| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | feature_test_macros | 7 | 853 |
| centos | feature_test_macros | 7 | 544 |
| posix | feature_test_macros | 7 | 504 |
| debian | feature_test_macros | 7 | 496 |
| php | feature_test_macros | 7 | 493 |
| v7 | feature_test_macros | 7 | 451 |
| xfree86 | feature_test_macros | 7 | 432 |
| suse | feature_test_macros | 7 | 423 |
| x11r4 | feature_test_macros | 7 | 403 |
| opendarwin | feature_test_macros | 7 | 403 |
| osx | feature_test_macros | 7 | 390 |
| plan9 | feature_test_macros | 7 | 373 |
| minix | feature_test_macros | 7 | 370 |
| freebsd | feature_test_macros | 7 | 347 |
| bsd | feature_test_macros | 7 | 334 |
| mojave | feature_test_macros | 7 | 322 |
| hpux | feature_test_macros | 7 | 310 |
| redhat | feature_test_macros | 7 | 308 |
| ultrix | feature_test_macros | 7 | 294 |
| opensolaris | feature_test_macros | 7 | 291 |
| osf1 | feature_test_macros | 7 | 286 |
| sunos | feature_test_macros | 7 | 283 |
| netbsd | feature_test_macros | 7 | 234 |