Enabling nested function?

I'm trying to "make" FUSE, and i keep getting this error
fuse.c: In function 'curr_time':
fuse.c:1183: error: nested functions are disabled, use -fnested-functions to re-enable
fuse.c:1183: error: syntax error before 'clockid'
fuse.c:1184: warning: implicit declaration of function 'clock_gettime'
fuse.c:1184: error: 'clockid' undeclared (first use in this function)
fuse.c:1184: error: (Each undeclared identifier is reported only once
fuse.c:1184: error: for each function it appears in.)
fuse.c:1186: error: 'CLOCK_REALTIME' undeclared (first use in this function)
make[1]: * [fuse.lo] Error 1
make: * [all-recursive] Error 1
i tried -fnested-function but i get
Macintosh-5:~ alexcaballero$ -fnested-functions
-bash: -fnested-functions: command not found

Cross posted in the Mac OS X Technologies -> Unix forum
<http://discussions.apple.com/thread.jspa?messageID=9073766&tstart=0#9073766>

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Macintosh-5:~ alexcaballero$ -fnested-functions
-bash: -fnested-functions: command not found
so how do i enable them?

Well the thing is that I did install MacFuse, yet the directions I got told me I had to download FUSE as well. I'm trying to mount my Gmail account on my desktop.
So were these instructions Mac specific? Or where they for Unix/Linux systems running Fuse? Is there a web URL you can give?
Oh yea, where did you download your Fuse sources from? Just in case someone whats to look at a copy.
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