From 35b5ca0f68ef772bff9d1559d79a672eb4a1ccd4 Mon Sep 17 00:00:00 2001
From: Bertho Stultiens <bertho@vagrearg.org>
Date: Fri, 29 May 2026 08:42:20 +0200
Subject: [PATCH] build: fail configure if libcap-dev is missing.

---
 src/configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/configure.ac b/src/configure.ac
index 3afc17337f2..f294f68b895 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -1544,6 +1544,9 @@ if test "x$HAVE_LIBFMT" = "xno"; then
     AC_MSG_ERROR([libfmt header not found. Install with 'sudo apt-get install libfmt-dev'])
 fi
 
+AC_CHECK_HEADERS([sys/capability.h], [], [
+    AC_MSG_ERROR([libcap header not found. Please install libcap-dev])
+])
 AC_CHECK_HEADERS([editline/readline.h histedit.h], [], [
     AC_MSG_ERROR([libedit headers not found. Please install libedit-dev or libedit-devel.])
 ])