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FindLibArchive: Support libarchive 3.2 version string format

This commit is contained in:
Orion Poplawski 2016-06-03 09:37:03 -06:00 committed by Brad King
parent 9d81f1b3aa
commit 38d18bab54
1 changed files with 5 additions and 4 deletions
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9
Modules/FindLibArchive.cmake
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@ -42,14 +42,15 @@ mark_as_advanced(LibArchive_INCLUDE_DIR LibArchive_LIBRARY)
# Extract the version number from the header.
if(LibArchive_INCLUDE_DIR AND EXISTS "${LibArchive_INCLUDE_DIR}/archive.h")
# The version string appears in one of two known formats in the header:
# The version string appears in one of three known formats in the header:
# #define ARCHIVE_LIBRARY_VERSION "libarchive 2.4.12"
# #define ARCHIVE_VERSION_STRING "libarchive 2.8.4"
# Match either format.
set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"libarchive +([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
# #define ARCHIVE_VERSION_ONLY_STRING "3.2.0"
# Match any format.
set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"(libarchive +)?([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
file(STRINGS "${LibArchive_INCLUDE_DIR}/archive.h" _LibArchive_VERSION_STRING LIMIT_COUNT 1 REGEX "${_LibArchive_VERSION_REGEX}")
if(_LibArchive_VERSION_STRING)
string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\1.\\2.\\3" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\2.\\3.\\4" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
endif()
unset(_LibArchive_VERSION_REGEX)
unset(_LibArchive_VERSION_STRING)