Fix symlink installation paths for applets and script aliases in meson.build

meson.build

@@ -136,10 +136,10 @@ vx = executable('vx',
 )
 
 # Create symlinks for all applets pointing to the vx binary
+bindir = get_option('bindir')
 foreach name : ['patch', 'diff', 'cmp', 'diff3', 'sdiff', 'which', 'gzip', 'gunzip', 'zcat', 'uncompress', 'grep', 'egrep', 'fgrep', 'rgrep', 'find', 'xargs']
   meson.add_install_script('sh', '-c',
-    'ln -sf vx "$DESTDIR$1/' + name + '"',
-    '_', get_option('bindir'),
+    'ln -sf vx "$MESON_INSTALL_DESTDIR_PREFIX/' + bindir + '/' + name + '"',
   )
 endforeach
 
@@ -174,8 +174,7 @@ endforeach
 # Install symlinks for script aliases
 foreach pair : [['zcmp', 'zdiff'], ['zegrep', 'zgrep'], ['zfgrep', 'zgrep']]
   meson.add_install_script('sh', '-c',
-    'ln -sf ' + pair[1] + ' "$DESTDIR$1/' + pair[0] + '"',
-    '_', get_option('bindir'),
+    'ln -sf ' + pair[1] + ' "$MESON_INSTALL_DESTDIR_PREFIX/' + bindir + '/' + pair[0] + '"',
   )
 endforeach