undefined reference to `z_inflate*' in Qt3D (qgltf)

g++ -Wl,--gc-sections -Wl,-O1 -o ../../bin/qgltf .obj/qgltf.o .obj/3DSConverter.o .obj/3DSLoader.o .obj/ACLoader.o .obj/ASELoader.o .obj/ASEParser.o .obj/Assimp.o .obj/AssimpCExport.o .obj/AssimpPCH.o .obj/B3DImporter.o .obj/BaseImporter.o .obj/Bitmap.o .obj/Blender
BMesh.o .obj/BaseProcess.o .obj/BlenderDNA.o .obj/BlenderLoader.o .obj/BlenderModifier.o .obj/BlenderScene.o .obj/BlenderTessellator.o .obj/BVHLoader.o .obj/CalcTangentsProcess.o .obj/COBLoader.o .obj/ColladaExporter.o .obj/ColladaLoader.o .obj/ColladaParser.o .obj/
ComputeUVMappingProcess.o .obj/ConvertToLHProcess.o .obj/CSMLoader.o .obj/DeboneProcess.o .obj/DefaultIOStream.o .obj/DefaultIOSystem.o .obj/DefaultLogger.o .obj/DXFLoader.o .obj/Exporter.o .obj/FindDegenerates.o .obj/FindInstancesProcess.o .obj/FindInvalidDataProce
ss.o .obj/FixNormalsStep.o .obj/GenFaceNormalsProcess.o .obj/GenVertexNormalsProcess.o .obj/HMPLoader.o .obj/IFCCurve.o .obj/IFCGeometry.o .obj/IFCLoader.o .obj/IFCMaterial.o .obj/IFCProfile.o .obj/IFCReaderGen1.o .obj/IFCReaderGen2.o .obj/IFCUtil.o .obj/Importer.o 
.obj/ImporterRegistry.o .obj/ImproveCacheLocality.o .obj/IRRLoader.o .obj/IRRMeshLoader.o .obj/IRRShared.o .obj/JoinVerticesProcess.o .obj/LimitBoneWeightsProcess.o .obj/LWOAnimation.o .obj/LWOBLoader.o .obj/LWOLoader.o .obj/LWOMaterial.o .obj/LWSLoader.o .obj/MakeV
erboseFormat.o .obj/MaterialSystem.o .obj/MD2Loader.o .obj/MD3Loader.o .obj/MD5Loader.o .obj/MD5Parser.o .obj/MDCLoader.o .obj/MDLLoader.o .obj/MDLMaterialLoader.o .obj/MS3DLoader.o .obj/NDOLoader.o .obj/NFFLoader.o .obj/ObjExporter.o .obj/ObjFileImporter.o .obj/Obj
FileMtlImporter.o .obj/ObjFileParser.o .obj/OFFLoader.o .obj/OgreImporter.o .obj/OgreMaterial.o .obj/OptimizeGraph.o .obj/OptimizeMeshes.o .obj/PlyExporter.o .obj/PlyLoader.o .obj/PlyParser.o .obj/PostStepRegistry.o .obj/PretransformVertices.o .obj/ProcessHelper.o .
obj/Q3BSPFileImporter.o .obj/Q3BSPFileParser.o .obj/Q3BSPZipArchive.o .obj/Q3DLoader.o .obj/RawLoader.o .obj/RemoveComments.o .obj/RemoveRedundantMaterials.o .obj/RemoveVCProcess.o .obj/SceneCombiner.o .obj/ScenePreprocessor.o .obj/SGSpatialSort.o .obj/SkeletonMeshB
uilder.o .obj/SMDLoader.o .obj/SortByPTypeProcess.o .obj/SpatialSort.o .obj/SplitByBoneCountProcess.o .obj/SplitLargeMeshes.o .obj/StandardShapes.o .obj/STEPFileReader.o .obj/STLExporter.o .obj/STLLoader.o .obj/Subdivision.o .obj/TargetAnimation.o .obj/TerragenLoade
r.o .obj/TextureTransform.o .obj/TriangulateProcess.o .obj/UnrealLoader.o .obj/ValidateDataStructure.o .obj/VertexTriangleAdjacency.o .obj/XFileImporter.o .obj/XFileParser.o .obj/XGLLoader.o .obj/clipper.o .obj/ConvertUTF.o .obj/irrXML.o .obj/ioapi.o .obj/unzip.o .o
bj/shapes.o .obj/advancing_front.o .obj/cdt.o .obj/sweep.o .obj/sweep_context.o .obj/FBXAnimation.o .obj/FBXBinaryTokenizer.o .obj/FBXDeformer.o .obj/FBXDocument.o .obj/FBXDocumentUtil.o .obj/FBXImporter.o .obj/FBXMaterial.o .obj/FBXMeshGeometry.o .obj/FBXModel.o .o
bj/FBXNodeAttribute.o .obj/FBXParser.o .obj/FBXProperties.o .obj/FBXTokenizer.o .obj/FBXUtil.o .obj/IFCBoolean.o .obj/IFCOpenings.o .obj/FBXConverter.o .obj/STEPFileEncoding.o .obj/OgreBinarySerializer.o .obj/OgreStructs.o .obj/OgreXmlSerializer.o   -L/home/florian/
tmp/qt-debug-pkgbuild/qt5/qt-everywhere-opensource-src-5.6.0-beta/qtbase/lib -lQt5Bootstrap -lz -lpthread 
[...]
.obj/BlenderLoader.o: In function `Assimp::BlenderImporter::InternReadFile(std::string const&, aiScene*, Assimp::IOSystem*)':
BlenderLoader.cpp:(.text+0x869e): undefined reference to `z_inflateInit2_'
BlenderLoader.cpp:(.text+0x86ee): undefined reference to `z_inflate'
BlenderLoader.cpp:(.text+0x873d): undefined reference to `z_inflateEnd'
.obj/XFileParser.o: In function `Assimp::XFileParser::XFileParser(std::vector<char, std::allocator<char> > const&)':
XFileParser.cpp:(.text+0xaff1): undefined reference to `z_inflateInit2_'
XFileParser.cpp:(.text+0xb0e9): undefined reference to `z_inflate'
XFileParser.cpp:(.text+0xb0fa): undefined reference to `z_inflateReset'
XFileParser.cpp:(.text+0xb111): undefined reference to `z_inflateSetDictionary'
XFileParser.cpp:(.text+0xb141): undefined reference to `z_inflateEnd'
.obj/XGLLoader.o: In function `Assimp::XGLImporter::InternReadFile(std::string const&, aiScene*, Assimp::IOSystem*)':
XGLLoader.cpp:(.text+0x94d1): undefined reference to `z_inflateInit2_'
XGLLoader.cpp:(.text+0x9531): undefined reference to `z_inflate'
XGLLoader.cpp:(.text+0x9586): undefined reference to `z_inflateEnd'
.obj/FBXParser.o: In function `Assimp::FBX::(anonymous namespace)::ReadBinaryDataArray(char, unsigned int, char const*&, char const*, std::vector<char, std::allocator<char> >&, Assimp::FBX::Element const&) [clone .constprop.230]':
FBXParser.cpp:(.text+0x27c5): undefined reference to `z_inflateInit_'
FBXParser.cpp:(.text+0x27f7): undefined reference to `z_inflate'
FBXParser.cpp:(.text+0x2808): undefined reference to `z_inflateEnd'
collect2: error: ld returned 1 exit status
Makefile:789: recipe for target '../../bin/qgltf' failed
make[3]: *** [../../bin/qgltf] Error 1
make[3]: Leaving directory '/home/florian/tmp/qt-debug-pkgbuild/qt5/qt-everywhere-opensource-src-5.6.0-beta/qt3d/tools/qgltf'
Makefile:42: recipe for target 'sub-qgltf-make_first' failed
make[2]: *** [sub-qgltf-make_first] Error 2
make[2]: Leaving directory '/home/florian/tmp/qt-debug-pkgbuild/qt5/qt-everywhere-opensource-src-5.6.0-beta/qt3d/tools'
Makefile:70: recipe for target 'sub-tools-make_first' failed
make[1]: *** [sub-tools-make_first] Error 2
make[1]: Leaving directory '/home/florian/tmp/qt-debug-pkgbuild/qt5/qt-everywhere-opensource-src-5.6.0-beta/qt3d'
Makefile:613: recipe for target 'module-qt3d-make_first' failed
make: *** [module-qt3d-make_first] Error 2

Build type:    linux-g++ (x86_64, CPU features: mmx sse sse2)
Platform notes:

            - Also available for Linux: linux-clang linux-kcc linux-icc linux-cxx
        
Build options:
  Configuration .......... accessibility accessibility-atspi-bridge alsa audio-backend avx avx2 c++11 c++14 c++1z clock-gettime clock-monotonic compile_examples concurrent cups dbus dbus-linked egl egl_x11 eglfs eglfs_gbm enable_new_dtags evdev eventfd fontconfig fu
ll-config gbm getaddrinfo getifaddrs glib gstreamer-1.0 gtk2 gtkstyle harfbuzz iconv icu inotify ipv6ifname kms large-config largefile libinput libproxy libudev linuxfb medium-config minimal-config mremap mtdev nis opengl openssl png posix_fallocate precompile_heade
r pulseaudio qpa qpa reduce_exports reduce_relocations release rpath shared small-config sse2 sse3 sse4_1 sse4_2 ssse3 system-freetype system-jpeg system-png system-zlib threadsafe-cloexec use_gold_linker xcb xcb-glx xcb-plugin xcb-sm xcb-xlib xinput2 xkbcommon-evde
v xlib xrender 
  Build parts ............ libs tools examples
  Mode ................... release
  Using sanitizer(s)...... none
  Using C++ standard ..... c++1z
  Using gold linker....... yes
  Using new DTAGS ........ yes
  Using PCH .............. yes
  Using LTCG ............. no
  Target compiler supports:
    SSE2/SSE3/SSSE3 ...... yes/yes/yes
    SSE4.1/SSE4.2 ........ yes/yes
    AVX/AVX2 ............. yes/yes

Qt modules and options:
  Qt D-Bus ............... yes (linked to dbus-1)
  Qt Concurrent .......... yes
  Qt GUI ................. yes
  Qt Widgets ............. yes
  Large File ............. yes
  QML debugging .......... yes
  Use system proxies ..... no

Support enabled for:
  Accessibility .......... yes
  ALSA ................... yes
  CUPS ................... yes
  Evdev .................. yes
  FontConfig ............. yes
  FreeType ............... yes (system library)
  Glib ................... yes
  GStreamer .............. yes (1.0)
  GTK theme .............. yes
  HarfBuzz ............... yes (bundled copy)
  Iconv .................. yes
  ICU .................... yes
  Image formats: 
    GIF .................. yes (plugin, using bundled copy)
    JPEG ................. yes (plugin, using system library)
    PNG .................. yes (in QtGui, using system library)
  libinput................ yes
  Logging backends: 
    journald ............... no
    syslog   ............... no
  mtdev .................. yes (system library)
  Networking: 
    getaddrinfo .......... yes
    getifaddrs ........... yes
    IPv6 ifname .......... yes
    libproxy.............. yes
    OpenSSL .............. yes (loading libraries at run-time)
  NIS .................... yes
  OpenGL / OpenVG: 
    EGL .................. yes
    OpenGL ............... desktop
    OpenVG ............... no
  PCRE ................... system
  pkg-config ............. yes 
  PulseAudio ............. yes
  QPA backends: 
    DirectFB ............. no
    EGLFS ................ yes
      EGLFS i.MX6 ........ no
      EGLFS i.MX6 Wayland. no
      EGLFS EGLDevice .... no
      EGLFS GBM .......... yes
      EGLFS Mali ......... no
      EGLFS Raspberry Pi . no
      EGLFS X11 .......... yes
    LinuxFB .............. yes
    Mir client............ no
    XCB .................. yes (system library)
      EGL on X ........... yes
      GLX ................ yes
      MIT-SHM ............ yes
      Xcb-Xlib ........... yes
      Xcursor ............ yes (loaded at runtime)
      Xfixes ............. yes (loaded at runtime)
      Xi ................. no
      Xi2 ................ yes
      Xinerama ........... yes (loaded at runtime)
      Xrandr ............. yes (loaded at runtime)
      Xrender ............ yes
      XKB ................ yes
      XShape ............. yes
      XSync .............. yes
      XVideo ............. yes
  Session management ..... yes
  SQL drivers: 
    DB2 .................. no
    InterBase ............ yes (plugin)
    MySQL ................ yes (plugin)
    OCI .................. no
    ODBC ................. yes (plugin)
    PostgreSQL ........... yes (plugin)
    SQLite 2 ............. no
    SQLite ............... yes (plugin, using bundled copy)
    TDS .................. no
  tslib .................. no
  udev ................... yes
  xkbcommon-x11........... yes (system library)
  xkbcommon-evdev......... yes
  zlib ................... yes (system library)