configure.ac (with-build-config): Document.

* configure.ac (with-build-config): Document.  Handle without.
Handle missing argument.
* configure: Rebuilt.

From-SVN: r151435

1 files changed, 14 insertions, 0 deletions

diff --git a/configure b/configure
index c8f2fcf..3b6cd2d 100755
--- a/configure
+++ b/configure
@@ -769,6 +769,7 @@ enable_objc_gc
 with_build_sysroot
 with_debug_prefix_map
 enable_bootstrap
+with_build_config
 enable_serial_configure
 with_build_time_tools
 enable_maintainer_mode
@@ -1498,6 +1499,8 @@ Optional Packages:
                           use sysroot as the system root during the build
   --with-debug-prefix-map='A=B C=D ...'
                              map A to B, C to D ... in debug information
+--with-build-config='NAME NAME2...'
+                          Use config/NAME.mk build configuration
   --with-build-time-tools=PATH
                           use given path to find target tools during the build
 
@@ -6583,6 +6586,17 @@ esac
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for default BUILD_CONFIG" >&5
 $as_echo_n "checking for default BUILD_CONFIG... " >&6; }
+
+
+# Check whether --with-build-config was given.
+if test "${with_build_config+set}" = set; then :
+  withval=$with_build_config; case $with_build_config in
+   yes) with_build_config= ;;
+   no) with_build_config= BUILD_CONFIG= ;;
+   esac
+fi
+
+
 if test "x${with_build_config}" != x; then
   BUILD_CONFIG=$with_build_config
 else