I recently upgraded to Mac OS X 10.7 Lion, but regretted it when Poly/ML
seemed to stop working, at least for building HOL.  This is *with* the
current version of Xcode, 4.1, installed.  I have Poly/ML version 5.3
installed (yes it's old, but it worked, until now).

When running

poly < tools/smart-configure.sml

I saw
. . .
Making tools/mllex/mllex.exe.
Poly/ML 5.3 Release
> # ld: library not found for -lcrt1.10.6.o
collect2: ld returned 1 exit status
Failed to build mllex.

But I found a workaround.

cd /usr/lib
sudo ln -s /Developer/SDKs/MacOSX10.6.sdk/usr/lib/crt1.10.6.o .

With this change, HOL builds with Poly/ML.

Perhaps this can help someone else.

Peter
-- 
"In Your majesty ride prosperously
because of truth, humility, and righteousness;
and Your right hand shall teach You awesome things." (Psalm 45:4)
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