| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | feature_test_macros | 7 | 970 |
| centos | feature_test_macros | 7 | 622 |
| php | feature_test_macros | 7 | 581 |
| debian | feature_test_macros | 7 | 568 |
| posix | feature_test_macros | 7 | 559 |
| v7 | feature_test_macros | 7 | 513 |
| xfree86 | feature_test_macros | 7 | 493 |
| suse | feature_test_macros | 7 | 478 |
| x11r4 | feature_test_macros | 7 | 462 |
| opendarwin | feature_test_macros | 7 | 460 |
| osx | feature_test_macros | 7 | 448 |
| minix | feature_test_macros | 7 | 421 |
| plan9 | feature_test_macros | 7 | 421 |
| freebsd | feature_test_macros | 7 | 385 |
| bsd | feature_test_macros | 7 | 380 |
| mojave | feature_test_macros | 7 | 366 |
| hpux | feature_test_macros | 7 | 359 |
| redhat | feature_test_macros | 7 | 355 |
| opensolaris | feature_test_macros | 7 | 335 |
| ultrix | feature_test_macros | 7 | 325 |
| osf1 | feature_test_macros | 7 | 323 |
| sunos | feature_test_macros | 7 | 319 |
| netbsd | feature_test_macros | 7 | 281 |