>> Could be a longshot - but might this be related to an issue I reported
>> building MinGW PCRE a month or so ago. In order to get PCRE to link, I
>> had
>> to rename the actual libpcre.a to libpcre.a.old (i.e. get rid of it) and
>> then rename libpcre.dll.a to libpcre.a. I can't remember what the error
>> message was.
>

I followed your trick and now compilation is OK.

Just a remark however (maybe it's the key for the porblem): when renaming
the old 'liblapack.a', Windows asked me a confirmation, arguing that the
file is a system file.

Thank you for the help,

Bertrand