__msft_lib_proxy#define __msft_lib_proxy /* see below */
Starting with 3.0.0, Proxy ships a feature-test macro that encodes the library version. When headers from different major versions of the Proxy library can appear in the same translation unit (for example, Proxy 3 and Proxy 4), use the major-qualified form __msft_lib_proxy<major> (e.g., __msft_lib_proxy3).
| Version | Value of __msft_lib_proxy |
|---|---|
| 3.4.0 | 202505L |
| 3.3.0 | 202503L |
| 3.2.1 | 202502L |
| 3.2.0 | 202501L |
| 3.1.0 | 202410L |
| 3.0.0 | 202408L |
#include <cstdio>
#include <proxy/proxy.h>
int main() {
#if defined(__msft_lib_proxy) && __msft_lib_proxy >= 202408L
puts("Compiled with library Proxy 3.0.0 or above.");
#else
puts("Cannot determine the version of library Proxy.");
#endif
}