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-rw-r--r--configure.ac42
1 files changed, 42 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 82ad020..9f84b0f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2055,6 +2055,48 @@ case "X-$ASSERTS" in
esac
## ----------------------------------------------------------------------
+## Check if developer warnings should be turned on
+## These are warnings that provide suggestions like gcc's -Wsuggest-attribute.
+## They do not indicate code problems.
+##
+## Note that developers don't need to build with these regularly. They
+## are just handy to check once in a while (before releases, etc.).
+##
+AC_MSG_CHECKING([enable developer warnings])
+AC_ARG_ENABLE([developer-warnings],
+ [AS_HELP_STRING([--enable-developer-warnings],
+ [Determines whether developer warnings will be
+ emitted. These are usually performance suggestions
+ (e.g. -Wsuggest-attribute) and do not flag poor code
+ quality.
+ [default=no]
+ ])],
+ [DEV_WARNINGS=$enableval])
+
+## Set default
+if test "X-$DEV_WARNINGS" = X- ; then
+ DEV_WARNINGS=no
+fi
+
+## Allow this variable to be substituted in
+## other files (src/libhdf5.settings.in, etc.)
+AC_SUBST([DEV_WARNINGS])
+
+case "X-$DEV_WARNINGS" in
+ X-yes)
+ H5_CFLAGS="$H5_CFLAGS $DEVELOPER_WARNING_CFLAGS"
+ AC_MSG_RESULT([yes])
+ ;;
+ X-no)
+ H5_CFLAGS="$H5_CFLAGS $NO_DEVELOPER_WARNING_CFLAGS"
+ AC_MSG_RESULT([no])
+ ;;
+ *)
+ AC_MSG_ERROR([Unrecognized value: $DEV_WARNINGS])
+ ;;
+esac
+
+## ----------------------------------------------------------------------
## Check if the compiler should use profiling flags/settings
##
AC_MSG_CHECKING([profiling])