From 7f2ff4ffce8da68669855b16f5e2ecd9954aa33d Mon Sep 17 00:00:00 2001
From: Joerg Bornemann <joerg.bornemann@qt.io>
Date: Fri, 19 Jun 2020 14:45:35 +0200
Subject: CMake: Do not file(GENERATE) illegal genexes in .pri file generation

We must filter out expressions of the form $<TARGET_PROPERTY:name>, because
1. They cannot be used in file(GENERATE) content.
2. They refer to the consuming target we have no access to here.

The CMake error
  Error evaluating generator expression:

    $<TARGET_PROPERTY:QT_PLUGIN_CLASS_NAME>
was triggered when building the UiPlugin module of qttools.

Change-Id: Idf639be50120b94d68a70965604e6f1ef72edc9b
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
---
 cmake/QtBuild.cmake | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cmake/QtBuild.cmake b/cmake/QtBuild.cmake
index d5e00e4c94..ff6e72eff2 100644
--- a/cmake/QtBuild.cmake
+++ b/cmake/QtBuild.cmake
@@ -835,6 +835,11 @@ function(qt_generate_module_pri_file target)
         # will compute the transitive list of all defines for a module (so Gui would get Core
         #defines too). Instead query just the public defines on the target.
         get_target_property(target_defines "${target}" INTERFACE_COMPILE_DEFINITIONS)
+
+        # We must filter out expressions of the form $<TARGET_PROPERTY:name>, because
+        # 1. They cannot be used in file(GENERATE) content.
+        # 2. They refer to the consuming target we have no access to here.
+        list(FILTER target_defines EXCLUDE REGEX "\\$<TARGET_PROPERTY:[^,>]+>")
         list(JOIN target_defines " " joined_target_defines)
 
         file(GENERATE
-- 
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