[Buildroot] [PATCH v3 03/14] package/qt6/qt6base: add blind option to enable GUI support on host

[Roy Kollen Svendsen <roykollensvendsen@gmail.com>]

From: Roy Kollen Svendsen <roy.kollen.svendsen@akersolutions.com>

The Qt6::Gui module is needed when building the 'Qt Shader Baker'
(qsb) host tool.

Qsb is needed for converting the Qt6 Vulkan GLSL source code to
platform specific shader languages which is then later copied to
target.

For more details take a look at:

https://doc.qt.io/qt-6/qtshadertools-overview.html

and

https://doc.qt.io/qt-6/qshaderbaker.html
Signed-off-by: Roy Kollen Svendsen <roykollensvendsen@gmail.com>
---
Changes v2 -> v3:
  - Add explanation for why this option is necessary. (suggested by Thomas)
  - Move blind host option into Config.in.host (suggested by maintainers)
  - Move this change to separate patch. (suggested by Yann)

 package/Config.in.host             | 1 +
 package/qt6/Config.in.host         | 5 +++++
 package/qt6/qt6base/Config.in.host | 4 ++++
 package/qt6/qt6base/qt6base.mk     | 7 ++++++-
 4 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 package/qt6/Config.in.host
 create mode 100644 package/qt6/qt6base/Config.in.host

diff --git a/package/Config.in.host b/package/Config.in.host
index 986b2854d0..cbf54f5752 100644
--- a/package/Config.in.host
+++ b/package/Config.in.host
@@ -95,6 +95,7 @@ menu "Host utilities"
 	source "package/python3/Config.in.host"
 	source "package/qemu/Config.in.host"
 	source "package/qoriq-rcw/Config.in.host"
+	source "package/qt6/Config.in.host"
 	source "package/raspberrypi-usbboot/Config.in.host"
 	source "package/rauc/Config.in.host"
 	source "package/riscv-isa-sim/Config.in.host"
diff --git a/package/qt6/Config.in.host b/package/qt6/Config.in.host
new file mode 100644
index 0000000000..dfe7865c57
--- /dev/null
+++ b/package/qt6/Config.in.host
@@ -0,0 +1,5 @@
+if BR2_PACKAGE_QT6
+
+source "package/qt6/qt6base/Config.in.host"
+
+endif
diff --git a/package/qt6/qt6base/Config.in.host b/package/qt6/qt6base/Config.in.host
new file mode 100644
index 0000000000..326c06278e
--- /dev/null
+++ b/package/qt6/qt6base/Config.in.host
@@ -0,0 +1,4 @@
+# Select this if you need host qt6 tools that require the Qt::Gui module (e.g.
+# Qt Shader Baker(qsb)).
+config BR2_PACKAGE_HOST_QT6BASE_GUI
+	bool
diff --git a/package/qt6/qt6base/qt6base.mk b/package/qt6/qt6base/qt6base.mk
index 6857725ef5..47f47b6f8c 100644
--- a/package/qt6/qt6base/qt6base.mk
+++ b/package/qt6/qt6base/qt6base.mk
@@ -84,7 +84,6 @@ HOST_QT6BASE_DEPENDENCIES = \
 	host-pcre2 \
 	host-zlib
 HOST_QT6BASE_CONF_OPTS = \
-	-DFEATURE_gui=OFF \
 	-DFEATURE_concurrent=OFF \
 	-DFEATURE_xml=ON \
 	-DFEATURE_sql=OFF \
@@ -98,6 +97,12 @@ HOST_QT6BASE_CONF_OPTS = \
 	-DFEATURE_system_pcre2=ON \
 	-DFEATURE_system_zlib=ON
 
+ifeq ($(BR2_PACKAGE_HOST_QT6BASE_GUI),y)
+HOST_QT6BASE_CONF_OPTS += -DFEATURE_gui=ON
+else
+HOST_QT6BASE_CONF_OPTS += -DFEATURE_gui=OFF
+endif
+
 # Conditional blocks below are ordered by alphabetic ordering of the
 # BR2_PACKAGE_* option.
 
-- 
2.45.0

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