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{ callPackage
, cmake
, fetchFromGitHub
, lib
, protobuf
, python3
, stdenv
, buildPackages
, mallocBuild ? false
}:
stdenv.mkDerivation rec {
pname = "nanopb";
version = "0.4.6";
src = fetchFromGitHub {
owner = pname;
repo = pname;
rev = version;
sha256 = "sha256-B9J+GkgOBR4iZaP6/2ykcjbkifoyhkuukkjK/CLBZj0=";
};
nativeBuildInputs = [ cmake python3 python3.pkgs.wrapPython ];
pythonPath = with python3.pkgs; [ python3.pkgs.protobuf six ];
cmakeFlags = [
"-DBUILD_SHARED_LIBS=ON" # generate $out/lib/libprotobuf-nanopb.so{.0,}
"-DBUILD_STATIC_LIBS=ON" # generate $out/lib/libprotobuf-nanopb.a
"-Dnanopb_PROTOC_PATH=${buildPackages.protobuf}/bin/protoc"
] ++ lib.optional mallocBuild "-DCMAKE_C_FLAGS=-DPB_ENABLE_MALLOC 1";
postInstall = ''
mkdir -p $out/share/nanopb/generator/proto
cp ../generator/proto/nanopb.proto $out/share/nanopb/generator/proto/nanopb.proto
cp ../pb_common.c ../pb_decode.c ../pb_encode.c $out/include/
'';
postFixup = ''
wrapPythonPrograms
'';
passthru.tests = {
simple-proto2 = callPackage ./test-simple-proto2 {};
simple-proto3 = callPackage ./test-simple-proto3 {};
message-with-annotations = callPackage ./test-message-with-annotations {};
message-with-options = callPackage ./test-message-with-options {};
};
meta = with lib; {
inherit (protobuf.meta) platforms;
description = "Protocol Buffers with small code size";
homepage = "https://jpa.kapsi.fi/nanopb/";
license = licenses.zlib;
maintainers = with maintainers; [ kalbasit ];
longDescription = ''
Nanopb is a small code-size Protocol Buffers implementation in ansi C. It
is especially suitable for use in microcontrollers, but fits any memory
restricted system.
- Homepage: jpa.kapsi.fi/nanopb
- Documentation: jpa.kapsi.fi/nanopb/docs
- Downloads: jpa.kapsi.fi/nanopb/download
- Forum: groups.google.com/forum/#!forum/nanopb
In order to use the nanopb options in your proto files, you'll need to
tell protoc where to find the nanopb.proto file.
You can do so with the --proto_path (-I) option to add the directory
''${nanopb}/share/nanopb/generator/proto like so:
protoc --proto_path=. --proto_path=''${nanopb}/share/nanopb/generator/proto --plugin=protoc-gen-nanopb=''${nanopb}/bin/protoc-gen-nanopb --nanopb_out=out file.proto
'';
};
}
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