diff --git a/etc/libemb.pl b/etc/libemb.pl
new file mode 100755
index 00000000..d6340b58
--- /dev/null
+++ b/etc/libemb.pl
@@ -0,0 +1,63 @@
+#!/usr/bin/perl
+
+@files = (
+    'piclib/built-in.scm',
+    'piclib/srfi/1.scm',
+    'piclib/srfi/26.scm',
+    'piclib/srfi/95.scm'
+    );
+
+print <<EOL;
+#include "picrin.h"
+#include "picrin/error.h"
+
+EOL
+
+foreach my $file (@files) {
+    my $var = &escape_v($file);
+    print "const char *$var =\n";
+
+    open IN, $file;
+    while (<IN>) {
+        chomp;
+        s/\\/\\\\/g;
+        s/"/\\"/g;
+        print "\"$_\"\n";
+    }
+    print ";\n\n";
+}
+close IN;
+
+print <<EOL;
+void
+pic_load_piclib(pic_state *pic)
+{
+  pic_try {
+EOL
+
+foreach my $file (@files) {
+    my $var = &escape_v($file);
+    print "    pic_load_cstr(pic, $var);\n";
+}
+
+print <<EOL;
+  }
+  pic_catch {
+    /* error! */
+    fputs("fatal error: failure in loading built-in.scm\\n", stderr);
+    fputs(pic_errmsg(pic), stderr);
+    abort();
+  }
+
+#if DEBUG
+  puts("successfully loaded stdlib");
+#endif
+}
+EOL
+
+sub escape_v {
+    my ($_) = @_;
+    s/\.scm$//g;
+    s/[\/-]/_/g;
+    $_;
+}
diff --git a/etc/libemb.py b/etc/libemb.py
deleted file mode 100644
index 6960f822..00000000
--- a/etc/libemb.py
+++ /dev/null
@@ -1,74 +0,0 @@
-import re
-import os
-from collections import OrderedDict
-
-outfn = 'src/load_piclib.c'
-
-libs = [
-    'piclib/built-in.scm',
-    'piclib/srfi/1.scm',
-    'piclib/srfi/26.scm',
-    'piclib/srfi/95.scm',
-]
-
-if os.path.exists(outfn):
-    os.remove(outfn)
-
-piclibs = OrderedDict()
-for lib in libs:
-    vname = lib[:-4]
-    vname = re.sub(r'/', r'_', vname)
-    vname = re.sub(r'-', r'_', vname)
-    piclibs[lib] = vname
-
-def escape_scm(infn, outfn, vname):
-    with open(outfn, 'a') as output:
-        output.write('const char *{} =\n'.format(vname))
-        with open(infn, 'r') as input:
-            for line in input:
-                output.write('"')
-                line = line.strip('\n')
-                line = re.sub(r'\\', r'\\\\', line)
-                line = re.sub(r'"', r'\"', line)
-                output.write(line)
-                output.write('\\n"\n')
-        output.write(';\n\n')
-
-piclib_load_head = """
-#include "picrin.h"
-#include "picrin/error.h"
-"""
-
-piclib_load_tail = """
-void
-pic_load_piclib(pic_state *pic)
-{{
-  pic_try {{
-    {}
-  }}
-  pic_catch {{
-    /* error! */
-    fputs("fatal error: failure in loading built-in.scm\\n", stderr);
-    fputs(pic_errmsg(pic), stderr);
-    abort();
-  }}
-
-#if DEBUG
-    puts("successfully loaded stdlib");
-#endif
-
-}}
-"""
-
-def gen_piclib_load_c(outfn):
-    with open(outfn, 'a') as f:
-        f.write(piclib_load_head)
-    loads = ""
-    for infn,vname in piclibs.items():
-        escape_scm(infn, outfn, vname)
-        loads += "pic_load_cstr(pic, {});\n    ".format(vname)
-    with open(outfn, 'a') as f:
-        f.write('\n\n')
-        f.write(piclib_load_tail.format(loads))
-
-gen_piclib_load_c(outfn)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 31ebeadc..e6da8d5b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -7,12 +7,11 @@ set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${PROJECT_SOURCE
 set(XFILE_SOURCES extlib/xfile/xfile.c)
 
 # piclib
-set(Python_ADDITIONAL_VERSIONS 2.7)
-find_package(PYTHON REQUIRED)
+find_package(Perl REQUIRED)
 set(PICLIB_SOURCES ${PROJECT_SOURCE_DIR}/src/load_piclib.c)
 add_custom_command(
   OUTPUT ${PICLIB_SOURCES}
-  COMMAND ${PYTHON_EXECUTABLE} etc/libemb.py
+  COMMAND ${PERL_EXECUTABLE} etc/libemb.pl > ${PROJECT_SOURCE_DIR}/src/load_piclib.c
   WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
   )