freetype2/builds/cmake/FindHarfBuzz.cmake

# Copyright (c) 2012, Intel Corporation
#
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#
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# Try to find HarfBuzz include and library directories.
#
# After successful discovery, this will set for inclusion where needed:
#
#   HARFBUZZ_INCLUDE_DIRS - containg the HarfBuzz headers
#   HARFBUZZ_LIBRARIES    - containg the HarfBuzz library

include(FindPkgConfig)
pkg_check_modules(PC_HARFBUZZ QUIET harfbuzz)

find_path(HARFBUZZ_INCLUDE_DIRS
  NAMES hb.h
  HINTS ${PC_HARFBUZZ_INCLUDEDIR}
        ${PC_HARFBUZZ_INCLUDE_DIRS}
  PATH_SUFFIXES harfbuzz)

find_library(HARFBUZZ_LIBRARIES
  NAMES harfbuzz
  HINTS ${PC_HARFBUZZ_LIBDIR}
        ${PC_HARFBUZZ_LIBRARY_DIRS})

if (HARFBUZZ_INCLUDE_DIRS)
  if (EXISTS "${HARFBUZZ_INCLUDE_DIRS}/hb-version.h")
    file(READ "${HARFBUZZ_INCLUDE_DIRS}/hb-version.h" _harfbuzz_version_content)

    string(REGEX MATCH
           "#define +HB_VERSION_STRING +\"([0-9]+\\.[0-9]+\\.[0-9]+)\""
           _dummy "${_harfbuzz_version_content}")
    set(HARFBUZZ_VERSION "${CMAKE_MATCH_1}")
  endif ()
endif ()

if ("${harfbuzz_FIND_VERSION}" VERSION_GREATER "${HARFBUZZ_VERSION}")
  message(FATAL_ERROR
    "Required version (" ${harfbuzz_FIND_VERSION} ")"
    " is higher than found version (" ${HARFBUZZ_VERSION} ")")
endif ()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
  harfbuzz
  REQUIRED_VARS HARFBUZZ_INCLUDE_DIRS HARFBUZZ_LIBRARIES
  VERSION_VAR HARFBUZZ_VERSION)

mark_as_advanced(
  HARFBUZZ_INCLUDE_DIRS
  HARFBUZZ_LIBRARIES)

# Allow easy linking as in
#
#   target_link_libraries(freetype PRIVATE Harfbuzz::Harfbuzz)
#
if (NOT CMAKE_VERSION VERSION_LESS 3.1)
  if (HARFBUZZ_FOUND AND NOT TARGET Harfbuzz::Harfbuzz)
    add_library(Harfbuzz::Harfbuzz INTERFACE IMPORTED)
    set_target_properties(
        Harfbuzz::Harfbuzz PROPERTIES
          INTERFACE_INCLUDE_DIRECTORIES "${HARFBUZZ_INCLUDE_DIRS}")
  endif ()
endif ()