[mythtv] Broken configure due to sed quoting?

[Nigel Pearson]

has_header is failing on Mac OS 10.5, due to this change in [14800]:

-HPATHS="$HPATHS `echo $INCL | sed s/$libdir_name/include/g` "
+HPATHS="$HPATHS `echo $INCL | sed 's/$libdir_name/include/g'` "

sh -x reveals:

+ INCL='/Users/nigel/.osx-packager/build/lib /usr/local/lib'
++ echo /Users/nigel/.osx-packager/build/lib /usr/local/lib
++ sed 's/$libdir_name/include/g'
+ HPATHS='/usr/local/include /usr/include /usr/include/g++-v3 /usr/ 
X11R6/include /Users/nigel/.osx-packager/build/lib /usr/local/lib '



Now, obviously I can work around this, but does anyone
have any idea why that sed is silently failing here?

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