duktape: Add pkgconfig file

pkgs/development/interpreters/duktape/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl }:
+{ lib, stdenv, fetchurl, validatePkgConfig }:
 
 stdenv.mkDerivation rec {
   pname = "duktape";
@@ -8,6 +8,8 @@ stdenv.mkDerivation rec {
     sha256 = "19szwxzvl2g65fw95ggvb8h0ma5bd9vvnnccn59hwnc4dida1x4n";
   };
 
+  nativeBuildInputs = [ validatePkgConfig ];
+
   postPatch = ''
     substituteInPlace Makefile.sharedlibrary \
       --replace 'gcc' '${stdenv.cc.targetPrefix}cc' \
@@ -23,9 +25,10 @@ stdenv.mkDerivation rec {
   installPhase = ''
     install -d $out/bin
     install -m755 duk $out/bin/
-    install -d $out/lib
+    install -d $out/lib/pkgconfig
     install -d $out/include
     make -f Makefile.sharedlibrary install INSTALL_PREFIX=$out
+    substituteAll ${./duktape.pc.in} $out/lib/pkgconfig/duktape.pc
   '';
   enableParallelBuilding = true;
 

pkgs/development/interpreters/duktape/duktape.pc.in

@@ -0,0 +1,10 @@
+prefix=@out@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: duktape
+Description: An embeddable Javascript engine, with a focus on portability and compact footprint
+Version: @version@
+Libs: -L${libdir} -lduktape
+Cflags: -I${includedir}