frozen: init at unstable-2021-02-23

frozen is a small JSON parser and generator library,
targeted at embedded use-cases. As it only uses two
source files, add meson.build on the fly to enable
cross compilation.

Signed-off-by: Markus Theil <[e-mail]>

pkgs/development/libraries/frozen/default.nix

···
+{ lib
+, stdenv
+, fetchFromGitHub
+, meson
+, ninja
+}:
+
+stdenv.mkDerivation rec {
+  pname = "frozen";
+  # pin to a newer release if frozen releases again, see cesanta/frozen#72
+  version = "unstable-2021-02-23";
+
+  src = fetchFromGitHub {
+    owner = "cesanta";
+    repo = "frozen";
+    rev = "21f051e3abc2240d9a25b2add6629b38e963e102";
+    hash = "sha256-BpuYK9fbWSpeF8iPT8ImrV3CKKaA5RQ2W0ZQ03TciR0=";
+  };
+
+  nativeBuildInputs = [ meson ninja ];
+
+  # frozen has a simple Makefile and a GN BUILD file as building scripts.
+  # Since it has only two source files, the best course of action to support
+  # cross compilation is to create a small meson.build file.
+  # Relevant upstream issue: https://github.com/cesanta/frozen/pull/71
+  preConfigure = ''
+    cp ${./meson.build} meson.build
+  '';
+
+  meta = {
+    homepage = "https://github.com/cesanta/frozen";
+    description = "Minimal JSON parser for C, targeted for embedded systems";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ thillux ];
+    platforms = lib.platforms.unix;
+  };
+}

pkgs/development/libraries/frozen/meson.build

···
+project(
+    'frozen',
+    'c',
+    default_options: [
+        'c_args=-Wextra -fno-builtin -pedantic',
+        'c_std=c99',
+        'werror=true'
+    ],
+    license: 'Apache-2.0',
+    version: '20210223'
+)
+
+library(
+    'frozen',
+    'frozen.c',
+    install: true
+)
+
+install_headers('frozen.h')

pkgs/top-level/all-packages.nix

···
 
   fribidi = callPackage ../development/libraries/fribidi { };
 
+  frozen = callPackage ../development/libraries/frozen { };
+
   funambol = callPackage ../development/libraries/funambol { };
 
   function-runner = callPackage ../development/web/function-runner { };