From patchwork Fri Sep 13 09:59:12 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fam Zheng X-Patchwork-Id: 274703 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 2B8C72C011D for ; Fri, 13 Sep 2013 20:01:18 +1000 (EST) Received: from localhost ([::1]:45740 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQBg-0002qT-Ab for incoming@patchwork.ozlabs.org; Fri, 13 Sep 2013 06:01:16 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49274) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQAu-0002ck-UD for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:00:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VKQAo-0004ly-E9 for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:00:28 -0400 Received: from mx1.redhat.com ([209.132.183.28]:21969) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQAo-0004lt-7A for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:00:22 -0400 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r8D9xukY001869 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 13 Sep 2013 05:59:56 -0400 Received: from T430s.nay.redhat.com ([10.66.5.155]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id r8D9xHR9013109; Fri, 13 Sep 2013 05:59:49 -0400 From: Fam Zheng To: qemu-devel@nongnu.org Date: Fri, 13 Sep 2013 17:59:12 +0800 Message-Id: <1379066356-14986-5-git-send-email-famz@redhat.com> In-Reply-To: <1379066356-14986-1-git-send-email-famz@redhat.com> References: <1379066356-14986-1-git-send-email-famz@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: peter.maydell@linaro.org, famz@redhat.com, mjt@tls.msk.ru, alex@alex.org.uk, pbonzini@redhat.com, vilanova@ac.upc.edu, rth@twiddle.net Subject: [Qemu-devel] [PATCH v9 4/8] build-sys: introduce common-obj-m and block-obj-m for DSO X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add necessary rules and flags for shared object generation. $(common-obj-m) will include $(block-obj-m), like $(common-obj-y) does for $(block-obj-y). The new rules introduced here are: 0) For all %.so compiling: QEMU_CFLAGS += -fPIC 1) %.o in $(common-obj-m) is compiled to %.o, then linked to %.so. 2) %.mo in $(common-obj-m) is the placeholder for %.so for pattern matching in Makefile. It's linked to "-shared" with all its dependencies (multiple *.o) as input. Which means the list of depended objects must be specified in each sub-Makefile.objs: foo.mo-objs := bar.o baz.o qux.o in the same style with foo.o-cflags and foo.o-libs. The objects here will be prefixed with "$(obj)/" if it's a subdirectory Makefile.objs. Also introduce --enable-modules in configure, the option will enable support of shared object build. Otherwise objects are static linked to executables. Signed-off-by: Fam Zheng --- Makefile | 10 ++++++++-- Makefile.objs | 2 ++ Makefile.target | 6 +++++- configure | 14 ++++++++++++++ rules.mak | 54 +++++++++++++++++++++++++++++++++++++++++++++--------- 5 files changed, 74 insertions(+), 12 deletions(-) diff --git a/Makefile b/Makefile index a23b95c..ef76967 100644 --- a/Makefile +++ b/Makefile @@ -122,7 +122,9 @@ dummy := $(call unnest-vars,, \ util-obj-y \ qga-obj-y \ block-obj-y \ - common-obj-y) + block-obj-m \ + common-obj-y \ + common-obj-m) ifneq ($(wildcard config-host.mak),) include $(SRC_PATH)/tests/Makefile @@ -131,7 +133,7 @@ ifeq ($(CONFIG_SMARTCARD_NSS),y) include $(SRC_PATH)/libcacard/Makefile endif -all: $(DOCS) $(TOOLS) $(HELPERS-y) recurse-all +all: $(DOCS) $(TOOLS) $(HELPERS-y) recurse-all modules vl.o: QEMU_CFLAGS+=$(GPROF_CFLAGS) @@ -249,6 +251,10 @@ clean: rm -f qemu-options.def find . -name '*.[oda]' -type f -exec rm -f {} + find . -name '*.l[oa]' -type f -exec rm -f {} + + find . -name '*.so' -type f -exec rm -f {} + + find . -name '*.mo' -type f -exec rm -f {} + + find . -name '*.dll' -type f -exec rm -f {} + + rm -f $(TOOLS) $(HELPERS-y) qemu-ga TAGS cscope.* *.pod *~ */*~ rm -Rf .libs rm -f qemu-img-cmds.h diff --git a/Makefile.objs b/Makefile.objs index 4f7a364..023166b 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -19,6 +19,8 @@ block-obj-y += qemu-coroutine.o qemu-coroutine-lock.o qemu-coroutine-io.o block-obj-y += qemu-coroutine-sleep.o block-obj-y += coroutine-$(CONFIG_COROUTINE_BACKEND).o +block-obj-m = block/ + ifeq ($(CONFIG_VIRTIO)$(CONFIG_VIRTFS)$(CONFIG_PCI),yyy) # Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add. # only pull in the actual virtio-9p device if we also enabled virtio. diff --git a/Makefile.target b/Makefile.target index 87906ea..7fb9e4d 100644 --- a/Makefile.target +++ b/Makefile.target @@ -152,7 +152,11 @@ obj-y-save := $(obj-y) block-obj-y := common-obj-y := include $(SRC_PATH)/Makefile.objs -dummy := $(call unnest-vars,..,block-obj-y common-obj-y) +dummy := $(call unnest-vars,.., \ + block-obj-y \ + block-obj-m \ + common-obj-y \ + common-obj-m) # Now restore obj-y obj-y := $(obj-y-save) diff --git a/configure b/configure index cc3cd4d..5bc7256 100755 --- a/configure +++ b/configure @@ -190,6 +190,9 @@ mingw32="no" gcov="no" gcov_tool="gcov" EXESUF="" +DSOSUF=".so" +LDFLAGS_SHARED="-shared" +modules="no" prefix="/usr/local" mandir="\${prefix}/share/man" datadir="\${prefix}/share" @@ -485,6 +488,7 @@ OpenBSD) Darwin) bsd="yes" darwin="yes" + LDFLAGS_SHARED="-bundle" if [ "$cpu" = "x86_64" ] ; then QEMU_CFLAGS="-arch x86_64 $QEMU_CFLAGS" LDFLAGS="-arch x86_64 $LDFLAGS" @@ -584,6 +588,7 @@ fi if test "$mingw32" = "yes" ; then EXESUF=".exe" + DSOSUF=".dll" QEMU_CFLAGS="-DWIN32_LEAN_AND_MEAN -DWINVER=0x501 $QEMU_CFLAGS" # enable C99/POSIX format strings (needs mingw32-runtime 3.15 or later) QEMU_CFLAGS="-D__USE_MINGW_ANSI_STDIO=1 $QEMU_CFLAGS" @@ -646,6 +651,8 @@ for opt do ;; --disable-debug-info) ;; + --enable-modules) modules="yes" + ;; --cpu=*) ;; --target-list=*) target_list="$optarg" @@ -1048,6 +1055,7 @@ echo " --libdir=PATH install libraries in PATH" echo " --sysconfdir=PATH install config in PATH$confsuffix" echo " --localstatedir=PATH install local state in PATH (set at runtime on win32)" echo " --with-confsuffix=SUFFIX suffix for QEMU data inside datadir and sysconfdir [$confsuffix]" +echo " --enable-modules enable modules support" echo " --enable-debug-tcg enable TCG debugging" echo " --disable-debug-tcg disable TCG debugging (default)" echo " --enable-debug-info enable debugging information (default)" @@ -3572,6 +3580,7 @@ echo "python $python" if test "$slirp" = "yes" ; then echo "smbd $smbd" fi +echo "module support $modules" echo "host CPU $cpu" echo "host big endian $bigendian" echo "target list $target_list" @@ -3689,6 +3698,9 @@ echo "libs_softmmu=$libs_softmmu" >> $config_host_mak echo "ARCH=$ARCH" >> $config_host_mak +if test "$modules" = "yes"; then + echo "CONFIG_MODULES=y" >> $config_host_mak +fi case "$cpu" in arm|i386|x86_64|x32|ppc|aarch64) # The TCG interpreter currently does not support ld/st optimization. @@ -4175,6 +4187,8 @@ echo "LIBTOOLFLAGS=$LIBTOOLFLAGS" >> $config_host_mak echo "LIBS+=$LIBS" >> $config_host_mak echo "LIBS_TOOLS+=$libs_tools" >> $config_host_mak echo "EXESUF=$EXESUF" >> $config_host_mak +echo "DSOSUF=$DSOSUF" >> $config_host_mak +echo "LDFLAGS_SHARED=$LDFLAGS_SHARED" >> $config_host_mak echo "LIBS_QGA+=$libs_qga" >> $config_host_mak echo "POD2MAN=$POD2MAN" >> $config_host_mak echo "TRANSLATE_OPT_CFLAGS=$TRANSLATE_OPT_CFLAGS" >> $config_host_mak diff --git a/rules.mak b/rules.mak index 355c275..43a502e 100644 --- a/rules.mak +++ b/rules.mak @@ -17,7 +17,11 @@ QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d # Same as -I$(SRC_PATH) -I., but for the nested source/object directories QEMU_INCLUDES += -I$(