/usr/share/cmake-2.8/Modules/FindLibXslt.cmake is in cmake-data 2.8.12.2-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | # - Try to find the LibXslt library
# Once done this will define
#
#  LIBXSLT_FOUND - system has LibXslt
#  LIBXSLT_INCLUDE_DIR - the LibXslt include directory
#  LIBXSLT_LIBRARIES - Link these to LibXslt
#  LIBXSLT_DEFINITIONS - Compiler switches required for using LibXslt
#  LIBXSLT_VERSION_STRING - version of LibXslt found (since CMake 2.8.8)
# Additionally, the following two variables are set (but not required for using xslt):
#  LIBXSLT_EXSLT_LIBRARIES - Link to these if you need to link against the exslt library
#  LIBXSLT_XSLTPROC_EXECUTABLE - Contains the full path to the xsltproc executable if found
#=============================================================================
# Copyright 2006-2009 Kitware, Inc.
# Copyright 2006 Alexander Neundorf <neundorf@kde.org>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
#  License text for the above reference.)
# use pkg-config to get the directories and then use these values
# in the find_path() and find_library() calls
find_package(PkgConfig QUIET)
PKG_CHECK_MODULES(PC_LIBXSLT QUIET libxslt)
set(LIBXSLT_DEFINITIONS ${PC_LIBXSLT_CFLAGS_OTHER})
find_path(LIBXSLT_INCLUDE_DIR NAMES libxslt/xslt.h
    HINTS
   ${PC_LIBXSLT_INCLUDEDIR}
   ${PC_LIBXSLT_INCLUDE_DIRS}
  )
find_library(LIBXSLT_LIBRARIES NAMES xslt libxslt
    HINTS
   ${PC_LIBXSLT_LIBDIR}
   ${PC_LIBXSLT_LIBRARY_DIRS}
  )
find_library(LIBXSLT_EXSLT_LIBRARY NAMES exslt libexslt
    HINTS
    ${PC_LIBXSLT_LIBDIR}
    ${PC_LIBXSLT_LIBRARY_DIRS}
  )
set(LIBXSLT_EXSLT_LIBRARIES ${LIBXSLT_EXSLT_LIBRARY} )
find_program(LIBXSLT_XSLTPROC_EXECUTABLE xsltproc)
if(PC_LIBXSLT_VERSION)
    set(LIBXSLT_VERSION_STRING ${PC_LIBXSLT_VERSION})
elseif(LIBXSLT_INCLUDE_DIR AND EXISTS "${LIBXSLT_INCLUDE_DIR}/libxslt/xsltconfig.h")
    file(STRINGS "${LIBXSLT_INCLUDE_DIR}/libxslt/xsltconfig.h" libxslt_version_str
         REGEX "^#define[\t ]+LIBXSLT_DOTTED_VERSION[\t ]+\".*\"")
    string(REGEX REPLACE "^#define[\t ]+LIBXSLT_DOTTED_VERSION[\t ]+\"([^\"]*)\".*" "\\1"
           LIBXSLT_VERSION_STRING "${libxslt_version_str}")
    unset(libxslt_version_str)
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibXslt
                                  REQUIRED_VARS LIBXSLT_LIBRARIES LIBXSLT_INCLUDE_DIR
                                  VERSION_VAR LIBXSLT_VERSION_STRING)
mark_as_advanced(LIBXSLT_INCLUDE_DIR
                 LIBXSLT_LIBRARIES
                 LIBXSLT_EXSLT_LIBRARY
                 LIBXSLT_XSLTPROC_EXECUTABLE)
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