r241432 - Teach mingw toolchain the msys2 mingw-w64 distribution C++ dirs.

Yaron Keren yaron.keren at gmail.com
Fri Jul 10 11:38:39 PDT 2015 

clang can locate  /usr/x86_64-w64-mingw32/sys-root if provided to the -sysroot
option or deduce sysroot automatically if it finds
/usr/x86_64-w64-mingw32/sys-root/bin/gcc binary on the path.

clang does not deduce the sysroot from the -isystem directory by itself.




2015-07-10 19:57 GMT+03:00 İsmail Dönmez <ismail at donmez.ws>:

> Anyhow this is not a nice example since it uses Cygwin's ld. A better
> example from Linux side:
>
> λ clang -v -target x86_64-w64-mingw32 -isystem
> /usr/x86_64-w64-mingw32/sys-root/x86_64-w64-mingw32/include
> randomworks/windows/nic.c
> clang version 3.7.0 (trunk 241471)
> Target: x86_64-w64-windows-gnu
> Thread model: posix
>  "/opt/clang/bin/clang-3.7" -cc1 -triple x86_64-w64-windows-gnu
> -emit-obj -mrelax-all -disable-free -main-file-name nic.c
> -mrelocation-model pic -pic-level 2 -mthread-model posix -fmath-errno
> -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64
> -momit-leaf-frame-pointer -v -dwarf-column-info -resource-dir
> /opt/clang/bin/../lib64/clang/3.7.0 -isystem
> /usr/x86_64-w64-mingw32/sys-root/x86_64-w64-mingw32/include
> -internal-isystem /opt/clang/bin/../lib64/clang/3.7.0/include
> -internal-isystem include -internal-isystem include-fixed
> -internal-isystem /usr/mingw32/include -internal-isystem /usr/include
> -fdebug-compilation-dir /home/ismail -ferror-limit 19 -fmessage-length
> 126 -mstackrealign -fno-use-cxa-atexit -fobjc-runtime=gcc
> -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/nic-08e945.o -x
> c randomworks/windows/nic.c
> clang -cc1 version 3.7.0 based upon LLVM 3.7.0svn default target
> x86_64-suse-linux
> ignoring nonexistent directory "include"
> ignoring nonexistent directory "include-fixed"
> ignoring nonexistent directory "/usr/mingw32/include"
> #include "..." search starts here:
> #include <...> search starts here:
>  /usr/x86_64-w64-mingw32/sys-root/x86_64-w64-mingw32/include
>  /opt/clang/bin/../lib64/clang/3.7.0/include
>  /usr/include
> End of search list.
>  "/usr/bin/x86_64-w64-mingw32-ld" -m i386pep -Bdynamic -o a.exe crt2.o
> crtbegin.o -L -L/usr/lib -L/usr/mingw32/lib /tmp/nic-08e945.o
> -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt -ladvapi32
> -lshell32 -luser32 -lkernel32 -lmingw32 -lgcc_s -lgcc -lmoldname
> -lmingwex -lmsvcrt crtend.o
> /usr/bin/x86_64-w64-mingw32-ld: cannot find crt2.o: No such file or
> directory
> /usr/bin/x86_64-w64-mingw32-ld: cannot find crtbegin.o: No such file
> or directory
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmingw32
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lgcc_s
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lgcc
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmoldname
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmingwex
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmsvcrt
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -ladvapi32
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lshell32
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -luser32
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lkernel32
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmingw32
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lgcc_s
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lgcc
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmoldname
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmingwex
> /usr/bin/x86_64-w64-mingw32-ld: cannot find -lmsvcrt
> /usr/bin/x86_64-w64-mingw32-ld: cannot find crtend.o: No such file or
> directory
> clang-3.7: error: linker command failed with exit code 1 (use -v to
> see invocation)
>
>
> On Fri, Jul 10, 2015 at 7:54 PM, İsmail Dönmez <ismail at donmez.ws> wrote:
> > This is without any patches (r241901-win64) and the original command
> > line is there:
> >
> > clang -v -target x86_64-w64-mingw32 -isystem
> >  C:/mingw-w64-6.0.0/x86_64-w64-mingw32/include -isystem
> >  C:/mingw-w64-6.0.0/include/c++/6.0.0 -isystem
> >  C:/mingw-w64-6.0.0/include/c++/6.0.0/x86_64-w64-mingw32
> >  randomworks/windows/nic.c
> >
> >
> > On Fri, Jul 10, 2015 at 7:51 PM, Yaron Keren <yaron.keren at gmail.com>
> wrote:
> >> This is with or without any patches? what is the original command line?
> >>
> >>
> >> 2015-07-10 19:30 GMT+03:00 İsmail Dönmez <ismail at donmez.ws>:
> >>>
> >>> Hi,
> >>>
> >>> I meant to try these but both on cygwin and linux hosts we have
> >>> linking regression that goes like:
> >>>
> >>> λ clang -v -target x86_64-w64-mingw32 -isystem
> >>> C:/mingw-w64-6.0.0/x86_64-w64-mingw32/include -isystem
> >>> C:/mingw-w64-6.0.0/include/c++/6.0.0 -isystem
> >>> C:/mingw-w64-6.0.0/include/c++/6.0.0/x86_64-w64-mingw32
> >>> randomworks/windows/nic.c
> >>> clang version 3.7.0 (https://github.com/llvm-mirror/clang.git
> >>> ca355c9f413a6ca4941e3033e89e5242e29bd802)
> >>> Target: x86_64-w64-windows-gnu
> >>> Thread model: posix
> >>>  "C:\\Program Files\\LLVM\\bin\\clang.exe" -cc1 -triple
> >>> x86_64-w64-windows-gnu -emit-obj -mrelax-all -disable-free
> >>> -main-file-name nic.c -mrelocation-model pic -pic-level 2
> >>> -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases
> >>> -munwind-tables -target-cpu x86-64 -momit-leaf-frame-pointer -v
> >>> -dwarf-column-info -resource-dir "C:\\Program
> >>> Files\\LLVM\\bin\\..\\lib\\clang\\3.7.0" -isystem
> >>> C:/mingw-w64-6.0.0/x86_64-w64-mingw32/include -isystem
> >>> C:/mingw-w64-6.0.0/include/c++/6.0.0 -isystem
> >>> C:/mingw-w64-6.0.0/include/c++/6.0.0/x86_64-w64-mingw32
> >>> -internal-isystem "C:\\Program
> >>> Files\\LLVM\\bin\\..\\lib\\clang\\3.7.0\\include" -internal-isystem
> >>> include -internal-isystem include-fixed -internal-isystem
> >>> "C:\\cygwin64\\mingw32\\include" -internal-isystem
> >>> "C:\\cygwin64\\include" -std=c11 -fdebug-compilation-dir
> >>> "C:\\cygwin64\\home\\ismail" -ferror-limit 19 -fmessage-length 0
> >>> -mstackrealign -fno-use-cxa-atexit -fobjc-runtime=gcc
> >>> -fdiagnostics-show-option -fcolor-diagnostics -fansi-escape-codes -o
> >>> "C:\\cygwin64\\tmp\\nic-6bff3b.o" -x c randomworks/windows/nic.c
> >>> clang -cc1 version 3.7.0 based upon LLVM 3.7.0svn default target
> >>> x86_64-pc-windows-msvc
> >>> ignoring nonexistent directory "include"
> >>> ignoring nonexistent directory "include-fixed"
> >>> ignoring nonexistent directory "C:\cygwin64\mingw32\include"
> >>> ignoring nonexistent directory "C:\cygwin64\include"
> >>> #include "..." search starts here:
> >>> #include <...> search starts here:
> >>>  C:/mingw-w64-6.0.0/x86_64-w64-mingw32/include
> >>>  C:/mingw-w64-6.0.0/include/c++/6.0.0
> >>>  C:/mingw-w64-6.0.0/include/c++/6.0.0/x86_64-w64-mingw32
> >>>  C:\Program Files\LLVM\bin\..\lib\clang\3.7.0\include
> >>> End of search list.
> >>>  "C:\\cygwin64\\bin\\ld.exe" -m i386pep -Bdynamic -o a.exe crt2.o
> >>> crtbegin.o -L "-LC:\\cygwin64\\lib" "-LC:\\cygwin64\\mingw32\\lib"
> >>> "C:\\cygwin64\\tmp\\nic-6bff3b.o" -lmingw32 -lgcc_s -lgcc -lmoldname
> >>> -lmingwex -lmsvcrt -ladvapi32 -lshell32 -luser32 -lkernel32 -lmingw32
> >>> -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt crtend.o
> >>> /usr/bin/ld: cannot find crt2.o: No such file or directory
> >>> /usr/bin/ld: cannot find crtbegin.o: No such file or directory
> >>> /usr/bin/ld: cannot find -lmingw32
> >>> /usr/bin/ld: cannot find -lgcc_s
> >>> /usr/bin/ld: cannot find -lgcc
> >>> /usr/bin/ld: cannot find -lmoldname
> >>> /usr/bin/ld: cannot find -lmingwex
> >>> /usr/bin/ld: cannot find -lmsvcrt
> >>> /usr/bin/ld: cannot find -lmingw32
> >>> /usr/bin/ld: cannot find -lgcc_s
> >>> /usr/bin/ld: cannot find -lgcc
> >>> /usr/bin/ld: cannot find -lmoldname
> >>> /usr/bin/ld: cannot find -lmingwex
> >>> /usr/bin/ld: cannot find -lmsvcrt
> >>> /usr/bin/ld: cannot find crtend.o: No such file or directory
> >>> clang.exe: error: linker command failed with exit code 1 (use -v to
> >>> see invocation)
> >>>
> >>> Any ideas? Also reproducible with gcc 5.1.1 on Linux.
> >>>
> >>>
> >>> On Tue, Jul 7, 2015 at 6:19 PM, Yaron Keren <yaron.keren at gmail.com>
> wrote:
> >>> > Here is a patch honoring sysroot for ld, let me know if it works for
> >>> > you.
> >>> >
> >>> > 2015-07-07 12:13 GMT+03:00 Yaron Keren <yaron.keren at gmail.com>:
> >>> >>
> >>> >> Hi,  Please see if the attached patch works on opensuse.
> >>> >>
> >>> >> I'll look at the cygnus ld issue later.
> >>> >>
> >>> >>
> >>> >> 2015-07-07 10:38 GMT+03:00 İsmail Dönmez <ismail at donmez.ws>:
> >>> >>>
> >>> >>> Hi,
> >>> >>>
> >>> >>> On Mon, Jul 6, 2015 at 10:40 AM, Yaron Keren <
> yaron.keren at gmail.com>
> >>> >>> wrote:
> >>> >>> > Author: yrnkrn
> >>> >>> > Date: Mon Jul  6 02:40:10 2015
> >>> >>> > New Revision: 241432
> >>> >>> >
> >>> >>> > URL: http://llvm.org/viewvc/llvm-project?rev=241432&view=rev
> >>> >>> > Log:
> >>> >>> > Teach mingw toolchain the msys2 mingw-w64 distribution C++ dirs.
> >>> >>> >
> >>> >>> >
> >>> >>> > Modified:
> >>> >>> >     cfe/trunk/lib/Driver/MinGWToolChain.cpp
> >>> >>> >     cfe/trunk/lib/Driver/ToolChains.h
> >>> >>>
> >>> >>> I tried this revision on openSUSE MinGW toolchain and its missing
> one
> >>> >>> include path, which is $GCC_ROOT/nclude/c++/x86_64-w64-mingw32
> which
> >>> >>> contains "bits" and "ext" directories. Would you mind adding that
> to
> >>> >>> the list too?
> >>> >>>
> >>> >>> Thanks!
> >>> >>
> >>> >>
> >>> >
> >>
> >>
>
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