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[93.36.56.206]) by smtp.gmail.com with ESMTPSA id o4sm27046968wrx.25.2020.01.28.09.55.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jan 2020 09:55:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=4FrtgOEgXUNdCIxcJwPPgUbqVBramadjIg8sg/wlU/w=; b=JMfOO7BRH2CQRxl7c66XmYqpy9f2tBsxn1aHxCON0L0Q5lgs4WyD2m3sPdlczN4fvN 2SWpxXa9t9+0vkWlwUPzNo1v9HL5F2Govm8tjQid/P1u7aXzoycI6VjYzmTDPXvteVCs VKU2P9wGhe29C4C5b4SgLhlXOIe4siTJ4ct1IE+ey9fHCPzHM346nexKvsh6SN/3Ipr3 xCvKXgD3qrkzELcO9faxNZ/EV8CjF3lL6f65MyQSLW9GXiy+dfiU3A1xLNxp314Ks3/5 NPdKzaBpa4lsaWmN5K+UCwDA3t4iIw2a1CEcI0MUMA1ZQO4ikH/R4PJoq28Qv5iiaGdZ 9s0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=4FrtgOEgXUNdCIxcJwPPgUbqVBramadjIg8sg/wlU/w=; b=Rc3d50M0UEMCqrh9VmsXzU0Vgs8oqeZtaRBrwRV/nZD1/NVw1rsXQSU+9jmuxrPlZL ak84Geniwdpe0KxeqARYvZo9tuMUk6Qr+2W6kARzxUMqwVF4PO2ybhLkGG+yQWkgh/uB 7OFBy+d3cKOYYxp5G0FCExKiPb2Wzfdh2WDRF9+jXupEElAAAFCcUUSOv64Y3rzWSMPT msjPBvxVOcfz+bc00GFAw6oWEfWFBF9ayOPLiO2tAnafvfuiCM2BlTahiOAmIYZuaHLz xED+hgmv7x8UAcN/57o0b1nWGuMC65Jrvmt/lpdzlRb8VoOZv7kpSMHfrslg8XKgb2s8 ugqA== X-Gm-Message-State: APjAAAWehLIwvzknGQEQQDnVj7CkyIDeIZYNBuFstrMJDpCcnXYZp5cG bjIpb5WOLJOp8RqzJxFp/ZExN3Pn X-Google-Smtp-Source: APXvYqxT81owh67o8473189upClJq5oNaBWgKsvFjFyC6JzQrigA3+367al4udd53zWM0DBdyHiwNA== X-Received: by 2002:a5d:608a:: with SMTP id w10mr28435450wrt.136.1580234137022; Tue, 28 Jan 2020 09:55:37 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 046/142] meson: add modules infrastructure Date: Tue, 28 Jan 2020 18:52:06 +0100 Message-Id: <20200128175342.9066-47-pbonzini@redhat.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200128175342.9066-1-pbonzini@redhat.com> References: <20200128175342.9066-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::434 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: Marc-Andr=C3=A9 Lureau Signed-off-by: Marc-Andr=C3=A9 Lureau --- Makefile | 10 +-------- Makefile.target | 6 +++++ meson.build | 53 +++++++++++++++++++++++++++++++++++++++++++++ rules.mak | 10 ++++----- scripts/undefsym.sh | 20 +++++++++++++++++ 5 files changed, 85 insertions(+), 14 deletions(-) create mode 100755 scripts/undefsym.sh diff --git a/Makefile b/Makefile index af62f4ed9d..0152a2b397 100644 --- a/Makefile +++ b/Makefile @@ -237,7 +237,7 @@ subdir-capstone: capstone/all subdir-slirp: slirp/all =20 $(filter %/all, $(TARGET_DIRS_RULES)): libqemuutil.a $(common-obj-y) \ - $(qom-obj-y) + $(qom-obj-y) block.syms qemu.syms =20 ROM_DIRS =3D $(addprefix pc-bios/, $(ROMS)) ROM_DIRS_RULES=3D$(foreach t, all clean, $(addsuffix /$(t), $(ROM_DIRS))) @@ -438,14 +438,6 @@ install: all $(if $(BUILD_DOCS),install-doc) \ ifneq ($(TOOLS),) $(call install-prog,$(TOOLS),$(DESTDIR)$(bindir)) endif -ifneq ($(CONFIG_MODULES),) - $(INSTALL_DIR) "$(DESTDIR)$(qemu_moddir)" - for s in $(modules-m:.mo=3D$(DSOSUF)); do \ - t=3D"$(DESTDIR)$(qemu_moddir)/$$(echo $$s | tr / -)"; \ - $(INSTALL_LIB) $$s "$$t"; \ - test -z "$(STRIP)" || $(STRIP) "$$t"; \ - done -endif ifneq ($(HELPERS-y),) $(call install-prog,$(HELPERS-y),$(DESTDIR)$(libexecdir)) endif diff --git a/Makefile.target b/Makefile.target index 13e21b0c44..acde7778f0 100644 --- a/Makefile.target +++ b/Makefile.target @@ -163,6 +163,12 @@ obj-y +=3D memory_mapping.o obj-y +=3D migration/ram.o LIBS :=3D $(libs_softmmu) $(LIBS) =20 +# Temporary until emulators are linked by Meson +LIBS :=3D $(LIBS) @../block.syms @../qemu.syms +ifneq ($(CONFIG_MODULES),y) +LIBS :=3D $(LIBS) +endif + # Hardware support ifeq ($(TARGET_NAME), sparc64) obj-y +=3D hw/sparc64/ diff --git a/meson.build b/meson.build index 3c398d1bf5..1702133989 100644 --- a/meson.build +++ b/meson.build @@ -6,6 +6,8 @@ ss =3D import('sourceset') config_host =3D kconfig.load(meson.current_build_dir() / 'config-host.mak') config_all_disas =3D kconfig.load(meson.current_build_dir() / 'config-all-= disas.mak') =20 +enable_modules =3D 'CONFIG_MODULES' in config_host + add_project_arguments(config_host['CFLAGS'].split(), language: ['c', 'objc']) add_project_arguments(config_host['QEMU_CFLAGS'].split(), @@ -278,6 +280,7 @@ endforeach util_ss =3D ss.source_set() stub_ss =3D ss.source_set() trace_ss =3D ss.source_set() +block_ss =3D ss.source_set() common_ss =3D ss.source_set() softmmu_ss =3D ss.source_set() user_ss =3D ss.source_set() @@ -285,6 +288,7 @@ bsd_user_ss =3D ss.source_set() linux_user_ss =3D ss.source_set() specific_ss =3D ss.source_set() =20 +modules =3D {} hw_arch =3D {} target_arch =3D {} target_softmmu_arch =3D {} @@ -388,6 +392,12 @@ subdir('authz') subdir('crypto') subdir('ui') =20 + +if enable_modules + libmodulecommon =3D static_library('module-common', files('module-common= .c') + genh, pic: true, c_args: '-DBUILD_DSO') + modulecommon =3D declare_dependency(link_whole: libmodulecommon, compile= _args: '-DBUILD_DSO') +endif + # Build targets from sourcesets =20 stub_ss =3D stub_ss.apply(config_host, strict: false) @@ -404,6 +414,49 @@ subdir('io') subdir('fsdev') subdir('target') =20 +mods =3D [] +block_mods =3D [] +softmmu_mods =3D [] +foreach d, list : modules + foreach m : list + if enable_modules and host_machine.system() !=3D 'windows' + sl =3D static_library(d + '-' + m[0], m[1], dependencies: [m[2], mod= ulecommon], pic: true) + if d =3D=3D 'block' + block_mods +=3D sl + else + softmmu_mods +=3D sl + endif + mods +=3D {'dir': d, 'name': m[0], 'lib': sl, 'deps': m[2]} + else + if d =3D=3D 'block' + block_ss.add(when: m[2], if_true: m[1]) + else + softmmu_ss.add(when: m[2], if_true: m[1]) + endif + endif + endforeach +endforeach + +nm =3D find_program('nm') +undefsym =3D find_program('scripts/undefsym.sh') +block_syms =3D custom_target('block.syms', output: 'block.syms', + input: [libqemuutil, block_mods], + capture: true, + command: [undefsym, nm, '@INPUT@']) +qemu_syms =3D custom_target('qemu.syms', output: 'qemu.syms', + input: [libqemuutil, softmmu_mods], + capture: true, + command: [undefsym, nm, '@INPUT@']) + + +foreach m : mods + shared_module(m['dir'] + '-' + m['name'], + name_prefix: '', + link_whole: [m['lib']], + install: true, + install_dir: config_host['qemu_moddir']) +endforeach + common_ss.add_all(when: 'CONFIG_SOFTMMU', if_true: softmmu_ss) common_ss.add_all(when: 'CONFIG_USER_ONLY', if_true: user_ss) =20 diff --git a/rules.mak b/rules.mak index 9dd3b7e2ec..8571aec190 100644 --- a/rules.mak +++ b/rules.mak @@ -61,17 +61,17 @@ endif # This is necessary because the exectuable itself may not use the function= , in # which case the function would not be linked in. Then the DSO loading will # fail because of the missing symbol. -process-archive-undefs =3D $(filter-out %.a %.fa %.mo,$1) \ +process-archive-undefs =3D $(filter-out %.a %.fa %.mo %$(DSOSUF),$1) \ $(addprefix $(WL_U), \ $(filter $(call defined-symbols,$(filter %.a %.fa, $1= )), \ - $(call undefined-symbols,$(filter %.mo,$1)))= ) \ + $(call undefined-symbols,$(filter %.mo %$(DSOSUF),$1)))) \ $(foreach l,$(filter %.fa,$1),$(call whole-archive,$l)) \ $(filter %.a,$1) =20 -extract-libs =3D $(strip $(foreach o,$(filter-out %.mo,$1),$($o-libs))) +extract-libs =3D $(strip $(foreach o,$(filter-out %.mo %$(DSOSUF),$1),$($o= -libs))) expand-objs =3D $(strip $(sort $(filter %.o,$1)) \ - $(foreach o,$(filter %.mo,$1),$($o-objs)) \ - $(filter-out %.o %.mo,$1)) + $(foreach o,$(filter %.mo %$(DSOSUF),$1),$($o-objs)) \ + $(filter-out %.o %.mo %$(DSOSUF),$1)) =20 %.o: %.c @mkdir -p $(dir $@) diff --git a/scripts/undefsym.sh b/scripts/undefsym.sh new file mode 100755 index 0000000000..d4871f0b35 --- /dev/null +++ b/scripts/undefsym.sh @@ -0,0 +1,20 @@ +#! /bin/bash + +# Before a shared module's DSO is produced, a static library is built for = it +# and passed to this script. The script generates -Wl,-u options to force +# the inclusion of symbol from libqemuutil.a if the shared modules need th= em, +# This is necessary because the modules may use functions not needed by the +# executable itself, which would cause the function to not be linked in. +# Then the DSO loading would fail because of the missing symbol. + +if test $# -le 2; then + exit 0 +fi + +NM=3D$1 +staticlib=3D$2 +shift 2 +# Find symbols defined in static libraries and undefined in shared modules +comm -12 \ + <( $NM -P -g $staticlib | awk '$2!=3D"U"{print "-Wl,-u," $1}' | sort -u)= \ + <( $NM -P -g "$@" | awk '$2=3D=3D"U"{print "-Wl,-u," $1}' | sort -u) --=20 2.21.0