configure.ac: Don't define ENABLE_CHECKING whenever --enable-checking is seen...

	* configure.ac: Don't define ENABLE_CHECKING whenever
	--enable-checking is seen, instead use similar --enable-checking=yes
	vs. --enable-checking=release default as gcc/ subdir has and
	define ENABLE_CHECKING if ENABLE_CHECKING is defined in gcc/.
	Define ENABLE_VALGRIND_CHECKING if requested.
	* lex.c (new_buff): If ENABLE_VALGRIND_CHECKING, put _cpp_buff
	struct first in the allocated buffer and result->base after it.
	(_cpp_free_buff): If ENABLE_VALGRIND_CHECKING, free buff itself
	instead of buff->base.
	* config.in: Regenerated.
	* configure: Regenerated.

From-SVN: r196333

1 files changed, 42 insertions, 4 deletions

diff --git a/libcpp/configure b/libcpp/configure
index d07aed3..f21b361 100755
--- a/libcpp/configure
+++ b/libcpp/configure
@@ -1333,7 +1333,11 @@ Optional Features:
   --enable-werror-always  enable -Werror despite compiler version
   --disable-rpath         do not hardcode runtime library paths
   --enable-maintainer-mode enable rules only needed by maintainers
-  --enable-checking      enable expensive run-time checks
+  --enable-checking[=LIST]
+                          enable expensive run-time checks. With LIST, enable
+                          only specific categories of checks. Categories are:
+                          yes,no,all,none,release. Flags are: misc,valgrind or
+                          other strings
   --enable-canonical-system-headers
                           enable or disable system headers canonicalization
 
@@ -7083,20 +7087,54 @@ else
 fi
 
 
+# Enable expensive internal checks
+is_release=
+if test -f $srcdir/../gcc/DEV-PHASE \
+   && test x"`cat $srcdir/../gcc/DEV-PHASE`" != xexperimental; then
+  is_release=yes
+fi
+
 # Check whether --enable-checking was given.
 if test "${enable_checking+set}" = set; then :
-  enableval=$enable_checking;
+  enableval=$enable_checking; ac_checking_flags="${enableval}"
+else
+
+# Determine the default checks.
+if test x$is_release = x ; then
+  ac_checking_flags=yes
 else
-  enable_checking=no
+  ac_checking_flags=release
+fi
 fi
 
+IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="$IFS,"
+for check in release $ac_checking_flags
+do
+	case $check in
+	# these set all the flags to specific states
+	yes|all) ac_checking=1 ; ac_valgrind_checking= ;;
+	no|none|release) ac_checking= ; ac_valgrind_checking= ;;
+	# these enable particular checks
+	misc) ac_checking=1 ;;
+	valgrind) ac_valgrind_checking=1 ;;
+	# accept
+	*) ;;
+	esac
+done
+IFS="$ac_save_IFS"
 
-if test $enable_checking != no ; then
+if test x$ac_checking != x ; then
 
 $as_echo "#define ENABLE_CHECKING 1" >>confdefs.h
 
 fi
 
+if test x$ac_valgrind_checking != x ; then
+
+$as_echo "#define ENABLE_VALGRIND_CHECKING 1" >>confdefs.h
+
+fi
+
 # Check whether --enable-canonical-system-headers was given.
 if test "${enable_canonical_system_headers+set}" = set; then :
   enableval=$enable_canonical_system_headers;