matio: avoid ac_cv_av_copy check to fix cross building

Set ac_cv_av_copy to indicate the av_copy function exists.
The function should exist in C99 implementations.

Add passthru tests and update script.
Remove use of pname.
Reduce scope of lib.
Add myself as maintainer.

pkgs/by-name/ma/matio/package.nix

@@ -1,7 +1,14 @@
 {
   fetchurl,
+  hdf5,
   lib,
+  matio,
+  nix-update-script,
+  pkgconf,
   stdenv,
+  testers,
+  validatePkgConfig,
+  zlib,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -13,13 +20,39 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-naaYk0ohVprwWOY0hWRmb0UCnmwrCHjKDY+WCb93uNg=";
   };
 
+  configureFlags = [ "ac_cv_va_copy=1" ];
+
+  nativeBuildInputs = [
+    pkgconf
+    validatePkgConfig
+  ];
+
+  buildInputs = [
+    hdf5
+    zlib
+  ];
+
+  passthru = {
+    tests = {
+      pkg-config = testers.hasPkgConfigModules {
+        package = matio;
+        versionCheck = true;
+      };
+      version = testers.testVersion {
+        package = matio;
+      };
+    };
+    updateScript = nix-update-script { };
+  };
+
   meta = {
     changelog = "https://sourceforge.net/p/matio/news/";
     description = "C library for reading and writing Matlab MAT files";
     homepage = "http://matio.sourceforge.net/";
     license = lib.licenses.bsd2;
-    maintainers = [ ];
+    maintainers = with lib.maintainers; [ jwillikers ];
     mainProgram = "matdump";
     platforms = lib.platforms.all;
+    pkgConfigModules = [ "matio" ];
   };
 })