Prevent libsoxr from making so much console noise

CMakeLists.txt

@@ -13,6 +13,7 @@ set(WITH_LSR_BINDINGS OFF)
 set(BUILD_TESTS OFF)
 set(WITH_OPENMP OFF)
 set(BUILD_SHARED_LIBS OFF)
+set(SOXR_SILENT ON)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/soxr/cmake/Modules")
 add_subdirectory(soxr)
 

soxr/CMakeLists.txt

@@ -49,6 +49,7 @@ cmake_dependent_option (WITH_AVFFT "Use libavcodec (LGPL) for SIMD DFT." OFF
   "WITH_SIMD;NOT WITH_PFFFT" OFF)
 cmake_dependent_option (WITH_PFFFT "Use PFFFT (BSD-like licence) for SIMD DFT." ON
   "WITH_SIMD;NOT WITH_AVFFT" OFF)
+option (SOXR_SILENT "Disable debug messages, even in debug mode" OFF)
 if (UNIX)
   if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/lsr-tests)
     cmake_dependent_option (BUILD_LSR_TESTS "Build LSR tests." OFF
@@ -106,6 +107,10 @@ if (WITH_AVFFT)
   endif ()
 endif ()
 
+if (SOXR_SILENT)
+  add_definitions (-DSOXR_SILENT=1)
+endif ()
+
 check_function_exists (lrint HAVE_LRINT)
 check_include_files (fenv.h HAVE_FENV_H)
 test_big_endian (WORDS_BIGENDIAN)

soxr/src/internal.h

@@ -24,7 +24,7 @@
   #define UNUSED
 #endif
 
-#if defined NDEBUG
+#if defined NDEBUG || SOXR_SILENT
   #ifdef __GNUC__
     void lsx_dummy(char const *, ...);
   #else