configure: allow variables to contain quotes.

* configure: When generating the assignment that stores the
value of the command line variable into the corresponding
shell variable, interpolate $val between single quotes in such
a way that single quotes occurring in $val are replaced by the
pattern '\''. Thus, variables may contain any character
whatsoever.

1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index cc6d44a8..250cb772 100755
--- a/configure
+++ b/configure
@@ -225,7 +225,7 @@ while [ $# -gt 0 ] ; do
     exit 1
   fi
 
-  eval "$var='$val'"
+  eval "$var='$(printf "%s" "$val" | sed -e "s/'/'\\\\''/g")'"
 
   eval "var_given_exists=\${${var}_given+y}"