tjh.dev
nixpkgs mirror (for testing)
github.com/NixOS/nixpkgs
nix
1{
2 lib,
3 stdenv,
4 mkRustcDepArgs,
5 mkRustcFeatureArgs,
6 needUnstableCLI,
7 rustc,
8}:
9
10{
11 crateName,
12 dependencies,
13 crateFeatures,
14 crateRenames,
15 libName,
16 release,
17 libPath,
18 crateType,
19 metadata,
20 crateBin,
21 hasCrateBin,
22 extraRustcOpts,
23 verbose,
24 colors,
25 buildTests,
26 codegenUnits,
27}:
28
29let
30 baseRustcOpts = [
31 (if release then "-C opt-level=3" else "-C debuginfo=2")
32 "-C codegen-units=${toString codegenUnits}"
33 "--remap-path-prefix=$NIX_BUILD_TOP=/"
34 (mkRustcDepArgs dependencies crateRenames)
35 (mkRustcFeatureArgs crateFeatures)
36 ]
37 ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
38 "--target"
39 stdenv.hostPlatform.rust.rustcTargetSpec
40 ]
41 ++ lib.optionals (needUnstableCLI dependencies) [
42 "-Z"
43 "unstable-options"
44 ]
45 ++ extraRustcOpts
46 # since rustc 1.42 the "proc_macro" crate is part of the default crate prelude
47 # https://github.com/rust-lang/cargo/commit/4d64eb99a4#diff-7f98585dbf9d30aa100c8318e2c77e79R1021-R1022
48 ++ lib.optional (lib.elem "proc-macro" crateType) "--extern proc_macro"
49 ++
50 lib.optional (stdenv.hostPlatform.linker == "lld" && rustc ? llvmPackages.lld) # Needed when building for targets that use lld. e.g. 'wasm32-unknown-unknown'
51 "-C linker=${rustc.llvmPackages.lld}/bin/lld"
52 ++ lib.optional (
53 stdenv.hasCC && stdenv.hostPlatform.linker != "lld"
54 ) "-C linker=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc";
55 rustcMeta = "-C metadata=${metadata} -C extra-filename=-${metadata}";
56
57 # build the final rustc arguments that can be different between different
58 # crates
59 libRustcOpts = lib.concatStringsSep " " (
60 baseRustcOpts ++ [ rustcMeta ] ++ (map (x: "--crate-type ${x}") crateType)
61 );
62
63 binRustcOpts = lib.concatStringsSep " " baseRustcOpts;
64
65 build_bin = if buildTests then "build_bin_test" else "build_bin";
66in
67''
68 runHook preBuild
69
70 # configure & source common build functions
71 LIB_RUSTC_OPTS="${libRustcOpts}"
72 BIN_RUSTC_OPTS="${binRustcOpts}"
73 LIB_EXT="${stdenv.hostPlatform.extensions.library}"
74 LIB_PATH="${libPath}"
75 LIB_NAME="${libName}"
76
77 CRATE_NAME='${lib.replaceStrings [ "-" ] [ "_" ] libName}'
78
79 setup_link_paths
80
81 if [[ -e "$LIB_PATH" ]]; then
82 build_lib "$LIB_PATH"
83 ${lib.optionalString buildTests ''build_lib_test "$LIB_PATH"''}
84 elif [[ -e src/lib.rs ]]; then
85 build_lib src/lib.rs
86 ${lib.optionalString buildTests "build_lib_test src/lib.rs"}
87 fi
88
89
90
91 ${lib.optionalString (lib.length crateBin > 0) (
92 lib.concatMapStringsSep "\n" (
93 bin:
94 let
95 haveRequiredFeature =
96 if bin ? requiredFeatures then
97 # Check that all element in requiredFeatures are also present in crateFeatures
98 lib.intersectLists bin.requiredFeatures crateFeatures == bin.requiredFeatures
99 else
100 true;
101 in
102 if haveRequiredFeature then
103 ''
104 mkdir -p target/bin
105 BIN_NAME='${bin.name or crateName}'
106 ${
107 if !bin ? path then
108 ''
109 BIN_PATH=""
110 search_for_bin_path "$BIN_NAME"
111 ''
112 else
113 ''
114 BIN_PATH='${bin.path}'
115 ''
116 }
117 ${build_bin} "$BIN_NAME" "$BIN_PATH"
118 ''
119 else
120 ''
121 echo Binary ${bin.name or crateName} not compiled due to not having all of the required features -- ${lib.escapeShellArg (builtins.toJSON bin.requiredFeatures)} -- enabled.
122 ''
123 ) crateBin
124 )}
125
126 ${lib.optionalString buildTests ''
127 # When tests are enabled build all the files in the `tests` directory as
128 # test binaries.
129 if [ -d tests ]; then
130 # find all the .rs files (or symlinks to those) in the tests directory, no subdirectories
131 find tests -maxdepth 1 \( -type f -o -type l \) -a -name '*.rs' -print0 | while IFS= read -r -d ''' file; do
132 mkdir -p target/bin
133 build_bin_test_file "$file"
134 done
135
136 # find all the subdirectories of tests/ that contain a main.rs file as
137 # that is also a test according to cargo
138 find tests/ -mindepth 1 -maxdepth 2 \( -type f -o -type l \) -a -name 'main.rs' -print0 | while IFS= read -r -d ''' file; do
139 mkdir -p target/bin
140 build_bin_test_file "$file"
141 done
142
143 fi
144 ''}
145
146 # If crateBin is empty and hasCrateBin is not set then we must try to
147 # detect some kind of bin target based on some files that might exist.
148 ${lib.optionalString (lib.length crateBin == 0 && !hasCrateBin) ''
149 if [[ -e src/main.rs ]]; then
150 mkdir -p target/bin
151 ${build_bin} ${crateName} src/main.rs
152 fi
153 for i in src/bin/*.rs; do #*/
154 mkdir -p target/bin
155 ${build_bin} "$(basename $i .rs)" "$i"
156 done
157 ''}
158 # Remove object files to avoid "wrong ELF type"
159 find target -type f -name "*.o" -print0 | xargs -0 rm -f
160 runHook postBuild
161''