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

[Yann E. MORIN <yann.morin.1998@free.fr>]

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?

> @@ -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'

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
> 

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