device: Add -device and -device-option to configure

For some reference platforms and SDKs we will need to pass in
extra paths. Currently users have to modify the mkspec to adjust
paths or set environment variables that will be picked up.

This change introduces the -device <name> and -device-option
<key=value> option. The key value pairs will be written to a
qdevice.pri and can be used by the qmake.conf of the device spec.

The reason to not save the key value pairs in qconfig.pri is
becase of the fact that the device spec loads the qdevice.pri
earlier than the qconfig.pri. qdevice.pri allows the mkspec
to set the compiler flags and qconfig.pri allows configure to
add to those compiler flags.

Done-with: Holger Freyther

Change-Id: I931a197b8be72397e1eedfee09502eefc01c9d4f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>
Reviewed-by: Johannes Zellner <johannes.zellner@nokia.com>
Reviewed-by: Donald Carr <donald.carr@nokia.com>

5 files changed, 76 insertions, 5 deletions

diff --git a/.gitignore b/.gitignore
index f4013fd98a..7c98265f57 100644
--- a/.gitignore
+++ b/.gitignore
@@ -97,6 +97,7 @@ configure.cache
 config.status
 mkspecs/default
 mkspecs/qconfig.pri
+mkspecs/qdevice.pri
 moc_*.cpp
 qmake/qmake.exe
 qmake/Makefile.bak
diff --git a/config.tests/unix/compile.test b/config.tests/unix/compile.test
index f4a7f29b1a..f82fbf9024 100755
--- a/config.tests/unix/compile.test
+++ b/config.tests/unix/compile.test
@@ -68,7 +68,7 @@ test -r Makefile && $MAKE distclean >/dev/null 2>&1
 # Make sure output from possible previous tests is gone
 rm -f "$EXE" "${EXE}.exe"
 
-"$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "CONFIG+=$QMAKE_CONFIG" "CONFIG-=debug_and_release" "LIBS*=$LFLAGS" "LIBS+=$MAC_ARCH_LFLAGS" "INCLUDEPATH*=$INCLUDEPATH" "QMAKE_CXXFLAGS*=$CXXFLAGS" "QMAKE_CXXFLAGS+=$MAC_ARCH_CXXFLAGS" "QT_BUILD_TREE=$OUTDIR" "$SRCDIR/$TEST/$EXE.pro" -o "$OUTDIR/$TEST/Makefile"
+OUTDIR=$OUTDIR "$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "CONFIG+=$QMAKE_CONFIG" "CONFIG-=debug_and_release" "LIBS*=$LFLAGS" "LIBS+=$MAC_ARCH_LFLAGS" "INCLUDEPATH*=$INCLUDEPATH" "QMAKE_CXXFLAGS*=$CXXFLAGS" "QMAKE_CXXFLAGS+=$MAC_ARCH_CXXFLAGS" "QT_BUILD_TREE=$OUTDIR" "$SRCDIR/$TEST/$EXE.pro" -o "$OUTDIR/$TEST/Makefile"
 
 if [ "$VERBOSE" = "yes" ]; then
     $MAKE
diff --git a/configure b/configure
index 32caa653a9..fbd6b35b6d 100755
--- a/configure
+++ b/configure
@@ -71,8 +71,10 @@ QTCONFIG_CONFIG=
 QT_CONFIG=
 SUPPORTED=
 QMAKE_VARS_FILE=.qmake.vars
+DEVICE_VARS_FILE=.device.vars
 
 :> "$QMAKE_VARS_FILE"
+:> "$DEVICE_VARS_FILE"
 
 #-------------------------------------------------------------------------------
 # utility functions
@@ -224,6 +226,23 @@ linkerSupportsFlag()
 }
 
 #-------------------------------------------------------------------------------
+# device options
+#-------------------------------------------------------------------------------
+DeviceVar()
+{
+    case "$1" in
+        set)
+            eq="="
+            ;;
+        *)
+            echo >&2 "BUG: wrong command to QMakeVar: $1"
+            ;;
+    esac
+
+    echo "$2" "$eq" "$3" >> "$DEVICE_VARS_FILE"
+}
+
+#-------------------------------------------------------------------------------
 # operating system detection
 #-------------------------------------------------------------------------------
 
@@ -910,7 +929,7 @@ while [ "$#" -gt 0 ]; do
         shift
         VAL=$1
         ;;
-    -prefix|-docdir|-headerdir|-plugindir|-importdir|-datadir|-libdir|-bindir|-translationdir|-sysconfdir|-examplesdir|-testsdir|-depths|-make|-nomake|-platform|-xplatform|-sdk|-arch|-host-arch|-mysql_config|-sysroot|-hostdatadir|-hostbindir)
+    -prefix|-docdir|-headerdir|-plugindir|-importdir|-datadir|-libdir|-bindir|-translationdir|-sysconfdir|-examplesdir|-testsdir|-depths|-make|-nomake|-platform|-xplatform|-device|-device-option|-sdk|-arch|-host-arch|-mysql_config|-sysroot|-hostdatadir|-hostbindir)
         VAR=`echo $1 | sed "s,^-\(.*\),\1,"`
         shift
         VAL="$1"
@@ -1306,6 +1325,14 @@ while [ "$#" -gt 0 ]; do
         XPLATFORM="$VAL"
         case `basename "$XPLATFORM"` in win32-g++*) XPLATFORM_MINGW=yes;; esac
         ;;
+    device)
+        XPLATFORM="devices/$VAL"
+        ;;
+    device-option)
+        DEV_VAR=`echo $VAL | sed "s,^\(.*\)=.*,\1,"`
+        DEV_VAL=`echo $VAL | sed "s,^.*=\(.*\),\1,"`
+        DeviceVar set $DEV_VAR $DEV_VAL
+        ;;
     debug-and-release)
         if [ "$VAL" = "yes" ] || [ "$VAL" = "no" ]; then
             CFG_DEBUG_RELEASE="$VAL"
@@ -2457,6 +2484,15 @@ if [ "$CFG_RTOS_ENABLED" = "no" ]; then
 fi
 
 #-------------------------------------------------------------------------------
+# write out device config before we run the test.
+#-------------------------------------------------------------------------------
+if cmp -s "$DEVICE_VARS_FILE" "$outpath/mkspecs/qdevice.pri"; then
+    rm -f "$DEVICE_VARS_FILE"
+else
+    mv -f $DEVICE_VARS_FILE "$outpath/mkspecs/qdevice.pri"
+fi
+
+#-------------------------------------------------------------------------------
 # tests that don't need qmake (must be run before displaying help)
 #-------------------------------------------------------------------------------
 
@@ -2929,6 +2965,7 @@ Usage:  $relconf [-h] [-prefix <dir>] [-prefix-install] [-bindir <dir>] [-libdir
         [-no-openssl] [-openssl] [-openssl-linked]
         [-no-gtkstyle] [-gtkstyle]
         [-qt-pcre] [-system-pcre]
+        [-device <name>] [-device-option <key=value>]
         [additional platform specific options (see below)]
 
 
@@ -3192,6 +3229,10 @@ Additional options:
 
     -force-asserts ........ Force Q_ASSERT to be enabled even in release builds.
 
+    -device <name> ............... Cross-compile for device <name> (experimental)
+    -device-option <key=value> ... Add device specific options for the device mkspec
+                                   (experimental)
+
 EOF
 
 if [ "$CFG_SEPARATE_DEBUG_INFO" = "auto" ]; then
@@ -3925,12 +3966,12 @@ fi # Build qmake
 #-------------------------------------------------------------------------------
 
 # Use config.tests/arch/arch.pro to has the compiler tell us what the target architecture is
-CFG_ARCH=`"$outpath/bin/qmake" -spec "$XQMAKESPEC" -o /dev/null "$relpath/config.tests/arch/arch.pro" 2>&1 | sed -n -e 's,^Project MESSAGE:.*Architecture: \([a-zA-Z0-9_]*\).*,\1,p'`
+CFG_ARCH=`OUTDIR="$outpath" "$outpath/bin/qmake" -spec "$XQMAKESPEC" -o /dev/null "$relpath/config.tests/arch/arch.pro" 2>&1 | sed -n -e 's,^Project MESSAGE:.*Architecture: \([a-zA-Z0-9_]*\).*,\1,p'`
 
 [ -z "$CFG_ARCH" ] && CFG_ARCH="unknown"
 if [ "$QMAKESPEC" != "$XQMAKESPEC" ]; then
     # Do the same test again, using the host compiler
-    CFG_HOST_ARCH=`"$outpath/bin/qmake" -spec "$QMAKESPEC" -o /dev/null "$relpath/config.tests/arch/arch.pro" 2>&1 | sed -n -e 's,^Project MESSAGE:.*Architecture: \([a-zA-Z0-9_]*\).*,\1,p'`
+    CFG_HOST_ARCH=`OUTDIR="$outpath" "$outpath/bin/qmake" -spec "$QMAKESPEC" -o /dev/null "$relpath/config.tests/arch/arch.pro" 2>&1 | sed -n -e 's,^Project MESSAGE:.*Architecture: \([a-zA-Z0-9_]*\).*,\1,p'`
     [ -z "$CFG_HOST_ARCH" ] && CFG_HOST_ARCH="unknown"
 else
     # not cross compiling, host == target
diff --git a/mkspecs/features/device_config.prf b/mkspecs/features/device_config.prf
new file mode 100644
index 0000000000..56059e13cf
--- /dev/null
+++ b/mkspecs/features/device_config.prf
@@ -0,0 +1,27 @@
+# Load generated qdevice.pri
+exists($$_QMAKE_CACHE_) {
+    # set in default_pre, so it's the first place to check for qdevice.pri
+    DIR = $$fromfile($$_QMAKE_CACHE_, QT_BUILD_TREE)
+    !isEmpty(DIR):DEVICE_PRI = $$DIR/mkspecs/qdevice.pri
+}
+
+isEmpty(DEVICE_PRI) {
+    # OUTDIR environ is set by configure (arch detection) and compile.test
+    DIR = $$(OUTDIR)
+    !isEmpty(DIR):DEVICE_PRI = $$DIR/mkspecs/qdevice.pri
+}
+
+isEmpty(DEVICE_PRI) {
+    DIR = $$[QT_HOST_DATA]
+    !isEmpty(DIR):DEVICE_PRI = $$DIR/mkspecs/qdevice.pri
+}
+
+isEmpty(DEVICE_PRI) {
+    error(Could not locate qdevice.pri)
+}
+
+exists($$DEVICE_PRI):include($$DEVICE_PRI)
+
+unset(DEVICE_PRI)
+unset(DIR)
+
diff --git a/qtbase.pro b/qtbase.pro
index 7648a63826..ec3b0b2e9f 100644
--- a/qtbase.pro
+++ b/qtbase.pro
@@ -72,6 +72,7 @@ unix {
 			$(DEL_FILE) src/corelib/global/qconfig.h; \
 			$(DEL_FILE) src/corelib/global/qconfig.cpp; \
 			$(DEL_FILE) mkspecs/qconfig.pri; \
+			$(DEL_FILE) mkspecs/qdevice.pri; \
 			$(DEL_FILE) mkspecs/qmodule.pri; \
 			$(DEL_FILE) .qmake.cache; \
  			(cd qmake && $(MAKE) distclean);
@@ -80,6 +81,7 @@ win32 {
   confclean.commands += -$(DEL_FILE) src\\corelib\\global\\qconfig.h $$escape_expand(\\n\\t) \
 			-$(DEL_FILE) src\\corelib\\global\\qconfig.cpp $$escape_expand(\\n\\t) \
 			-$(DEL_FILE) mkspecs\\qconfig.pri $$escape_expand(\\n\\t) \
+			-$(DEL_FILE) mkspecs\\qdevice.pri $$escape_expand(\\n\\t) \
 			-$(DEL_FILE) mkspecs\\qmodule.pri $$escape_expand(\\n\\t) \
 			-$(DEL_FILE) .qmake.cache $$escape_expand(\\n\\t) \
 			(cd qmake && $(MAKE) distclean)
@@ -115,7 +117,7 @@ INSTALLS += configtests
 
 #mkspecs
 mkspecs.path = $$[QT_HOST_DATA]/mkspecs
-mkspecs.files = $$OUT_PWD/mkspecs/qconfig.pri $$OUT_PWD/mkspecs/qmodule.pri $$files($$PWD/mkspecs/*)
+mkspecs.files = $$OUT_PWD/mkspecs/qconfig.pri $$OUT_PWD/mkspecs/qmodule.pri $$OUT_PWD/mkspecs/qdevice.pri $$files($$PWD/mkspecs/*)
 mkspecs.files -= $$PWD/mkspecs/modules
 unix { 
    DEFAULT_QMAKESPEC = $$QMAKESPEC