[MXE MinGW] miscompiled gcc for --enable64?

[Philip Nienhuis]

With a cross-built mxe-octave with 64-bit indexing (--enable64), building OF
packages fails because g++, gcc and c++ all bail out with the message:

"C:\Programs\.....\bin\g++.exe is not a valid Win32 application."  
(of course, similarly for c++.exe and gcc.exe) 

In addition, cc.exe seems to be missing.

Running these commands in an MSYS shell gives:

address@hidden /c/programs/octave/octave64-3.9.0+-4.1.0+/bin
$ gcc
sh: ./gcc: Bad file number
address@hidden /c/programs/octave/octave64-3.9.0+-4.1.0+/bin
$ ls -l gcc
-rwxr-xr-x 1 philip Administrators 0 Dec  5 21:02 gcc

(funny, I'm not administrator but "user". Running MSYS as administrator
doesn't make a difference though, I get the same issues)

Can someone confirm this?


__run_test_suite__ with 3.9.0+ (64bit indexing) gives:
Summary:

  PASS     11562
  FAIL        12
  XFAIL        9
  SKIPPED     65
(similar or equal to what I reported a few months ago on the task tracker
(http://savannah.gnu.org/task/?13313).


An older cross-built 64-bit indexing mingw Octave (Oct. 31; built on another
machine) runs fine on the same box; gcc.exe, cc.exe, c++.exe and g++.exe
yield meaningful messages.


My build system: Mageia-4 64; mxe-octave: 8657bb199f09 tip @ (zeromq: update
to v4.0.5)
./configure --enable-64     (and I've manually adapted octave.mk for 4.1.0+
/ 3.9.0+ checksums)

Host system:  Windows 7 Prof. 64-bit

Thanks,

Philip




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