ADA not able to link glut32.dll in GPS IDE - ada

Question

I'm writing simple OpenGl program using ADA in GPS IDE.
I have all supporting file (like glut.ads/adb, Gl.ads/adb)
I have created Pragma like "pragma Linker_Options("../Lib/glut32.dll");"
But I get errors like
Link
[link] main.adb
collect2.exe: error: ld returned 5 exit status
gprbuild: link of main.adb failed
gprbuild: failed command was: c:\gnat\2019\bin\gcc.exe main.o b__main.o D:\Saravanan\Project\Training\Open_GL Project\obj\GL-Extended.o D:\Saravanan\Project\Training\Open_GL Project\obj\GL.o D:\Saravanan\Project\Training\Open_GL Project\obj\glut.o -LD:\Saravanan\Project\Training\Open_GL Project\obj\ -LD:\Saravanan\Project\Training\Open_GL Project\obj\ -LC:/gnat/2019/lib/gcc/x86_64-pc-mingw32/8.3.1/adalib/ -static-libgcc ../Lib/glut32.dll C:/gnat/2019/lib/gcc/x86_64-pc-mingw32/8.3.1/adalib/libgnat
.a -Wl,--stack=0x2000000 -o main.exe
[2019-12-23 15:28:13] process exited with status 4, elapsed time: 01.83s
So kindly help me to resolve this issue

Answer 1

You might want to try
pragma Linker_Options("-L../Lib");
pragma Linker_Options("-lglut32");
See also, for example, here and here.

Answer 2

If you're using FreeGLUT, you need to link against additional system libraries:
pragma Linker_Options ("-lglu32", "-lopengl32", "-lgdi32",
"-lwinmm", "-luser32");
These are from the FreeGLUT C header.
Then you either do what #DeeDee suggested, or you place your DLL file into c:\gnat\2019\lib and just do
pragma Linker_Options ("-lglut32");
You might want to have a look at my OpenGLAda binding which handles this stuff with GPR files but uses GLFW instead of GLUT.