| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | feature_test_macros | 7 | 964 |
| centos | feature_test_macros | 7 | 618 |
| php | feature_test_macros | 7 | 565 |
| debian | feature_test_macros | 7 | 559 |
| posix | feature_test_macros | 7 | 553 |
| v7 | feature_test_macros | 7 | 508 |
| xfree86 | feature_test_macros | 7 | 487 |
| suse | feature_test_macros | 7 | 474 |
| x11r4 | feature_test_macros | 7 | 458 |
| opendarwin | feature_test_macros | 7 | 453 |
| osx | feature_test_macros | 7 | 444 |
| minix | feature_test_macros | 7 | 418 |
| plan9 | feature_test_macros | 7 | 416 |
| freebsd | feature_test_macros | 7 | 383 |
| bsd | feature_test_macros | 7 | 377 |
| mojave | feature_test_macros | 7 | 362 |
| hpux | feature_test_macros | 7 | 354 |
| redhat | feature_test_macros | 7 | 351 |
| opensolaris | feature_test_macros | 7 | 333 |
| ultrix | feature_test_macros | 7 | 324 |
| osf1 | feature_test_macros | 7 | 322 |
| sunos | feature_test_macros | 7 | 315 |
| netbsd | feature_test_macros | 7 | 280 |