From 7cba7ddee053198ee3dc344470139f858cd913df Mon Sep 17 00:00:00 2001
From: Giles Atkinson <“gatk555@gmail.com”>
Date: Wed, 6 May 2026 17:55:52 +0100
Subject: [PATCH] Allow building without soundfile libraries.

---
 src/frontend/commands.c            | 36 +++++++++++++++++-------------
 src/frontend/dotcards.c            |  2 ++
 src/frontend/postcoms.c            |  2 ++
 src/frontend/sndprint.c            |  4 +++-
 src/spicelib/devices/vsrc/vsjack.c | 16 ++++++++++++-
 5 files changed, 42 insertions(+), 18 deletions(-)

diff --git a/src/frontend/commands.c b/src/frontend/commands.c
index c4e592246..027b9a0d9 100644
--- a/src/frontend/commands.c
+++ b/src/frontend/commands.c
@@ -248,14 +248,16 @@ struct comm spcp_coms[] = {
       { 040000, 040000, 040000, 040000 }, E_BEGINNING, 1, LOTS,
       arg_print,
       "[col] expr ... : Print vector values." } ,
-	{ "sndprint", com_sndprint, FALSE, FALSE,
-	  { 040000, 040000, 040000, 040000 }, E_BEGINNING, 1, LOTS,
-	  arg_print,
-	  "[col] expr ... : Print vector values." },
-	{ "sndparam", com_sndparam, FALSE, FALSE,
-	  { 1, 1, 1, 1 }, E_BEGINNING | E_NOPLOTS, 1, LOTS,
-	  arg_load,
-	  "file samplerate : set sndprint parameters." },
+#if defined(HAVE_LIBSNDFILE) && defined(HAVE_LIBSAMPLERATE)
+    { "sndprint", com_sndprint, FALSE, FALSE,
+      { 040000, 040000, 040000, 040000 }, E_BEGINNING, 1, LOTS,
+      arg_print,
+      "[col] expr ... : Print vector values." },
+    { "sndparam", com_sndparam, FALSE, FALSE,
+      { 1, 1, 1, 1 }, E_BEGINNING | E_NOPLOTS, 1, LOTS,
+      arg_load,
+      "file samplerate : set sndprint parameters." },
+#endif
 #ifdef XSPICE
     { "esave", EVTsave, FALSE, TRUE,
       { 040000, 040000, 040000, 040000 }, E_BEGINNING, 1, LOTS,
@@ -793,14 +795,16 @@ struct comm nutcp_coms[] = {
       { 040000, 040000, 040000, 040000 }, E_BEGINNING, 1, LOTS,
       arg_print,
       "[col] expr ... : Print vector values." } ,
-	{ "sndprint", com_sndprint, FALSE, FALSE,
-	  { 040000, 040000, 040000, 040000 }, E_BEGINNING, 1, LOTS,
-	  arg_print,
-	  "[col] expr ... : Print vector values." },
-	{ "sndparam", com_sndparam, FALSE, FALSE,
-	  { 1, 1, 1, 1 }, E_BEGINNING | E_NOPLOTS, 1, LOTS,
-	  arg_load,
-	  "file samplerate : set sndprint parameters." },
+#if defined(HAVE_LIBSNDFILE) && defined(HAVE_LIBSAMPLERATE)
+    { "sndprint", com_sndprint, FALSE, FALSE,
+      { 040000, 040000, 040000, 040000 }, E_BEGINNING, 1, LOTS,
+      arg_print,
+      "[col] expr ... : Print vector values." },
+    { "sndparam", com_sndparam, FALSE, FALSE,
+      { 1, 1, 1, 1 }, E_BEGINNING | E_NOPLOTS, 1, LOTS,
+      arg_load,
+      "file samplerate : set sndprint parameters." },
+#endif
     { "load", com_load, FALSE, TRUE,
       { 1, 1, 1, 1 }, E_BEGINNING | E_NOPLOTS, 1, LOTS,
       arg_load,
diff --git a/src/frontend/dotcards.c b/src/frontend/dotcards.c
index 6dc2bc034..60a3e1ac6 100644
--- a/src/frontend/dotcards.c
+++ b/src/frontend/dotcards.c
@@ -355,6 +355,7 @@ ft_cktcoms(bool terse)
                     fprintf(cp_err, "Error: .plot: no %s analysis found.\n",
                             plottype);
             }
+#if defined(HAVE_LIBSNDFILE) && defined(HAVE_LIBSAMPLERATE)
         } else if (eq(command->wl_word, ".sndparam")) {
             if (terse) {
                 fprintf(cp_out, ".sndparam line ignored since rawfile was produced.\n");
@@ -390,6 +391,7 @@ ft_cktcoms(bool terse)
                 if (!found)
                     fprintf(cp_err, "Error: .sndprint: no %s analysis found.\n", plottype);
             }
+#endif // Sound file support
         } else if (ciprefix(".four", command->wl_word)) {
             if (terse) {
                 fprintf(cp_out,
diff --git a/src/frontend/postcoms.c b/src/frontend/postcoms.c
index 248aa5a99..425587071 100644
--- a/src/frontend/postcoms.c
+++ b/src/frontend/postcoms.c
@@ -430,6 +430,7 @@ done:
     tfree(buf2);
 }
 
+#if defined(HAVE_LIBSNDFILE) && defined(HAVE_LIBSAMPLERATE)
 
 /* tweaked version of print - write sound-files
 */
@@ -558,6 +559,7 @@ com_sndparam(wordlist* wl)
 		snd_configure(file, srate, fmt, mult, off, oversampling);
 	return;
 }
+#endif // HAVE_LIBSNDFILE
 
 
 /* Write out some data into a ngspice raw file with 'write filename expr'.
diff --git a/src/frontend/sndprint.c b/src/frontend/sndprint.c
index e35b2dec5..9174a7c3b 100644
--- a/src/frontend/sndprint.c
+++ b/src/frontend/sndprint.c
@@ -1,12 +1,13 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <sndfile.h>
 #include <string.h>
 #include <math.h>
 #include <inttypes.h>
 #include "sndprint.h"
 #include "ngspice/ngspice.h"
 
+#if defined(HAVE_LIBSNDFILE) && defined(HAVE_LIBSAMPLERATE)
+#include <sndfile.h>
 
 static int o_samplerate = 48000;
 static int o_sndfmt = (SF_FORMAT_WAV | SF_FORMAT_PCM_24);
@@ -323,3 +324,4 @@ double snd_get_samplerate(void) {
 
 /* vi:set ts=8 sts=2 sw=2: */
 
+#endif // HAVE_LIBSNDFILE
diff --git a/src/spicelib/devices/vsrc/vsjack.c b/src/spicelib/devices/vsrc/vsjack.c
index 06bf3b45a..9988fc695 100644
--- a/src/spicelib/devices/vsrc/vsjack.c
+++ b/src/spicelib/devices/vsrc/vsjack.c
@@ -2,6 +2,9 @@
 #include <assert.h>
 #include <string.h>
 
+#include "ngspice/ngspice.h"
+
+#if defined(HAVE_LIBSNDFILE) && defined(HAVE_LIBSAMPLERATE)
 /////// SNDFILE ///////
 #include <stdlib.h>
 #include <math.h>
@@ -12,7 +15,6 @@
 // the whole audio file, do it in smaller chunks
 #define VS_RESAMPLING_CHUNK 1024
 
-#include "ngspice/ngspice.h"
 #include "vsjack.h"
 
 extern char* inp_pathresolve(const char* name);
@@ -229,3 +231,15 @@ int vsjack_open(int d, char *file, int channel, double oversampling) {
 }
 
 /* vi:set ts=8 sts=4 sw=4: */
+#else // not HAVE_LIBSNDFILE
+
+double vsjack_get_value(int d, double time, double time_offset) {
+    return 0;
+}
+
+int vsjack_open(int d, char *file, int channel, double oversampling) {
+    fprintf(stderr, "Error: Ngspice built without soundfile support.\n");
+    controlled_exit(1);
+    return -1;
+}
+#endif