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cmake: handle empty unwind version patch component

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This commit is contained in:
Sergiu Deitsch 2021-02-13 12:14:35 +01:00
parent 4fa737b62a
commit 3b21da69ea
1 changed files with 10 additions and 4 deletions
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12
cmake/FindUnwind.cmake
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@ -41,7 +41,7 @@ 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)
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}")
@ -50,9 +50,15 @@ if (Unwind_LIBRARY)
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 ${Unwind_VERSION_MAJOR}.${Unwind_VERSION_MINOR})
if (CMAKE_MATCH_1)
# Third version component may be empty
set (Unwind_VERSION ${Unwind_VERSION}.${Unwind_VERSION_PATCH})
set (Unwind_VERSION_COMPONENTS 3)
else (CMAKE_MATCH_1)
set (Unwind_VERSION_COMPONENTS 2)
endif (CMAKE_MATCH_1)
endif (EXISTS ${_Unwind_VERSION_HEADER})
endif (Unwind_LIBRARY)