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{ lib, stdenv, echo_build_heading, noisily, makeDeps, rust }:
{ crateName,
dependencies,
crateFeatures, crateRenames, libName, release, libPath,
crateType, metadata, crateBin, hasCrateBin,
extraRustcOpts, verbose, colors }:
let
deps = makeDeps dependencies crateRenames;
rustcOpts =
lib.foldl' (opts: opt: opts + " " + opt)
(if release then "-C opt-level=3" else "-C debuginfo=2")
(["-C codegen-units=$NIX_BUILD_CORES"] ++ extraRustcOpts);
rustcMeta = "-C metadata=${metadata} -C extra-filename=-${metadata}";
in ''
runHook preBuild
${echo_build_heading colors}
${noisily colors verbose}
build_lib() {
lib_src=$1
echo_build_heading $lib_src ${libName}
noisily rustc --crate-name $CRATE_NAME $lib_src \
${lib.strings.concatStrings (map (x: " --crate-type ${x}") crateType)} \
${rustcOpts} ${rustcMeta} ${crateFeatures} --out-dir target/lib \
--emit=dep-info,link -L dependency=target/deps ${deps} --cap-lints allow \
$BUILD_OUT_DIR $EXTRA_BUILD $EXTRA_FEATURES --color ${colors}
EXTRA_LIB=" --extern $CRATE_NAME=target/lib/lib$CRATE_NAME-${metadata}.rlib"
if [ -e target/deps/lib$CRATE_NAME-${metadata}${stdenv.hostPlatform.extensions.sharedLibrary} ]; then
EXTRA_LIB="$EXTRA_LIB --extern $CRATE_NAME=target/lib/lib$CRATE_NAME-${metadata}${stdenv.hostPlatform.extensions.sharedLibrary}"
fi
}
build_bin() {
crate_name=$1
crate_name_=$(echo $crate_name | sed -e "s/-/_/g")
main_file=""
if [[ ! -z $2 ]]; then
main_file=$2
fi
echo_build_heading $@
noisily rustc --crate-name $crate_name_ $main_file --crate-type bin ${rustcOpts}\
${crateFeatures} --out-dir target/bin --emit=dep-info,link -L dependency=target/deps \
$LINK ${deps}$EXTRA_LIB --cap-lints allow \
$BUILD_OUT_DIR $EXTRA_BUILD $EXTRA_FEATURES --color ${colors} \
${if stdenv.hostPlatform != stdenv.buildPlatform then "--target ${rust.toRustTarget stdenv.hostPlatform} -C linker=${stdenv.hostPlatform.config}-gcc" else ""}
if [ "$crate_name_" != "$crate_name" ]; then
mv target/bin/$crate_name_ target/bin/$crate_name
fi
}
EXTRA_LIB=""
CRATE_NAME=$(echo ${libName} | sed -e "s/-/_/g")
if [[ -e target/link_ ]]; then
EXTRA_BUILD="$(cat target/link_) $EXTRA_BUILD"
fi
if [[ -e "${libPath}" ]]; then
build_lib ${libPath}
elif [[ -e src/lib.rs ]]; then
build_lib src/lib.rs
elif [[ -e src/${libName}.rs ]]; then
build_lib src/${libName}.rs
fi
echo "$EXTRA_LINK_SEARCH" | while read i; do
if [[ ! -z "$i" ]]; then
for library in $i; do
echo "-L $library" >> target/link
L=$(echo $library | sed -e "s#$(pwd)/target/build#$lib/lib#")
echo "-L $L" >> target/link.final
done
fi
done
echo "$EXTRA_LINK" | while read i; do
if [[ ! -z "$i" ]]; then
for library in $i; do
echo "-l $library" >> target/link
echo "-l $library" >> target/link.final
done
fi
done
if [[ -e target/link ]]; then
sort -u target/link.final > target/link.final.sorted
mv target/link.final.sorted target/link.final
sort -u target/link > target/link.sorted
mv target/link.sorted target/link
tr '\n' ' ' < target/link > target/link_
LINK=$(cat target/link_)
fi
${lib.optionalString (crateBin != "") ''
printf "%s\n" "${crateBin}" | head -n1 | tr -s ',' '\n' | while read -r BIN_NAME BIN_PATH; do
mkdir -p target/bin
# filter empty entries / empty "lines"
if [[ -z "$BIN_NAME" ]]; then
continue
fi
if [[ -z "$BIN_PATH" ]]; then
# heuristic to "guess" the correct source file as found in cargo:
# https://github.com/rust-lang/cargo/blob/90fc9f620190d5fa3c80b0c8c65a1e1361e6b8ae/src/cargo/util/toml/targets.rs#L308-L325
# the first two cases are the "new" default IIRC
BIN_NAME_=$(echo $BIN_NAME | sed -e 's/-/_/g')
FILES=( "src/bin/$BIN_NAME.rs" "src/bin/$BIN_NAME/main.rs" "src/bin/$BIN_NAME_.rs" "src/bin/$BIN_NAME_/main.rs" "src/bin/main.rs" "src/main.rs" )
if ! [ -e "${libPath}" -o -e src/lib.rs -o -e "src/${libName}.rs" ]; then
# if this is not a library the following path is also valid
FILES=( "src/$BIN_NAME.rs" "src/$BIN_NAME_.rs" "''${FILES[@]}" )
fi
for file in "''${FILES[@]}";
do
echo "checking file $file"
# first file that exists wins
if [[ -e "$file" ]]; then
BIN_PATH="$file"
break
fi
done
if [[ -z "$BIN_PATH" ]]; then
echo "failed to find file for binary target: $BIN_NAME" >&2
exit 1
fi
fi
build_bin "$BIN_NAME" "$BIN_PATH"
done
''}
${lib.optionalString (crateBin == "" && !hasCrateBin) ''
if [[ -e src/main.rs ]]; then
mkdir -p target/bin
build_bin ${crateName} src/main.rs
fi
for i in src/bin/*.rs; do #*/
mkdir -p target/bin
build_bin "$(basename $i .rs)" "$i"
done
''}
# Remove object files to avoid "wrong ELF type"
find target -type f -name "*.o" -print0 | xargs -0 rm -f
runHook postBuild
''
|