diff options
Diffstat (limited to 'm4/pdns_init_auto_vars.m4')
| -rw-r--r-- | m4/pdns_init_auto_vars.m4 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/m4/pdns_init_auto_vars.m4 b/m4/pdns_init_auto_vars.m4 new file mode 100644 index 0000000..cf93ffd --- /dev/null +++ b/m4/pdns_init_auto_vars.m4 @@ -0,0 +1,31 @@ +dnl +dnl Check for support for enabling initialization of automatic variables +dnl + +AC_DEFUN([PDNS_INIT_AUTO_VARS],[ + AC_MSG_CHECKING([whether to enable initialization of automatic variables]) + AC_ARG_ENABLE([auto-var-init], + AS_HELP_STRING([--enable-auto-var-init],[enable initialization of automatic variables (zero, pattern) @<:@default=no@:>@]), + [enable_initautovars=$enableval], + [enable_initautovars=no], + ) + AC_MSG_RESULT([$enable_initautovars]) + + AS_IF([test "x$enable_initautovars" = "xyes"], [ + [enable_initautovars=zero] + ]) + + AS_IF([test "x$enable_initautovars" = "xzero" ], [ + gl_COMPILER_OPTION_IF([-ftrivial-auto-var-init=zero], [ + CFLAGS="-ftrivial-auto-var-init=zero $CFLAGS" + CXXFLAGS="-ftrivial-auto-var-init=zero $CXXFLAGS" + ]) + ]) + + AS_IF([test "x$enable_initautovars" = "xpattern" ], [ + gl_COMPILER_OPTION_IF([-ftrivial-auto-var-init=pattern], [ + CFLAGS="-ftrivial-auto-var-init=pattern $CFLAGS" + CXXFLAGS="-ftrivial-auto-var-init=pattern $CXXFLAGS" + ]) + ]) +]) |