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From ef6f26bb4a43131a7a3de4109aa9aeb145ad139a Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Wed, 16 Jul 2014 02:20:27 -0500
Subject: [CHANGE 27/29] rules.mak: allow per object cflags and libs
To: rhvirt-patches@redhat.com,
jen@redhat.com
RH-Author: Fam Zheng <famz@redhat.com>
Message-id: <1405477228-11490-4-git-send-email-famz@redhat.com>
Patchwork-id: 59917
O-Subject: [RHEL-7 qemu-kvm PATCH 3/4] rules.mak: allow per object cflags and libs
Bugzilla: 1017685
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
Adds extract-libs in LINK to expand any "per object libs", the syntax to define
such a libs options is like:
foo.o-libs := $(CURL_LIBS)
in block/Makefile.objs.
Similarly,
foo.o-cflags := $(FOO_CFLAGS)
is also supported.
"foo.o" must be listed in a nested var (e.g. common-obj-y) to make the
option variables effective.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 5c0d52bcd3aada33e274ea7dad75955f98bc2636)
Signed-off-by: Fam Zheng <famz@redhat.com>
---
rules.mak | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
Signed-off-by: jen <jen@redhat.com>
---
rules.mak | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/rules.mak b/rules.mak
index 0c5125d..355c275 100644
--- a/rules.mak
+++ b/rules.mak
@@ -17,15 +17,17 @@ QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d
# Same as -I$(SRC_PATH) -I., but for the nested source/object directories
QEMU_INCLUDES += -I$(<D) -I$(@D)
+extract-libs = $(strip $(foreach o,$1,$($o-libs)))
+
%.o: %.c
- $(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," CC $(TARGET_DIR)$@")
+ $(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) -c -o $@ $<," CC $(TARGET_DIR)$@")
%.o: %.rc
$(call quiet-command,$(WINDRES) -I. -o $@ $<," RC $(TARGET_DIR)$@")
ifeq ($(LIBTOOL),)
LINK = $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \
$(sort $(filter %.o, $1)) $(filter-out %.o, $1) $(version-obj-y) \
- $(LIBS)," LINK $(TARGET_DIR)$@")
+ $(call extract-libs,$^) $(LIBS)," LINK $(TARGET_DIR)$@")
else
LIBTOOL += $(if $(V),,--quiet)
%.lo: %.c
@@ -41,7 +43,7 @@ LINK = $(call quiet-command,\
$(sort $(filter %.o, $1)) $(filter-out %.o, $1) \
$(if $(filter %.lo %.la,$^),$(version-lobj-y),$(version-obj-y)) \
$(if $(filter %.lo %.la,$^),$(LIBTOOLFLAGS)) \
- $(LIBS),$(if $(filter %.lo %.la,$^),"lt LINK ", " LINK ")"$(TARGET_DIR)$@")
+ $(call extract-libs,$^) $(LIBS),$(if $(filter %.lo %.la,$^),"lt LINK ", " LINK ")"$(TARGET_DIR)$@")
endif
%.asm: %.S
@@ -114,11 +116,22 @@ $(eval $1 = $(value save-$2-$1) $$(subdir-$2-$1))
$(eval save-$2-$1 :=)
endef
+define fix-obj-vars
+$(foreach v,$($1), \
+ $(if $($v-cflags), \
+ $(eval $2$v-cflags := $($v-cflags)) \
+ $(eval $v-cflags := )) \
+ $(if $($v-libs), \
+ $(eval $2$v-libs := $($v-libs)) \
+ $(eval $v-libs := )))
+endef
+
define unnest-dir
$(foreach var,$(nested-vars),$(call push-var,$(var),$1/))
$(eval obj-parent-$1 := $(obj))
$(eval obj := $(if $(obj),$(obj)/$1,$1))
$(eval include $(SRC_PATH)/$1/Makefile.objs)
+$(foreach v,$(nested-vars),$(call fix-obj-vars,$v,$(if $(obj),$(obj)/)))
$(eval obj := $(obj-parent-$1))
$(eval obj-parent-$1 := )
$(foreach var,$(nested-vars),$(call pop-var,$(var),$1/))
--
1.9.3