Use version 2.1.0 of libsbsms

This is actually the exact code we already use, but Clayton has
set up a github repo for the release to make it available to
distros.

cmake-proxies/libsbsms/CMakeLists.txt

@@ -0,0 +1,48 @@
+
+add_library( ${TARGET} STATIC )
+
+def_vars()
+
+list( APPEND SOURCES
+   PRIVATE
+      ${TARGET_ROOT}/src/buffer.cpp
+      ${TARGET_ROOT}/src/dBTable.cpp
+      ${TARGET_ROOT}/src/fft.cpp
+      ${TARGET_ROOT}/src/grain.cpp
+      ${TARGET_ROOT}/src/resample.cpp
+      ${TARGET_ROOT}/src/sbsms.cpp
+      ${TARGET_ROOT}/src/slide.cpp
+      ${TARGET_ROOT}/src/sms.cpp
+      ${TARGET_ROOT}/src/subband.cpp
+      ${TARGET_ROOT}/src/track.cpp
+      ${TARGET_ROOT}/src/trackpoint.cpp
+)
+
+list( APPEND INCLUDES
+   PRIVATE
+      ${_PRVDIR}
+   PUBLIC
+      ${TARGET_ROOT}/include
+)
+
+list( APPEND OPTIONS
+   PRIVATE
+      $<$<C_COMPILER_ID:AppleClang,Clang,GNU>:-Wno-enum-compare>
+      ${MMX_FLAG}
+      ${SSE_FLAG}
+)
+
+find_package( Threads )
+if( Threads_FOUND AND CMAKE_USE_PTHREADS_INIT )
+   set( MULTITHREADED 1 )
+endif()
+
+set( ENABLE_SSE ${HAVE_SSE} )
+
+configure_file( config.h.in private/config.h )
+
+organize_source( "${TARGET_ROOT}" "" "${SOURCES}" )
+target_sources( ${TARGET} PRIVATE ${SOURCES} )
+target_compile_options( ${TARGET} PRIVATE ${OPTIONS} )
+target_include_directories( ${TARGET} PRIVATE ${INCLUDES} )
+

cmake-proxies/libsbsms/config.h.in

@@ -0,0 +1,75 @@
+/* src/config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to enable sse */
+#cmakedefine ENABLE_SSE 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#cmakedefine HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#cmakedefine HAVE_INTTYPES_H 1
+
+/* Define if you have C99's lrint function. */
+#cmakedefine HAVE_LRINT 1
+
+/* Define if you have C99's lrintf function. */
+#cmakedefine HAVE_LRINTF 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#cmakedefine HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#cmakedefine HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#cmakedefine HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#cmakedefine HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#cmakedefine HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#cmakedefine HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#cmakedefine HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#cmakedefine HAVE_UNISTD_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#cmakedefine LT_OBJDIR  "@LT_OBJDIR@"
+
+/* Define to compile multithreaded sbsms */
+#cmakedefine MULTITHREADED 1
+
+/* Name of package */
+#cmakedefine PACKAGE "@PACKAGE@"
+
+/* Define to the address where bug reports for this package should be sent. */
+#cmakedefine PACKAGE_BUGREPORT "@PACKAGE_BUGREPORT@"
+
+/* Define to the full name of this package. */
+#cmakedefine PACKAGE_NAME "@PACKAGE_NAME@"
+
+/* Define to the full name and version of this package. */
+#cmakedefine PACKAGE_STRING "@PACKAGE_STRING@"
+
+/* Define to the one symbol short name of this package. */
+#cmakedefine PACKAGE_TARNAME "@PACKAGE_TARNAME@"
+
+/* Define to the home page for this package. */
+#cmakedefine PACKAGE_URL "@PACKAGE_URL@"
+
+/* Define to the version of this package. */
+#cmakedefine PACKAGE_VERSION "@PACKAGE_VERSION@"
+
+/* Define to 1 if you have the ANSI C header files. */
+#cmakedefine STDC_HEADERS 1
+
+/* Version number of package */
+#cmakedefine VERSION "@VERSION@"
+