Add files for adding warning flags for clang compilers in autotools

configure.

1 files changed, 52 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index db0cddf..50f823e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -289,6 +289,58 @@ while test -n "$hname"; do
   test "$hname_tmp" = "$hname" && break
 done
 
+##
+## Enable/disable sanitizer checks for clang compilers, initially address sanitizer
+##
+AC_MSG_CHECKING([for clang sanitizer checks])
+AC_ARG_ENABLE([sanitize-checks],
+              [AS_HELP_STRING([--enable-sanitize-checks=address],
+                              [(clang/clang++ compilers only) Enable sanitize checks.
+                               Address is useful for detecting issues dealing with 
+                               memory. See AddressSanitizer in config/sanitizer/README.md
+                               for more information.
+                               [default=none]
+                               ])],
+              [CLANG_SANITIZE_CHECKS=$enableval])
+
+# Set default
+if test "X-$CLANG_SANITIZE_CHECKS" = X- ; then
+  CLANG_SANITIZE_CHECKS=none
+fi
+
+if test "X$CC_BASENAME" = "Xclang"; then
+  AC_SUBST([CLANG_SANITIZE_CHECKS])
+
+  ## These are all the packages that use H5*_DEBUG.
+  ## There is no harm in specifying a package not in this list;
+  ## you'll just get an unused H5<pkg>_DEBUG symbol.
+  ##
+  ## Some packages that define debug checks or output are
+  ## too specialized or have huge performance hits. These
+  ## are not listed in the "all" packages list.
+  ##
+  ##all_packages="Address"
+  
+  case "X-$CLANG_SANITIZE_CHECKS" in
+    X-no|X-none)
+      CLANG_SANITIZE_CHECKS=none
+      CLANG_SANITIZE_LIST=
+      ;;
+    *)
+      CLANG_SANITIZE_LIST=$CLANG_SANITIZE_CHECKS
+      ;;
+  esac
+  AC_MSG_RESULT([$CLANG_SANITIZE_CHECKS])
+
+  ## Define H5*_DEBUG symbols that control package output
+  ## NOTE: No sanity checking done here!
+  if test -n "$CLANG_SANITIZE_LIST"; then
+    H5_CFLAGS="$H5_CFLAGS -fno-omit-frame-pointer"
+    for sanitizer in `echo $CLANG_SANITIZE_LIST`; do
+      H5_CFLAGS="$H5_CFLAGS -fsanitize=${sanitizer}"
+    done
+  fi
+fi
 
 ## ----------------------------------------------------------------------
 ## Determine build mode (debug, production, clean).