[Buildroot] [PATCH v3 1/3] meson: new package

[Eric Le Bihan <eric.le.bihan.dev@free.fr>]

Hi!

On 17-10-08 12:17:54, Yann E. MORIN wrote:
> J?rg, ?ric, All,
>
> On 2017-07-27 11:55 +0200, J?rg Krause spake thusly:
> > From: Eric Le Bihan <eric.le.bihan.dev@free.fr>
> >
> > This new package provides the host variant of the Meson Build System, an
> > open source build system meant to be both extremely fast, and as user
> > friendly as possible.
> >
> > More precisely, Meson creates configuration files for the Ninja build
> > system.
> >
> > Besides building Meson, it generates a configuration file
> > ("$(HOST_DIR)/etc/meson/cross-compilation.conf") to be used when
> > cross-compiling a Meson-based project.
> >
> > Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
> > [J?rg Krause:
> >  * bump to version 0.41.2
> >  * use explicit tarball release instead of github helper
> >  * use explicit sed
> >  * pass BR2_GCC_TARGET_CPU to cross file]
> >
> > Signed-off-by: J?rg Krause <joerg.krause@embedded.rocks>
> > ---
> > v3:
> >  * fix missing mkdir
> > ---
> >  package/meson/cross-compilation.conf.in | 15 +++++++++++++++
> >  package/meson/meson.hash                |  2 ++
> >  package/meson/meson.mk                  | 31 +++++++++++++++++++++++++++++++
> >  3 files changed, 48 insertions(+)
> >  create mode 100644 package/meson/cross-compilation.conf.in
> >  create mode 100644 package/meson/meson.hash
> >  create mode 100644 package/meson/meson.mk
> >
> > diff --git a/package/meson/cross-compilation.conf.in b/package/meson/cross-compilation.conf.in
> > new file mode 100644
> > index 0000000000..d38fbb03cc
> > --- /dev/null
> > +++ b/package/meson/cross-compilation.conf.in
>
> And what about host packages that use meson?

Good question. I don't know about host packages that may switch to
Meson. But, out of curiosity, I'll try with a dummy package to see how
it would behave.

> > @@ -0,0 +1,15 @@
> > +# Note: in Meson terminology, what Buildroot calls the "host" system is the
> > +# "build" system and the "target" system is called the "host" system.
>
> Yeah, pretty confusing, isn't it? Buildroot is wrong here, but since
> we've been wrong for almost two decades now, we can't really change...
>
> I'd still suggest a little rephrasing:
>
>     # Note: Buildroot's and Meson's terminologies differ about the meaning
>     # of 'build', 'host' and 'target':
>     # - Buildroot's 'host' is Meson's 'build'
>     # - Buildroot's 'target' is Meson's 'host'

Looks sensible to me.

> Regards,
> Yann E. MORIN.
>
> > +[binaries]
> > +c = '@TARGET_CROSS at gcc'
> > +cpp = '@TARGET_CROSS at g++'
> > +ar = '@TARGET_CROSS at ar'
> > +strip = '@TARGET_CROSS at strip'
> > +pkgconfig = '@HOST_DIR@/usr/bin/pkg-config'
> > +
> > +[host_machine]
> > +system = 'linux'
> > +cpu_family ='@TARGET_ARCH@'
> > +cpu = '@TARGET_CPU@'
> > +endian = '@TARGET_ENDIAN@'
> > diff --git a/package/meson/meson.hash b/package/meson/meson.hash
> > new file mode 100644
> > index 0000000000..7f0de1d437
> > --- /dev/null
> > +++ b/package/meson/meson.hash
> > @@ -0,0 +1,2 @@
> > +# Locally generated
> > +sha256  074dd24fd068be0893e2e45bcc35c919d8e12777e9d6a7efdf72d4dc300867ca  meson-0.41.2.tar.gz
> > diff --git a/package/meson/meson.mk b/package/meson/meson.mk
> > new file mode 100644
> > index 0000000000..e9f1ffe4d4
> > --- /dev/null
> > +++ b/package/meson/meson.mk
> > @@ -0,0 +1,31 @@
> > +################################################################################
> > +#
> > +# meson
> > +#
> > +################################################################################
> > +
> > +MESON_VERSION = 0.41.2
> > +MESON_SITE = https://github.com/mesonbuild/meson/releases/download/$(MESON_VERSION)
> > +MESON_LICENSE = Apache-2.0
> > +MESON_LICENSE_FILES = COPYING
> > +MESON_SETUP_TYPE = setuptools
> > +
> > +HOST_MESON_DEPENDENCIES = host-ninja
> > +HOST_MESON_NEEDS_HOST_PYTHON = python3
> > +
> > +HOST_MESON_TARGET_ENDIAN = $(shell echo $(BR2_ENDIAN) | tr 'A-Z' 'a-z')
> > +
> > +define HOST_MESON_INSTALL_CROSS_CONF
> > +	mkdir -p $(HOST_DIR)/etc/meson
> > +	sed -e 's;@TARGET_CROSS@;$(TARGET_CROSS);g' \
> > +	    -e 's;@TARGET_ARCH@;$(ARCH);g' \
> > +	    -e 's;@TARGET_CPU@;$(BR2_GCC_TARGET_CPU);g' \
> > +	    -e 's;@TARGET_ENDIAN@;$(HOST_MESON_TARGET_ENDIAN);g' \
> > +	    -e 's;@HOST_DIR@;$(HOST_DIR);g' \
> > +	    $(HOST_MESON_PKGDIR)/cross-compilation.conf.in \
> > +	    > $(HOST_DIR)/etc/meson/cross-compilation.conf
> > +endef
> > +
> > +HOST_MESON_POST_INSTALL_HOOKS += HOST_MESON_INSTALL_CROSS_CONF
> > +
> > +$(eval $(host-python-package))
> > --
> > 2.13.3
> >

Regards,

--
ELB