Add basic support for cmake on linux

cmake/FindSndFile.cmake

@@ -0,0 +1,67 @@
+# Found on http://hg.kvats.net
+#
+# - Try to find libsndfile
+# 
+# Once done this will define
+#
+#  SNDFILE_FOUND - system has libsndfile
+#  SNDFILE_INCLUDE_DIRS - the libsndfile include directory
+#  SNDFILE_LIBRARIES - Link these to use libsndfile
+#
+#  Copyright (C) 2006  Wengo
+#
+#  Redistribution and use is allowed according to the terms of the New
+#  BSD license.
+#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+
+if (SNDFILE_LIBRARIES AND SNDFILE_INCLUDE_DIRS)
+  # in cache already
+  set(SNDFILE_FOUND TRUE)
+else (SNDFILE_LIBRARIES AND SNDFILE_INCLUDE_DIRS)
+
+  find_path(SNDFILE_INCLUDE_DIR
+    NAMES
+      sndfile.h
+    PATHS
+      /usr/include
+      /usr/local/include
+      /opt/local/include
+      /sw/include
+  )
+  
+  find_library(SNDFILE_LIBRARY
+    NAMES
+      sndfile
+    PATHS
+      /usr/lib
+      /usr/local/lib
+      /opt/local/lib
+      /sw/lib
+  )
+
+  set(SNDFILE_INCLUDE_DIRS
+    ${SNDFILE_INCLUDE_DIR}
+  )
+  set(SNDFILE_LIBRARIES
+    ${SNDFILE_LIBRARY}
+  )
+
+  if (SNDFILE_INCLUDE_DIRS AND SNDFILE_LIBRARIES)
+    set(SNDFILE_FOUND TRUE)
+  endif (SNDFILE_INCLUDE_DIRS AND SNDFILE_LIBRARIES)
+
+  if (SNDFILE_FOUND)
+    if (NOT SndFile_FIND_QUIETLY)
+      message(STATUS "Found libsndfile: ${SNDFILE_LIBRARIES}")
+    endif (NOT SndFile_FIND_QUIETLY)
+  else (SNDFILE_FOUND)
+    if (SndFile_FIND_REQUIRED)
+      message(FATAL_ERROR "Could not find libsndfile")
+    endif (SndFile_FIND_REQUIRED)
+  endif (SNDFILE_FOUND)
+
+  # show the SNDFILE_INCLUDE_DIRS and SNDFILE_LIBRARIES variables only in the advanced view
+  mark_as_advanced(SNDFILE_INCLUDE_DIRS SNDFILE_LIBRARIES)
+
+endif (SNDFILE_LIBRARIES AND SNDFILE_INCLUDE_DIRS)