dtrace failure in xorg

[Chuck Robey]

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I'm trying to build some software that's making use of dtrace.  Actually, for my
own purposes, I'm trying to build the HEAD version of xorg.  There's a error
that looks like:

make  all-am
/usr/sbin/dtrace -G -C -o dtrace-dix.o -s ../dix/Xserver.d .libs/*.o
dtrace: failed to compile script ../dix/Xserver.d: "/usr/lib/dtrace/psinfo.d",
line 37: syntax error near "uid_t"
*** Error code 1

Now, if this were a regular C file, this would be simplicity itself, either
looking some a define that was covering the definition of the type. or adding an
include to bring that def in, however, I haven't any experience with these .d
files.  Could anybody give me either a pointer to a description of this,  or
maybe give me a short description here to how they should be treated as opposed
to .c files?

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