diff options
Diffstat (limited to 'pkgs/build-support/rust/build-rust-crate/configure-crate.nix')
-rw-r--r-- | pkgs/build-support/rust/build-rust-crate/configure-crate.nix | 60 |
1 files changed, 45 insertions, 15 deletions
diff --git a/pkgs/build-support/rust/build-rust-crate/configure-crate.nix b/pkgs/build-support/rust/build-rust-crate/configure-crate.nix index 013b99a77b4b2..61c39c6b21c0c 100644 --- a/pkgs/build-support/rust/build-rust-crate/configure-crate.nix +++ b/pkgs/build-support/rust/build-rust-crate/configure-crate.nix @@ -56,32 +56,63 @@ in '' i=$1 ln -s -f $i/lib/*.rlib $2 #*/ ln -s -f $i/lib/*.so $i/lib/*.dylib $2 #*/ - if [ -e "$i/lib/link" ]; then - cat $i/lib/link >> target/link - cat $i/lib/link >> target/link.final - fi 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 + symlink_dependency $i target/buildDeps + if [ -e "$i/lib/link" ]; then + cat $i/lib/link >> target/link.build + fi done - if [[ -e target/link ]]; then - sort -u target/link > target/link.sorted - mv target/link.sorted target/link - sort -u target/link.final > target/link.final.sorted - mv target/link.final.sorted target/link.final - tr '\n' ' ' < target/link > target/link_ + + # Remove duplicate linker flags from the build dependencies. + if [[ -e target/link.build ]]; then + sort -uo target/link.build target/link.build fi + + # Remove duplicate linker flags from the dependencies. + sort -uo target/link target/link + tr '\n' ' ' < target/link > target/link_ + + # Remove duplicate linker flags from the that are written + # to the derivation's output. + sort -uo target/link.final target/link.final + EXTRA_BUILD="" BUILD_OUT_DIR="" export CARGO_PKG_NAME=${crateName} @@ -120,15 +151,14 @@ in '' 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_ ]; then - EXTRA_BUILD_FLAGS=$(cat target/link_) - fi if [ -e target/link.build ]; then - EXTRA_BUILD_FLAGS="$EXTRA_BUILD_FLAGS $(cat target/link.build)" + EXTRA_BUILD_FLAGS="$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 \ |