[libvirt] [dbus PATCH] build: convert to Meson/Ninja build system
Pavel Hrdina
phrdina at redhat.com
Tue Sep 17 18:04:19 UTC 2019
On Tue, Sep 17, 2019 at 06:39:17PM +0200, Ján Tomko wrote:
> On Tue, Sep 17, 2019 at 05:20:43PM +0200, Pavel Hrdina wrote:
> > Meson build system is simple and quick compared to Autotools and it's
> > able to fully replace our Autotools usage. There are few drawbacks as
> > it's a fairly new build system, it requires Python 3.5 and Ninja 1.5.0,
> > it's still evolving and the user base is not that large and there were
> > some tweaks required to achieve the same functionality.
> >
> > However, there are benefits, the configure and build time is way shorter
>
> Neat, despite the colors
>
> > and build definition files are more readable and easier to maintain.
> >
> > Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
> > ---
> > .gitignore | 1 +
> > AUTHORS.in | 2 +-
> > HACKING.md | 16 +--
> > Makefile.am | 51 -------
> > README.md | 12 +-
> > autogen.sh | 52 -------
> > configure.ac | 87 ------------
> > data/Makefile.am | 83 -----------
> > data/meson.build | 15 ++
> > data/session/meson.build | 6 +
> > data/system/meson.build | 18 +++
> > docs/Makefile.am | 21 ---
> > docs/meson.build | 8 ++
> > libvirt-dbus.spec.in | 8 +-
> > m4/manywarnings.m4 | 276 ------------------------------------
> > m4/virt-arg.m4 | 154 --------------------
> > m4/virt-compile-pie.m4 | 35 -----
> > m4/virt-compile-warnings.m4 | 203 --------------------------
> > m4/virt-linker-relro.m4 | 35 -----
> > m4/warnings.m4 | 79 -----------
> > meson.build | 271 +++++++++++++++++++++++++++++++++++
> > meson_options.txt | 6 +
> > run.in | 4 +-
> > src/Makefile.am | 66 ---------
> > src/domain.c | 2 +-
> > src/meson.build | 54 +++++++
> > tests/Makefile.am | 57 --------
> > tests/meson.build | 49 +++++++
> > tools/gen-authors.sh | 8 ++
> > 29 files changed, 454 insertions(+), 1225 deletions(-)
> > delete mode 100644 Makefile.am
> > delete mode 100755 autogen.sh
> > delete mode 100644 configure.ac
> > delete mode 100644 data/Makefile.am
> > create mode 100644 data/meson.build
> > create mode 100644 data/session/meson.build
> > create mode 100644 data/system/meson.build
> > delete mode 100644 docs/Makefile.am
> > create mode 100644 docs/meson.build
> > delete mode 100644 m4/manywarnings.m4
> > delete mode 100644 m4/virt-arg.m4
> > delete mode 100644 m4/virt-compile-pie.m4
> > delete mode 100644 m4/virt-compile-warnings.m4
> > delete mode 100644 m4/virt-linker-relro.m4
> > delete mode 100644 m4/warnings.m4
> > create mode 100644 meson.build
> > create mode 100644 meson_options.txt
> > mode change 100644 => 100755 run.in
> > delete mode 100644 src/Makefile.am
> > create mode 100644 src/meson.build
> > delete mode 100644 tests/Makefile.am
> > create mode 100644 tests/meson.build
> > create mode 100755 tools/gen-authors.sh
> >
> > -dist-hook: gen-AUTHORS
> > -
> > -# Generate the AUTHORS file (with all entries since the switch to git)
> > -# and insert it into the directory we're about to use to create a tarball.
> > -.PHONY: gen-AUTHORS
> > -gen-AUTHORS:
> > - $(AM_V_GEN)\
> > - if test -d $(srcdir)/.git; then \
> > - ( \
> > - cd $(srcdir) && \
> > - git log --pretty=format:' %aN <%aE>' | sort -u \
> > - ) > all.list && \
> > - sort -u $(srcdir)/AUTHORS.in > maint.list && \
> > - comm -23 all.list maint.list > contrib.list && \
>
> This filtering is not present in the meson version, but I can live with
> that "regression"
I can fix that, will look into it.
> > - contrib="`cat contrib.list`" && \
> > - perl -p -e "s/#contributorslist#// and print '$$contrib'" \
> > - < $(srcdir)/AUTHORS.in > $(distdir)/AUTHORS-tmp && \
> > - mv -f $(distdir)/AUTHORS-tmp $(distdir)/AUTHORS && \
> > - rm -f all.list maint.list contrib.list; \
> > - fi
> > -
>
>
> > diff --git a/configure.ac b/configure.ac
> > deleted file mode 100644
> > index 24ebb26..0000000
> > --- a/configure.ac
> > +++ /dev/null
> > -LIBVIRT_DBUS_MAJOR_VERSION=`echo $VERSION | awk -F. '{print $1}'`
> > -LIBVIRT_DBUS_MINOR_VERSION=`echo $VERSION | awk -F. '{print $2}'`
> > -LIBVIRT_DBUS_MICRO_VERSION=`echo $VERSION | awk -F. '{print $3}'`
> > -LIBVIRT_DBUS_VERSION=$LIBVIRT_DBUS_MAJOR_VERSION.$LIBVIRT_DBUS_MINOR_VERSION.$LIBVIRT_DBUS_MICRO_VERSION$LIBVIRT_DBUS_MICRO_VERSION_SUFFIX
> > -LIBVIRT_DBUS_VERSION_NUMBER=`expr $LIBVIRT_DBUS_MAJOR_VERSION \* 1000000 + $LIBVIRT_dbus_MINOR_VERSION \* 1000 + $LIBVIRT_DBUS_MICRO_VERSION`
> > -
> > -AC_SUBST([LIBVIRT_DBUS_MAJOR_VERSION])
> > -AC_SUBST([LIBVIRT_DBUS_MINOR_VERSION])
> > -AC_SUBST([LIBVIRT_DBUS_MICRO_VERSION])
> > -AC_SUBST([LIBVIRT_DBUS_VERSION])
> > -AC_SUBST([LIBVIRT_DBUS_VERSION_INFO])
> > -AC_SUBST([LIBVIRT_DBUS_VERSION_NUMBER])
> > -
>
> We lose these, but they were unusued.
>
> > -AC_PROG_CC
> > -AC_PROG_MKDIR_P
> > -AM_PROG_CC_C_O
> > -AC_PROG_CC_STDC
> > -AC_PROG_LIBTOOL
> > -AC_PATH_PROGS([FLAKE8], [flake8 flake8-3.6])
> > -
> > diff --git a/meson.build b/meson.build
> > new file mode 100644
> > index 0000000..9cc4417
> > --- /dev/null
> > +++ b/meson.build
> > @@ -0,0 +1,271 @@
> > +project(
> > + 'libvirt-dbus', 'c',
> > + version:'1.4.0',
> > + license: 'LGPLv2+',
> > + meson_version: '>= 0.49.0',
> > + default_options: [
> > + 'buildtype=debugoptimized',
> > + 'c_std=gnu99',
> > + ]
> > +)
> > +
> > +
> > +conf = configuration_data()
> > +conf.set('PACKAGE', meson.project_name())
> > +conf.set('VERSION', meson.project_version())
> > +conf.set('build_root', meson.build_root())
> > +conf.set('sbindir', get_option('sbindir'))
> > +conf.set('source_root', meson.source_root())
> > +
> > +# Dependencies
> > +
> > +glib2_version = '2.44.0'
> > +libvirt_version = '3.0.0'
> > +libvirt_glib_version = '0.0.7'
> > +
> > +dep_gio_unix = dependency('gio-unix-2.0', version: '>=' + glib2_version)
> > +dep_glib = dependency('glib-2.0', version: '>=' + glib2_version)
> > +dep_libvirt = dependency('libvirt', version: '>=' + libvirt_version)
> > +dep_libvirt_glib = dependency('libvirt-glib-1.0', version: '>=' + libvirt_glib_version)
> > +
> > +conf.set('GLIB2_REQUIRED', glib2_version)
> > +conf.set('LIBVIRT_REQUIRED', libvirt_version)
> > +conf.set('LIBVIRT_GLIB_REQUIRED', libvirt_glib_version)
> > +
> > +
> > +# Configure options
> > +
> > +conf.set('SYSTEM_USER', get_option('system_user'))
> > +
> > +opt_dirs = [
> > + 'dbus_interfaces',
> > + 'dbus_services',
> > + 'dbus_system_services',
> > + 'dbus_system_policies',
> > + 'polkit_rules',
> > +]
> > +
> > +foreach opt_dir : opt_dirs
> > + value = get_option(opt_dir)
> > + varname = opt_dir + '_dir'
> > + if opt_dir.startswith('/')
> > + set_variable(varname, value)
> > + else
> > + set_variable(varname, join_paths(get_option('datadir'), value))
> > + endif
> > +endforeach
> > +
> > +
> > +# Compile flags
> > +
> > +common_flags = [
> > + '-DVIRT_DBUS_INTERFACES_DIR="@0@"'.format(dbus_interfaces_dir),
> > +]
> > +
> > +cc_flags = [
> > + '-W',
> > + '-Waddress',
> > + '-Waggressive-loop-optimizations',
> > + '-Wall',
> > + '-Warray-bounds=2',
> > + '-Wattributes',
> > + '-Wbad-function-cast',
> > + '-Wbool-compare',
> > + '-Wbuiltin-macro-redefined',
> > + '-Wcast-align',
> > + '-Wchar-subscripts',
> > + '-Wclobbered',
> > + '-Wcomment',
> > + '-Wcomments',
> > + '-Wcoverage-mismatch',
> > + '-Wcpp',
> > + '-Wdate-time',
> > + '-Wdeprecated-declarations',
> > + '-Wdesignated-init',
> > + '-Wdiscarded-array-qualifiers',
> > + '-Wdiscarded-qualifiers',
> > + '-Wdiv-by-zero',
> > + '-Wdouble-promotion',
> > + '-Wduplicated-cond',
> > + '-Wempty-body',
> > + '-Wendif-labels',
> > + '-Wextra',
> > + '-Wformat',
> > + '-Wformat-contains-nul',
> > + '-Wformat-extra-args',
> > + '-Wformat-nonliteral',
> > + '-Wformat-security',
> > + '-Wformat-y2k',
> > + '-Wformat-zero-length',
> > + '-Wframe-address',
>
> > + '-Wframe-larger-then=256',
>
> s/then/than/
>
> Also, 256 is not enough:
> ../src/connect.c:1613:1: error: stack frame size of 552 bytes in function 'virtDBusConnectNodeGetSecurityModel' [-Werror,-Wframe-larger-than=]
That explains why it was not working, will fix that.
>
> and -Werror is missing from the list
It should not be there by default, but I'll add it conditionally if we
are running meson from git.
> > + '-Wfree-nonheap-object',
> > + '-Whsa',
>
> > diff --git a/src/domain.c b/src/domain.c
> > index e8b1a0e..10fa8de 100644
> > --- a/src/domain.c
> > +++ b/src/domain.c
> > @@ -136,7 +136,7 @@ virtDBusDomainGVariantToCpumap(GVariantIter *iter,
> > guint cnt = 0;
> >
> > *cpumaplen = VIR_CPU_MAPLEN(cpus);
> > - *cpumap = g_new0(guchar, cpumaplen);
> > + *cpumap = g_new0(guchar, *cpumaplen);
> >
> > while (g_variant_iter_loop(iter, "b", &usable)) {
> > if (usable)
>
> Unrelated fix that should go in as a separate patch.
> To this hunk:
> Reviewed-by: Ján Tomko <jtomko at redhat.com>
Right, I don't know how it slipped into the meson work. Thanks, I'll
push it separately.
> > +flake8 = find_program('flake8', 'flake8-3', required: false)
> > +if flake8.found()
> > + test(
> > + 'flake8', flake8,
> > + args: [
> > + '--show-source',
> > + '--ignore=E501',
> > + meson.source_root(),
> > + ]
> > + )
>
> Can you include the text representation of E501?
> # E501: (line too long) warning is ignored.
Good idea, I'll add it there.
> The rest looks good to me, but I presume someone who actually touched
> meson before should take a look.
>
> Tested-by: Ján Tomko <jtomko at redhat.com>
Thanks for the review, I'll fix the issues pointed out.
Pavel
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