Make sbin install dir configurable

Required in Fedora 42.

https://fedoraproject.org/wiki/Changes/Unify_bin_and_sbin

build.sh

@@ -20,6 +20,7 @@ if [ "$HOSTTYPE" = "x86_64" ]; then
 else
    LIB_DIR="/usr/lib"
 fi
+SBIN_DIR="/usr/sbin"
 
 SYSCONF_DIR="/etc"
 SHARE_DIR="/usr/share"
@@ -57,6 +58,7 @@ usage() {
     echo "    --prefix-dir=<path>    Prefix directory (default: $PREFIX_DIR)."
     echo "    --include-dir=<path>   Include directory (default: $INCLUDE_DIR)."
     echo "    --lib-dir=<path>       Library directory (default: $LIB_DIR)."
+    echo "    --sbin-dir=<path>      Superuser binary directory (default: $SBIN_DIR)"
     echo "    --sysconf-dir=<path>   System configuration directory (default: $SYSCONF_DIR)."
     echo "    --share-dir=<path>     Share directory (default: $SHARE_DIR)."
     echo "    --cmake=<path>         Path to CMake executable"
@@ -217,6 +219,9 @@ while getopts v-: arg ; do
         lib-dir=?*)
             LIB_DIR=$(readlink -f "$LONG_OPTARG")
             ;;
+        sbin-dir=?*)
+            SBIN_DIR=$(readlink -f "$LONG_OPTARG")
+            ;;
         sysconf-dir=?*)
             SYSCONF_DIR=$(readlink -f "$LONG_OPTARG")
             ;;
@@ -282,8 +287,8 @@ while getopts v-: arg ; do
         '')
             break # "--" terminates argument processing
             ;;
-        name* | work-dir* | prefix-dir* | include-dir* | lib-dir* | sysconf-dir* | share-dir* | cmake* | \
-        java-home* | jni-dir* | install-dir* | \
+        name* | work-dir* | prefix-dir* | include-dir* | lib-dir* | sbin-dir* | sysconf-dir* | share-dir* | \
+        cmake* | java-home* | jni-dir* | install-dir* | \
         source-tag* | spec* | version* | release* | dist*)
             echo "ERROR: Missing argument for --$OPTARG option" >&2
             exit 1
@@ -319,6 +324,7 @@ if [ "$DEBUG" = true ] ; then
     echo "PREFIX_DIR: $PREFIX_DIR"
     echo "INCLUDE_DIR: $INCLUDE_DIR"
     echo "LIB_DIR: $LIB_DIR"
+    echo "SBIN_DIR: $SBIN_DIR"
     echo "SYSCONF_DIR: $SYSCONF_DIR"
     echo "SHARE_DIR: $SHARE_DIR"
     echo "CMAKE: $CMAKE"
@@ -376,6 +382,7 @@ if [ "$BUILD_TARGET" = "dist" ] ; then
 
     OPTIONS+=(-DINCLUDE_INSTALL_DIR:PATH="$INCLUDE_DIR")
     OPTIONS+=(-DLIB_INSTALL_DIR:PATH="$LIB_DIR")
+    OPTIONS+=(-DSBIN_INSTALL_DIR:PATH="$SBIN_DIR")
     OPTIONS+=(-DSYSCONF_INSTALL_DIR:PATH="$SYSCONF_DIR")
     OPTIONS+=(-DSHARE_INSTALL_PREFIX:PATH="$SHARE_DIR")