[Buildroot] [PATCHv2] package/meson: fix malformed cross-compilation.conf.in

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

Adam, All,

On 2017-12-31 16:04 -0500, Adam Duskett spake thusly:
> On Sat, Dec 30, 2017 at 4:56 AM, Yann E. MORIN <yann.morin.1998@free.fr> wrote:
> > Currently, meson will set the c_link_args and the cpp_link_args to the
> > value of TARGET_LDFLAGS, even when it's not defined.
> >
> > This creates a malformed array ["",] which will break any package
> > building using meson/ninja.
> >
> > We fix that by using an empty replacement when the corresponding values
> > are empty.
> >
> > Reported-by: Adam Duskett <Adamduskett@outlook.com>
> > Signed-off-by: Adam Duskett <Adamduskett@outlook.com>
> > [yann.morin.1998 at free.fr: alternate implementation, suggested by Thomas]
> > Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
> > Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> > ---
> >  package/meson/meson.mk | 10 +++++++---
> >  1 file changed, 7 insertions(+), 3 deletions(-)
> >
> > diff --git a/package/meson/meson.mk b/package/meson/meson.mk
> > index 55ce84da07..d55c3c7c00 100644
> > --- a/package/meson/meson.mk
> > +++ b/package/meson/meson.mk
> > @@ -16,15 +16,19 @@ HOST_MESON_NEEDS_HOST_PYTHON = python3
> >  HOST_MESON_TARGET_ENDIAN = $(call LOWERCASE,$(BR2_ENDIAN))
> >  HOST_MESON_TARGET_CPU = $(call qstrip,$(BR2_GCC_TARGET_CPU))
> >
> > +HOST_MESON_SED_CFLAGS = $(if $(TARGET_CFLAGS),`printf '"%s"$(comma) ' $(TARGET_CFLAGS)`)
> > +HOST_MESON_SED_LDFLAGS = $(if $(TARGET_LDFLAGS),`printf '"%s"$(comma) ' $(TARGET_LDFLAGS)`)
> > +HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARGET_CXXFLAGS)`)
> > +
> >  define HOST_MESON_INSTALL_CROSS_CONF
> >         mkdir -p $(HOST_DIR)/etc/meson
> >         sed -e "s%@TARGET_CROSS@%$(TARGET_CROSS)%g" \
> >             -e "s%@TARGET_ARCH@%$(ARCH)%g" \
> >             -e "s%@TARGET_CPU@%$(HOST_MESON_TARGET_CPU)%g" \
> >             -e "s%@TARGET_ENDIAN@%$(HOST_MESON_TARGET_ENDIAN)%g" \
> > -           -e "s%@TARGET_CFLAGS@%`printf '"%s", ' $(TARGET_CFLAGS)`%g" \
> > -           -e "s%@TARGET_LDFLAGS@%`printf '"%s", ' $(TARGET_LDFLAGS)`%g" \
> > -           -e "s%@TARGET_CXXFLAGS@%`printf '"%s", ' $(TARGET_CXXFLAGS)`%g" \
> > +           -e "s%@TARGET_CFLAGS@%$(HOST_MESON_SED_CFLAGS)%g" \
> > +           -e "s%@TARGET_LDFLAGS@%$(HOST_MESON_SED_LDFLAGS)%g" \
> > +           -e "s%@TARGET_CXXFLAGS@%$(HOST_MESON_SED_CXXFLAGS)%g" \
> >             -e "s%@HOST_DIR@%$(HOST_DIR)%g" \
> >             $(HOST_MESON_PKGDIR)/cross-compilation.conf.in \
> >             > $(HOST_DIR)/etc/meson/cross-compilation.conf

> Tested and works well. This needs to be pushed before I can send a
> systemd patch.

To report testing success, one just replies with something like (with no
indentation):

    Tested-by: You you at there

This way this gets picked up by patchwork, and reported as such:
    https://patchwork.ozlabs.org/project/buildroot/list/

Regards,
Yann E. MORIN.

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