diff --git a/libopenfpga/libpcf/CMakeLists.txt b/libopenfpga/libpcf/CMakeLists.txt
index 49314b259..5b1504de1 100644
--- a/libopenfpga/libpcf/CMakeLists.txt
+++ b/libopenfpga/libpcf/CMakeLists.txt
@@ -12,6 +12,8 @@ endif(CSV_CXX_STANDARD)
 option(BUILD_PYTHON "Build Python Binding" OFF)
 
 message("Building CSV library using C++${CMAKE_CXX_STANDARD}")
+set(THREADS_PREFER_PTHREAD_FLAG TRUE)
+find_package(Threads QUIET REQUIRED)
 
 # Defines CSV_HAS_CXX17 in compatibility.hpp
 if (CMAKE_VERSION VERSION_LESS "3.12.0")
diff --git a/libopenfpga/libpcf/src/base/io_pin_table.cpp b/libopenfpga/libpcf/src/base/io_pin_table.cpp
index 742e5cf32..94f47280d 100644
--- a/libopenfpga/libpcf/src/base/io_pin_table.cpp
+++ b/libopenfpga/libpcf/src/base/io_pin_table.cpp
@@ -22,7 +22,7 @@ IoPinTable::IoPinTable() {
 /************************************************************************
  * Public Accessors : aggregates
  ***********************************************************************/
-IoPinTable::io_pin_table_range IoPinTable::internal_pins() const {
+IoPinTable::io_pin_table_range IoPinTable::pins() const {
   return vtr::make_range(pin_ids_.begin(), pin_ids_.end());
 }
 
diff --git a/libopenfpga/libpcf/src/base/io_pin_table.h b/libopenfpga/libpcf/src/base/io_pin_table.h
index 879e3f259..4b863530c 100644
--- a/libopenfpga/libpcf/src/base/io_pin_table.h
+++ b/libopenfpga/libpcf/src/base/io_pin_table.h
@@ -70,7 +70,7 @@ class IoPinTable {
     /* Walk through the internal pins. We do not walk through external pins because they are not unique in the table. 
      * An external pin may be accessible by two internal pins
      */
-    io_pin_table_range internal_pins() const;
+    io_pin_table_range pins() const;
   public: /* Public Accessors: Basic data query */
     /* Get the basic information for a pin */
     openfpga::BasicPort internal_pin(const IoPinTableId& pin_id) const;
diff --git a/libopenfpga/libpcf/src/io/write_csv_io_pin_table.cpp b/libopenfpga/libpcf/src/io/write_csv_io_pin_table.cpp
index eaf307ba3..c2dbed1be 100644
--- a/libopenfpga/libpcf/src/io/write_csv_io_pin_table.cpp
+++ b/libopenfpga/libpcf/src/io/write_csv_io_pin_table.cpp
@@ -45,16 +45,16 @@ int write_csv_io_pin_table(const char* fname,
 
   /* Print head row */
   std::vector<std::string> head_row_str({"orientation", "port_name", "mapped_pin", "direction"});
-  writer << head_row_str << "\n";
+  writer << head_row_str;
 
   /* Print data */
   for (const IoPinTableId& pin_id : io_pin_table.pins()) {
     std::vector<std::string> data_row_str;
-    data_row_str.append(SIDE_STRING[io_pin_table.pin_side(pin_id)]);
-    data_row_str.append(generate_xml_port_name(io_pin_table.internal_pin(pin_id)));
-    data_row_str.append(generate_xml_port_name(io_pin_table.external_pin(pin_id)));
-    data_row_str.append(IO_DIRECTION_STRING[io_pin_table.pin_direction(pin_id)]);
-    writer << data_row_str << "\n";
+    data_row_str.push_back(SIDE_STRING[io_pin_table.pin_side(pin_id)]);
+    data_row_str.push_back(generate_xml_port_name(io_pin_table.internal_pin(pin_id)));
+    data_row_str.push_back(generate_xml_port_name(io_pin_table.external_pin(pin_id)));
+    data_row_str.push_back(IO_DIRECTION_STRING[io_pin_table.pin_direction(pin_id)]);
+    writer << data_row_str;
   }
 
   return 0;
diff --git a/libopenfpga/libpcf/test/test_csv_io_pin_table.cpp b/libopenfpga/libpcf/test/test_csv_io_pin_table.cpp
index bc45ffe34..ce6c31f67 100644
--- a/libopenfpga/libpcf/test/test_csv_io_pin_table.cpp
+++ b/libopenfpga/libpcf/test/test_csv_io_pin_table.cpp
@@ -16,7 +16,7 @@ int main(int argc, const char** argv) {
   VTR_ASSERT((2 == argc) || (3 == argc));
 
   /* Parse the fabric key from an XML file */
-  openfpga::IoPinTable io_pin_table = openfpga::read_csv_io_io_pin_table(argv[1]);
+  openfpga::IoPinTable io_pin_table = openfpga::read_csv_io_pin_table(argv[1]);
   VTR_LOG("Read the I/O pin table from a csv file: %s.\n",
           argv[1]);
 
@@ -24,7 +24,7 @@ int main(int argc, const char** argv) {
    * This is optional only used when there is a second argument
    */
   if (3 <= argc) { 
-    write_csv_io_pin_table(std::string(argv[2]), io_pin_table);
+    write_csv_io_pin_table(argv[2], io_pin_table);
     VTR_LOG("Echo the I/O pin table to a csv file: %s.\n",
             argv[2]);
   }