diff --git a/mingw-w64-openshadinglanguage/0008-openimageio-api-changes.patch b/mingw-w64-openshadinglanguage/0008-openimageio-api-changes.patch
index 7705e11c1d..8a52b5df3d 100644
--- a/mingw-w64-openshadinglanguage/0008-openimageio-api-changes.patch
+++ b/mingw-w64-openshadinglanguage/0008-openimageio-api-changes.patch
@@ -1,6 +1,6 @@
 --- OpenShadingLanguage-Release-1.8.9/src/liboslcomp/oslcomp.cpp.orig	2017-05-31 08:14:33.000000000 +0300
 +++ OpenShadingLanguage-Release-1.8.9/src/liboslcomp/oslcomp.cpp	2017-06-19 11:08:15.725143800 +0300
-@@ -202,8 +202,8 @@
+@@ -159,8 +159,8 @@
                                    std::string &result)
  {
      // Read file contents into a string
@@ -11,7 +11,7 @@
      if (! instream.is_open()) {
          error (ustring(filename), 0, "Could not open \"%s\"\n", filename.c_str());
          return false;
-@@ -558,8 +558,8 @@
+@@ -590,8 +590,8 @@
              if (m_output_filename.size() == 0)
                  m_output_filename = default_output_filename ();
  
diff --git a/mingw-w64-openshadinglanguage/0011-fix-export-attributes.patch b/mingw-w64-openshadinglanguage/0011-fix-export-attributes.patch
new file mode 100644
index 0000000000..49d5998bb0
--- /dev/null
+++ b/mingw-w64-openshadinglanguage/0011-fix-export-attributes.patch
@@ -0,0 +1,11 @@
+--- OpenShadingLanguage-Release-1.10.6/src/include/OSL/export.h.orig	2019-07-31 13:36:25.724820700 +0300
++++ OpenShadingLanguage-Release-1.10.6/src/include/OSL/export.h	2019-07-31 13:36:33.547314400 +0300
+@@ -65,7 +65,7 @@
+ /// dependencies, and so what is exported for one may be imported for
+ /// another.
+ 
+-#if defined(_MSC_VER) || defined(__CYGWIN__)
++#if defined(_WIN32) || defined(__CYGWIN__)
+   #if defined(OSL_STATIC_BUILD)
+     #define OSL_DLL_IMPORT
+     #define OSL_DLL_EXPORT
diff --git a/mingw-w64-openshadinglanguage/0012-isatty-mingw.patch b/mingw-w64-openshadinglanguage/0012-isatty-mingw.patch
new file mode 100644
index 0000000000..3978bd1a6a
--- /dev/null
+++ b/mingw-w64-openshadinglanguage/0012-isatty-mingw.patch
@@ -0,0 +1,22 @@
+--- OpenShadingLanguage-Release-1.10.6/src/liboslcomp/osllex.l.orig	2019-07-31 13:40:13.522982700 +0300
++++ OpenShadingLanguage-Release-1.10.6/src/liboslcomp/osllex.l	2019-07-31 13:40:31.481640300 +0300
+@@ -112,7 +112,7 @@
+ #ifdef _WIN32
+ #define YY_NO_UNISTD_H
+ 
+-#ifdef _MSC_VER
++#ifdef _WIN32
+ #define strtoll _strtoi64
+ #include <io.h>
+ #define isatty _isatty
+--- OpenShadingLanguage-Release-1.10.6/src/liboslexec/osolex.l.orig	2019-07-31 13:40:13.522982700 +0300
++++ OpenShadingLanguage-Release-1.10.6/src/liboslexec/osolex.l	2019-07-31 13:40:31.481640300 +0300
+@@ -112,7 +112,7 @@
+ #define YY_NO_UNISTD_H
+ #endif
+ 
+-#ifdef _MSC_VER
++#ifdef _WIN32
+ #include <io.h>
+ #define isatty _isatty
+ #endif
\ No newline at end of file
diff --git a/mingw-w64-openshadinglanguage/PKGBUILD b/mingw-w64-openshadinglanguage/PKGBUILD
index f23c79b9aa..fa91fadd62 100644
--- a/mingw-w64-openshadinglanguage/PKGBUILD
+++ b/mingw-w64-openshadinglanguage/PKGBUILD
@@ -21,6 +21,7 @@ depends=("${MINGW_PACKAGE_PREFIX}-boost"
          "${MINGW_PACKAGE_PREFIX}-libtiff"
          "${MINGW_PACKAGE_PREFIX}-openexr"
          "${MINGW_PACKAGE_PREFIX}-openimageio"
+         "${MINGW_PACKAGE_PREFIX}-partio"
          "${MINGW_PACKAGE_PREFIX}-pugixml")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-gcc"
@@ -36,7 +37,9 @@ source=(${_realname}-${pkgver}.tar.gz::https://github.com/imageworks/OpenShading
         0007-Fix-bad-casts-with-intptr_t.patch
         0008-openimageio-api-changes.patch
         0009-find-pugixml.patch
-        0010-macros-undef-mingw.patch)
+        0010-macros-undef-mingw.patch
+        0011-fix-export-attributes.patch
+        0012-isatty-mingw.patch)
 sha256sums=('6ce825e9f224e7cae460a19d2b926700c9db1789e3c765933b426dd0f9562160'
             'e3f6ad09619d122ada129cbc77d7778751abfecef9ac7e0a60d9550c811df643'
             '70d4ce3c69ed072eee0d2bb84cecea5ff9ff35e258a24a7a78ec94e4b626e493'
@@ -44,9 +47,11 @@ sha256sums=('6ce825e9f224e7cae460a19d2b926700c9db1789e3c765933b426dd0f9562160'
             'bafdde92611252b061906453a58672245363c9ce2960b175ee27146347086f15'
             '541cc1eb0c506e253de2f26af37dc6e35de891a940906c6e33a2f4774a4a844e'
             'b6ac561e4f450324ff4d60f363de9f266dd4d01d43bc1ec0ee1190cfb7f35c2c'
-            '69abdeed520bd5ce354a7d0770847e54aa4704a24bc88c07fccc47b4500bf150'
+            '65c630a33fb77a64e52192813a2472dd5c7d1d38335f614369f27e475d733611'
             'b65fecac8d338f506abf168154ec97baa7523497419f7fdb0a53442ae652adb3'
-            'd6fe2f65d219b124f9155a7c362cffb085134acd0882786870d72b519994f4cc')
+            'd6fe2f65d219b124f9155a7c362cffb085134acd0882786870d72b519994f4cc'
+            '87d5cff0c9b948f9e319ed07309066777628525050838638dc5d2f6aef2d5531'
+            '7d9de868949b83d20b1807a8eb6d21402a4fc141c85cd1ca6e74a326b79be284')
 
 prepare() {
   cd ${srcdir}/OpenShadingLanguage-Release-${pkgver}
@@ -59,6 +64,8 @@ prepare() {
   patch -p1 -i ${srcdir}/0008-openimageio-api-changes.patch
   patch -p1 -i ${srcdir}/0009-find-pugixml.patch
   patch -p1 -i ${srcdir}/0010-macros-undef-mingw.patch
+  patch -p1 -i ${srcdir}/0011-fix-export-attributes.patch
+  patch -p1 -i ${srcdir}/0012-isatty-mingw.patch
 }
 
 build() {