Compiling 2.1 on Linux with QT-Creator

lasconic wrote

On which OS ? Do you have Qt 5.4 installed?

ralfD wrote

Am Dienstag, 28. Februar 2017 20:10 CET, Lasconic <[hidden email]> schrieb:
> You will need Qt 5.4 for MuseScore 2.1 I'm afraid.
Are you shure this is the cause of that error? That sounds vaguely familiar, but AFAIK I only needed to mess with the linker flags.

ralfD wrote

Am Mittwoch, 01. März 2017 02:11 CET, MLutz <[hidden email]> schrieb:
 
> Thank you very much for all the help.
> It finally worked, as soon as I deleted the "-fPIE" from line 163 of
> CMakeLists.txt.
> All other tries were in vain ...

Are you shure the binary runs stable? AFAAIK you really need the -fpic flag to compile against
newer Qt5 versions (unless you compiled Qt yourself and disabled Qt's "reduce relocations").
From Qt's changelog:

- On x86 and x86-64 systems with ELF binaries (especially Linux), due to
  a new optimization in GCC 5.x in combination with a recent version of
  GNU binutils, compiling Qt applications with -fPIE is no longer
  enough with GCC 5.x. Applications now need to be compiled with
  the -fPIC option if Qt's option "reduce relocations" is active. For
  backward compatibility only, Qt accepts the use of -fPIE for GCC 4.x
  versions.
  Note that Clang is known to generate incompatible code even with -fPIC if
  the -flto option is active.
  Applications using qmake or cmake >= 2.8.12 as their build system will
  adapt automatically. Applications using an older release of cmake in
  combination with GCC 5.x need to change their CMakeLists.txt to add
  Qt5Core_EXECUTABLE_COMPILE_FLAGS to CMAKE_CXX_FLAGS. In particular,
  applications using cmake >= 2.8.9 and < 2.8.11 will continue to build
  with the -fPIE option and invoke the special compatibility mode if using
  GCC 4.x.