[Buildroot] [RFC PATCH v3 10/10] package/qt5base: provide "qt.conf" to make "qmake" relocatable

[Wolfgang Grandegger <wg@grandegger.com>]

The file "qt.conf" can be used to override the hard-coded paths that are
compiled into the Qt library. We need it to make "qmake" relocatable.

CC: Julien Corjon <corjon.j@ecagroup.com>
CC: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
---
 package/qt5/qt5base/qt.conf.in | 6 ++++++
 package/qt5/qt5base/qt5base.mk | 8 ++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 package/qt5/qt5base/qt.conf.in

diff --git a/package/qt5/qt5base/qt.conf.in b/package/qt5/qt5base/qt.conf.in
new file mode 100644
index 0000000..48e4b92
--- /dev/null
+++ b/package/qt5/qt5base/qt.conf.in
@@ -0,0 +1,6 @@
+[Paths]
+Prefix=@@HOST_DIR@@/usr
+Sysroot=@@STAGING_DIR@@
+Headers=/usr/include/qt5
+Plugins=/usr/lib/qt/plugins
+Examples=/usr/lib/qt/examples
diff --git a/package/qt5/qt5base/qt5base.mk b/package/qt5/qt5base/qt5base.mk
index 1020348..e42e395 100644
--- a/package/qt5/qt5base/qt5base.mk
+++ b/package/qt5/qt5base/qt5base.mk
@@ -253,9 +253,17 @@ define QT5BASE_BUILD_CMDS
 	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
 endef
 
+# The file "qt.conf" can be used to override the hard-coded paths that are
+# compiled into the Qt library. We need it to make "qmake" relocatable.
+define QT5BASE_INSTALL_QT_CONF
+	sed -e "s\\@@HOST_DIR@@\\$(HOST_DIR)\\" -e "s\\@@STAGING_DIR@@\\$(STAGING_DIR)\\" \
+	$(QT5BASE_PKGDIR)/qt.conf.in > $(HOST_DIR)/usr/bin/qt.conf
+endef
+
 define QT5BASE_INSTALL_STAGING_CMDS
 	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) install
 	$(QT5_LA_PRL_FILES_FIXUP)
+	$(QT5BASE_INSTALL_QT_CONF)
 endef
 
 define QT5BASE_INSTALL_TARGET_LIBS
-- 
1.9.1