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user927958
Asked: 2019-02-24 12:26:27 +0800 CST

I cannot compile gtk apps after updating to 18.04

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I am trying to compile a program with a user interface as a .out file. I compiled it just the same way before and I did not edit the code, using this

`pkg-config --cflags --libs gtk+-2.0`

Back in 16.04, the code compiled into an application and I could double click and launch the app. This time, I can't. When I double click, it tries to open with glade and shows an error. For some reason, the compiler or the system thinks the file is supposed to be a shared library. How can I tell it to be an application? I have to execute it in the terminal like a non-gtk compiled C file.

How can I compile it as an app on 18.04?

command-line gtk compiling c glade

1 Answers

  1. Best Answer

    As of gcc-6.2 gcc in Ubuntu is configured with the --enable-default-pie option, (Position Independent Executable), that's why it's a shared object. (- LSB shared object

    The compiler override for this is -fno-pie , the linker override is -no-pie

    Apparently for an a.out file you only need to apply the linker -no-pie though both options together also work.

    Also a factor may be your file manager, some will allow marking & running the shared object as exectubale. Nautilus doesn't anymore.(nemo does

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