[1/6] package/cargo: convert to virtual package

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
---
 package/cargo/Config.in.host | 11 ++++-
 package/cargo/cargo.mk       | 79 +-----------------------------------
 2 files changed, 11 insertions(+), 79 deletions(-)

Eric, All,

On Sun, Sep 29, 2019 at 12:17 PM Eric Le Bihan
<eric.le.bihan.dev@free.fr> wrote:
>
> Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>

Tested-by: Sam Voss <sam.voss@gmail.com>

> ---
>  package/cargo/Config.in.host | 11 ++++-
>  package/cargo/cargo.mk       | 79 +-----------------------------------
>  2 files changed, 11 insertions(+), 79 deletions(-)
>
> diff --git a/package/cargo/Config.in.host b/package/cargo/Config.in.host
> index c33c6851f2..82652fa980 100644
> --- a/package/cargo/Config.in.host
> +++ b/package/cargo/Config.in.host
> @@ -1,9 +1,16 @@
>  config BR2_PACKAGE_HOST_CARGO
>         bool "host cargo"
>         depends on BR2_PACKAGE_HOST_RUSTC_ARCH_SUPPORTS
> -       select BR2_PACKAGE_HOST_RUSTC
>         help
>           Cargo is the package manager for the Rust programming
> -         language.
> +         language
>
>           https://crates.io/
> +
> +config BR2_PACKAGE_HAS_HOST_CARGO
> +       bool
> +
> +config BR2_PACKAGE_PROVIDES_HOST_CARGO
> +       string
> +       depends on BR2_PACKAGE_HAS_HOST_CARGO
> +       depends on BR2_PACKAGE_HOST_RUSTC_ARCH_SUPPORTS
> diff --git a/package/cargo/cargo.mk b/package/cargo/cargo.mk
> index a387281b4c..54dc86d811 100644
> --- a/package/cargo/cargo.mk
> +++ b/package/cargo/cargo.mk
> @@ -4,82 +4,7 @@
>  #
>  ################################################################################
>
> -CARGO_VERSION = 0.26.0
> -CARGO_SITE = $(call github,rust-lang,cargo,$(CARGO_VERSION))
> -CARGO_LICENSE = Apache-2.0 or MIT
> -CARGO_LICENSE_FILES = LICENSE-APACHE LICENSE-MIT
> -
> -CARGO_DEPS_SHA512 = 6ed2a1644c9b18fc24ddad5350d41b6c36cd5b62de4cf0b748a57b589f4f0ac12f91461989158d58d0892bf6fc2c1626cf574e7e2b9da4b0e35f72dfd88f9048
> -CARGO_DEPS_SITE = https://src.fedoraproject.org/repo/pkgs/cargo/$(CARGO_DEPS_SOURCE)/sha512/$(CARGO_DEPS_SHA512)
> -CARGO_DEPS_SOURCE = cargo-$(CARGO_VERSION)-vendor.tar.xz
> -
> -CARGO_INSTALLER_VERSION = 4f994850808a572e2cc8d43f968893c8e942e9bf
> -CARGO_INSTALLER_SITE = $(call github,rust-lang,rust-installer,$(CARGO_INSTALLER_VERSION))
> -CARGO_INSTALLER_SOURCE = rust-installer-$(CARGO_INSTALLER_VERSION).tar.gz
> -
> -HOST_CARGO_EXTRA_DOWNLOADS = \
> -       $(CARGO_DEPS_SITE)/$(CARGO_DEPS_SOURCE) \
> -       $(CARGO_INSTALLER_SITE)/$(CARGO_INSTALLER_SOURCE)
> -
> -HOST_CARGO_DEPENDENCIES = \
> -       $(BR2_CMAKE_HOST_DEPENDENCY) \
> -       host-pkgconf \
> -       host-openssl \
> -       host-libhttpparser \
> -       host-libssh2 \
> -       host-libcurl \
> -       host-rustc \
> -       host-cargo-bin
> -
> -HOST_CARGO_SNAP_BIN = $(HOST_CARGO_BIN_DIR)/cargo/bin/cargo
> -HOST_CARGO_HOME = $(HOST_DIR)/share/cargo
> -
> -define HOST_CARGO_EXTRACT_DEPS
> -       @mkdir -p $(@D)/vendor
> -       $(call suitable-extractor,$(CARGO_DEPS_SOURCE)) \
> -               $(HOST_CARGO_DL_DIR)/$(CARGO_DEPS_SOURCE) | \
> -               $(TAR) --strip-components=1 -C $(@D)/vendor $(TAR_OPTIONS) -
> -endef
> -
> -HOST_CARGO_POST_EXTRACT_HOOKS += HOST_CARGO_EXTRACT_DEPS
> -
> -define HOST_CARGO_EXTRACT_INSTALLER
> -       @mkdir -p $(@D)/src/rust-installer
> -       $(call suitable-extractor,$(CARGO_INSTALLER_SOURCE)) \
> -               $(HOST_CARGO_DL_DIR)/$(CARGO_INSTALLER_SOURCE) | \
> -               $(TAR) --strip-components=1 -C $(@D)/src/rust-installer $(TAR_OPTIONS) -
> -endef
> -
> -HOST_CARGO_POST_EXTRACT_HOOKS += HOST_CARGO_EXTRACT_INSTALLER
> -
> -define HOST_CARGO_SETUP_DEPS
> -       mkdir -p $(@D)/.cargo
> -       ( \
> -               echo "[source.crates-io]"; \
> -               echo "registry = 'https://github.com/rust-lang/crates.io-index'"; \
> -               echo "replace-with = 'vendored-sources'"; \
> -               echo "[source.vendored-sources]"; \
> -               echo "directory = '$(@D)/vendor'"; \
> -       ) > $(@D)/.cargo/config
> -endef
> -
> -HOST_CARGO_PRE_CONFIGURE_HOOKS += HOST_CARGO_SETUP_DEPS
> -
> -HOST_CARGO_SNAP_OPTS = \
> -       --release \
> -       $(if $(VERBOSE),--verbose)
> -
> -HOST_CARGO_ENV = \
> -       RUSTFLAGS="$(addprefix -Clink-arg=,$(HOST_LDFLAGS))" \
> -       CARGO_HOME=$(HOST_CARGO_HOME)
> -
> -define HOST_CARGO_BUILD_CMDS
> -       (cd $(@D); $(HOST_MAKE_ENV) $(HOST_CARGO_ENV) $(HOST_CARGO_SNAP_BIN) \
> -               build $(HOST_CARGO_SNAP_OPTS))
> -endef
> -
> -define HOST_CARGO_INSTALL_CMDS
> -       $(INSTALL) -D -m 0755 $(@D)/target/release/cargo $(HOST_DIR)/bin/cargo
> +define HOST_CARGO_INSTALL_CONFIG
>         $(INSTALL) -D package/cargo/config.in \
>                 $(HOST_DIR)/share/cargo/config
>         $(SED) 's/@RUSTC_TARGET_NAME@/$(RUSTC_TARGET_NAME)/' \
> @@ -88,4 +13,4 @@ define HOST_CARGO_INSTALL_CMDS
>                 $(HOST_DIR)/share/cargo/config
>  endef
>
> -$(eval $(host-generic-package))
> +$(eval $(host-virtual-package))
> --
> 2.21.0
>
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On Tue, Oct 1, 2019 at 6:33 PM Sam Voss <sam.voss@gmail.com> wrote:
>
> Eric, All,
>
> On Sun, Sep 29, 2019 at 12:17 PM Eric Le Bihan
> <eric.le.bihan.dev@free.fr> wrote:
> >
> > Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
>
> Tested-by: Sam Voss <sam.voss@gmail.com>

My original tests this had no issues, but I noticed today this
patchset causes Cargo to not select rustc in any way. This causes no
providers to be selected, and propagate out a build failure. My legacy
defconfig I based on already had RUSTC selected.

» make host-cargo
make[1]: *** No rule to make target 'host-', needed by
'/accts/smvoss/project/rust/build/host-cargo/.stamp_configured'.
Stop.
make: *** [_all] Error 2
Makefile:23: recipe for target '_all' failed

This happened when only BR2_PACKAGE_HOST_CARGO is selected, leaving no
providers as each of them require either RUSTC or RUSTC_BIN.