diff options
Diffstat (limited to 'nixpkgs/pkgs/build-support/rust/build-rust-crate/lib.sh')
| -rw-r--r-- | nixpkgs/pkgs/build-support/rust/build-rust-crate/lib.sh | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/build-support/rust/build-rust-crate/lib.sh b/nixpkgs/pkgs/build-support/rust/build-rust-crate/lib.sh new file mode 100644 index 000000000000..0181ae432c85 --- /dev/null +++ b/nixpkgs/pkgs/build-support/rust/build-rust-crate/lib.sh @@ -0,0 +1,182 @@ +echo_build_heading() { + if (( $# == 1 )); then + echo_colored "Building $1" + else + echo_colored "Building $1 ($2)" + fi +} + +build_lib() { + lib_src=$1 + echo_build_heading $lib_src ${libName} + + noisily rustc \ + --crate-name $CRATE_NAME \ + $lib_src \ + --out-dir target/lib \ + -L dependency=target/deps \ + --cap-lints allow \ + $LINK \ + $EXTRA_LINK_ARGS \ + $EXTRA_LINK_ARGS_LIB \ + $LIB_RUSTC_OPTS \ + $BUILD_OUT_DIR \ + $EXTRA_BUILD \ + $EXTRA_FEATURES \ + $EXTRA_RUSTC_FLAGS \ + --color $colors + + EXTRA_LIB=" --extern $CRATE_NAME=target/lib/lib$CRATE_NAME-$metadata.rlib" + if [ -e target/deps/lib$CRATE_NAME-$metadata$LIB_EXT ]; then + EXTRA_LIB="$EXTRA_LIB --extern $CRATE_NAME=target/lib/lib$CRATE_NAME-$metadata$LIB_EXT" + fi +} + +build_bin() { + local crate_name=$1 + local crate_name_=$(echo $crate_name | tr '-' '_') + local main_file="" + + if [[ ! -z $2 ]]; then + main_file=$2 + fi + echo_build_heading $@ + noisily rustc \ + --crate-name $crate_name_ \ + $main_file \ + --crate-type bin \ + $BIN_RUSTC_OPTS \ + --out-dir target/bin \ + -L dependency=target/deps \ + $LINK \ + $EXTRA_LINK_ARGS \ + $EXTRA_LINK_ARGS_BINS \ + $EXTRA_LIB \ + --cap-lints allow \ + $BUILD_OUT_DIR \ + $EXTRA_BUILD \ + $EXTRA_FEATURES \ + $EXTRA_RUSTC_FLAGS \ + --color ${colors} \ + + if [ "$crate_name_" != "$crate_name" ]; then + mv target/bin/$crate_name_ target/bin/$crate_name + fi +} + +build_lib_test() { + local file="$1" + EXTRA_RUSTC_FLAGS="--test $EXTRA_RUSTC_FLAGS" build_lib "$1" "$2" +} + +build_bin_test() { + local crate="$1" + local file="$2" + EXTRA_RUSTC_FLAGS="--test $EXTRA_RUSTC_FLAGS" build_bin "$1" "$2" +} + +build_bin_test_file() { + local file="$1" + local derived_crate_name="${file//\//_}" + # Make sure to strip the top level `tests` directory: see #204051. Note that + # a forward slash has now become an underscore due to the substitution + # above. + derived_crate_name=${derived_crate_name#"tests_"} + derived_crate_name="${derived_crate_name%.rs}" + build_bin_test "$derived_crate_name" "$file" +} + +# Add additional link options that were provided by the build script. +setup_link_paths() { + EXTRA_LIB="" + if [[ -e target/link_ ]]; then + EXTRA_BUILD="$(cat target/link_) $EXTRA_BUILD" + fi + + echo "$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_LIBS" | while read i; do + if [[ ! -z "$i" ]]; then + for library in $i; do + echo "-l $library" >> target/link + done + fi + done + + if [[ -e target/link ]]; then + tr '\n' ' ' < target/link > target/link_ + LINK=$(cat target/link_) + fi +} + +search_for_bin_path() { + # 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 + + BIN_NAME=$1 + BIN_NAME_=$(echo $BIN_NAME | tr '-' '_') + + # the first two cases are the "new" default IIRC + FILES=( "src/bin/$BIN_NAME.rs" "src/bin/$BIN_NAME/main.rs" "src/bin/$BIN_NAME_.rs" "src/bin/$BIN_NAME_/main.rs" "src/bin/main.rs" "src/main.rs" ) + + if ! [ -e "$LIB_PATH" -o -e src/lib.rs -o -e "src/$LIB_NAME.rs" ]; then + # if this is not a library the following path is also valid + FILES=( "src/$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_error "ERROR: failed to find file for binary target: $BIN_NAME" >&2 + exit 1 + fi +} + +# Extracts cargo_toml_path of the matching crate. +matching_cargo_toml_path() { + local manifest_path="$1" + local expected_crate_name="$2" + + # If the Cargo.toml is not a workspace root, + # it will only contain one package in ".packages" + # because "--no-deps" suppressed dependency resolution. + # + # But to make it more general, we search for a matching + # crate in all packages and use the manifest path that + # is referenced there. + cargo metadata --no-deps --format-version 1 \ + --manifest-path "$manifest_path" \ + | jq -r '.packages[] + | select( .name == "'$expected_crate_name'") + | .manifest_path' +} + +# Find a Cargo.toml in the current or any sub directory +# with a matching crate name. +matching_cargo_toml_dir() { + local expected_crate_name="$1" + + find -L -name Cargo.toml | sort | while read manifest_path; do + echo "...checking manifest_path $manifest_path" >&2 + local matching_path="$(matching_cargo_toml_path "$manifest_path" "$expected_crate_name")" + if [ -n "${matching_path}" ]; then + echo "$(dirname $matching_path)" + break + fi + done +} |