https://gitlab.com/eivnaes/sstp-client/-/merge_requests/4

From 1d822cca1c4e5b4db91bcbabe29bf43c05449af7 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Mon, 23 Jan 2023 02:26:28 +0000
Subject: [PATCH 1/2] libsstp-log: add missing <time.h> include

Needed for time_t. Fixes build w/ GCC 12 on musl.

Bug: https://bugs.gentoo.org/854858
--- a/src/libsstp-log/sstp-log-private.h
+++ b/src/libsstp-log/sstp-log-private.h
@@ -24,6 +24,7 @@
 #ifndef __SSTP_LOG_PRIVATE_H__
 #define __SSTP_LOG_PRIVATE_H__
 
+#include <time.h>
 
 /*! Keep attributes aligned to a 32-bit boundary */
 #define LOG_ALIGN32(n)  \

From 835c6226aaccb4c39a8c50dec5d3afd87315fddd Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Mon, 23 Jan 2023 02:28:18 +0000
Subject: [PATCH 2/2] pppd-plugin: workaround broken pppd.h header for memcpy

ppp's pppd.h defines a BCOPY macro which expands to memcpy but doesn't
include <string.h> which provides it. Include it in pppd-plugin instead
to workaround it, as it'll be a while before we can assume the system ppp
is fixed.

Bug: https://bugs.gentoo.org/870865
--- a/src/pppd-plugin/sstp-mppe.c
+++ b/src/pppd-plugin/sstp-mppe.c
@@ -24,6 +24,7 @@
 
 #include <config.h>
 
+#include <string.h>
 #include <pppd/pppd.h>
 #include <sstp-mppe.h>