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35 # - Define macro to check if linking to libxml2 actually works,
36 # because the find_package macro is content if one exists. This can
37 # fail in cross-compilation environments, and we want to know about
38 # libxml2 so the test binaries are built only when they will work.
40 # GMX_TEST_LIBXML2(VARIABLE)
42 # VARIABLE will be set to true if libxml2 support is present
44 include(CheckLibraryExists)
45 include(CheckIncludeFiles)
46 include(gmxOptionUtilities)
47 function(GMX_TEST_LIBXML2 VARIABLE)
49 set(${VARIABLE} OFF PARENT_SCOPE)
54 set(LIBXML2_LIBRARIES "${LIBXML2_LIBRARIES};${ZLIB_LIBRARIES}" PARENT_SCOPE) #not needed for dynamic but does not hurt
57 string(TOUPPER "${CMAKE_BUILD_TYPE}" _cmake_build_type)
58 if(${_cmake_build_type} STREQUAL "MSAN")
59 # Linking MSan-enabled libxml2 and zlib in a way that can be
60 # tested with try_compile setup is tricky, but someone doing
61 # an MSan build can take care of themselves (for now, at
63 set(${VARIABLE} ON PARENT_SCOPE)
67 gmx_check_if_changed(_do_libxml2_recompile LIBXML2_INCLUDE_DIR LIBXML2_LIBRARIES)
68 if(_do_libxml2_recompile)
69 unset(LIBXML2_LINKS_OK CACHE)
71 check_library_exists("${LIBXML2_LIBRARIES}" "xmlTextWriterEndAttribute" "" LIBXML2_LINKS_OK)
73 #check that xml headers can be included
74 set(CMAKE_REQUIRED_INCLUDES "${LIBXML2_INCLUDE_DIR}")
75 check_include_files("libxml/parser.h" LIBXML2_INCL_OK)
76 if(NOT LIBXML2_INCL_OK)
77 #xml headers depend on iconv.h. Test whether adding its path fixes the problem
78 find_path(ICONV_INCLUDE_DIR iconv.h)
80 set(CMAKE_REQUIRED_INCLUDES "${LIBXML2_INCLUDE_DIR};${ICONV_INCLUDE_DIR}")
81 unset(LIBXML2_INCL_OK CACHE)
82 check_include_files("libxml/parser.h" LIBXML2_INCL_OK)
83 set(LIBXML2_INCLUDE_DIR "${LIBXML2_INCLUDE_DIR};${ICONV_INCLUDE_DIR}" CACHE PATH "Libxml2 include path" FORCE)
86 set(${VARIABLE} ${LIBXML2_INCL_OK} PARENT_SCOPE)
88 set(${VARIABLE} OFF PARENT_SCOPE)