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{ lib, stdenv, echo_colored, noisily, mkRustcDepArgs }:
{ build
, buildDependencies
, colors
, completeBuildDeps
, completeDeps
, crateAuthors
, crateDescription
, crateHomepage
, crateFeatures
, crateName
, crateRenames
, crateVersion
, extraLinkFlags
, extraRustcOpts
, libName
, libPath
, release
, target_os
, verbose
, workspace_member }:
let version_ = lib.splitString "-" crateVersion;
versionPre = if lib.tail version_ == [] then "" else lib.elemAt version_ 1;
version = lib.splitVersion (lib.head version_);
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);
buildDeps = mkRustcDepArgs buildDependencies crateRenames;
authors = lib.concatStringsSep ":" crateAuthors;
optLevel = if release then 3 else 0;
completeDepsDir = lib.concatStringsSep " " completeDeps;
completeBuildDepsDir = lib.concatStringsSep " " completeBuildDeps;
in ''
${echo_colored colors}
${noisily colors verbose}
source ${./lib.sh}
${lib.optionalString (workspace_member != null) ''
noisily cd "${workspace_member}"
''}
${lib.optionalString (workspace_member == null) ''
echo_colored "Searching for matching Cargo.toml (${crateName})"
local cargo_toml_dir=$(matching_cargo_toml_dir "${crateName}")
if [ -z "$cargo_toml_dir" ]; then
echo_error "ERROR configuring ${crateName}: No matching Cargo.toml in $(pwd) found." >&2
exit 23
fi
noisily cd "$cargo_toml_dir"
''}
runHook preConfigure
symlink_dependency() {
# $1 is the nix-store path of a dependency
# $2 is the target path
i=$1
ln -s -f $i/lib/*.rlib $2 #*/
ln -s -f $i/lib/*.so $i/lib/*.dylib $2 #*/
if [ -e $i/env ]; then
source $i/env
fi
}
# The following steps set up the dependencies of the crate. Two
# kinds of dependencies are distinguished: build dependencies
# (used by the build script) and crate dependencies. For each
# dependency we have to:
#
# - Make its Rust library available to rustc. This is done by
# symlinking all library dependencies into a directory that
# can be provided to rustc.
# - Accumulate linking flags. These flags are largely used for
# linking native libraries.
#
# The crate link flags are added to the `link` and `link.final`
# files. The `link` file is used for linkage in the current
# crate. The `link.final` file will be copied to the output and can
# be used by downstream crates to get the linker flags of this
# crate.
mkdir -p target/{deps,lib,build,buildDeps}
chmod uga+w target -R
echo ${extraLinkFlags} > target/link
echo ${extraLinkFlags} > target/link.final
# Prepare crate dependencies
for i in ${completeDepsDir}; do
symlink_dependency $i target/deps
if [ -e "$i/lib/link" ]; then
cat $i/lib/link >> target/link
cat $i/lib/link >> target/link.final
fi
done
# Prepare crate build dependencies that are used for the build script.
for i in ${completeBuildDepsDir}; do
symlink_dependency $i target/buildDeps
if [ -e "$i/lib/link" ]; then
cat $i/lib/link >> target/link.build
fi
done
# Remove duplicate linker flags from the build dependencies.
if [[ -e target/link.build ]]; then
sort -uo target/link.build target/link.build
fi
# Remove duplicate linker flags from the dependencies.
sort -uo target/link target/link
tr '\n' ' ' < target/link > target/link_
# Remove duplicate linker flags from the that are written
# to the derivation's output.
sort -uo target/link.final target/link.final
EXTRA_BUILD=""
BUILD_OUT_DIR=""
export CARGO_PKG_NAME=${crateName}
export CARGO_PKG_VERSION=${crateVersion}
export CARGO_PKG_AUTHORS="${authors}"
export CARGO_PKG_DESCRIPTION="${crateDescription}"
export CARGO_CFG_TARGET_ARCH=${stdenv.hostPlatform.parsed.cpu.name}
export CARGO_CFG_TARGET_OS=${target_os}
export CARGO_CFG_TARGET_FAMILY="unix"
export CARGO_CFG_UNIX=1
export CARGO_CFG_TARGET_ENV="gnu"
export CARGO_CFG_TARGET_ENDIAN=${if stdenv.hostPlatform.parsed.cpu.significantByte.name == "littleEndian" then "little" else "big"}
export CARGO_CFG_TARGET_POINTER_WIDTH=${toString stdenv.hostPlatform.parsed.cpu.bits}
export CARGO_CFG_TARGET_VENDOR=${stdenv.hostPlatform.parsed.vendor.name}
export CARGO_MANIFEST_DIR=$(pwd)
export DEBUG="${toString (!release)}"
export OPT_LEVEL="${toString optLevel}"
export TARGET="${stdenv.hostPlatform.config}"
export HOST="${stdenv.hostPlatform.config}"
export PROFILE=${if release then "release" else "debug"}
export OUT_DIR=$(pwd)/target/build/${crateName}.out
export CARGO_PKG_VERSION_MAJOR=${lib.elemAt version 0}
export CARGO_PKG_VERSION_MINOR=${lib.elemAt version 1}
export CARGO_PKG_VERSION_PATCH=${lib.elemAt version 2}
export CARGO_PKG_VERSION_PRE="${versionPre}"
export CARGO_PKG_HOMEPAGE="${crateHomepage}"
export NUM_JOBS=1
export RUSTC="rustc"
export RUSTDOC="rustdoc"
BUILD=""
if [[ ! -z "${build}" ]] ; then
BUILD=${build}
elif [[ -e "build.rs" ]]; then
BUILD="build.rs"
fi
# Compile and run the build script, when available.
if [[ ! -z "$BUILD" ]] ; then
echo_build_heading "$BUILD" ${libName}
mkdir -p target/build/${crateName}
EXTRA_BUILD_FLAGS=""
if [ -e target/link.build ]; then
EXTRA_BUILD_FLAGS="$EXTRA_BUILD_FLAGS $(tr '\n' ' ' < target/link.build)"
fi
noisily rustc --crate-name build_script_build $BUILD --crate-type bin ${rustcOpts} \
${crateFeatures} --out-dir target/build/${crateName} --emit=dep-info,link \
-L dependency=target/buildDeps ${buildDeps} --cap-lints allow $EXTRA_BUILD_FLAGS --color ${colors}
mkdir -p target/build/${crateName}.out
export RUST_BACKTRACE=1
BUILD_OUT_DIR="-L $OUT_DIR"
mkdir -p $OUT_DIR
target/build/${crateName}/build_script_build > target/build/${crateName}.opt
set +e
EXTRA_BUILD=$(sed -n "s/^cargo:rustc-flags=\(.*\)/\1/p" target/build/${crateName}.opt | tr '\n' ' ' | sort -u)
EXTRA_FEATURES=$(sed -n "s/^cargo:rustc-cfg=\(.*\)/--cfg \1/p" target/build/${crateName}.opt | tr '\n' ' ')
EXTRA_LINK=$(sed -n "s/^cargo:rustc-link-lib=\(.*\)/\1/p" target/build/${crateName}.opt | tr '\n' ' ' | sort -u)
EXTRA_LINK_SEARCH=$(sed -n "s/^cargo:rustc-link-search=\(.*\)/\1/p" target/build/${crateName}.opt | tr '\n' ' ' | sort -u)
for env in $(sed -n "s/^cargo:rustc-env=\(.*\)/\1/p" target/build/${crateName}.opt); do
export $env
done
CRATENAME=$(echo ${crateName} | sed -e "s/\(.*\)-sys$/\U\1/")
grep -P "^cargo:(?!(rustc-|warning=|rerun-if-changed=|rerun-if-env-changed))" target/build/${crateName}.opt \
| sed -e "s/cargo:\([^=]*\)=\(.*\)/export DEP_$(echo $CRATENAME)_\U\1\E=\2/" > target/env
set -e
fi
runHook postConfigure
''
|