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CMake/Modules/FindLibXml2.cmake
Peter Kokot 4e6a13f211 Use lower case style for commands
Where possible this syncs the CS for command names:

- check_c_source_compiles()
- check_cxx_compiler_flag()
- check_cxx_source_compiles()
- check_cxx_symbol_exists()
- check_include_file_cxx()
- check_include_file()
- check_include_files()
- check_library_exists()
- check_source_compiles()
- check_struct_has_member()
- check_symbol_exists()
- check_type_size()
- cmake_dependent_option()
- cmake_parse_arguments()
- feature_summary()
- file()
- find_package_handle_standard_args()
- if(), endif...
- install(FILES)
- list()
- message()
- pkg_check_modules()
- select_library_configurations()
- set_package_info()
- test_big_endian()
2025-01-28 13:51:46 -05:00

132 lines
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CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindLibXml2
-----------
Find the XML processing library (libxml2).
IMPORTED Targets
^^^^^^^^^^^^^^^^
.. versionadded:: 3.12
The following :prop_tgt:`IMPORTED` targets may be defined:
``LibXml2::LibXml2``
libxml2 library.
``LibXml2::xmllint``
.. versionadded:: 3.17
xmllint command-line executable.
Result variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project:
``LibXml2_FOUND``
true if libxml2 headers and libraries were found
``LIBXML2_INCLUDE_DIR``
the directory containing LibXml2 headers
``LIBXML2_INCLUDE_DIRS``
list of the include directories needed to use LibXml2
``LIBXML2_LIBRARIES``
LibXml2 libraries to be linked
``LIBXML2_DEFINITIONS``
the compiler switches required for using LibXml2
``LIBXML2_XMLLINT_EXECUTABLE``
path to the XML checking tool xmllint coming with LibXml2
``LIBXML2_VERSION_STRING``
the version of LibXml2 found (since CMake 2.8.8)
Cache variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``LIBXML2_INCLUDE_DIR``
the directory containing LibXml2 headers
``LIBXML2_LIBRARY``
path to the LibXml2 library
#]=======================================================================]
cmake_policy(PUSH)
cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
# use pkg-config to get the directories and then use these values
# in the find_path() and find_library() calls
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_check_modules(PC_LIBXML QUIET libxml-2.0)
endif()
find_path(LIBXML2_INCLUDE_DIR NAMES libxml/xpath.h
HINTS
${PC_LIBXML_INCLUDEDIR}
${PC_LIBXML_INCLUDE_DIRS}
PATH_SUFFIXES libxml2
)
# CMake 3.9 and below used 'LIBXML2_LIBRARIES' as the name of
# the cache entry storing the find_library result. Use the
# value if it was set by the project or user.
if(DEFINED LIBXML2_LIBRARIES AND NOT DEFINED LIBXML2_LIBRARY)
set(LIBXML2_LIBRARY ${LIBXML2_LIBRARIES})
endif()
find_library(LIBXML2_LIBRARY NAMES xml2 libxml2 libxml2_a
HINTS
${PC_LIBXML_LIBDIR}
${PC_LIBXML_LIBRARY_DIRS}
)
find_program(LIBXML2_XMLLINT_EXECUTABLE xmllint)
# for backwards compat. with KDE 4.0.x:
set(XMLLINT_EXECUTABLE "${LIBXML2_XMLLINT_EXECUTABLE}")
if(LIBXML2_INCLUDE_DIR AND EXISTS "${LIBXML2_INCLUDE_DIR}/libxml/xmlversion.h")
file(STRINGS "${LIBXML2_INCLUDE_DIR}/libxml/xmlversion.h" libxml2_version_str
REGEX "^#define[\t ]+LIBXML_DOTTED_VERSION[\t ]+\".*\"")
string(REGEX REPLACE "^#define[\t ]+LIBXML_DOTTED_VERSION[\t ]+\"([^\"]*)\".*" "\\1"
LIBXML2_VERSION_STRING "${libxml2_version_str}")
unset(libxml2_version_str)
endif()
set(LIBXML2_INCLUDE_DIRS ${LIBXML2_INCLUDE_DIR})
set(LIBXML2_LIBRARIES ${LIBXML2_LIBRARY})
# Did we find the same installation as pkg-config?
# If so, use additional information from it.
unset(LIBXML2_DEFINITIONS)
foreach(libxml2_pc_lib_dir IN LISTS PC_LIBXML_LIBDIR PC_LIBXML_LIBRARY_DIRS)
if (LIBXML2_LIBRARY MATCHES "^${libxml2_pc_lib_dir}")
list(APPEND LIBXML2_INCLUDE_DIRS ${PC_LIBXML_INCLUDE_DIRS})
set(LIBXML2_DEFINITIONS ${PC_LIBXML_CFLAGS_OTHER})
break()
endif()
endforeach()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(LibXml2
REQUIRED_VARS LIBXML2_LIBRARY LIBXML2_INCLUDE_DIR
VERSION_VAR LIBXML2_VERSION_STRING)
mark_as_advanced(LIBXML2_INCLUDE_DIR LIBXML2_LIBRARY LIBXML2_XMLLINT_EXECUTABLE)
if(LibXml2_FOUND AND NOT TARGET LibXml2::LibXml2)
add_library(LibXml2::LibXml2 UNKNOWN IMPORTED)
set_target_properties(LibXml2::LibXml2 PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${LIBXML2_INCLUDE_DIRS}")
set_target_properties(LibXml2::LibXml2 PROPERTIES INTERFACE_COMPILE_OPTIONS "${LIBXML2_DEFINITIONS}")
set_property(TARGET LibXml2::LibXml2 APPEND PROPERTY IMPORTED_LOCATION "${LIBXML2_LIBRARY}")
endif()
if(LIBXML2_XMLLINT_EXECUTABLE AND NOT TARGET LibXml2::xmllint)
add_executable(LibXml2::xmllint IMPORTED)
set_target_properties(LibXml2::xmllint PROPERTIES IMPORTED_LOCATION "${LIBXML2_XMLLINT_EXECUTABLE}")
endif()
cmake_policy(POP)