Segmentation fault after static compilation

Magnus21

Hey there, my problem is a bit more complex, I think, but maybe someone can help me anyways. My program crashes with a segmentation fault on startup, when I compiled it statically even though it does not crash when I compile it dynamically. Is there anything I need to do extra when compiling statically?
Here are the things I did to compile Qt statically:

git clone git://code.qt.io/qt/qt5.git
cd qt5
git checkout v5.8.0
./init-repository --module-subset=default,-qtwebkit,-qtwebkit-examples,-qtwebengine
./configure -static -developer-build -opensource -nomake examples -nomake tests -confirm-license
make -j4

And I compiled my program using qmake -config release && make after adding the static Qt build to the PATH variable.
The qmake returned the following warnings:

Project WARNING: Plugin class name could not be determined for qwayland-egl plugin.
Project WARNING: Plugin class name could not be determined for qwayland-generic plugin.
Project WARNING: Plugin class name could not be determined for qwayland-xcomposite-egl plugin.
Project WARNING: Plugin class name could not be determined for qwayland-xcomposite-glx plugin.

The program compiles successfully and readelf -d QuickCurver| grep -Eo 'Shared.*'| sed 's/Shared library: \[//g'| sed 's/\]//g' confirms that it is linked statically (but why does it have Wayland dependencies? I run X11):

libwayland-egl.so.1
libXcomposite.so.1
libwayland-client.so.0
libwayland-cursor.so.0
libxcb-xinerama.so.0
libXrender.so.1
libxcb-xkb.so.1
libxcb-sync.so.1
libxcb-xfixes.so.0
libxcb-randr.so.0
libxcb-image.so.0
libxcb-shm.so.0
libxcb-keysyms.so.1
libxcb-icccm.so.4
libxcb-shape.so.0
libxcb-glx.so.0
libXi.so.6
libSM.so.6
libICE.so.6
libxcb-render-util.so.0
libxcb-render.so.0
libxkbcommon-x11.so.0
libjasper.so.4
libjpeg.so.8
libmng.so.2
libtiff.so.5
libwebp.so.6
libwebpdemux.so.2
libgbm.so.1
libdrm.so.2
libXext.so.6
libmtdev.so.1
libinput.so.10
libxkbcommon.so.0
libudev.so.1
libxcb.so.1
libX11.so.6
libX11-xcb.so.1
libfontconfig.so.1
libfreetype.so.6
libts.so.0
libEGL.so.1
libpng16.so.16
libharfbuzz.so.0
libdbus-1.so.3
libicui18n.so.58
libicuuc.so.58
libicudata.so.58
libdl.so.2
librt.so.1
libz.so.1
libpcre16.so.0
libgthread-2.0.so.0
libglib-2.0.so.0
libGL.so.1
libpthread.so.0
libstdc++.so.6
libm.so.6
libgcc_s.so.1
libc.so.6
ld-linux-x86-64.so.2

Now when I start it with ./Quickcurver, it immediately crashes, even though it did not when it was linked dynamically...
stracing the system calls shows that the last system calls before the crash were the following:

futex(0x7fafeebcb048, FUTEX_WAKE_PRIVATE, 2147483647) = 0
getpid()                                = 11128
# the same getpid() call repeats several times after that
open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
read(3, "\203\327\236\256", 4)          = 4
close(3)                                = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x10} ---
+++ killed by SIGSEGV (core dumped) +++
[1]    11126 segmentation fault (core dumped)  strace ./QuickCurver

I don't know what the chances are that someone can help me here, but I would really appreciate it if someone would. The full source code is available here: https://github.com/magnus-gross/quickcurver

Edit: It would even help, if someone could tell me what else I can do other than using strace to further analyze the problem.