Put all trace.o into libqemuutil.a

Currently all trace.o are linked into qemu-system, qemu-img, 
qemu-nbd, qemu-io etc., even the corresponding components 
are not included.
Put all trace.o into libqemuutil.a that the linker would only pull in .o 
files containing symbols that are actually referenced by the 
program.


Signed-off -by: Anthony Xu <anthony.xu@intel.com>



diff --git a/Makefile b/Makefile
index 6c359b2..31d41a7 100644
--- a/Makefile
+++ b/Makefile
@@ -346,7 +346,7 @@ dtc/%:
        mkdir -p $@

 $(SUBDIR_RULES): libqemuutil.a libqemustub.a $(common-obj-y) $(chardev-obj-y) \
-       $(qom-obj-y) $(crypto-aes-obj-$(CONFIG_USER_ONLY)) $(trace-obj-y)
+       $(qom-obj-y) $(crypto-aes-obj-$(CONFIG_USER_ONLY))

 ROMSUBDIR_RULES=$(patsubst %,romsubdir-%, $(ROMS))
 # Only keep -O and -g cflags
@@ -366,11 +366,11 @@ Makefile: $(version-obj-y)
 # Build libraries

 libqemustub.a: $(stub-obj-y)
-libqemuutil.a: $(util-obj-y)
+libqemuutil.a: $(util-obj-y) $(trace-obj-y)

 ######################################################################

-COMMON_LDADDS = $(trace-obj-y) libqemuutil.a libqemustub.a
+COMMON_LDADDS = libqemuutil.a libqemustub.a

 qemu-img.o: qemu-img-cmds.h

diff --git a/Makefile.target b/Makefile.target
index d5ff0c7..69239e0 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -185,8 +185,7 @@ dummy := $(call unnest-vars,.., \
                qom-obj-y \
                io-obj-y \
                common-obj-y \
-               common-obj-m \
-               trace-obj-y)
+               common-obj-m)
 target-obj-y := $(target-obj-y-save)
 all-obj-y += $(common-obj-y)
 all-obj-y += $(target-obj-y)
@@ -198,7 +197,7 @@ all-obj-$(CONFIG_SOFTMMU) += $(io-obj-y)

 $(QEMU_PROG_BUILD): config-devices.mak

-COMMON_LDADDS = $(trace-obj-y) ../libqemuutil.a ../libqemustub.a
+COMMON_LDADDS = ../libqemuutil.a ../libqemustub.a

 # build either PROG or PROGW
 $(QEMU_PROG_BUILD): $(all-obj-y) $(COMMON_LDADDS)
diff --git a/tests/Makefile.include b/tests/Makefile.include
index f3de81f..579ec07 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -519,7 +519,7 @@ QEMU_CFLAGS += -I$(SRC_PATH)/tests


 # Deps that are common to various different sets of tests below
-test-util-obj-y = $(trace-obj-y) libqemuutil.a libqemustub.a
+test-util-obj-y = libqemuutil.a libqemustub.a
 test-qom-obj-y = $(qom-obj-y) $(test-util-obj-y)
 test-qapi-obj-y = tests/test-qapi-visit.o tests/test-qapi-types.o \
        tests/test-qapi-event.o tests/test-qmp-introspect.o \

On Tue, Apr 04, 2017 at 09:39:39PM +0000, Xu, Anthony wrote:
> Put all trace.o into libqemuutil.a
> 
> Currently all trace.o are linked into qemu-system, qemu-img, 
> qemu-nbd, qemu-io etc., even the corresponding components 
> are not included.
> Put all trace.o into libqemuutil.a that the linker would only pull in .o 
> files containing symbols that are actually referenced by the 
> program.
> 
> 
> Signed-off -by: Anthony Xu <anthony.xu@intel.com>

Reviewed-by: Daniel P. Berrange <berrange@redhat.com>


Regards,
Daniel
-- 
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On Tue, Apr 04, 2017 at 09:39:39PM +0000, Xu, Anthony wrote:

Thanks, applied to my tracing-next tree:
https://github.com/stefanha/qemu/commits/tracing-next

I fixed up the patch when applying it.  Comments below:

> Put all trace.o into libqemuutil.a

Please use the "trace: " prefix for tracing patches.

All components of QEMU have commonly used prefixes that make it easy to
identify which area a patch affects.  People reading the mailing list or
grepping through git logs rely on this.

> 
> Currently all trace.o are linked into qemu-system, qemu-img, 
> qemu-nbd, qemu-io etc., even the corresponding components 
> are not included.
> Put all trace.o into libqemuutil.a that the linker would only pull in .o 
> files containing symbols that are actually referenced by the 
> program.
> 
> 
> Signed-off -by: Anthony Xu <anthony.xu@intel.com>

Please use git-format-patch(1) to send correctly formatted patches in
the future.  git-am(1) was unable to apply your email and I had to do it
manually.

Stefan