Trying to generate gdc for mingw-w64(x86 and x64) using msys2

[Johannes Pfau via D.gnu]

Am Thu, 05 Nov 2015 12:42:08 +0000
schrieb Vincent R <lol at dlang.org>:

> Hi,
> 
> I would like to generate a d compiler targeting mingw-w64 using 
> the msys2 build system.
> So I have installed msys2 (posix emulation like cygwin) as shown 
> here: http://msys2.github.io/ and I have installed necessary 
> packages:
> 
> $ pacman -S base-devel
> $ pacman -S mingw-w64-x86_64-toolchain
> 
> optionally you can also installed  mingw-w64-i686-toolchain if 
> you want to build mingw32 packages but for now I am only 
> interested in mingw64 (64 bits).
> 
> Then I have forked MINGW-packages repository 
> (https://github.com/vrichomme/MINGW-packages) to make my 
> experiments.
> 
> $ git clone https://github.com/vrichomme/MINGW-packages.git
> $ cd MINGW-packages/mingw-w64-gcc
> 
> Inside mingw-w64-gcc I have used the 4 patches and renamed them 
> to be more compliant with msys2 build system:
> 
> gdc-patch-gcc-5.patch
> gdc-patch-toplev-5.patch
> gdc-patch-versym-cpu-5.patch
> gdc-patch-versym-os-5.patch
> 
> Then we are ready to start compilation:
> 
> $ MINGW_INSTALLS=mingw64 makepkg-mingw -sLf
> ...
> /home/19013692/MINGW-packages/mingw-w64-gcc/src/build-x86_64-w64-mingw32/./gcc/gdc
> -B/home/19013692/MINGW-packages/mingw-w64-gcc/src/build-x86_64-w64-mingw32/./gcc/
> -L/mingw64/x86_64-w64-mingw32/lib -L/mingw64/lib
> -isystem /mingw64/x86_64-w64-mingw32/include
> -isystem /mingw64/include -B/mingw64/x86_64-w64-mingw32/bin/
> -B/mingw64/x86_64-w64-mingw32/lib/
> -isystem /mingw64/x86_64-w64-mingw32/include
> -isystem /mingw64/x86_64-w64-mingw32/sys-include    -o
> gcc/gthreads/posix.o -Wall  -g -frelease -O2 -nostdinc -pipe
> -Wno-deprecated -I ../../../../gcc-5.2.0/libphobos/libdruntime
> -I ./x86_64-w64-mingw32 -I .
> -c ../../../../gcc-5.2.0/libphobos/libdruntime/gcc/gthreads/posix.d ../../../../gcc-5.2.0/libphobos/libdruntime/gcc/gthreads/posix.d:29:1:
> error: undefined identifier pthread_key_t, did you mean alias
> gthread_key_t? alias gthread_key_t   = pthread_key_t; ^ ...
> 
> I am quite new to D language but I can see that posix.d imports 
> core.sys.posix.pthread and I thought that on Windows 
> Version(Posix) is not defined so how can it compile ?
> Do I need to add a -DPosix or something like that ?
> Do I need to add a Version(Mingw64) inside core.sys.posix.pthread 
> ?
> 
> Thanks
> 
> 
> 
> 
> 
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> 
> 

Do you use winpthreads?
It seems the thread model is 'wrong':
https://github.com/D-Programming-GDC/GDC/blob/master/libphobos/configure.ac#L299

Please post the output of
/home/19013692/MINGW-packages/mingw-w64-gcc/src/build-x86_64-w64-mingw32/./gcc/gdc
-v


(I guess threadmodel is posix for winpthreads. But druntime doesn't
really understand winpthreads. We'd have to modify
core/sys/posix/pthread.d and adjust the version(Posix) block. But it's
hard to estimate how many headers we need to change to support this.)