--- a/make/install-pc-file.sh	Mon Nov 10 21:56:09 2025 +0100
+++ b/make/install-pc-file.sh	Tue Nov 11 17:02:26 2025 +0100
@@ -1,15 +1,16 @@
 #!/bin/sh
 
 if [ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ] ; then
-  echo "Illegal use."
+  echo "Usage: $0 <version> <libdir> <includedir> [destdir]"
   exit 1
 fi
 
 version="$1"
 libdir="$2"
 includedir="$3"
+destdir="$4"
 
-cat << EOF > "$libdir/pkgconfig/ucx.pc"
+cat << EOF > "$destdir$libdir/pkgconfig/ucx.pc"
 libdir=$libdir
 includedir=$includedir