[yocto] Are Windows SDKs (mingw layer) supposed to work?

Burton, Ross ross.burton at intel.com
Tue Mar 6 02:39:25 PST 2018 

Have you tried using 2.4 to identify when it broke?  Clearly we need to
extend the selftest so the mingw SDK is actually tested...

Ross

On 6 March 2018 at 05:32, Reyna, David <david.reyna at windriver.com> wrote:

> Hi all,
>
>
>
> I am trying to enable a customer for using YP SDKs on Windows. It
> apparently is supposed to work, but I am unable to get past fatal errors.
>
>
>
> I have looked for documentation at the YP site and the meta-mingw repo,
> but to no avail.
>
>
>
> 1) My project is a simple default “qemux86-64” with YP-2.5 HEAD, with the
> latest “meta-mingw” layer added and <SDKMACHINE ?= "i686-mingw32">.
>
>
>
> The SDK builds fine and I get the “*.xz” generated file.
>
>
>
> 2) However, when I use 7ZIP to extract it on my Windows host (which is
> recommended for XY files), I get several fatal issues.
>
>
>
>   (a) I get more than a hundred errors “Can not create symbolic link:
> Access is denied”.
>
>
>
> While I do not care about the ones for the bin tools in the sysroot, I do
> care that most of the cross toolchain EXE files are thusly broken, plus
> many of the libraries and header files in the sysroot.
>
>
>
> Am I missing a step?
>
>
>
> If I in fact extract this file on my Linux host, I can directly see that
> it is full of symlinks! Why are there symlinks in a Windows-specific
> tarball?
>
>
>
>   (b) If I attempt to build a simple C file from the shell in the SDK
> environment, I either get a silent failure (for the 32-bit toolchain) or a
> blatant error as per:
>
>
>
>   x86_64-poky-linux-gcc: error: CreateProcess: No such file or directory
>
>
>
> I am assuming this error arises from the broken symlinks, specifically all
> those broken files in:
>
>
>
>   SDKDIR\sysroots\i686-pokysdk-mingw32\usr\bin\x86_64-poky-linux-gnux32
> (all zero length):
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-
> addr2line.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-ar.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-as.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-c++.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-c++
> filt.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-cpp.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-
> elfedit.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-g++.exe
>
> 03/04/2018  08:29 PM                 0 x86_64-poky-linux-gnux32-gcc-ar.exe
>
> …
>
>
>
>   SDKDIR\sysroots\i686-pokysdk-mingw32\usr\libexec\x86_64-
> poky-linux\gcc\x86_64-poky-linux\7.3.0\*
>
> 03/04/2018  08:29 PM                 0 ar.exe
>
> 03/04/2018  08:29 PM                 0 as.exe
>
> 02/23/2018  03:48 PM        21,962,568 cc1.exe
>
> 02/23/2018  03:48 PM        23,256,499 cc1plus.exe
>
> 02/23/2018  03:48 PM           812,905 collect2.exe
>
> 03/04/2018  08:29 PM                 0 cpp.exe
>
> 03/04/2018  08:29 PM                 0 gcc.exe
>
> 03/04/2018  08:29 PM                 0 ld.exe
>
> 02/23/2018  03:48 PM         1,101,508 lto-wrapper.exe
>
> 03/04/2018  08:29 PM                 0 nm.exe
>
> 03/04/2018  08:29 PM                 0 objcopy.exe
>
> 03/04/2018  08:29 PM                 0 objdump.exe
>
> 03/04/2018  08:29 PM                 0 ranlib.exe
>
> 03/04/2018  08:29 PM                 0 real-ld.exe
>
> 03/04/2018  08:29 PM                 0 strip.exe
>
>
>
> 3) I have done ‘–v’ and ProcessMonitor tracing, and it all seems to come
> down to these broken links.
>
>
>
> 4) I see that Yang Wang had the same question (below), and I have not seen
> an answer.
>
>
>
> Please help,
>
> David Reyna
>
>
>
>
>
> *From:* yocto-bounces at yoctoproject.org [mailto:yocto-bounces@
> yoctoproject.org] *On Behalf Of *Wang, Yang Y
> *Sent:* Thursday, August 17, 2017 11:41 PM
> *To:* Yocto
> *Subject:* [yocto] toolchain from meta-mingw gets error
> x86_64-poky-linux-gcc: error: CreateProcess: No such file or directory
>
>
>
> I’m using Yocto krogoth and meta-mingw to build the meta-toolchain for
> windows system. The build is quite smooth.
>
> I extract the built toolchain poky-glibc-x86_64-meta-
> toolchain-core2-64-toolchain-2.1.tar.xz on windows to c:/yocto2.1
>
> However when I try to run a simple build from windows cmd console after I
> set up the environment-setup-core2-64-poky-linux.bat, I got the following
> error.
>
> By further check, it seems the error is related to the symbolic link in
> folder sysroots/x86_64-pokysdk-mingw32/usr/bin/x86_64-poky-
> linux/../../libexec/x86_64-poky-linux/gcc/x86_64-poky-linux/5.3.0/ where
> the as, ar etc binutiles are the symbolic link to the file in ->
> ../../../../../bin/x86_64-poky-linux/
>
> However on windows, such “../../” symbolic link can’t work. Simply execute
> the symbolic ‘as.exe’ will get error “Access is denied.”
>
>
>
> Anyone has the idea on how to solve this issue?
>
>
>
> c:\Yocto2.1>%CC% c:/temp/temp/temp/test.c
>
> x86_64-poky-linux-gcc: error: CreateProcess: No such file or directory
>
>
>
> c:\Yocto2.1>%CC% c:/temp/temp/temp/test.c --verbose
>
> Using built-in specs.
>
> COLLECT_GCC=x86_64-poky-linux-gcc
>
> COLLECT_LTO_WRAPPER=c:/yocto2.1/sysroots/x86_64-pokysdk-
> mingw32/usr/bin/x86_64-poky-linux/../../libexec/x86_64-
> poky-linux/gcc/x86_64-poky-linux/5.3.0/lto-wrapper.exe
>
> Target: x86_64-poky-linux
>
> ….
>
> GNU C11 (GCC) version 5.3.0 (x86_64-poky-linux)
>
>         compiled by GNU C version 5.3.0, GMP version 6.1.0, MPFR version
> 3.1.3, MPC version 1.0.3
>
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
>
> Compiler executable checksum: 4b6c2d45c1da5393637e027504b4f2dd
>
> COLLECT_GCC_OPTIONS='--sysroot=c:\Yocto2.1\\sysroots\core2-64-poky-linux'
> '-m64' '-march=core2' '-mtune=core2' '-msse3' '-mfpmath=sse' '-v'
>
> c:/yocto2.1/sysroots/x86_64-pokysdk-mingw32/usr/bin/x86_
> 64-poky-linux/../../libexec/x86_64-poky-linux/gcc/x86_64-poky-linux/5.3.0/as.exe
> -v --64 -o C:\Users\ywang30\AppData\Local\Temp\ccREtk4o.o
> C:\Users\ywang30\AppData\Local\Temp\ccbqVhdf.s
>
> x86_64-poky-linux-gcc: error: CreateProcess: No such file or directory
>
>
>
>
>
> c:\Yocto2.1> c:/yocto2.1/sysroots/x86_64-pokysdk-mingw32/usr/bin/x86_
> 64-poky-linux/../../libexec/x86_64-poky-linux/gcc/x86_64-
> poky-linux/5.3.0/as.exe
>
> Access is denied.
>
>
>
> c:\Yocto2.1>ls  c:/yocto2.1/sysroots/x86_64-pokysdk-mingw32/usr/bin/x86_
> 64-poky-linux/../../libexec/x86_64-poky-linux/gcc/x86_64-poky-linux/5.3.0/
> -l
>
> total 67783
>
> lrwxrwxrwx 1 ywang30 Domain Users       61 Aug 18 12:05 ar.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-ar.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       61 Aug 18 12:05 as.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-as.exe
>
> -rwxr-xr-x 1 ywang30 Domain Users 21761467 Aug 18 11:53 cc1.exe
>
> -rwxr-xr-x 1 ywang30 Domain Users 22986939 Aug 18 11:53 cc1plus.exe
>
> -rwxr-xr-x 1 ywang30 Domain Users  1658365 Aug 18 11:53 collect2.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       62 Aug 18 12:05 cpp.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-cpp.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       62 Aug 18 12:05 gcc.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-gcc.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       61 Aug 18 12:05 ld.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-ld.exe
>
> -rwxr-xr-x 1 ywang30 Domain Users   129591 Aug 18 11:53 liblto_plugin-0.dll
>
> -rw-r--r-- 1 ywang30 Domain Users    53040 Aug 18 11:53 liblto_plugin.dll.a
>
> -rw-r--r-- 1 ywang30 Domain Users     1381 Aug 18 11:53 liblto_plugin.la
>
> -rwxr-xr-x 1 ywang30 Domain Users  1881552 Aug 18 11:53 lto-wrapper.exe
>
> -rwxr-xr-x 1 ywang30 Domain Users 20913549 Aug 18 11:53 lto1.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       61 Aug 18 12:05 nm.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-nm.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       66 Aug 18 12:05 objcopy.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-objcopy.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       66 Aug 18 12:05 objdump.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-objdump.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       65 Aug 18 12:05 ranlib.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-ranlib.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       61 Aug 18 12:05 real-ld.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-ld.exe
>
> lrwxrwxrwx 1 ywang30 Domain Users       64 Aug 18 12:05 strip.exe ->
> ../../../../../bin/x86_64-poky-linux/x86_64-poky-linux-strip.exe
>
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