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function (READ_VERSION_HEADER var_prefix def_regex file_path)
file(STRINGS "${file_path}" lines)
foreach (line ${lines})
if (line MATCHES "^#define[ \t]+(${def_regex})[ \t]+([0-9]+)$")
set("${var_prefix}${CMAKE_MATCH_1}"
"${CMAKE_MATCH_2}"
PARENT_SCOPE
)
endif ()
endforeach ()
endfunction ()
macro (SET_PROJECT_VERSION major minor micro)
set(PROJECT_VERSION_MAJOR "${major}")
set(PROJECT_VERSION_MINOR "${minor}")
set(PROJECT_VERSION_MICRO "${micro}")
set(PROJECT_VERSION "${major}.${minor}.${micro}")
endmacro ()
# Libtool library version, not to be confused with API version.
# See http://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
macro (CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE library_name current revision age)
math(EXPR ${library_name}_VERSION_MAJOR "${current} - ${age}")
set(${library_name}_VERSION_MINOR ${age})
set(${library_name}_VERSION_MICRO ${revision})
set(${library_name}_VERSION ${${library_name}_VERSION_MAJOR}.${age}.${revision})
endmacro ()
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