cmake, podofo: fix finding freetype-2.5

pkgs/development/libraries/podofo/default.nix

@@ -1,12 +1,14 @@
-{stdenv, fetchurl, cmake, zlib, freetype, libjpeg, libtiff, fontconfig,
-openssl, libpng, lua5}:
+{ stdenv, fetchurl, cmake, zlib, freetype, libjpeg, libtiff, fontconfig
+, openssl, libpng, lua5 }:
 
 stdenv.mkDerivation rec {
   name = "podofo-0.9.2";
+
   src = fetchurl {
     url = "mirror://sourceforge/podofo/${name}.tar.gz";
     sha256 = "1wx3s0718rmhdzdwyi8hgpf2s92sk3hijy8f4glrmnjpiihr2la6";
   };
+
   propagatedBuildInputs = [ zlib freetype libjpeg libtiff fontconfig openssl libpng ];
   nativeBuildInputs = [ cmake ];
   buildInputs = [ lua5 stdenv.gcc.libc ];
@@ -17,6 +19,15 @@ stdenv.mkDerivation rec {
       lua5.crossDrv stdenv.gccCross.libc ];
   };
 
+  # fix finding freetype-2.5
+  preConfigure = ''
+    substituteInPlace ./CMakeLists.txt \
+      --replace FREETYPE_INCLUDE_DIR FREETYPE_INCLUDE_DIRS \
+      --replace 'FIND_PACKAGE(FREETYPE' 'FIND_PACKAGE(Freetype'
+
+    rm ./cmake/modules/Find{FREETYPE,ZLIB,PkgConfig}.cmake
+  '';
+
   cmakeFlags = "-DPODOFO_BUILD_SHARED=ON -DPODOFO_BUILD_STATIC=OFF";
 
   meta = {