| James Kuszmaul | ba0ac1a | 2022-08-12 16:29:30 -0700 | [diff] [blame^] | 1 | # - Try to find libunwind |
| 2 | # Once done this will define |
| 3 | # |
| 4 | # Unwind_FOUND - system has libunwind |
| 5 | # unwind::unwind - cmake target for libunwind |
| 6 | |
| 7 | include (FindPackageHandleStandardArgs) |
| 8 | |
| 9 | find_path (Unwind_INCLUDE_DIR NAMES unwind.h libunwind.h DOC "unwind include directory") |
| 10 | find_library (Unwind_LIBRARY NAMES unwind DOC "unwind library") |
| 11 | |
| 12 | mark_as_advanced (Unwind_INCLUDE_DIR Unwind_LIBRARY) |
| 13 | |
| 14 | # Extract version information |
| 15 | if (Unwind_LIBRARY) |
| 16 | set (_Unwind_VERSION_HEADER ${Unwind_INCLUDE_DIR}/libunwind-common.h) |
| 17 | |
| 18 | if (EXISTS ${_Unwind_VERSION_HEADER}) |
| 19 | file (READ ${_Unwind_VERSION_HEADER} _Unwind_VERSION_CONTENTS) |
| 20 | |
| 21 | string (REGEX REPLACE ".*#define UNW_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" |
| 22 | Unwind_VERSION_MAJOR "${_Unwind_VERSION_CONTENTS}") |
| 23 | string (REGEX REPLACE ".*#define UNW_VERSION_MINOR[ \t]+([0-9]+).*" "\\1" |
| 24 | Unwind_VERSION_MINOR "${_Unwind_VERSION_CONTENTS}") |
| 25 | string (REGEX REPLACE ".*#define UNW_VERSION_EXTRA[ \t]+([0-9]+).*" "\\1" |
| 26 | Unwind_VERSION_PATCH "${_Unwind_VERSION_CONTENTS}") |
| 27 | |
| 28 | set (Unwind_VERSION ${Unwind_VERSION_MAJOR}.${Unwind_VERSION_MINOR}) |
| 29 | |
| 30 | if (CMAKE_MATCH_0) |
| 31 | # Third version component may be empty |
| 32 | set (Unwind_VERSION ${Unwind_VERSION}.${Unwind_VERSION_PATCH}) |
| 33 | set (Unwind_VERSION_COMPONENTS 3) |
| 34 | else (CMAKE_MATCH_0) |
| 35 | set (Unwind_VERSION_COMPONENTS 2) |
| 36 | endif (CMAKE_MATCH_0) |
| 37 | endif (EXISTS ${_Unwind_VERSION_HEADER}) |
| 38 | endif (Unwind_LIBRARY) |
| 39 | |
| 40 | # handle the QUIETLY and REQUIRED arguments and set Unwind_FOUND to TRUE |
| 41 | # if all listed variables are TRUE |
| 42 | find_package_handle_standard_args (Unwind |
| 43 | REQUIRED_VARS Unwind_INCLUDE_DIR Unwind_LIBRARY |
| 44 | VERSION_VAR Unwind_VERSION |
| 45 | ) |
| 46 | |
| 47 | if (Unwind_FOUND) |
| 48 | if (NOT TARGET unwind::unwind) |
| 49 | add_library (unwind::unwind INTERFACE IMPORTED) |
| 50 | |
| 51 | set_property (TARGET unwind::unwind PROPERTY |
| 52 | INTERFACE_INCLUDE_DIRECTORIES ${Unwind_INCLUDE_DIR} |
| 53 | ) |
| 54 | set_property (TARGET unwind::unwind PROPERTY |
| 55 | INTERFACE_LINK_LIBRARIES ${Unwind_LIBRARY} |
| 56 | ) |
| 57 | set_property (TARGET unwind::unwind PROPERTY |
| 58 | IMPORTED_CONFIGURATIONS RELEASE |
| 59 | ) |
| 60 | endif (NOT TARGET unwind::unwind) |
| 61 | endif (Unwind_FOUND) |