# Works the same as find_package, but forwards the “REQUIRED” and “QUIET” arguments # used for the current package. For this to work, the first parameter must be the # prefix of the current package, then the prefix of the new package etc, which are # passed to find_package. macro (libfind_package PREFIX)

set (LIBFIND_PACKAGE_ARGS ${ARGN})
if (${PREFIX}_FIND_QUIETLY)
  set (LIBFIND_PACKAGE_ARGS ${LIBFIND_PACKAGE_ARGS} QUIET)
endif (${PREFIX}_FIND_QUIETLY)
if (${PREFIX}_FIND_REQUIRED)
  set (LIBFIND_PACKAGE_ARGS ${LIBFIND_PACKAGE_ARGS} REQUIRED)
endif (${PREFIX}_FIND_REQUIRED)
find_package(${LIBFIND_PACKAGE_ARGS})

endmacro (libfind_package)

# Damn CMake developers made the UsePkgConfig system deprecated in the same release (2.6) # where they added pkg_check_modules. Consequently I need to support both in my scripts # to avoid those deprecated warnings. Here's a helper that does just that. # Works identically to pkg_check_modules, except that no checks are needed prior to use. macro (libfind_pkg_check_modules PREFIX PKGNAME)

if (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
  include(UsePkgConfig)
  pkgconfig(${PKGNAME} ${PREFIX}_INCLUDE_DIRS ${PREFIX}_LIBRARY_DIRS ${PREFIX}_LDFLAGS ${PREFIX}_CFLAGS)
else (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
  find_package(PkgConfig)
  if (PKG_CONFIG_FOUND)
    pkg_check_modules(${PREFIX} ${PKGNAME})
  endif (PKG_CONFIG_FOUND)
endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)

endmacro (libfind_pkg_check_modules)

# Do the final processing once the paths have been detected. # If include dirs are needed, ${PREFIX}_PROCESS_INCLUDES should be set to contain # all the variables, each of which contain one include directory. # Ditto for ${PREFIX}_PROCESS_LIBS and library files. # Will set ${PREFIX}_FOUND, ${PREFIX}_INCLUDE_DIRS and ${PREFIX}_LIBRARIES. # Also handles errors in case library detection was required, etc. macro (libfind_process PREFIX)

# Skip processing if already processed during this run
if (NOT ${PREFIX}_FOUND)
  # Start with the assumption that the library was found
  set (${PREFIX}_FOUND TRUE)

  # Process all includes and set _FOUND to false if any are missing
  foreach (i ${${PREFIX}_PROCESS_INCLUDES})
    if (${i})
      set (${PREFIX}_INCLUDE_DIRS ${${PREFIX}_INCLUDE_DIRS} ${${i}})
      mark_as_advanced(${i})
    else (${i})
      set (${PREFIX}_FOUND FALSE)
    endif (${i})
  endforeach (i)

  # Process all libraries and set _FOUND to false if any are missing
  foreach (i ${${PREFIX}_PROCESS_LIBS})
    if (${i})
      set (${PREFIX}_LIBRARIES ${${PREFIX}_LIBRARIES} ${${i}})
      mark_as_advanced(${i})
    else (${i})
      set (${PREFIX}_FOUND FALSE)
    endif (${i})
  endforeach (i)

  # Print message and/or exit on fatal error
  if (${PREFIX}_FOUND)
    if (NOT ${PREFIX}_FIND_QUIETLY)
      message (STATUS "Found ${PREFIX} ${${PREFIX}_VERSION}")
    endif (NOT ${PREFIX}_FIND_QUIETLY)
  else (${PREFIX}_FOUND)
    if (${PREFIX}_FIND_REQUIRED)
      foreach (i ${${PREFIX}_PROCESS_INCLUDES} ${${PREFIX}_PROCESS_LIBS})
        message("${i}=${${i}}")
      endforeach (i)
      message (FATAL_ERROR "Required library ${PREFIX} NOT FOUND.\nInstall the library (dev version) and try again. If the library is already installed, use the ${PREFIX}_ROOT_DIR environment variable or ccmake to set the missing variables manually.")
    else (${PREFIX}_FIND_REQUIRED)  # NOTE: else case not included in original file
      message (STATUS "Optional library ${PREFIX} NOT FOUND. If the library is already installed, use the ${PREFIX}_ROOT_DIR environment variable or ccmake to set the missing variables manually.")
    endif (${PREFIX}_FIND_REQUIRED)
  endif (${PREFIX}_FOUND)
endif (NOT ${PREFIX}_FOUND)

endmacro (libfind_process)

macro(libfind_library PREFIX basename)

set(TMP "")
if(MSVC80)
  set(TMP -vc80)
endif(MSVC80)
if(MSVC90)
  set(TMP -vc90)
endif(MSVC90)
set(${PREFIX}_LIBNAMES ${basename}${TMP})
if(${ARGC} GREATER 2)
  set(${PREFIX}_LIBNAMES ${basename}${TMP}-${ARGV2})
  string(REGEX REPLACE "\\." "_" TMP ${${PREFIX}_LIBNAMES})
  set(${PREFIX}_LIBNAMES ${${PREFIX}_LIBNAMES} ${TMP})
endif(${ARGC} GREATER 2)
find_library(${PREFIX}_LIBRARY
  NAMES ${${PREFIX}_LIBNAMES}
  PATHS ${${PREFIX}_PKGCONF_LIBRARY_DIRS}
)

endmacro(libfind_library)