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# - Try to find libunwind
# Once done this will define
#
# Unwind_FOUND - system has libunwind
# unwind::unwind - cmake target for libunwind
include (FindPackageHandleStandardArgs)
find_path (Unwind_INCLUDE_DIR NAMES unwind.h libunwind.h DOC "unwind include directory")
find_library (Unwind_LIBRARY NAMES unwind DOC "unwind library")
if (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
set (Unwind_ARCH "arm")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
set (Unwind_ARCH "aarch64")
elseif (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR
CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64" OR
CMAKE_SYSTEM_PROCESSOR STREQUAL "corei7-64")
set (Unwind_ARCH "x86_64")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^i.86$")
set (Unwind_ARCH "x86")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc64")
set (Unwind_ARCH "ppc64")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc")
set (Unwind_ARCH "ppc32")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
set (Unwind_ARCH "mips")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^hppa")
set (Unwind_ARCH "hppa")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^ia64")
set (Unwind_ARCH "ia64")
endif (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
find_library (Unwind_PLATFORM_LIBRARY NAMES "unwind-${Unwind_ARCH}"
DOC "unwind library platform")
mark_as_advanced (Unwind_INCLUDE_DIR Unwind_LIBRARY Unwind_PLATFORM_LIBRARY)
# Extract version information
if (Unwind_LIBRARY)
set (_Unwind_VERSION_HEADER ${Unwind_INCLUDE_DIR}/libunwind-common.h)
if (EXISTS ${_Unwind_VERSION_HEADER})
FILE (READ ${_Unwind_VERSION_HEADER} _Unwind_VERSION_CONTENTS)
string (REGEX REPLACE ".*#define UNW_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1"
Unwind_VERSION_MAJOR "${_Unwind_VERSION_CONTENTS}")
string (REGEX REPLACE ".*#define UNW_VERSION_MINOR[ \t]+([0-9]+).*" "\\1"
Unwind_VERSION_MINOR "${_Unwind_VERSION_CONTENTS}")
string (REGEX REPLACE ".*#define UNW_VERSION_EXTRA[ \t]+([0-9]+).*" "\\1"
Unwind_VERSION_PATCH "${_Unwind_VERSION_CONTENTS}")
set (Unwind_VERSION
${Unwind_VERSION_MAJOR}.${Unwind_VERSION_MINOR}.${Unwind_VERSION_PATCH})
set (Unwind_VERSION_COMPONENTS 3)
endif (EXISTS ${_Unwind_VERSION_HEADER})
endif (Unwind_LIBRARY)
# handle the QUIETLY and REQUIRED arguments and set Unwind_FOUND to TRUE
# if all listed variables are TRUE
find_package_handle_standard_args (Unwind REQUIRED_VARS Unwind_INCLUDE_DIR
Unwind_LIBRARY Unwind_PLATFORM_LIBRARY VERSION_VAR Unwind_VERSION)
if (Unwind_FOUND)
if (NOT TARGET unwind::unwind)
add_library (unwind::unwind INTERFACE IMPORTED)
set_property (TARGET unwind::unwind PROPERTY
INTERFACE_INCLUDE_DIRECTORIES ${Unwind_INCLUDE_DIR}
)
set_property (TARGET unwind::unwind PROPERTY
INTERFACE_LINK_LIBRARIES ${Unwind_LIBRARY} ${Unwind_PLATFORM_LIBRARY}
)
set_property (TARGET unwind::unwind PROPERTY
IMPORTED_CONFIGURATIONS RELEASE
)
endif (NOT TARGET unwind::unwind)
endif (Unwind_FOUND)
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