[Qemu-devel] [PATCH] build: Fix linking failure for qemu-ga

[riegamaths]

From: Dunrong Huang <address@hidden>

This patch will fix the following linking failed:

  LINK  qemu-ga
gcc: error: qga/../qapi-generated/qga-qapi-types.o: No such file or directory
gcc: error: qga/../qapi-generated/qga-qapi-visit.o: No such file or directory
gcc: error: qga/../qapi-generated/qga-qmp-marshal.o: No such file or directory
make: *** [qemu-ga] Error 1

Commit cdc976b040f2760103ce2fb49f4d504093a7163f changes the
dependencies of qemu-ga to depend "../qapi-generated/qga-qapi-types.o",
which will be expanded to "qga/../qapi-generated/qga-qapi-types.o" when
building qemu-ga.

In top-level Makefile, we defined a target "qapi-generated/qga-qapi-types.o"
which was not equal to "qga/../qapi-generated/qga-qapi-types" in the
Makefile world. So "No such file" error happened when qemu-ga was linking.

The easy approach to fix is to change the target name to
"qga/../qapi-generated/qga-qapi-types.o", but it is weird.

So, in order to solve it more graciously, I move those temporary
files(qga-qapi-*.{c,h}) qemu-ga depends on to qemu-ga/qapi-generated,
this makes dependencies more clearer.

Signed-off-by: Dunrong Huang <address@hidden>
---
 Makefile          |   19 +++++++++----------
 qga/Makefile.objs |    4 ++--
 2 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/Makefile b/Makefile
index a1195ff..621cb86 100644
--- a/Makefile
+++ b/Makefile
@@ -173,7 +173,7 @@ qemu-img-cmds.h: $(SRC_PATH)/qemu-img-cmds.hx
        $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@,"  GEN  
 $@")
 
 qemu-ga$(EXESUF): LIBS = $(LIBS_QGA)
-qemu-ga$(EXESUF): QEMU_CFLAGS += -I qapi-generated
+qemu-ga$(EXESUF): QEMU_CFLAGS += -I qga/qapi-generated
 
 gen-out-type = $(subst .,-,$(suffix $@))
 
@@ -181,15 +181,15 @@ ifneq ($(wildcard config-host.mak),)
 include $(SRC_PATH)/tests/Makefile
 endif
 
-qapi-generated/qga-qapi-types.c qapi-generated/qga-qapi-types.h :\
+qga/qapi-generated/qga-qapi-types.c qga/qapi-generated/qga-qapi-types.h :\
 $(SRC_PATH)/qapi-schema-guest.json $(SRC_PATH)/scripts/qapi-types.py
-       $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py 
$(gen-out-type) -o qapi-generated -p "qga-" < $<, "  GEN   $@")
-qapi-generated/qga-qapi-visit.c qapi-generated/qga-qapi-visit.h :\
+       $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py 
$(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, "  GEN   $@")
+qga/qapi-generated/qga-qapi-visit.c qga/qapi-generated/qga-qapi-visit.h :\
 $(SRC_PATH)/qapi-schema-guest.json $(SRC_PATH)/scripts/qapi-visit.py
-       $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py 
$(gen-out-type) -o qapi-generated -p "qga-" < $<, "  GEN   $@")
-qapi-generated/qga-qmp-commands.h qapi-generated/qga-qmp-marshal.c :\
+       $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py 
$(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, "  GEN   $@")
+qga/qapi-generated/qga-qmp-commands.h qga/qapi-generated/qga-qmp-marshal.c :\
 $(SRC_PATH)/qapi-schema-guest.json $(SRC_PATH)/scripts/qapi-commands.py
-       $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py 
$(gen-out-type) -o qapi-generated -p "qga-" < $<, "  GEN   $@")
+       $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py 
$(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, "  GEN   $@")
 
 qapi-types.c qapi-types.h :\
 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-types.py
@@ -201,9 +201,7 @@ qmp-commands.h qmp-marshal.c :\
 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-commands.py
        $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py 
$(gen-out-type) -m -o "." < $<, "  GEN   $@")
 
-QGALIB_OBJ=$(addprefix qapi-generated/, qga-qapi-types.o qga-qapi-visit.o 
qga-qmp-marshal.o)
-QGALIB_GEN=$(addprefix qapi-generated/, qga-qapi-types.h qga-qapi-visit.h 
qga-qmp-commands.h)
-$(QGALIB_OBJ): $(QGALIB_GEN)
+QGALIB_GEN=$(addprefix qga/qapi-generated/, qga-qapi-types.h qga-qapi-visit.h 
qga-qmp-commands.h)
 $(qga-obj-y) qemu-ga.o: $(QGALIB_GEN)
 
 qemu-ga$(EXESUF): qemu-ga.o $(qga-obj-y) $(tools-obj-y) $(qapi-obj-y) 
$(qobject-obj-y) $(version-obj-y)
@@ -227,6 +225,7 @@ clean:
        rm -f $(foreach f,$(GENERATED_HEADERS),$(f) $(f)-timestamp)
        rm -f $(foreach f,$(GENERATED_SOURCES),$(f) $(f)-timestamp)
        rm -rf qapi-generated
+       rm -rf qga/qapi-generated
        $(MAKE) -C tests/tcg clean
        for d in $(ALL_SUBDIRS) $(QEMULIBS) libcacard; do \
        if test -d $$d; then $(MAKE) -C $$d $@ || exit 1; fi; \
diff --git a/qga/Makefile.objs b/qga/Makefile.objs
index b54b9b1..cd3e135 100644
--- a/qga/Makefile.objs
+++ b/qga/Makefile.objs
@@ -1,5 +1,5 @@
 qga-obj-y = commands.o guest-agent-command-state.o
 qga-obj-$(CONFIG_POSIX) += commands-posix.o channel-posix.o
 qga-obj-$(CONFIG_WIN32) += commands-win32.o channel-win32.o service-win32.o
-qga-obj-y += ../qapi-generated/qga-qapi-types.o 
../qapi-generated/qga-qapi-visit.o
-qga-obj-y += ../qapi-generated/qga-qmp-marshal.o
+qga-obj-y += qapi-generated/qga-qapi-types.o qapi-generated/qga-qapi-visit.o
+qga-obj-y += qapi-generated/qga-qmp-marshal.o
-- 
1.7.8.6