From https://github.com/Draghtnod/Pidgin-GPG/pull/9
From: "Azamat H. Hackimov" <azamat.hackimov@gmail.com>
Date: Sat, 17 Feb 2024 13:28:40 +0300
Subject: [PATCH] Fix compilation on MUSL systems

In MUSL encrypt() is part of unistd.h, which conflicts with internal
static function encrypt(). Renamed last one to fix that.

See: https://bugs.gentoo.org/831185
--- a/src/pidgin-gpg.c
+++ b/src/pidgin-gpg.c
@@ -604,7 +604,7 @@ static char* verify( const char* sig_str ) {
  * encrypt a plain string with the key found with fingerprint fpr
  * FREE MEMORY AFTER USAGE OF RETURN VALUE!
  * ------------------ */
-static char* encrypt( gpgme_ctx_t* ctx, gpgme_key_t* key_arr, const char* plain_str, const char* fpr ) {
+static char* pidgin_gpg_encrypt( gpgme_ctx_t* ctx, gpgme_key_t* key_arr, const char* plain_str, const char* fpr ) {
 	if( ctx == NULL ) {
 		purple_debug_error( PLUGIN_ID, "encrypt: missing ctx\n" );
 		return NULL;
@@ -1054,7 +1054,7 @@ void jabber_send_signal_cb( PurpleConnection* pc, xmlnode** packet, gpointer unu
 			g_free( bare_jid );
 
 			// encrypt message
-			enc_str = encrypt( &item->ctx, item->key_arr, message, item->fpr );
+			enc_str = pidgin_gpg_encrypt( &item->ctx, item->key_arr, message, item->fpr );
 			g_free( message );
 			if( enc_str != NULL ) {
 				// remove message from body
-- 
2.43.0