add improved FindHarfBuzz.cmake from the webkit repo

    src/signaltk/plot/series.cc

    src/signaltk/plot/timedomain.cc

    src/signaltk/plot/plot_api.cc

    src/signaltk/text/text_shaper.cc

    src/signaltk/util/random.cc

    src/signaltk/util/bufferutil.cc

    src/signaltk/util/exception.cc

    src/signaltk_cli.cc

    src/signaltk_cmd.cc)

set(SIGNALTK_LDFLAGS signaltk ${CAIRO_LIBRARIES} ${FREETYPE_LIBRARIES} ${HARFBUZZ_LIBRARIES} harfbuzz-icu)

set(SIGNALTK_LDFLAGS signaltk ${CAIRO_LIBRARIES} ${FREETYPE_LIBRARIES} ${HARFBUZZ_LIBRARIES} ${HARFBUZZ_ICU_LIBRARIES})

file(GLOB test_files "test/**/test_*.cc")

foreach(test_path ${test_files})

# Copyright (c) 2012, Intel Corporation

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

#

# * Redistributions of source code must retain the above copyright notice, this

#   list of conditions and the following disclaimer.

# * Redistributions in binary form must reproduce the above copyright notice,

#   this list of conditions and the following disclaimer in the documentation

#   and/or other materials provided with the distribution.

# * Neither the name of Intel Corporation nor the names of its contributors may

#   be used to endorse or promote products derived from this software without

#   specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# 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 harfbuzz>=0.9.0)

FIND_PATH(HARFBUZZ_INCLUDE_DIRS NAMES hb.h

  HINTS ${PC_HARFBUZZ_INCLUDE_DIRS} ${PC_HARFBUZZ_INCLUDEDIR}

)

FIND_LIBRARY(HARFBUZZ_LIBRARIES NAMES harfbuzz

  HINTS ${PC_HARFBUZZ_LIBRARY_DIRS} ${PC_HARFBUZZ_LIBDIR}

)

INCLUDE(FindPackageHandleStandardArgs)

FIND_PACKAGE_HANDLE_STANDARD_ARGS(HarfBuzz DEFAULT_MSG HARFBUZZ_INCLUDE_DIRS HARFBUZZ_LIBRARIES)