From 5c8258b203ddf7791796bd6cf05785a101b5ab4c Mon Sep 17 00:00:00 2001
From: Jan Wielemaker <jan@swi-prolog.org>
Date: Thu, 24 Oct 2024 09:22:28 +0200
Subject: [PATCH] BUILD: Make sure to clear ``DISPLAY`` when running xpce steps
 (one more)

---
 man/CMakeLists.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/man/CMakeLists.txt b/man/CMakeLists.txt
index 4984ac56ec..2e227c5e19 100644
--- a/man/CMakeLists.txt
+++ b/man/CMakeLists.txt
@@ -135,7 +135,8 @@ function(pldoc tex input)
 
     add_custom_command(
 	OUTPUT  ${tex}
-	COMMAND ${PROG_SWIPL} -f none --no-packs ${PLDOC2TEX} ${options} "${input}"
+	COMMAND ${CMAKE_COMMAND} -E env --unset=DISPLAY
+		${PROG_SWIPL} -f none --no-packs ${PLDOC2TEX} ${options} "${input}"
 	DEPENDS ${depends}
 	BYPRODUCTS ${byproducts}
 	VERBATIM)