (NOT LLDB_DISABLE_PYTHON)
if(UNIX)
# This is necessary for crosscompile on Ubuntu 14.04 64bit. Need a proper fix.
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(CMAKE_LIBRARY_ARCHITECTURE "x86_64-linux-gnu")
endif()
endif()
if ("${CMAKE_SYSTEM_NAME}" STREQUAL "Windows")
find_python_libs_windows()
if (NOT LLDB_RELOCATABLE_PYTHON)
file(TO_CMAKE_PATH "${PYTHON_HOME}" LLDB_PYTHON_HOME)
add_definitions( -DLLDB_PYTHON_HOME="${LLDB_PYTHON_HOME}" )
endif()
else()
find_package(PythonLibs REQUIRED)
endif()
if (PYTHON_INCLUDE_DIRS)
include_directories(${PYTHON_INCLUDE_DIRS})
endif()
endif()
if (LLDB_DISABLE_PYTHON)
unset(PYTHON_INCLUDE_DIRS)
unset(PYTHON_LIBRARY)
add_definitions( -DLLDB_DISABLE_PYTHON )
endif()
if (LLVM_EXTERNAL_CLANG_SOURCE_DIR)
include_directories(${LLVM_EXTERNAL_CLANG_SOURCE_DIR}/include)
else ()
include_directories(${CMAKE_SOURCE_DIR}/tools/clang/include)
endif ()
include_directories("${CMAKE_CURRENT_BINARY_DIR}/../clang/include")
# Disable GCC warnings
check_cxx_compiler_flag("-Wno-deprecated-declarations"
CXX_SUPPORTS_NO_DEPRECATED_DECLARATIONS)
if (CXX_SUPPORTS_NO_DEPRECATED_DECLARATIONS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-declarations")
endif ()
check_cxx_compiler_flag("-Wno-unknown-pragmas"
CXX_SUPPORTS_NO_UNKNOWN_PRAGMAS)
if (CXX_SUPPORTS_NO_UNKNOWN_PRAGMAS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-pragmas")
endif ()
check_cxx_compiler_flag("-Wno-strict-aliasing"
CXX_SUPPORTS_NO_STRICT_ALIASING)
if (CXX_SUPPORTS_NO_STRICT_ALIASING)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-strict-aliasing")
endif ()
# Disable Clang warnings
check_cxx_compiler_flag("-Wno-deprecated-register"
CXX_SUPPORTS_NO_DEPRECATED_REGISTER)
if (CXX_SUPPORTS_NO_DEPRECATED_REGISTER)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-register")
endif ()
check_cxx_compiler_flag("-Wno-vla-extension"
CXX_SUPPORTS_NO_VLA_EXTENSION)
if (CXX_SUPPORTS_NO_VLA_EXTENSION)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-vla-extension")
endif ()
# Disable MSVC warnings
if( MSVC )
add_definitions(
-wd4018 # Suppress 'warning C4018: '>=' : signed/unsigned mismatch'
-wd4068 # Suppress 'warning C4068: unknown pragma'
-wd4150 # Suppress 'warning C4150: deletion of pointer to incomplete type'
-wd4251 # Suppress 'warning C4251: T must have dll-interface to be used by clients of class U.'
-wd4521 # Suppress 'warning C4521: 'type' : multiple copy constructors specified'
-wd4530 # Suppress 'warning C4530: C++ exception handler used, but unwind semantics are not enabled.'
)
endif()
# Use the Unicode (UTF-16) APIs by default on Win32
if (CMAKE_SYSTEM_NAME MATCHES "Windows")
add_definitions( /D _UNICODE /D UNICODE )
endif()
set(LLDB_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
set(LLDB_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
# If building on a 32-bit system, make sure off_t can store offsets > 2GB
if( CMAKE_SIZEOF_VOID_P EQUAL 4 )
add_definitions( -D_LARGEFILE_SOURCE )
add_definitions( -D_FILE_OFFSET_BITS=64 )
endif()
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite "
"the makefiles distributed with LLDB. Please create a directory and run cmake "
"from there, passing the path to this source directory as the last argument. "
"This process created the file `CMakeCache.txt' and the directory "
"`CMakeFiles'. Please delete them.")
endif()
# Compute the LLDB version from the LLVM version.
string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" LLDB_VERSION
${PACKAGE_VERSION})
message(STATUS "LLDB version: ${LLDB_VERSION}")
if (CMAKE_VERSION VERSION_LESS 2.8.12)
set(cmake_2_8_12_INTERFACE)
set(cmake_2_8_12_PRIVATE)
set(cmake_2_8_12_PUBLIC)
else ()
set(cmake_2_8_12_INTERFACE INTERFACE)
set(cmake_2_8_12_PRIVATE PRIVATE)
set(cmake_2_8_12_PUBLIC PUBLIC)
endif ()
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}/include
${CMAKE_CURRENT_SOURCE_DIR}/include
)
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
install(DIRECTORY include/
DESTINATION include
FILES_MATCHING
PATTERN "*.h"
PATTERN ".svn" EXCLUDE
)
endif()
if (NOT LIBXML2_FOUND AND NOT (CMAKE_SYSTEM_NAME MATCHES "Windows"))
# Skip Libxml2 on Windows. In CMake 3.4 and higher, the algorithm for
# finding libxml2 got "smarter", and it can now locate the version which is
# in gnuwin32, even though that version does not contain the headers that
# LLDB uses.
find_package(LibXml2)
endif()
# Find libraries or frameworks that may be needed
if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
find_library(CARBON_LIBRARY Carbon)
find_library(FOUNDATION_LIBRARY Foundation)
find_library(CORE_FOUNDATION_LIBRARY CoreFoundation)
find_library(CORE_SERVICES_LIBRARY CoreServices)
find_library(SECURITY_LIBRARY Security)
find_library(DEBUG_SYMBOLS_LIBRARY DebugSymbols PATHS "/System/Library/PrivateFrameworks")
add_definitions( -DLIBXML2_DEFINED )
list(APPEND system_libs xml2 ${CURSES_LIBRARIES})
list(APPEND system_libs ${CARBON_LIBRARY} ${FOUNDATION_LIBRARY}
${CORE_FOUNDATION_LIBRARY} ${CORE_SERVICES_LIBRARY} ${SECURITY_LIBRARY}
${DEBUG_SYMBOLS_LIBRARY})
else()
if (LIBXML2_FOUND)
add_definitions( -DLIBXML2_DEFINED )
list(APPEND system_libs ${LIBXML2_LIBRARIES})
include_directories(${LIBXML2_INCLUDE_DIR})
endif()
endif()
if (HAVE_LIBPTHREAD)
list(APPEND system_libs pthread)
endif(HAVE_LIBPTHREAD)
if (HAVE_LIBDL)
list(APPEND system_libs ${CMAKE_DL_LIBS})
endif()
if (CMAKE_SYSTEM_NAME MATCHES "Linux")
# Check for syscall used by lldb-server on linux.
# If these are not found, it will fall back to ptrace (slow) for memory reads.
check_cxx_source_compiles("
#include <sys/uio.h>
int main() { process_vm_readv(0, nullptr, 0, nullptr, 0, 0); return 0; }"
HAVE_PROCESS_VM_READV)
if (HAVE_PROCESS_VM_READV)
add_definitions(-DHAVE_PROCESS_VM_READV)
else()
# If we don't have the syscall wrapper function, but we know the syscall number, we can
# still issue the syscall manually
check_cxx_source_compiles("
#include <sys/syscall.h>
int main() { return __NR_process_vm_readv; }"
HAVE_NR_PROCESS_VM_READV)
if (HAVE_NR_PROCESS_VM_READV)
add_definitions(-DHAVE_NR_PROCESS_VM_READV)
endif()
endif()
endif()
# Figure out if lldb could use lldb-server. If so, then we'll
# ensure we build lldb-server when an lldb target is being built.
if ((CMAKE_SYSTEM_NAME MATCHES "Darwin") OR
(CMAKE_SYSTEM_NAME MATCHES "FreeBSD") OR
(CMAKE_SYSTEM_NAME MATCHES "Linux") OR
(CMAKE_SYSTEM_NAME MATCHES "NetBSD"))
set(LLDB_CAN_USE_LLDB_SERVER 1)
else()
set(LLDB_CAN_USE_LLDB_SERVER 0)
endif()
# Figure out if lldb could use debugserver. If so, then we'll
# ensure we build debugserver when we build lldb.
if ( CMAKE_SYSTEM_NAME MATCHES "Darwin" )
set(LLDB_CAN_USE_DEBUGSERVER 1)
else()
set(LLDB_CAN_USE_DEBUGSERVER 0)
endif()
if (NOT LLDB_DISABLE_CURSES)
find_package(Curses REQUIRED)
find_library(CURSES_PANEL_LIBRARY NAMES panel DOC "The curses panel library")
if (NOT CURSES_PANEL_LIBRARY)
message(FATAL_ERROR "A required curses' panel library not found.")
endif ()
# Add panels to the library path
set (CURSES_LIBRARIES ${CURSES_LIBRARIES} ${CURSES_PANEL_LIBRARY})
list(APPEND system_libs ${CURSES_LIBRARIES})
include_directories(${CURSES_INCLUDE_DIR})
endif ()
check_cxx_symbol_exists("__GLIBCXX__" "string" LLDB_USING_LIBSTDCXX)
if(LLDB_USING_LIBSTDCXX)
# There doesn't seem to be an easy way to check the library version. Instead, we rely on the
# fact that std::set did not have the allocator constructor available until version 4.9
check_cxx_source_compiles("
#include <set>
std::set<int> s = std::set<int>(std::allocator<int>());
int main() { return 0; }"
LLDB_USING_LIBSTDCXX_4_9)
if (NOT LLDB_USING_LIBSTDCXX_4_9 AND NOT LLVM_ENABLE_EH)
message(WARNING
"You appear to be linking to libstdc++ version lesser than 4.9 without exceptions "
"enabled. These versions of the library have an issue, which causes occasional "
"lldb crashes. See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59656> for "
"details. Possible courses of action are:\n"
"- use libstdc++ version 4.9 or newer\n"
"- use libc++ (via LLVM_ENABLE_LIBCXX)\n"
"- enable exceptions (via LLVM_ENABLE_EH)\n"
"- ignore this warning and accept occasional instability")
endif()
endif()
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