From 12e4b63d2861945c4860fbf7f9751199a1a1bd2e Mon Sep 17 00:00:00 2001
From: Cristian Adam <cristian.adam@qt.io>
Date: Tue, 18 Aug 2020 19:07:47 +0200
Subject: [PATCH] CMake Build: Fix libdrm detection and compilation on QNX

On QNX 7.1 x86drm.h is located under <...>/usr/include/libdrm, unlike
linux where it's present under /usr/include.

find_path would not find it on QNX, and instead get /usr/include from
host, which resulted in a failure to compile.

Task-number: QTBUG-83202
Change-Id: I03d6c2d4dfbe91bb70df0a322e84890bd7c8548a
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
---
 cmake/3rdparty/kwin/FindLibdrm.cmake             | 16 +++++++++-------
 .../eglfs_kms_egldevice/CMakeLists.txt           |  7 +++++++
 .../eglfs_kms_support/CMakeLists.txt             |  7 +++++++
 3 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/cmake/3rdparty/kwin/FindLibdrm.cmake b/cmake/3rdparty/kwin/FindLibdrm.cmake
index 48598e061b8..a94e7fbcb60 100644
--- a/cmake/3rdparty/kwin/FindLibdrm.cmake
+++ b/cmake/3rdparty/kwin/FindLibdrm.cmake
@@ -78,6 +78,8 @@ if(NOT WIN32)
             xf86drm.h
         HINTS
             ${PKG_Libdrm_INCLUDE_DIRS}
+        PATH_SUFFIXES
+            libdrm
     )
     find_library(Libdrm_LIBRARY
         NAMES
@@ -103,14 +105,14 @@ if(NOT WIN32)
             IMPORTED_LOCATION "${Libdrm_LIBRARY}"
             INTERFACE_COMPILE_OPTIONS "${Libdrm_DEFINITIONS}"
             INTERFACE_INCLUDE_DIRECTORIES "${Libdrm_INCLUDE_DIR}"
-            INTERFACE_INCLUDE_DIRECTORIES "${Libdrm_INCLUDE_DIR}/libdrm"
         )
-        if(EXISTS "${Libdrm_INCLUDE_DIR}/drm")
-            set_property(TARGET Libdrm::Libdrm APPEND PROPERTY
-                INTERFACE_INCLUDE_DIRECTORIES "${Libdrm_INCLUDE_DIR}/drm"
-            )
-        endif()
-
+        foreach(suffix libdrm drm)
+            if(EXISTS "${Libdrm_INCLUDE_DIR}/${suffix}")
+                set_property(TARGET Libdrm::Libdrm APPEND PROPERTY
+                      INTERFACE_INCLUDE_DIRECTORIES "${Libdrm_INCLUDE_DIR}/${suffix}"
+                )
+            endif()
+        endforeach()
     endif()
 
     mark_as_advanced(Libdrm_LIBRARY Libdrm_INCLUDE_DIR)
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/CMakeLists.txt b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/CMakeLists.txt
index 6f1d5f67511..61ae1b932ab 100644
--- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/CMakeLists.txt
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/CMakeLists.txt
@@ -30,3 +30,10 @@ qt_internal_add_plugin(QEglFSKmsEglDeviceIntegrationPlugin
 
 #### Keys ignored in scope 1:.:.:eglfs_kms_egldevice.pro:<TRUE>:
 # OTHER_FILES = "$$PWD/eglfs_kms_egldevice.json"
+
+# begin special case
+qt_extend_target(QEglFSKmsEglDeviceIntegrationPlugin
+      CONDITION QNX
+      COMPILE_OPTIONS -fpermissive
+)
+# end special case
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/CMakeLists.txt b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/CMakeLists.txt
index ec11b355af2..0090dbb1eed 100644
--- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/CMakeLists.txt
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/CMakeLists.txt
@@ -26,3 +26,10 @@ qt_add_module(EglFsKmsSupport
         Qt::GuiPrivate
         Qt::KmsSupportPrivate
 )
+
+# begin special case
+qt_extend_target(EglFsKmsSupport
+      CONDITION QNX
+      COMPILE_OPTIONS -fpermissive
+)
+# end special case