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Re: GNUstep - libobjc2 compile error

From: Bob Plymale
Subject: Re: GNUstep - libobjc2 compile error
Date: Thu, 22 Jul 2021 13:16:05 -0400
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0

Starting clean I installed msys2 and then ran the below script and received the following error:

Build make
configure: loading site script /etc/config.site
checking build system type... x86_64-pc-msys
checking host system type... x86_64-pc-msys
checking target system type... x86_64-pc-msys
checking for pkgconfig... yes
checking for gnustep-config... no
checking for gawk... gawk
checking for library combo... gnu-gnu-gnu
checking for gcc... gcc
checking whether the C compiler works... no
configure: error: in `/home/bplymale/gnustep/tools-make':
configure: error: C compiler cannot create executables
See `config.log' for more details
./tools-scripts/build-msys_nt: line 33: /usr/GNUstep/System/Library/Makefiles/GNUstep.sh: No such file or directory
================ Post Installation ================
/bin/bash: line 55: ./tools-scripts/post-install-msys_nt: No such file or directory

Also, someone else responded with a different method to use. So to be honest I am confused.

On 7/22/2021 7:49 AM, Gregory Casamento wrote:

Greetings!  Clang/libobjc2 is a PITA to get working on Windows.  Currently, we build using GCC on Msys2+Windows, but that will change soon.   You might find the following link helpful:

Once you havc installed MSYS2, open an MSYS shell and run the above.   It should download and install everything you need to get started.  This does use gcc which means you will have access to some, not all, of ObjC2.0 features.

Please try that and let me know if you have any questions.

Thanks, GC

On Thu, Jul 22, 2021 at 7:33 AM Bob Plymale <bplymale@gmail.com> wrote:
Following the recommendation I cleaned up my previous attempts to get GNUstep working properly.

I installed msys2 and all of the required and optional packages to proceed on compiling and building  the following:
gnustep-make tools-make

Currently I am getting compile errors on compiling libobjc2.


> mkdir build
> cd build
> cmake -G Ninja -DCMAKE_C_COMPILER=d:\msys64\mingw64\bin\clang-cl.exe -DCMAKE_CXX_COMPILER=d:\msys64\mingw64\bin\clang-cl.exe ..
> ninja


D:\Staging\libobjc2\build>cmake -G Ninja -DCMAKE_C_COMPILER=d:\msys64\mingw64\bin\clang-cl.e
xe -DCMAKE_CXX_COMPILER=d:\msys64\mingw64\bin\clang-cl.exe ..
CMake Error at build/CMakeFiles/3.18.0/CMakeCCompiler.cmake:1 (set):
  Syntax error in cmake code at


  when parsing string


  Invalid character escape '\m'.
Call Stack (most recent call first):
  CMakeLists.txt:3 (project)

CMake Error: CMAKE_ASM_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!
See also "D:/Staging/libobjc2/build/CMakeFiles/CMakeOutput.log".
See also "D:/Staging/libobjc2/build/CMakeFiles/CMakeError.log”.

Anyone help me out so I can get GNUstep compiled, installed and working?

Apologies if I am using the wrong list account. I do not see much activity on any of them..



Ps: My end result is that I have a fully working object-c working on windows. My macOS objective-c is working just fine.

Gregory Casamento
GNUstep Lead Developer / OLC, Principal Consultant
http://www.gnustep.org - http://heronsperch.blogspot.com
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