Add build option to disable usage of scv on powerpc

[platform/upstream/glibc.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index f2588f3..34ecbba 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -470,6 +470,14 @@ AC_ARG_ENABLE([cet],
              [enable_cet=$enableval],
              [enable_cet=$libc_cv_compiler_default_cet])
 
+AC_ARG_ENABLE([scv],
+             AC_HELP_STRING([--disable-scv],
+                            [syscalls will not use scv instruction, even if the kernel supports it, powerpc only]),
+             [use_scv=$enableval],
+             [use_scv=yes])
+
+AS_IF([[test "$use_scv" != "no"]],[AC_DEFINE(USE_PPC_SCV)])
+
 # We keep the original values in `$config_*' and never modify them, so we
 # can write them unchanged into config.make.  Everything else uses
 # $machine, $vendor, and $os, and changes them whenever convenient.