With this patch it all compiles:
diff --git a/src/sage/libs/singular/decl.pxd
b/src/sage/libs/singular/decl.pxd
index 8235e9d..8f355ba 100644
--- a/src/sage/libs/singular/decl.pxd
+++ b/src/sage/libs/singular/decl.pxd
@@ -1,4 +1,4 @@
-# distutils: extra_compile_args = SINGULAR_CFLAGS
+# distutils: extra_compile_args = SINGULAR_CFLAGS -std=c++11
 # distutils: libraries = SINGULAR_LIBRARIES
 # distutils: library_dirs = SINGULAR_LIBDIR
 # distutils: language = c++
diff --git a/src/sage/rings/finite_rings/element_givaro.pxd
b/src/sage/rings/finite_rings/element_givaro.pxd
index 91c4ed7..b43f7ad 100644
--- a/src/sage/rings/finite_rings/element_givaro.pxd
+++ b/src/sage/rings/finite_rings/element_givaro.pxd
@@ -1,4 +1,4 @@
-# distutils: extra_compile_args = GIVARO_CFLAGS
+# distutils: extra_compile_args = GIVARO_CFLAGS -std=c++11

 from libcpp.vector cimport vector
 ctypedef vector[int] intvec

Is this known? Open ticket with it?

On Wed, Nov 2, 2016 at 3:40 PM Ralf Stephan <[email protected]> wrote:

> Again me with the gcc5 error on OpenSuSE, this time with serial log ;-)
>
> Thanks for any opinion,
>

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