After doing a fresh fossil clone and open of the source code, I get the below build failure on mac os x 10.6:
<pre>
gcc -g -Os -Wall -DFOSSIL_ENABLE_SSL  -I. -I./src -o ./obj/style.o -c style_.c
style_.c: In function ‘cgi_append_default_css’:
style_.c:521: error: storage size of ‘i’ isn’t known
style_.c:521: warning: unused variable ‘i’
style_.c: In function ‘page_style_css’:
style_.c:533: error: storage size of ‘i’ isn’t known
style_.c:533: warning: unused variable ‘i’
style_.c:532: warning: unused variable ‘zCSSdef’
make: *** [obj/style.o] Error 1
</pre>