Re: Problem with configure when trying to build gcc 5.3

>From: Keith Marshall <[email protected]>
>Sent: Sunday, January 8, 2017 7:28 AM
... snip ...
>> config.status, however, contained an option list that had no --build
>> option. At that point, I tried the compile step, using tee to save
>> the console display. It eventually crashed with this message:
>>
>> C:\MinGW\mingw32\bin\ld.exe: cannot find dllcrt2.o: No such file or directory

Hmm.  dllcrt2.o is a component of mingwrt; for me it lives in
'/home/keith/mingw32/lib`, (under the '/home/keith/mingw32'
prefix, where my Linux hosted mingw32-gcc cross-compiler is
installed). 

... snip ...

>I've never tried to build GCC natively on Windows; the whole
>process is much too painful!  Perhaps you need something like
>the stage-by-stage procedure used for my cross-compiler?  Or
>maybe, a 'make bootstrap' procedure, (for which the mingw-pkg
>specification isn't set up, in the 'mingw-pkg compile' case)?

There should be a clue to the dllcrt2.0 problem in Earnie's build
system that was used for the 4.8.1 release - when I hack it to
build 5.3.0, I have problems with make stage, as I previously mentioned,
but the the make compile step completes with no dllcrt2.o problem.

I did a test builds of gcc 5.3.0 using both Earnie's system and
mingw-pkg. In order to make a better comparison, I modified
the build options in gcc-5.3.0-mingw32.pkgspec to be an exact
duplicate of the ones that I lifted from the package.ini file in 
Earnie's 4.8.1 build. The builds had the same result as before -
The compile step succeeded in Earnie's system and failed
with the dllcrt.o problem with the mingw-pkg system

I did a diff of the config.log and config.status files that
were produced by the two build systems. I found that the only
difference was  the path relationship between the build
and source directories, which is a trivial difference.

>From that, I conclude that mingw-pkg in a native Windows
environment is doing something that causes problems for
make; I will need to do some more analysis to find out what
is happening. It would help if I knew what command line that
mingw-pkg  creates for  make in the compile stage, but 
'sh -vx' should be useful there.


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