From cd3ca9e53693cb1815ff144ba68b42225c07de9f Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@klayout.de>
Date: Sun, 6 Nov 2022 01:23:39 +0100
Subject: [PATCH] Do not use zstd compression for Qt6 as there is no built-in
 decompression

---
 src/klayout.pri       | 5 +++++
 src/tl/tl/tlStream.cc | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/klayout.pri b/src/klayout.pri
index f70c810ba..0cb25c0ab 100644
--- a/src/klayout.pri
+++ b/src/klayout.pri
@@ -130,6 +130,11 @@ equals(HAVE_CRONOLOGY, "1") {
   INCLUDEPATH += $$CRONOLOGY_INCLUDE
 }
 
+!lessThan(QT_MAJOR_VERSION, 6) {
+  # internal resource readers to not support zstd so far
+  QMAKE_RESOURCE_FLAGS += --compress-algo zlib
+}
+
 msvc {
 
   QMAKE_CXXFLAGS += \
diff --git a/src/tl/tl/tlStream.cc b/src/tl/tl/tlStream.cc
index 2813a9114..7a9c78df3 100644
--- a/src/tl/tl/tlStream.cc
+++ b/src/tl/tl/tlStream.cc
@@ -212,9 +212,9 @@ InputStream::InputStream (const std::string &abstract_path)
 
     QByteArray data;
 #if QT_VERSION >= 0x60000
-      if (res.compressionAlgorithm () == QResource::ZlibCompression) {
+    if (res.compressionAlgorithm () == QResource::ZlibCompression) {
 #else
-      if (res.isCompressed ()) {
+    if (res.isCompressed ()) {
 #endif
       data = qUncompress ((const unsigned char *)res.data (), (int)res.size ());
     } else {