optimization: replace modulo by a power of two with a bitwise AND

[fw/sdcc] / configure.in

diff --git a/configure.in b/configure.in
index 2d7991b3755e6825b4b98762408b9c0a7bdb396f..91c88880b969084e3e1633e38e2a46cc30fb4bb2 100755 (executable)
--- a/configure.in
+++ b/configure.in
@@ -156,7 +156,7 @@ case ifelse($2,,"[$]$1",$2) in
 # - convert the first slash
 # - replace a slash with a double-backslash
 # *\\*) $1=`echo "[$]$1" | sed 's,\(.\)[[\\/]][[\\/]]*,\1\\\\,g'` ;;
- *\\*) $1=`echo "[$]$1" | sed 's,[[\\/]][[\\/]]*,\1\\\\\\\\,g'` ;;
+ *\\*) $1=`echo "[$]$1" | sed 's,[[\\/]][[\\/]]*,\\\\\\\\,g'` ;;
 
 # if the path contains slashes, also turn backslashes into slashes
  *) $1=`echo "[$]$1" | sed 's,\(.\)[[\\/]][[\\/]]*,\1/,g'` ;;
@@ -634,9 +634,9 @@ fi
 AC_DEFINE_UNQUOTED(OPT_ENABLE_LIBGC, $OPT_ENABLE_LIBGC)
 
 #remove duplicates
-cat ports.all | uniq >ports
+uniq ports.all ports
 mv ports ports.all
-cat ports.build | uniq >ports
+uniq ports.build ports
 mv ports ports.build
 
 # Generating output files