LDC for PowerPC64 on FreeBSD

[Curtis]

I'm attempting to build LDC for PowerPC64 on FreeBSD.  I've been 
initially successful in building, with some hacks, LDC 0.17.5.  
Everything seems to be working, but some issues.

First, when executing the tests, several tests failed do to 
"Unable to unlock mutex".  Secondly, my attempted to build "dub" 
resulted in an app that segfaults with signal 11.  Below is the 
backtrace from debug:

GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, 
and you are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" 
for details.
This GDB was configured as "powerpc64-marcel-freebsd"...(no 
debugging symbols found)...
Core was generated by `dub'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/local/lib/libcurl.so.4...(no debugging 
symbols found)...done.
Loaded symbols for /usr/local/lib/libcurl.so.4
Reading symbols from /lib/libthr.so.3...Reading symbols from 
/usr/lib/debug//lib/libthr.so.3.debug...done.
done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /lib/libm.so.5...Reading symbols from 
/usr/lib/debug//lib/libm.so.5.debug...done.
done.
Loaded symbols for /lib/libm.so.5
Reading symbols from /usr/local/lib/gcc5/libgcc_s.so.1...Error 
while reading shared library symbols:
Dwarf Error: wrong version in compilation unit header (is 4, 
should be 2) [in module /usr/local/lib/gcc5/libgcc_s.so.1]
Reading symbols from /lib/libc.so.7...Reading symbols from 
/usr/lib/debug//lib/libc.so.7.debug...done.
done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /usr/local/lib/libnghttp2.so.14...done.
Loaded symbols for /usr/local/lib/libnghttp2.so.14
Reading symbols from /usr/local/lib/libssl.so.9...done.
Loaded symbols for /usr/local/lib/libssl.so.9
Reading symbols from /usr/local/lib/libcrypto.so.9...done.
Loaded symbols for /usr/local/lib/libcrypto.so.9
Reading symbols from /lib/libz.so.6...Reading symbols from 
/usr/lib/debug//lib/libz.so.6.debug...done.
done.
Loaded symbols for /lib/libz.so.6
Reading symbols from /libexec/ld-elf.so.1...Reading symbols from 
/usr/lib/debug//libexec/ld-elf.so.1.debug...done.
done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x0000000010435d6c in .llrintl ()
[New Thread 51016000 (LWP 101120/<unknown>)]
(gdb) backtrace
#0  0x0000000010435d6c in .llrintl ()
#1  0x000000001043fa38 in .llrintl ()
#2  0x000000001041db88 in .llrintl ()
#3  0x000000001040daec in .llrintl ()
#4  0x00000000103fbdf0 in .inflate_fast ()
#5  0x000000001003c5c0 in ?? ()
(gdb) frame 4
#4  0x00000000103fbdf0 in .inflate_fast ()
(gdb)

Anyone have an idea of what I should look at?  Thanks in advance.