bc: use a configure command line more like other packages

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@12167 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter08/bc.xml

@@ -43,7 +43,7 @@
 
     <para>Prepare Bc for compilation:</para>
 
-<screen><userinput remap="configure">PREFIX=/usr CC=gcc ./configure.sh -G -O3</userinput></screen>
+<screen><userinput remap="configure">CC=gcc ./configure --prefix=/usr -G -O3</userinput></screen>
 
     <variablelist>
       <title>The meaning of the configure options:</title>