Unable to compile the project in CodeBlocks using msys2

[Alex Tuchin]

Hello!

I receive a message during compilation:

g++.exe -LN:\MyProgramming\Dislin\ -o bin\Debug\Dislin.exe obj\Debug\exa_cpp_test.o  -m64  N:\MyProgramming\Dislin\discyg_d.a N:\MyProgramming\Dislin\disgpp.a
N:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: N:\MyProgramming\Dislin\disgpp.a(disini.o):dis_win.cpp:(.text+0x46): undefined reference to `__getreent'.

I probably connected the libraries from the distribution incorrectly, but I don't know how to connect them correctly.
Please help me fix the project.

[Helmut Michels]

Dear Alex,

I think that you are using the wrong Dislin libraries. You are compiling with a Mingw port of the

g++ compiler, but are linking with the Dislin libraries for a Cygwin port. You have to use the

Dislin libraries of the distribution dl_11_mg.zip instead of dl_11_gc.zip.

With best regards,

Helmut

[Alex Tuchin]

Do I understand correctly that in the mode Debug and Release I  need to connect discpp.a and discppu.a, in the mode Release additionally dismg.a and dismgu.a, in the mode Debug  additionally  dismg_d.a and  dismgu_d.a? 

среда, 13 марта 2024 г. в 12:23:19 UTC+3, mic...@dislin-software.de:

[Helmut Michels]

No, you only need one of these libraries. The library dismg.a is for c and gfortran programming,

the library discpp.a for g++ programming. The special library versions dismgu.a and discppu.a

are necessary if your compiler supports the ucrt environment instead of  msvcrt. I think that

your compiler uses the msvcrt environment since it is located in the mingw64 directory tree

and not in ucrt64. You can check it out with gcc -v. All Dislin libraries are compiled for Release

mode, but are normally also working in Debug mode.

With best regards,

Helmut

[Alex Tuchin]

Dear Helmut!

Thanks a lot for the answers and help!

Unfortunately, it didn't work out. I'm getting a message:
-------------- Build: Release in Dislin (compiler: GNU GCC Compiler)---------------
g++.exe -Wall -m64 -fexceptions -std=c++20 -O2 -Wall -IN:\MyProgramming\Dislin -c N:\MyProgramming\Dislin\exa_cpp.cpp -o obj\Release\exa_cpp.o
g++.exe -LN:\MyProgramming\Dislin -o bin\Release\Dislin.exe obj\Release\exa_cpp.o  -m64 -s  N:\MyProgramming\Dislin\discpp.a
N:\MyProgramming\Dislin\exa_cpp.cpp: In function 'void exa_10()':
N:\MyProgramming\Dislin\exa_cpp.cpp:579:10: warning: variable 'nl' set but not used [-Wunused-but-set-variable]
  579 | { int i, nl;
      |          ^~
N:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: N:\MyProgramming\Dislin\discpp.a(qqwini.o):qqw_win.c:(.text+0x255c): undefined reference to `__imp_glRasterPos2i'
N:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: N:\MyProgramming\Dislin\discpp.a(qqwini.o):qqw_win.c:(.text+0x2584): undefined reference to `__imp_glDrawPixels'
............................................... (many other type errors " undefined reference")

With best regards, Alex

среда, 13 марта 2024 г. в 17:59:20 UTC+3, mic...@dislin-software.de:

[Helmut Michels]

Dear Alex,

the warning is harmless, but the undefined references are caused by a missing OpenGL library

in the link command. You have to add the option -lopengl32 to the link command.

With best regards,

Helmut

[Alex Tuchin]

Dear Helmut.

Unfortunately, it also didn't work out with -lopengl32. I'm getting a message:
g++.exe -Wall -m64 -fexceptions -std=c++20 -g -Wall  -c N:\MyProgramming\Dislin\exa_cpp.cpp -o obj\Debug\exa_cpp.o
g++.exe  -o bin\Debug\Dislin.exe obj\Debug\exa_cpp.o  -m64 -lopengl32  N:\MyProgramming\Dislin\discpp.a

N:\MyProgramming\Dislin\exa_cpp.cpp: In function 'void exa_10()':
N:\MyProgramming\Dislin\exa_cpp.cpp:579:10: warning: variable 'nl' set but not used [-Wunused-but-set-variable]
  579 | { int i, nl;
      |          ^~
N:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: N:\MyProgramming\Dislin\discpp.a(qqwini.o):qqw_win.c:(.text+0x255c): undefined reference to `__imp_glRasterPos2i'
N:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: N:\MyProgramming\Dislin\discpp.a(qqwini.o):qqw_win.c:(.text+0x2584): undefined reference to `__imp_glDrawPixels'

..............................................................................................

With best regards, Alex

среда, 13 марта 2024 г. в 23:44:14 UTC+3, mic...@dislin-software.de:

[Helmut Michels]

Dear Alex,

please set the option -lopengl32 after the Dislin library discpp.a, not before.

With best regards,

Helmut

[Alex Tuchin]

Dear Helmut.

Unfortunately, it also didn't work:

g++.exe -Wall -m64 -fexceptions -std=c++20 -g -Wall  -c N:\MyProgramming\Dislin\exa_cpp.cpp -o obj\Debug\exa_cpp.o
g++.exe  -o bin\Debug\Dislin.exe obj\Debug\exa_cpp.o  -m64 N:\MyProgramming\Dislin\discpp.a -lopengl32  

N:\MyProgramming\Dislin\exa_cpp.cpp: In function 'void exa_10()':
N:\MyProgramming\Dislin\exa_cpp.cpp:579:10: warning: variable 'nl' set but not used [-Wunused-but-set-variable]
  579 | { int i, nl;
      |          ^~

N:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: N:\MyProgramming\Dislin\discpp.a(qqwini.o):qqw_win.c:(.text+0x2656): undefined reference to `__imp_SetPixel'
N:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: N:\MyProgramming\Dislin\discpp.a(qqwini.o):qqw_win.c:(.text+0x280d): undefined reference to `__imp_SetPixel'
--------------------------------------------------------

With best regards, Alex

четверг, 14 марта 2024 г. в 20:41:47 UTC+3, mic...@dislin-software.de:

[Alex Tuchin]

Dear Helmut.

As I understand it, I do not have the necessary libraries connected to the project. How can we understand from the compiler messages which additional libraries are required? Maybe I need to install additional libraries using msys2 and connect them?

With best regards, Alex

пятница, 15 марта 2024 г. в 10:35:30 UTC+3, Alex Tuchin:

[Helmut Michels]

Dear Alex,

the system libraries required by Dislin are user32, gdi32 and opengl32. It looks like that the OpenGL

functions are now found by the linker. SetPixel is included in the gdi32 library. Please add the options

-luser32 -lgdi32 -lopengl32 to your linker command (after the Dislin library). Don't be suprised about

the term '32' in the library names. For 64-bit programming the 64-bit versions of these libraries are

used.

With best regards,

Helmut

[Helmut Michels]

Alex,

I think that you have already installed all necessary system libraries for Dislin with your compiler.

You only have to specify them in your linking command. A search for a undefined reference in the internet

tells you to which library the function belongs. You can also take to look at the Dislin linking

scripts (cpplink, clink, f90link) to see how linking is done.

With best regards,

Helmut    

[Alex Tuchin]

Dear Helmut.

Thank you very much! It finally worked out. I should have seen earlier the mcplink.bat to connect the necessary libraries immediately.

With best regards, Alex

пятница, 15 марта 2024 г. в 12:57:09 UTC+3, mic...@dislin-software.de:

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