[bug-gnu-libiconv] [Win32] Can't build 1.12 with MinGW in MSYS shell

[Sisyphus]

Hi,
With version 1.11 of libiconv, building in the MSYS shell with MinGW is as
simple as running './configure' followed by 'make'. But with libiconv-1.12,
the 'make' step fails as follows:

make[1]: Entering directory `/c/_32/comp/libiconv-1.12/lib'
windres `/bin/sh ./../windows/windres-options --escape 1.12` -i
./../windows/libiconv.rc -o libiconv.res --output-format=coff
sed: -e expression #2, char 32: Extra characters after command
sed: -e expression #2, char 55: Extra characters after command
sed: -e expression #2, char 78: Extra characters after command
c:\home\rob\mingw_vista\i686-pc-mingw32\bin\windres.exe:
./../windows/libiconv.rc:6: syntax error
make[1]: *** [libiconv.res] Error 1
make[1]: Leaving directory `/c/_32/comp/libiconv-1.12/lib'
make: *** [all] Error 2

Attached is the config.log of the attempted build. (It's from an attempt to
build a shared lib, but the additional args given to configure don't have
any affect on the problem.)

Cheers,
Rob

config.log
Description: Binary data