diff --git a/libr/syscall/d/meson.build b/libr/syscall/d/meson.build
index b8907d4e0c..d83f92ace1 100644
--- a/libr/syscall/d/meson.build
+++ b/libr/syscall/d/meson.build
@@ -21,10 +21,29 @@ sdb_files = [
   'windows-x86-64'
 ]
 
+sdbtmp_gen_path = '@0@/@1@'.format(meson.current_source_dir(), 'gen.sh')
+sdbtmp_gen_cmd = [
+  py3_exe,
+  '-c',
+  'from sys import argv; __import__("os").system("@0@ <%s >%s" % (argv[1], argv[2]))'.format(sdbtmp_gen_path),
+  '@INPUT@',
+  '@OUTPUT@'
+]
+
 foreach file : sdb_files
+  outfile_tmp = '@0@.sdb.txt.tmp'.format(file)
+  outfile_tmp_dep = custom_target(outfile_tmp,
+    input: '@0@.sdb.txt'.format(file),
+    output: outfile_tmp,
+    command: sdbtmp_gen_cmd,
+    build_by_default: true,
+    build_always: false,
+    install: false
+  )
+
   outfile = '@0@.sdb'.format(file)
   custom_target(outfile,
-    input: '@0@.sdb.txt'.format(file),
+    input: [outfile_tmp_dep],
     output: outfile,
     command: sdb_gen_cmd,
     depends: sdb_exe,