diff --git a/buildfiles/conda_pthread4w/0001_change_install_dest.patch b/buildfiles/conda_pthread4w/0001_change_install_dest.patch
new file mode 100644
index 0000000..cb6e2d3
--- /dev/null
+++ b/buildfiles/conda_pthread4w/0001_change_install_dest.patch
@@ -0,0 +1,13 @@
+diff -ruN pthreads4w-code-07053a521b0a9deb6db2a649cde1f828f2eb1f4f/Makefile pthreads4w-code-new/Makefile
+--- pthreads4w-code-07053a521b0a9deb6db2a649cde1f828f2eb1f4f/Makefile	2018-08-08 05:47:40.000000000 -0500
++++ pthreads4w-code-new/Makefile	2019-04-26 14:14:15.719088066 -0500
+@@ -8,7 +8,8 @@
+ PTW32_VER	= 3$(EXTRAVERSION)
+ PTW32_VER_DEBUG= $(PTW32_VER)d
+ 
+-DESTROOT	= ..\PTHREADS-BUILT
++# DESTROOT	= ..\PTHREADS-BUILT
++DESTROOT = $(PREFIX)
+ 
+ DLLDEST	= $(DESTROOT)\bin
+ LIBDEST	= $(DESTROOT)\lib
diff --git a/buildfiles/conda_pthread4w/bld.bat b/buildfiles/conda_pthread4w/bld.bat
new file mode 100644
index 0000000..ed7f5c2
--- /dev/null
+++ b/buildfiles/conda_pthread4w/bld.bat
@@ -0,0 +1,7 @@
+nmake /E clean VC
+nmake /E clean VC-debug
+nmake /E clean VC-static
+nmake /E clean VC-static-debug
+nmake install
+
+
diff --git a/buildfiles/conda_pthread4w/meta.yaml b/buildfiles/conda_pthread4w/meta.yaml
new file mode 100644
index 0000000..6c812cf
--- /dev/null
+++ b/buildfiles/conda_pthread4w/meta.yaml
@@ -0,0 +1,49 @@
+# To upload this file after building...
+#
+# anaconda login
+# cd \programdata\miniconda3\conda-bld\win-64
+# anaconda upload -u dasdevelopers pthreads4w-3.0.0-hfa6e2cd_0.tar.bz2
+#
+# To use this package
+# conda install -c dasdevelopers pthreads4w
+
+
+
+{% set name = "pthreads4w" %}
+{% set version = "3.0.0" %}
+{% set sha256 = "b86741aa1c4600905ed3cb642269225f9ccee17c864e8b2448f730c3680c1966" %}
+
+
+package:
+   name: {{ name }} 
+   version: {{ version }} 
+   
+source:
+   fn:  pthreads4w-{{ version }}.tar.gz
+   url: http://das2.org/das2py/files/pthreads4w-{{ version }}.tar.gz
+   sha256: {{ sha256 }}
+   
+build:
+   # This is the zeroth build
+   number: 0
+   
+test:
+   commands:
+      - if not exist %LIBRARY_INC%\pthread.h exit 1
+      - if not exist %LIBRARY_BIN%\pthreadVC3.dll exit 1
+      - if not exist %LIBRARY_LIB%\pthreadVC3.lib exit 1
+      - if not exist %LIBRARY_BIN%\pthreadVC3d.dll exit 1
+      - if not exist %LIBRARY_LIB%\pthreadVC3d.lib exit 1
+      - if not exist %LIBRARY_LIB%\libpthreadVC3.lib exit 1
+      - if not exist %LIBRARY_LIB%\libpthreadVC3d.lib exit 1
+
+about:
+   home: https://sourceforge.net/projects/pthreads4w/
+   license: APACHE
+   license_file: LICENSE
+   summary: An implementation of the POSIX threads API for Windows
+   
+requirements:
+   build:
+      - {{ compiler('c') }}
+