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cargo.bbclass: ensure extra RUSTFLAGS are properly passed

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The RUSTFLAGS env var overrides the rustflags specified in the cargo
config so we need to take anything passed in the environment variable
and put it in the config.
This commit is contained in:
Doug Goldstein
2016-11-23 14:03:58 -06:00
parent 4e1bda643e
commit 5afc0cc471
2 changed files with 19 additions and 8 deletions
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23
classes/cargo.bbclass
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@@ -49,14 +49,20 @@ replace-with = "local"
registry = "https://github.com/rust-lang/crates.io-index"
EOF
# We need to use the real Yocto linker and get the linker
# flags to it. Yocto has the concept of BUILD and TARGET
# and uses HOST to be the currently selected one. However
# LDFLAGS and TOOLCHAIN_OPTIONS are not prefixed with HOST
echo "[build]" >> ${CARGO_HOME}/config
echo "rustflags = ['-C', 'link-args=${LDFLAGS}${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}']" >> ${CARGO_HOME}/config
echo "[target.${RUST_HOST_SYS}]" >> ${CARGO_HOME}/config
echo "linker = '${HOST_PREFIX}gcc'" >> ${CARGO_HOME}/config
# We need to use the real Yocto linker and get the linker
# flags to it. Yocto has the concept of BUILD and TARGET
# and uses HOST to be the currently selected one. However
# LDFLAGS and TOOLCHAIN_OPTIONS are not prefixed with HOST
echo "[build]" >> ${CARGO_HOME}/config
echo "rustflags = [" >> ${CARGO_HOME}/config
echo "'-C'," >> ${CARGO_HOME}/config
echo "'link-args=${LDFLAGS}${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}'," >> ${CARGO_HOME}/config
for p in ${RUSTFLAGS}; do
printf "'%s'\n" "$p"
done | sed -e 's/$/,/' >> ${CARGO_HOME}/config
echo "]" >> ${CARGO_HOME}/config
echo "[target.${RUST_HOST_SYS}]" >> ${CARGO_HOME}/config
echo "linker = '${HOST_PREFIX}gcc'" >> ${CARGO_HOME}/config
}
# All the rust & cargo ecosystem assume that CC, LD, etc are a path to a single
@@ -75,6 +81,7 @@ CARGO_BUILD_FLAGS = "-v --target ${HOST_SYS} --release"
# change if CARGO_BUILD_FLAGS changes.
CARGO_TARGET_SUBDIR="${HOST_SYS}/release"
oe_cargo_build () {
unset RUSTFLAGS
bbnote "cargo = $(which cargo)"
bbnote "rustc = $(which rustc)"
bbnote "${CARGO} build ${CARGO_BUILD_FLAGS} $@"