Submitted upstream at https://gitlab.kitware.com/cmake/cmake/-/merge_requests/7670.

diff --git a/Source/cmCurl.cxx b/Source/cmCurl.cxx
index 28ee24dfe9..fc5405213a 100644
--- a/Source/cmCurl.cxx
+++ b/Source/cmCurl.cxx
@@ -38,6 +38,14 @@ std::string cmCurlSetCAInfo(::CURL* curl, const std::string& cafile)
     ::CURLcode res = ::curl_easy_setopt(curl, CURLOPT_CAINFO, cafile.c_str());
     check_curl_result(res, "Unable to set TLS/SSL Verify CAINFO: ");
   }
+  /* Honor the user-configurable OpenSSL environment variables. */
+  else if (cmSystemTools::GetEnv("SSL_CERT_FILE", e)) {
+    ::CURLcode res = ::curl_easy_setopt(curl, CURLOPT_CAINFO, e.c_str());
+    check_curl_result(res, "Unable to set TLS/SSL Verify CAINFO: ");
+  } else if (cmSystemTools::GetEnv("SSL_CERT_DIR", e)) {
+    ::CURLcode res = ::curl_easy_setopt(curl, CURLOPT_CAPATH, e.c_str());
+    check_curl_result(res, "Unable to set TLS/SSL Verify CAINFO: ");
+  }
 #ifdef CMAKE_FIND_CAFILE
 #  define CMAKE_CAFILE_FEDORA "/etc/pki/tls/certs/ca-bundle.crt"
   else if (cmSystemTools::FileExists(CMAKE_CAFILE_FEDORA, true)) {
bbc1f8d878aa75c72747b944d78cf6'>refs</a><a class='active' href='/guix/log/gnu/tests/audio.scm'>log</a><a href='/guix/tree/gnu/tests/audio.scm?id=4d73e4b6b4bbc1f8d878aa75c72747b944d78cf6'>tree</a><a href='/guix/commit/gnu/tests/audio.scm?id=4d73e4b6b4bbc1f8d878aa75c72747b944d78cf6'>commit</a><a href='/guix/diff/gnu/tests/audio.scm?id=4d73e4b6b4bbc1f8d878aa75c72747b944d78cf6'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/tests/audio.scm'>
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<tr><td><span title='2020-11-06 23:14:14 +0100'>2020-11-06</span></td><td><a href='/guix/commit/gnu/tests/audio.scm?id=9909eddbc55c6cac5acccab453993cd113aa38a1'>tests: mpd: Remove race condition; use default MPD configuration.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/audio.scm (%mpd-os): Use the default 'mpd-configuration'.
(run-mpd-test)[test]("mpd listening"): New test.
("mpc connect"): Use 'system*' and 'test-equal'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-08-13 07:36:32 +0100'>2017-08-13</span></td><td><a href='/guix/commit/gnu/tests/audio.scm?id=06465d2ba4291eb2046c90c3977a295a9b7c434b'>gnu: Add mpd service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/guix.texi: Add documentation.
* gnu/services/audio.scm (&lt;mpd-configuration&gt;): New record type.
  (mpd-service-type): New service type.
* gnu/tests/audio.scm: New file.
* gnu/local.mk: Add new files.

Signed-off-by: Christopher Baines &lt;mail@cbaines.net&gt;
</span></span></td><td>Peter Mikkelsen</td></tr>