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