diff --git a/bin/caam b/bin/caam
index 4e1ffe7..f1db61a 100755
--- a/bin/caam
+++ b/bin/caam
@@ -71,6 +71,7 @@
 	Usage: $myname [caam-options] [configure-options]
 	Available caam-options:
 	  -m		Do make only, not calling configure
+	  -b		Bashism
 	  -c		Do configure only, not calling make
 	  -g		Call "gmake" instead of default "make"
 	  -cmake	Call "cmake" instead of default "./configure"
@@ -128,6 +129,7 @@
     -j)		shift; CAAM_MKOPT="$MKOPT${MKOPT:+ }-j $1";;
     -k)		CAAM_MKOPT="$CAAM_MKOPT${CAAM_MKOPT:+ }-k";;
 #    -CC)	setcc=1 ;;
+    -b)		SHELL=`which bash`; CONFIG_SHELL=$SHELL;;
     -c)		DO="echo done";;
     -g)		CAAM_MAKE=gmake ;;
     -cmake)	CAAM_CFG=cmake; builddir=$build_subdir ;;
@@ -199,6 +201,7 @@
 LD_RUN_PATH="$lp"
 PKG_CONFIG_PATH=$pcp
 export PKG_CONFIG_PATH
+export CONFIG_SHELL
 
 # Setup gcc wrapper environment
 # point to gcc wrapper