diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23fb959..7a731e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
 # Changelog
+## 0.1.0a5
+- Handled the case that no symbol is exported in .o file
 ## 0.1.0a4
 - Added `compile_flags` property to `Gecko` class
 ## 0.1.0a3
diff --git a/setup.cfg b/setup.cfg
index 4d7d3a8..38d3abe 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = supGecko
-version = 0.1.0a4
+version = 0.1.0a5
 author = sup39
 author_email = sms@sup39.dev
 description = A helper library to write Gecko code
@@ -15,7 +15,8 @@ classifiers =
   License :: OSI Approved :: MIT License
 
 [options]
-packages = find:
+packages = find_namespace:
+include_package_data = True
 python_requires = >=3.8
 
 [options.packages.find]
diff --git a/src/supGecko/asm.py b/src/supGecko/asm.py
index 0fb1ba3..c2a183c 100644
--- a/src/supGecko/asm.py
+++ b/src/supGecko/asm.py
@@ -7,10 +7,15 @@ import tempfile
 import os
 import subprocess
 
-def system(argv, *args, **kwargs):
-  r = subprocess.run(argv, *args, capture_output=True, text=True, **kwargs)
+def system(argv, *, catch=None, **kwargs):
+  r = subprocess.run(argv, capture_output=True, text=True, **kwargs)
   if r.returncode:
-    raise Exception(f'Fail to run {argv[0]} (code={r.returncode}): {r.stderr}')
+    if catch is not None:
+      # catch(r) returns the alternate stdout for handled errors
+      o = catch(r)
+      # if catch(r) returns None, the error is unexpected and should be raised
+      if o is not None: return o
+    raise Exception(f'Fail to run {argv} (code={r.returncode}): {r.stderr}')
   return r.stdout
 
 def write_extra_input(x, file):
@@ -83,10 +88,11 @@ def compile(
 
     # gecko symbols
     symbols = {}
+    errmsg_nosymbol = "section '.text' mentioned in a -j option, but not found in any input file"
     lines = system([
       'powerpc-eabi-objdump',
       '-tj.text', distLOBJ,
-    ]).split('\n')
+    ], catch=lambda r: '' if r.returncode==1 and errmsg_nosymbol in r.stderr else None).split('\n')
     for line in lines[4:-3]:
       ch1, ch2 = line.split('\t')
       addr = int(ch1.split(None, 2)[0], 16)