Clang and GCC have different support for the various ISO C and C++ standards. This page summarises the supported flags. Important: the tables on this page show which versions of GCC and Clang accept which -std= arguments. Just because some version of GCC implements -std=c++XY does not imply that it properly supports all features of C++XY. For instance, GCC 5 may support the -std=c++17 flag, but its support for C++17 is marginal at best. Furthermore, if a variant supports -std=c++XY, it will always support -std=gnu++XY too (which just enables a bunch of non-portable GNU extensions).
GCC
C
| Version |
c1x |
c11 |
c17
|
| GCC 4.2 |
- |
- |
-
|
| GCC 4.3 |
- |
- |
-
|
| GCC 4.4 |
- |
- |
-
|
| GCC 4.5 |
- |
- |
-
|
| GCC 4.6 |
+ |
- |
-
|
| GCC 4.7 |
+ |
+ |
-
|
| GCC 4.8 |
+ |
+ |
-
|
| GCC 4.9 |
+ |
+ |
-
|
| GCC 5 |
+ |
+ |
-
|
| GCC 6 |
+ |
+ |
-
|
| GCC 7 |
+ |
+ |
-
|
| GCC 8 |
+ |
+ |
+
|
C++
| Version |
c++0x |
c++11 |
c++1y |
c++14 |
c++1z |
c++17 |
c++2a
|
| GCC 4.2 |
- |
- |
- |
- |
- |
- |
-
|
| GCC 4.3 |
+ |
- |
- |
- |
- |
- |
-
|
| GCC 4.4 |
+ |
- |
- |
- |
- |
- |
-
|
| GCC 4.5 |
+ |
- |
- |
- |
- |
- |
-
|
| GCC 4.6 |
+ |
- |
- |
- |
- |
- |
-
|
| GCC 4.7 |
+ |
+ |
- |
- |
- |
- |
-
|
| GCC 4.8 |
+ |
+ |
+ |
- |
- |
- |
-
|
| GCC 4.9 |
+ |
+ |
+ |
+ |
- |
- |
-
|
| GCC 5 |
+ |
+ |
+ |
+ |
+ |
+ |
-
|
| GCC 6 |
+ |
+ |
+ |
+ |
+ |
+ |
-
|
| GCC 7 |
+ |
+ |
+ |
+ |
+ |
+ |
-
|
| GCC 8 |
+ |
+ |
+ |
+ |
+ |
+ |
+
|
Clang
C
| Version |
c1x |
c11 |
c17
|
| Clang 2.7 |
- |
- |
-
|
| Clang 2.8 |
- |
- |
-
|
| Clang 2.9 |
- |
- |
-
|
| Clang 3.0 |
+ |
- |
-
|
| Clang 3.1 |
+ |
+ |
-
|
| Clang 3.2 |
+ |
+ |
-
|
| Clang 3.3 |
+ |
+ |
-
|
| Clang 3.4 |
+ |
+ |
-
|
| Clang 3.5 |
+ |
+ |
-
|
| Clang 3.6 |
+ |
+ |
-
|
| Clang 3.7 |
+ |
+ |
-
|
| Clang 3.8 |
+ |
+ |
-
|
| Clang 3.9 |
+ |
+ |
-
|
| Clang 4.0 |
+ |
+ |
-
|
| Clang 5.0 |
+ |
+ |
-
|
| Clang 6.0 |
+ |
+ |
+
|
C++
| Version |
c++0x |
c++11 |
c++1y |
c++14 |
c++1z |
c++17 |
c++2a
|
| Clang 2.7 |
+ |
- |
- |
- |
- |
- |
-
|
| Clang 2.8 |
+ |
- |
- |
- |
- |
- |
-
|
| Clang 2.9 |
+ |
- |
- |
- |
- |
- |
-
|
| Clang 3.0 |
+ |
+ |
- |
- |
- |
- |
-
|
| Clang 3.1 |
+ |
+ |
- |
- |
- |
- |
-
|
| Clang 3.2 |
+ |
+ |
+ |
- |
- |
- |
-
|
| Clang 3.3 |
+ |
+ |
+ |
- |
- |
- |
-
|
| Clang 3.4 |
+ |
+ |
+ |
- |
- |
- |
-
|
| Clang 3.5 |
+ |
+ |
+ |
+ |
+ |
- |
-
|
| Clang 3.6 |
+ |
+ |
+ |
+ |
+ |
- |
-
|
| Clang 3.7 |
+ |
+ |
+ |
+ |
+ |
- |
-
|
| Clang 3.8 |
+ |
+ |
+ |
+ |
+ |
- |
-
|
| Clang 3.9 |
+ |
+ |
+ |
+ |
+ |
- |
-
|
| Clang 4.0 |
+ |
+ |
+ |
+ |
+ |
- |
-
|
| Clang 5.0 |
+ |
+ |
+ |
+ |
+ |
+ |
+
|
| Clang 6.0 |
+ |
+ |
+ |
+ |
+ |
+ |
+
|
