diff -up libsndfile-1.1.0/CMakeLists.txt.system-gsm libsndfile-1.1.0/CMakeLists.txt

--- libsndfile-1.1.0/CMakeLists.txt.system-gsm	2022-08-06 09:24:33.000000000 +0300

+++ libsndfile-1.1.0/CMakeLists.txt	2022-09-06 17:41:57.677324739 +0300

@@ -273,7 +273,6 @@ add_library (sndfile

 	src/double64.c

 	src/ima_adpcm.c

 	src/ms_adpcm.c

-	src/gsm610.c

 	src/dwvw.c

 	src/vox_adpcm.c

 	src/interleave.c

@@ -334,23 +333,6 @@ add_library (sndfile

 	src/mpeg.c

 	src/mpeg_decode.c

 	src/mpeg_l3_encode.c

-	src/GSM610/config.h

-	src/GSM610/gsm.h

-	src/GSM610/gsm610_priv.h

-	src/GSM610/add.c

-	src/GSM610/code.c

-	src/GSM610/decode.c

-	src/GSM610/gsm_create.c

-	src/GSM610/gsm_decode.c

-	src/GSM610/gsm_destroy.c

-	src/GSM610/gsm_encode.c

-	src/GSM610/gsm_option.c

-	src/GSM610/long_term.c

-	src/GSM610/lpc.c

-	src/GSM610/preprocess.c

-	src/GSM610/rpe.c

-	src/GSM610/short_term.c

-	src/GSM610/table.c

 	src/G72x/g72x.h

 	src/G72x/g72x_priv.h

 	src/G72x/g721.c

@@ -399,6 +381,7 @@ target_link_libraries (sndfile

 		$<$<BOOL:${HAVE_EXTERNAL_XIPH_LIBS}>:Opus::opus>

 		$<$<BOOL:${HAVE_MPEG}>:MPG123::libmpg123>

 		$<$<BOOL:${HAVE_MPEG}>:mp3lame::mp3lame>

+		-lgsm

 	)

 set_target_properties (sndfile PROPERTIES

 	PUBLIC_HEADER "${sndfile_HDRS}"

diff -up libsndfile-1.1.0/Makefile.am.system-gsm libsndfile-1.1.0/Makefile.am

--- libsndfile-1.1.0/Makefile.am.system-gsm	2022-03-27 10:55:12.000000000 +0200

+++ libsndfile-1.1.0/Makefile.am	2022-04-25 22:39:56.976112391 +0200

@@ -47,7 +47,6 @@ SYMBOL_FILES = src/Symbols.gnu-binutils

 EXTRA_DIST += include/sndfile.h.in src/config.h.in src/test_endswap.tpl src/test_endswap.def \

 	$(SYMBOL_FILES) src/create_symbols_file.py src/binheader_writef_check.py \

-	src/GSM610/README src/GSM610/COPYRIGHT src/GSM610/ChangeLog \

 	src/G72x/README src/G72x/README.original src/G72x/ChangeLog \

 	src/make-static-lib-hidden-privates.sh \

 	src/config.h.cmake

@@ -72,7 +71,7 @@ src_libsndfile_la_SOURCES = src/sndfile.

 	src/ogg.c src/ogg.h src/ogg_vorbis.c src/ogg_speex.c src/ogg_pcm.c src/ogg_opus.c src/ogg_vcomment.c src/ogg_vcomment.h \

 	src/common.h src/sfconfig.h src/sfendian.h src/wavlike.h src/sf_unistd.h src/chanmap.h src/mpeg.c

 nodist_src_libsndfile_la_SOURCES = $(nodist_include_HEADERS)

-src_libsndfile_la_LIBADD = src/GSM610/libgsm.la src/G72x/libg72x.la src/ALAC/libalac.la \

+src_libsndfile_la_LIBADD = -lgsm src/G72x/libg72x.la src/ALAC/libalac.la \

 	src/libcommon.la $(EXTERNAL_XIPH_LIBS) -lm $(MPEG_LIBS)

 EXTRA_src_libsndfile_la_DEPENDENCIES = $(SYMBOL_FILES)

@@ -91,17 +90,6 @@ src_test_main_SOURCES = src/test_main.c

 	src/test_binheader_writef.c src/test_nms_adpcm.c

 src_test_main_LDADD = src/libcommon.la

-##############

-# src/GSM610 #

-##############

-

-noinst_LTLIBRARIES += src/GSM610/libgsm.la

-src_GSM610_libgsm_la_SOURCES = src/GSM610/config.h src/GSM610/gsm.h src/GSM610/gsm610_priv.h \

-	src/GSM610/add.c src/GSM610/code.c src/GSM610/decode.c src/GSM610/gsm_create.c \

-	src/GSM610/gsm_decode.c src/GSM610/gsm_destroy.c src/GSM610/gsm_encode.c \

-	src/GSM610/gsm_option.c src/GSM610/long_term.c src/GSM610/lpc.c src/GSM610/preprocess.c \

-	src/GSM610/rpe.c src/GSM610/short_term.c src/GSM610/table.c

-

 ############

 # src/G72x #

 ############

diff -up libsndfile-1.1.0/src/gsm610.c.system-gsm libsndfile-1.1.0/src/gsm610.c

--- libsndfile-1.1.0/src/gsm610.c.system-gsm	2021-05-17 11:12:28.000000000 +0200

+++ libsndfile-1.1.0/src/gsm610.c	2022-04-25 22:37:21.059496852 +0200

@@ -27,7 +27,7 @@

 #include "sfendian.h"

 #include "common.h"

 #include "wavlike.h"

-#include "GSM610/gsm.h"

+#include <gsm.h>

 #define	GSM610_BLOCKSIZE		33

 #define	GSM610_SAMPLES			160

@@ -391,7 +391,8 @@ gsm610_seek	(SF_PRIVATE *psf, int UNUSED

 		psf_fseek (psf, psf->dataoffset, SEEK_SET) ;

 		pgsm610->blockcount = 0 ;

-		gsm_init (pgsm610->gsm_data) ;

+                gsm_destroy (pgsm610->gsm_data) ;

+                pgsm610->gsm_data = gsm_create () ;

 		if ((SF_CONTAINER (psf->sf.format)) == SF_FORMAT_WAV ||

 				(SF_CONTAINER (psf->sf.format)) == SF_FORMAT_W64)

 			gsm_option (pgsm610->gsm_data, GSM_OPT_WAV49, &true_flag) ;