Port cmake improvements to miami

cmake/FindSndFile.cmake

@@ -4,9 +4,11 @@
 # 
 # Once done this will define
 #
-#  SNDFILE_FOUND - system has libsndfile
+#  SNDFILE_FOUND        - system has libsndfile
 #  SNDFILE_INCLUDE_DIRS - the libsndfile include directory
-#  SNDFILE_LIBRARIES - Link these to use libsndfile
+#  SNDFILE_LIBRARIES    - Link these to use libsndfile
+#  SNDFILE_CFLAGS       - Compile options to use libsndfile
+#  SndFile::SndFile     - Imported library of libsndfile
 #
 #  Copyright (C) 2006  Wengo
 #
@@ -15,53 +17,51 @@
 #  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_package(PkgConfig QUIET)
+if(PKG_CONFIG_FOUND)
+    pkg_search_module(PKG_SNDFILE "sndfile")
+endif()
 
-  find_path(SNDFILE_INCLUDE_DIR
+find_path(SNDFILE_INCLUDE_DIR
     NAMES
-      sndfile.h
+        sndfile.h
+    HINTS
+        ${PKG_SNDFILE_INCLUDE_DIRS}
     PATHS
-      /usr/include
-      /usr/local/include
-      /opt/local/include
-      /sw/include
-  )
-  
-  find_library(SNDFILE_LIBRARY
+        /usr/include
+        /usr/local/include
+        /opt/local/include
+        /sw/include
+    )
+
+find_library(SNDFILE_LIBRARY
     NAMES
-      sndfile
+        sndfile
+    HINTS
+        ${PKG_SNDFILE_LIBRARIES}
     PATHS
-      /usr/lib
-      /usr/local/lib
-      /opt/local/lib
-      /sw/lib
-  )
+        /usr/lib
+        /usr/local/lib
+        /opt/local/lib
+        /sw/lib
+)
 
-  set(SNDFILE_INCLUDE_DIRS
-    ${SNDFILE_INCLUDE_DIR}
-  )
-  set(SNDFILE_LIBRARIES
-    ${SNDFILE_LIBRARY}
-  )
+set(SNDFILE_CFLAGS "${PKG_SNDFILE_CFLAGS_OTHER}" CACHE STRING "CFLAGS of libsndfile")
 
-  if (SNDFILE_INCLUDE_DIRS AND SNDFILE_LIBRARIES)
+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)
+endif()
 
-  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)
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(SndFile DEFAULT_MSG SNDFILE_INCLUDE_DIRS SNDFILE_LIBRARIES)
 
-  # 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)
+if(NOT TARGET SndFile::SndFile)
+    add_library(__SndFile INTERFACE)
+    target_compile_options(__SndFile INTERFACE ${SNDFILE_CFLAGS})
+    target_include_directories(__SndFile INTERFACE ${SNDFILE_INCLUDE_DIRS})
+    target_link_libraries(__SndFile INTERFACE ${SNDFILE_LIBRARIES})
+    add_library(SndFile::SndFile ALIAS __SndFile)
+endif()