> So the point is why Linux/mingw have a lot of things in bss while 4.8 (with
> the same gcc of linux debian 3.0 and 5.0 with the same gcc 3.2.1 of mingw)
> put them in Data ?
Maybe Linux is using the "-fconserve-space" g++ option. From the info pages:
`-fconserve-space' Put uninitialized or runtime-initialized global variables into the common segment, as C does. This saves space in the executable at the cost of not diagnosing duplicate definitions. If you compile with this flag and your program mysteriously crashes after `main()' has completed, you may have an object that is being destroyed twice because two definitions were merged.
This option is no longer useful on most targets, now that support has been added for putting variables into BSS without making them common.
That last paragraph suggests that maybe FreeBSD's compiler is configured slightly wrong, such that it does not do what the paragraph says. In any case, try adding this option to your compiles on FreeBSD and see if it helps.
This exactly solve the problem :-)
The compilation is fine, the exe is now 2mb (like linux).
/source_of_lonejoy/src# ll -h lonewolf -rwxr-xr-x 1 root wheel 2M Apr 12 22:24 lonewolf
Using such lines in Makefile.unix: CFLAGS = -pipe -funsigned-char -fconserve-space -O -DNO_DEBUG CXXFLAGS= -pipe -funsigned-char -fconserve-space -O -DNO_DEBUG
did the job.
Now we have to understand why the Linux version of the same gcc doesn't need this option to make the exe so small :-)
Thanks very much.
Best Regards, Gianmarco Giovannelli , "Unix expert since yesterday" http://www.gufi.org/~gmarco
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