support/download: convert wget to use the wrapper

define DOWNLOAD_WGET

	test -e $(DL_DIR)/$(2) || \

	$(EXTRA_ENV) support/download/wget '$(call qstrip,$(1))' $(DL_DIR)/$(2) && \

	$(EXTRA_ENV) support/download/wrapper wget \

		$(DL_DIR)/$(2) \

		'$(call qstrip,$(1))' && \

	$(call VERIFY_HASH,$(PKGDIR)/$($(PKG)_NAME).hash,$(DL_DIR)/$(2))

endef

#!/bin/bash

# We want to catch any command failure, and exit immediately

# We want to catch any unexpected failure, and exit immediately

set -e

# Download helper for wget

# Call it with:

#   $1: URL

#   $2: output file

# Download helper for wget, to be called from the download wrapper script

# Expected arguments:

#   $1: output file

#   $2: URL

# And this environment:

#   WGET     : the wget command to call

#   BUILD_DIR: path to Buildroot's build dir

url="${1}"

output="${2}"

output="${1}"

url="${2}"

tmp_dl="$( mktemp "${BUILD_DIR}/.XXXXXX" )"

tmp_output="$( mktemp "${output}.XXXXXX" )"

# Play tic-tac-toe with temp files

# - first, we download to a trashable location (the build-dir)

# - then we copy to a temporary tarball in the final location, so it is

#   on the same filesystem as the final file

# - finally, we atomically rename to the final file

ret=1

if ${WGET} -O "${tmp_dl}" "${url}"; then

    if mv "${tmp_dl}" "${tmp_output}"; then

        mv "${tmp_output}" "${output}"

        ret=0

    fi

fi

rm -f "${tmp_dl}" "${tmp_output}"

exit ${ret}

${WGET} -O "${output}" "${url}"