From a866b062b17ab94b16b817ab9969c561364a4d72 Mon Sep 17 00:00:00 2001
From: Matt Jolly <Matt.Jolly@footclan.ninja>
Date: Mon, 1 Apr 2024 08:36:51 +1000
Subject: [PATCH] m4: fix rustls builds

This patch consolidates the following commits to do with rustls
detection using pkg-config:

- https://github.com/curl/curl/commit/9c4209837094781d5eef69ae6bcad0e86b64bf99
- https://github.com/curl/curl/commit/5a50cb5a18a141a463148562dab83fa3be1a3b90
---
 m4/curl-rustls.m4 | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/m4/curl-rustls.m4 b/m4/curl-rustls.m4
index 7c55230..8082cf9 100644
--- a/m4/curl-rustls.m4
+++ b/m4/curl-rustls.m4
@@ -142,6 +142,11 @@ if test "x$OPT_RUSTLS" != xno; then
       LIBS="$SSL_LIBS $LIBS"
       USE_RUSTLS="yes"
       ssl_msg="rustls"
+      AC_DEFINE(USE_RUSTLS, 1, [if rustls is enabled])
+      AC_SUBST(USE_RUSTLS, [1])
+      USE_RUSTLS="yes"
+      RUSTLS_ENABLED=1
+      test rustls != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes
     else
       AC_MSG_ERROR([pkg-config: Could not find rustls])
     fi
@@ -174,5 +179,15 @@ if test "x$OPT_RUSTLS" != xno; then
   fi
 
   test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg"
+
+  if test X"$OPT_RUSTLS" != Xno &&
+    test "$RUSTLS_ENABLED" != "1"; then
+    AC_MSG_NOTICE([OPT_RUSTLS: $OPT_RUSTLS])
+    AC_MSG_NOTICE([RUSTLS_ENABLED: $RUSTLS_ENABLED])
+    AC_MSG_ERROR([--with-rustls was given but Rustls could not be detected])
+  fi
 fi
 ])
+
+
+RUSTLS_ENABLED
-- 
2.44.0