#To make a solution file to navigate the harfbuzz source code from the Visual Studio GUI:
#xcopy /S c:\work\osd\harfbuzz\0.9.40\patch\*.* c:\work\harfbuzz-0.9.40
#cmake -G "Visual Studio 10" -DCMAKE_INSTALL_PREFIX=c:\work\local c:\work\harfbuzz-0.9.40

project (harfbuzz)
cmake_minimum_required (VERSION 2.8)

#Import the ragel tool to be used by ragel_gen()
#It must have been built from source in a previous step and exported to 
#tool/ragel.cmake by install(TARGETS ... EXPORT tool/ragel.cmake)

find_file (IMPORT_RAGEL "tool/ragel.cmake")
if (IMPORT_RAGEL)
  message (FATAL_ERROR "Could not find tool/ragel.cmake. Build the ragel tool first.")
else (IMPORT_RAGEL)
  include (${IMPORT_RAGEL})
endif (IMPORT_RAGEL)

#The ragel tool is now available for use with add_custom_command() as tool-ragel.

function(ragel_gen in_rl)
  add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${in_rl}.cpp
    COMMAND tool-ragel -G2 -o ${CMAKE_CURRENT_BINARY_DIR}/${in_rl}.cpp ${CMAKE_CURRENT_SOURCE_DIR}/${in_rl}.rl -I ${CMAKE_CURRENT_SOURCE_DIR}
    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${in_rl}.rl
  )
endfunction(ragel_gen)

#A ragel source file named file.rl can now be added to the project by ragel_gen(file)
#to ensure that a file ${CMAKE_CURRENT_BINARY_DIR}/file.cpp is generated.

add_subdirectory (src)