Toolchain: add static device mkspec, suitable for Qt Creator

The linux-oe-g++ mkspec used by meta-qt5 depends on the user sourcing
the toolchain environment-setup script, which modifies the PATH and
sets a long range of environment variables. That is not a "best
practice" way of use Qt, and does not allow smooth integration of the
toolchain into Qt Creator.

Here, we instead create a static mkspec for the toolchain:
devices/linux-oe-generic-g++. The toolchain recipe will will the
qdevice.pri file with the required compiler flags etc. for the target.

Additionally, we introduce an extra .pri file for device-specific
settings, so they can be shared between the two mkspecs.

Change-Id: Ie5a019524ba6cdddffb71b0c7c28861ddba17fbd
Reviewed-by: Samuli Piippo <samuli.piippo@theqtcompany.com>

9 files changed, 86 insertions, 9 deletions

diff --git a/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk.bb b/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk.bb
index 1199da9..98ff5cc 100644
--- a/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk.bb
+++ b/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk.bb
@@ -25,7 +25,44 @@ PR = "r0"
 LICENSE = "QtEnterprise"
 LIC_FILES_CHKSUM = "file://${QT_LICENCE};md5=7bc9c54e450006250a60e96604c186c9"
 
-inherit populate_sdk populate_sdk_qt5
+inherit populate_sdk populate_sdk_qt5 qmake5_paths
 
 TOOLCHAIN_HOST_TASK += "nativesdk-packagegroup-b2qt-embedded-qt5-toolchain-host"
 TOOLCHAIN_TARGET_TASK += "packagegroup-b2qt-embedded-qt5-toolchain-target"
+
+SRC_URI = " \
+    file://qmake.conf \
+    file://qplatformdefs.h \
+    "
+
+SDK_MKSPEC_DIR = "${SDK_OUTPUT}${SDKTARGETSYSROOT}${libdir}/${QT_DIR_NAME}/mkspecs"
+SDK_MKSPEC = "devices/linux-oe-generic-g++"
+SDK_DEVICE_PRI = "${SDK_MKSPEC_DIR}/qdevice.pri"
+SDK_DYNAMIC_FLAGS = "-O. -pipe -g"
+
+create_sdk_files_append () {
+    # Install the toolchain user's generic device mkspec
+    install -d ${SDK_MKSPEC_DIR}/${SDK_MKSPEC}
+    install -m 0644 ${WORKDIR}/qmake.conf ${SDK_MKSPEC_DIR}/${SDK_MKSPEC}
+    install -m 0644 ${WORKDIR}/qplatformdefs.h ${SDK_MKSPEC_DIR}/${SDK_MKSPEC}
+
+    # Fill in the qdevice.pri file which will be used by the device mksspec
+    static_cflags="${TARGET_CFLAGS}"
+    static_cxxflags="${TARGET_CXXFLAGS}"
+    for i in ${SDK_DYNAMIC_FLAGS}; do
+        static_cflags=$(echo $static_cflags | sed -e "s/$i //")
+        static_cxxflags=$(echo $static_cxxflags | sed -e "s/$i //")
+    done
+    echo "MACHINE = ${MACHINE}" > ${SDK_DEVICE_PRI}
+    echo "CROSS_COMPILE = ${SDKPATHNATIVE}${bindir_nativesdk}/${TARGET_SYS}/${TARGET_PREFIX}" >> ${SDK_DEVICE_PRI}
+    echo "QMAKE_CFLAGS *= ${TARGET_CC_ARCH} --sysroot=${SDKTARGETSYSROOT} ${static_cflags}" >> ${SDK_DEVICE_PRI}
+    echo "QMAKE_CXXFLAGS *= ${TARGET_CC_ARCH} --sysroot=${SDKTARGETSYSROOT} ${static_cxxflags}" >> ${SDK_DEVICE_PRI}
+    echo "QMAKE_LFLAGS *= ${TARGET_CC_ARCH} --sysroot=${SDKTARGETSYSROOT} ${TARGET_LDFLAGS}" >> ${SDK_DEVICE_PRI}
+
+    # Setup qt.conf to point at the device mkspec by default
+    qtconf=${SDK_OUTPUT}/${SDKPATHNATIVE}${OE_QMAKE_PATH_HOST_BINS}/qt.conf
+    echo 'HostSpec = linux-g++' >> $qtconf
+    echo 'TargetSpec = devices/linux-oe-generic-g++' >> $qtconf
+}
+
+SDK_POST_INSTALL_COMMAND += "$SUDO_EXEC sed -i -e "s:$DEFAULT_INSTALL_DIR:$target_sdk_dir:g" $native_sysroot/mkspecs/qdevice.pri ;"
diff --git a/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk/qmake.conf b/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk/qmake.conf
new file mode 100644
index 0000000..dadea00
--- /dev/null
+++ b/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk/qmake.conf
@@ -0,0 +1,14 @@
+#
+# qmake configuration for using yocto-built b2qt toolchain
+#
+
+include(../common/linux_device_pre.conf)
+
+QMAKE_PLATFORM         += boot2qt
+
+# Load device-specific qmake.conf part, if any
+exists(../../oe-device-extra.pri):include(../../oe-device-extra.pri)
+
+include(../common/linux_device_post.conf)
+
+load(qt_config)
diff --git a/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk/qplatformdefs.h b/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk/qplatformdefs.h
new file mode 100644
index 0000000..e10ebcf
--- /dev/null
+++ b/recipes-qt/meta/meta-toolchain-b2qt-embedded-qt5-sdk/qplatformdefs.h
@@ -0,0 +1,2 @@
+
+#include "../../linux-g++/qplatformdefs.h"
diff --git a/recipes-qt/qt5/qtbase/emulator/oe-device-extra.pri b/recipes-qt/qt5/qtbase/emulator/oe-device-extra.pri
new file mode 100644
index 0000000..3c0971c
--- /dev/null
+++ b/recipes-qt/qt5/qtbase/emulator/oe-device-extra.pri
@@ -0,0 +1,2 @@
+QMAKE_LIBS_EGL         = -lQtGlesStreamClient
+QMAKE_LIBS_OPENGL_ES2  = -lQtGlesStreamClient
diff --git a/recipes-qt/qt5/qtbase/mx6/oe-device-extra.pri b/recipes-qt/qt5/qtbase/mx6/oe-device-extra.pri
new file mode 100644
index 0000000..cf89ae6
--- /dev/null
+++ b/recipes-qt/qt5/qtbase/mx6/oe-device-extra.pri
@@ -0,0 +1,8 @@
+IMX6_CFLAGS             = -DLINUX=1 -DEGL_API_FB=1
+QMAKE_LIBS_EGL         += -lEGL
+QMAKE_LIBS_OPENGL_ES2  += -lGLESv2 -lEGL -lGAL
+QMAKE_LIBS_OPENVG      += -lOpenVG -lEGL -lGAL
+QMAKE_CFLAGS           += $$IMX6_CFLAGS
+QMAKE_CXXFLAGS         += $$IMX6_CFLAGS
+
+EGLFS_PLATFORM_HOOKS_SOURCES = $$PWD/devices/linux-imx6-g++/qeglfshooks_imx6.cpp
diff --git a/recipes-qt/qt5/qtbase/oe-device-extra.pri b/recipes-qt/qt5/qtbase/oe-device-extra.pri
new file mode 100644
index 0000000..6c4bdd9
--- /dev/null
+++ b/recipes-qt/qt5/qtbase/oe-device-extra.pri
@@ -0,0 +1 @@
+# This file contains device-specific qmake.conf settings
diff --git a/recipes-qt/qt5/qtbase/rpi/oe-device-extra.pri b/recipes-qt/qt5/qtbase/rpi/oe-device-extra.pri
new file mode 100644
index 0000000..bddd245
--- /dev/null
+++ b/recipes-qt/qt5/qtbase/rpi/oe-device-extra.pri
@@ -0,0 +1,10 @@
+QMAKE_INCDIR_EGL        = $$[QT_SYSROOT]/usr/include/interface/vcos/pthreads \
+                          $$[QT_SYSROOT]/usr/include/interface/vmcs_host/linux
+QMAKE_INCDIR_OPENGL_ES2 = $${QMAKE_INCDIR_EGL}
+
+QMAKE_LIBS_EGL          = -lEGL -lGLESv2
+QMAKE_CFLAGS           += $$RPI_CFLAGS
+QMAKE_CXXFLAGS         += $$RPI_CFLAGS
+
+EGLFS_PLATFORM_HOOKS_SOURCES = $$PWD/devices/linux-rasp-pi-g++/qeglfshooks_pi.cpp
+EGLFS_PLATFORM_HOOKS_LIBS    = -lbcm_host
diff --git a/recipes-qt/qt5/qtbase/ti33x/oe-device-extra.pri b/recipes-qt/qt5/qtbase/ti33x/oe-device-extra.pri
new file mode 100644
index 0000000..6a5edd9
--- /dev/null
+++ b/recipes-qt/qt5/qtbase/ti33x/oe-device-extra.pri
@@ -0,0 +1,3 @@
+QMAKE_LIBS_EGL          = -lEGL -lIMGegl -lsrv_um
+QMAKE_LIBS_OPENGL_ES2   = -lGLESv2 $${QMAKE_LIBS_EGL}
+QMAKE_LIBS_OPENVG       = -lOpenVG $${QMAKE_LIBS_EGL}
diff --git a/recipes-qt/qt5/qtbase_%.bbappend b/recipes-qt/qt5/qtbase_%.bbappend
index 27b476b..340d308 100644
--- a/recipes-qt/qt5/qtbase_%.bbappend
+++ b/recipes-qt/qt5/qtbase_%.bbappend
@@ -34,20 +34,20 @@ PACKAGECONFIG += " \
     tslib \
     "
 
+FILESEXTRAPATHS_append := "${THISDIR}/${PN}:"
+
+SRC_URI += " \
+    file://oe-device-extra.pri \
+    "
+
 do_configure_prepend() {
+        install -m 0644 ${WORKDIR}/oe-device-extra.pri ${S}/mkspecs
         sed -i 's!load(qt_config)!!' ${S}/mkspecs/linux-oe-g++/qmake.conf
         cat >> ${S}/mkspecs/linux-oe-g++/qmake.conf <<EOF
 QMAKE_PLATFORM         += boot2qt
 QT_QPA_DEFAULT_PLATFORM = eglfs
-load(qt_config)
-EOF
-}
 
-do_configure_prepend_emulator() {
-        sed -i 's!load(qt_config)!!' ${S}/mkspecs/linux-oe-g++/qmake.conf
-        cat >> ${S}/mkspecs/linux-oe-g++/qmake.conf <<EOF
-QMAKE_LIBS_EGL         = -lQtGlesStreamClient
-QMAKE_LIBS_OPENGL_ES2  = -lQtGlesStreamClient
+exists(../oe-device-extra.pri):include(../oe-device-extra.pri)
 
 load(qt_config)
 EOF