[Buildroot] [PATCH 1/4] package/cross-ldd: new package

[Romain Naour]

Hello Thomas, All,

Le 08/01/2025 à 23:43, Thomas Petazzoni via buildroot a écrit :
> This commit introduces a new cross-ldd package which installs the
> cross ldd implementation that comes from Crosstool-NG, and which can
> be used like ldd, but when cross-compiling. We intend to use it as a
> replacement of host-prelink-cross for our dracut package.
> 
> The cross-ldd from Crosstool-NG is in fact even recommended by the
> Dracut documentation, in its docs/README.cross document:
> 
>    To support cross-compiled binaries, a different ldd variant is needed that
>    works on those binaries. One such ldd script is found at
>    https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f
> 
> This Github Gist in fact contains the xldd.in code from Crosstool-NG.
> 
> Our package downloads the full tarball of Crosstool-NG. We tried to
> download only the script and the license file, but we couldn't figure
> out a way of downloading them *and* have the version in the filename
> to make sure that when doing an upgrade to a newer version, we
> wouldn't have a clash between old/new files having the same name (and
> causing conflicts with the hash verification). So in the end, we opted
> for download the whole tarball.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>

I've run some runtime tests without any issue.

Applied to master, thanks.

Best regards,
Romain


> ---
>  DEVELOPERS                       |  1 +
>  package/cross-ldd/cross-ldd.hash |  4 ++++
>  package/cross-ldd/cross-ldd.mk   | 37 ++++++++++++++++++++++++++++++++
>  3 files changed, 42 insertions(+)
>  create mode 100644 package/cross-ldd/cross-ldd.hash
>  create mode 100644 package/cross-ldd/cross-ldd.mk
> 
> diff --git a/DEVELOPERS b/DEVELOPERS
> index 16b72eee08..1174100014 100644
> --- a/DEVELOPERS
> +++ b/DEVELOPERS
> @@ -3145,6 +3145,7 @@ F:	package/cifs-utils/
>  F:	package/cloop/
>  F:	package/cmake/
>  F:	package/cramfs/
> +F:	package/cross-ldd/
>  F:	package/dmidecode/
>  F:	package/double-conversion/
>  F:	package/flashrom/
> diff --git a/package/cross-ldd/cross-ldd.hash b/package/cross-ldd/cross-ldd.hash
> new file mode 100644
> index 0000000000..b179aec5e0
> --- /dev/null
> +++ b/package/cross-ldd/cross-ldd.hash
> @@ -0,0 +1,4 @@
> +# From http://crosstool-ng.org/download/crosstool-ng/crosstool-ng-1.26.0.tar.xz.sha512
> +sha512  7834184ae5792fd347455f9f48fee826248dcb82d271954ed4304b1a18f63995ff8a2c3b817564dcf147ac7e16e02d779195b26d97eb57db27f1118a1837002a  crosstool-ng-1.26.0.tar.xz
> +# Locally calculated
> +sha256  07bc0ccd386469c748c4cf6c8faca5667fbf8c4400386714287fa233acfd68ba  COPYING
> diff --git a/package/cross-ldd/cross-ldd.mk b/package/cross-ldd/cross-ldd.mk
> new file mode 100644
> index 0000000000..357133cdd2
> --- /dev/null
> +++ b/package/cross-ldd/cross-ldd.mk
> @@ -0,0 +1,37 @@
> +################################################################################
> +#
> +# cross-ldd
> +#
> +################################################################################
> +
> +CROSS_LDD_VERSION = 1.26.0
> +CROSS_LDD_SITE = http://crosstool-ng.org/download/crosstool-ng
> +CROSS_LDD_SOURCE = crosstool-ng-$(CROSS_LDD_VERSION).tar.xz
> +CROSS_LDD_LICENSE = GPL-2.0
> +CROSS_LDD_LICENSE_FILES = COPYING
> +
> +ifeq ($(BR2_ARCH_IS_64),y)
> +CROSS_LDD_BITNESS = 64
> +else
> +CROSS_LDD_BITNESS = 32
> +endif
> +
> +CROSS_LDD_TOOLS_PREFIX = $(patsubst %-,%,$(TARGET_CROSS))
> +
> +define HOST_CROSS_LDD_CONFIGURE_CMDS
> +	sed \
> +		-e "s%@@CT_bash@@%/usr/bin/env bash%" \
> +		-e "s%@@CT_VERSION@@%$(CROSS_LDD_VERSION)%" \
> +		-e "s%@@CT_BITS@@%$(CROSS_LDD_BITNESS)%" \
> +		-e "s%@@CT_sed@@%sed%" \
> +		-e "s%@@CT_grep@@%grep%" \
> +		-e "s%^prefix=.*%prefix=$(CROSS_LDD_TOOLS_PREFIX)%" \
> +		$(@D)/scripts/xldd.in > \
> +		$(@D)/scripts/xldd
> +endef
> +
> +define HOST_CROSS_LDD_INSTALL_CMDS
> +	$(INSTALL) -m 0755 -D $(@D)/scripts/xldd $(TARGET_CROSS)xldd
> +endef
> +
> +$(eval $(host-generic-package))