dep: Add libsamplerate

dep/libsamplerate/cmake/FindFLAC.cmake

@@ -0,0 +1,63 @@
+# - Find FLAC
+# Find the native FLAC includes and libraries
+#
+#  FLAC_INCLUDE_DIRS - where to find FLAC headers.
+#  FLAC_LIBRARIES    - List of libraries when using libFLAC.
+#  FLAC_FOUND        - True if libFLAC found.
+#  FLAC_DEFINITIONS  - FLAC compile definitons 
+
+if(FLAC_INCLUDE_DIR)
+  # Already in cache, be silent
+  set(FLAC_FIND_QUIETLY TRUE)
+endif()
+
+find_package(Ogg QUIET)
+
+find_package(PkgConfig QUIET)
+pkg_check_modules(PC_FLAC QUIET flac)
+
+set(FLAC_VERSION ${PC_FLAC_VERSION})
+
+find_path(FLAC_INCLUDE_DIR FLAC/stream_decoder.h
+  HINTS
+    ${PC_FLAC_INCLUDEDIR}
+    ${PC_FLAC_INCLUDE_DIRS}
+    ${FLAC_ROOT})
+
+# MSVC built libraries can name them *_static, which is good as it
+# distinguishes import libraries from static libraries with the same extension.
+find_library(FLAC_LIBRARY
+  NAMES
+    FLAC
+    libFLAC
+    libFLAC_dynamic
+    libFLAC_static
+  HINTS
+    ${PC_FLAC_LIBDIR}
+    ${PC_FLAC_LIBRARY_DIRS}
+    ${FLAC_ROOT})
+
+# Handle the QUIETLY and REQUIRED arguments and set FLAC_FOUND to TRUE if
+# all listed variables are TRUE.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(FLAC
+  REQUIRED_VARS
+    FLAC_LIBRARY
+    FLAC_INCLUDE_DIR
+    Ogg_FOUND
+  VERSION_VAR
+        FLAC_VERSION)
+
+if(FLAC_FOUND)
+  set(FLAC_INCLUDE_DIRS ${FLAC_INCLUDE_DIR} ${Ogg_INCLUDE_DIRS})
+  set(FLAC_LIBRARIES ${FLAC_LIBRARY} ${Ogg_LIBRARIES})
+    if(NOT TARGET FLAC::FLAC)
+    add_library(FLAC::FLAC UNKNOWN IMPORTED)
+    set_target_properties(FLAC::FLAC PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${FLAC_INCLUDE_DIR}"
+      IMPORTED_LOCATION "${FLAC_LIBRARY}"
+      INTERFACE_LINK_LIBRARIES Ogg::ogg)
+  endif()
+endif()
+
+mark_as_advanced(FLAC_INCLUDE_DIR FLAC_LIBRARY)