Windows broken

[lonetiger at gmail.com]

Hi Simon,

What happens when you try to compile that simple test with the bundled gcc?

Could you also run it through strace, this will force msys2 not to swallow errors from the OS.

Should you get an exception dialog then rm -rf inplace/mingw and rerun configure (I assume you’re on a recent revision).

If none of the above give a clue, you could try ./configure --enable-distro-toolchain, this will have it skip the bundled GCC
And use any installed by msys2. If this work then try rm’ing the GHC-tarballs folder and the inplace/mingw folder and try again
With –enable-tarballs-autodownloads.

Tamar.

From: Simon Peyton Jones via ghc-devs
Sent: Thursday, June 29, 2017 00:35
To: ghc-devs
Subject: Windows broken

Help please!
Suddenly my Windows build has stopped working.   See below.  What should I do?  I’m totally stuck.
This has never happened before.
I get this:
GHC path canonicalised to: c:/fp/ghc-8.0.2/bin/ghc
checking build system type... x86_64-pc-msys
checking host system type... x86_64-pc-msys
checking target system type... x86_64-pc-msys
Build platform inferred as: x86_64-unknown-mingw32
Host platform inferred as: x86_64-unknown-mingw32
Target platform inferred as: x86_64-unknown-mingw32
GHC build  : x86_64-unknown-mingw32
GHC host   : x86_64-unknown-mingw32
GHC target : x86_64-unknown-mingw32
LLVM target: x86_64-unknown-mingw32
checking for path to top of build tree... C:/code/HEAD
configure: Checking for Windows toolchain tarballs...
configure: Extracting Windows toolchain from archives (may take a while)...
configure: In-tree MingW-w64 tree created
configure: Making in-tree perl tree
configure: In-tree perl tree created
checking whether the C compiler works... no
configure: error: in `/c/code/HEAD':
configure: error: C compiler cannot create executables
See `config.log' for more details
Something wrong with the gcc.exe?  Config.log has this
gcc version 6.3.0 (Rev2, Built by MSYS2 project) 
configure:4950: $? = 0
configure:4939: C:/code/HEAD/inplace/mingw/bin/gcc.exe -V >&5
gcc.exe: error: unrecognized command line option '-V'
gcc.exe: fatal error: no input files
compilation terminated.
configure:4950: $? = 1
configure:4939: C:/code/HEAD/inplace/mingw/bin/gcc.exe -qversion >&5
gcc.exe: error: unrecognized command line option '-qversion'; did you mean '--version'?
gcc.exe: fatal error: no input files
compilation terminated.
configure:4950: $? = 1
configure:4970: checking whether the C compiler works
configure:4992: C:/code/HEAD/inplace/mingw/bin/gcc.exe    conftest.c  >&5
configure:4996: $? = 1
configure:5034: result: no
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "The Glorious Glasgow Haskell Compilation System"
| #define PACKAGE_TARNAME "ghc-8.3"
| #define PACKAGE_VERSION "8.3"
| #define PACKAGE_STRING "The Glorious Glasgow Haskell Compilation System 8.3"
| #define PACKAGE_BUGREPORT "glasgow-haskell-bugs at haskell.org"
| #define PACKAGE_URL ""
| /* end confdefs.h.  */
| 
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:5039: error: in `/c/code/HEAD':
configure:5041: error: C compiler cannot create executables

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