libkcapi: init at 1.4.0

Linux Kernel Crypto API User Space Interface Library. libkcapi allows user-space to access the Linux kernel crypto API.
The esdm package may include support for libkcapi in the jittentropy source in a future release. Therefor having this package upstream would be prefered.

Signed-off-by: Oliver Richter <richter-oliver@gmx.net>

pkgs/development/libraries/libkcapi/default.nix

@@ -0,0 +1,53 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, buildPackages
+  # libkcapi offers multiple tools. They can be disabled for minimization.
+, kcapi-test ? true
+, kcapi-speed ? true
+, kcapi-hasher ? true
+, kcapi-rngapp ? true
+, kcapi-encapp ? true
+, kcapi-dgstapp ? true
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libkcapi";
+  version = "1.4.0";
+
+  src = fetchFromGitHub {
+    owner = "smuellerDD";
+    repo = "libkcapi";
+    rev = "v${version}";
+    hash = "sha256-G/4G8179Gc8RfQfQImOCsBC8WXKK7jQJfUSXm0hYLJ0=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook ];
+
+  # libkcapi looks also for a host c compiler when cross-compiling
+  # otherwise you obtain following error message:
+  # "error: no acceptable C compiler found in $PATH"
+  depsBuildBuild = [
+    buildPackages.stdenv.cc
+  ];
+
+  enableParallelBuilding = true;
+
+  configureFlags =
+    lib.optional kcapi-test "--enable-kcapi-test" ++
+    lib.optional kcapi-speed "--enable-kcapi-speed" ++
+    lib.optional kcapi-hasher "--enable-kcapi-hasher" ++
+    lib.optional kcapi-rngapp "--enable-kcapi-rngapp" ++
+    lib.optional kcapi-encapp "--enable-kcapi-encapp" ++
+    lib.optional kcapi-dgstapp "--enable-kcapi-dgstapp"
+  ;
+
+  meta = {
+    homepage = "http://www.chronox.de/libkcapi.html";
+    description = "Linux Kernel Crypto API User Space Interface Library";
+    license = with lib.licenses; [ bsd3 gpl2Only ];
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ orichter thillux ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -22464,6 +22464,8 @@ with pkgs;
 
   libinklevel = callPackage ../development/libraries/libinklevel { };
 
+  libkcapi = callPackage ../development/libraries/libkcapi { };
+
   libnats-c = callPackage ../development/libraries/libnats-c { };
 
   liburing = callPackage ../development/libraries/liburing { };