diff --git a/srcpkgs/qt5/patches/gcc7-avoid_wchar_t.patch b/srcpkgs/qt5/patches/gcc7-avoid_wchar_t.patch
new file mode 100644
index 00000000000..f7793db6e37
--- /dev/null
+++ b/srcpkgs/qt5/patches/gcc7-avoid_wchar_t.patch
@@ -0,0 +1,11 @@
+--- qtwebengine/src/3rdparty/chromium/third_party/pdfium/fpdfsdk/javascript/global.cpp	2017-05-20 02:18:35.281893421 +0200
++++ qtwebengine/src/3rdparty/chromium/third_party/pdfium/fpdfsdk/javascript/global.cpp	2017-05-20 02:23:36.260127027 +0200
+@@ -24,7 +24,7 @@
+ struct CHash;
+ 
+ // Only needed to hash single-character strings.
+-template <wchar_t N>
++template <unsigned N>
+ struct CHash<N> {
+   static const unsigned value = N;
+ };
diff --git a/srcpkgs/qt5/patches/gcc7-linked_hash_set.patch b/srcpkgs/qt5/patches/gcc7-linked_hash_set.patch
new file mode 100644
index 00000000000..d9c73d2f670
--- /dev/null
+++ b/srcpkgs/qt5/patches/gcc7-linked_hash_set.patch
@@ -0,0 +1,62 @@
+--- qtwebengine/src/3rdparty/chromium/third_party/WebKit/Source/wtf/LinkedHashSet.h	2017-01-03 10:28:53.000000000 +0100
++++ qtwebengine/src/3rdparty/chromium/third_party/WebKit/Source/wtf/LinkedHashSet.h	2017-05-20 02:43:53.182512520 +0200
+@@ -129,6 +129,29 @@
+     LinkedHashSetNodeBase& operator=(const LinkedHashSetNodeBase& other);
+ };
+ 
++inline void swapAnchor(LinkedHashSetNodeBase& a, LinkedHashSetNodeBase& b)
++{
++    ASSERT(a.m_prev && a.m_next && b.m_prev && b.m_next);
++    swap(a.m_prev, b.m_prev);
++    swap(a.m_next, b.m_next);
++    if (b.m_next == &a) {
++        ASSERT(b.m_prev == &a);
++        b.m_next = &b;
++        b.m_prev = &b;
++    } else {
++        b.m_next->m_prev = &b;
++        b.m_prev->m_next = &b;
++    }
++    if (a.m_next == &b) {
++        ASSERT(a.m_prev == &b);
++        a.m_next = &a;
++        a.m_prev = &a;
++    } else {
++        a.m_next->m_prev = &a;
++        a.m_prev->m_next = &a;
++    }
++}
++
+ template<typename ValueArg, typename Allocator>
+ class LinkedHashSetNode : public LinkedHashSetNodeBase {
+     DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
+@@ -720,29 +743,6 @@
+     remove(find(value));
+ }
+ 
+-inline void swapAnchor(LinkedHashSetNodeBase& a, LinkedHashSetNodeBase& b)
+-{
+-    ASSERT(a.m_prev && a.m_next && b.m_prev && b.m_next);
+-    swap(a.m_prev, b.m_prev);
+-    swap(a.m_next, b.m_next);
+-    if (b.m_next == &a) {
+-        ASSERT(b.m_prev == &a);
+-        b.m_next = &b;
+-        b.m_prev = &b;
+-    } else {
+-        b.m_next->m_prev = &b;
+-        b.m_prev->m_next = &b;
+-    }
+-    if (a.m_next == &b) {
+-        ASSERT(a.m_prev == &b);
+-        a.m_next = &a;
+-        a.m_prev = &a;
+-    } else {
+-        a.m_next->m_prev = &a;
+-        a.m_prev->m_next = &a;
+-    }
+-}
+-
+ inline void swap(LinkedHashSetNodeBase& a, LinkedHashSetNodeBase& b)
+ {
+     ASSERT(a.m_next != &a && b.m_next != &b);
diff --git a/srcpkgs/qt5/patches/gcc7-template-type.patch b/srcpkgs/qt5/patches/gcc7-template-type.patch
new file mode 100644
index 00000000000..bc7895b5b17
--- /dev/null
+++ b/srcpkgs/qt5/patches/gcc7-template-type.patch
@@ -0,0 +1,11 @@
+--- qtwebengine/src/3rdparty/chromium/v8/src/objects-body-descriptors.h	2017-01-03 10:28:53.000000000 +0100
++++ qtwebengine/src/3rdparty/chromium/v8/src/objects-body-descriptors.h	2017-05-20 02:00:14.447917361 +0200
+@@ -99,7 +99,7 @@
+ 
+   template <typename StaticVisitor>
+   static inline void IterateBody(HeapObject* obj, int object_size) {
+-    IterateBody(obj);
++    IterateBody<StaticVisitor>(obj);
+   }
+ };
+