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How to Compile a GTK4 program on Windows (using MSYS)

 

I wanted to create a GUI program using C and GTK. I am using a windows operating system, so I had followed the instructions from the GTK Windows installation page. However, when trying to compile my program using:

gcc main.c -o main.exe `pkg-config --cflags --libs gtk4`

I had the following errors:

gcc.exe: error: pkg-config: No such file or directory
gcc.exe: error: gtk4`: No such file or directory
gcc.exe: error: unrecognized command-line option '--cflags'
gcc.exe: error: unrecognized command-line option '--libs'

I noticed that the command  pkg-config --cflags --libs gtk4 was actually returning a list of required includes. It seemed that the gcc command simply was not able to recognize them. To solve the problem, I then created a Makefile, in which a variable called GTK_4_INCLUDES contains the list of includes. 

The compilation command becomes:  

gcc main.c -o main.exe $(GTK_4_INCLUDES)

To compile the program in the console, I just had to type mingw32-make, and I was able to execute the resulting compiled file. Done!

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