| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | feature_test_macros | 7 | 1,139 |
| centos | feature_test_macros | 7 | 754 |
| php | feature_test_macros | 7 | 752 |
| debian | feature_test_macros | 7 | 697 |
| posix | feature_test_macros | 7 | 671 |
| v7 | feature_test_macros | 7 | 624 |
| suse | feature_test_macros | 7 | 611 |
| xfree86 | feature_test_macros | 7 | 600 |
| x11r4 | feature_test_macros | 7 | 588 |
| opendarwin | feature_test_macros | 7 | 562 |
| osx | feature_test_macros | 7 | 546 |
| minix | feature_test_macros | 7 | 525 |
| plan9 | feature_test_macros | 7 | 519 |
| hpux | feature_test_macros | 7 | 476 |
| bsd | feature_test_macros | 7 | 472 |
| mojave | feature_test_macros | 7 | 458 |
| freebsd | feature_test_macros | 7 | 453 |
| redhat | feature_test_macros | 7 | 445 |
| sunos | feature_test_macros | 7 | 425 |
| ultrix | feature_test_macros | 7 | 415 |
| opensolaris | feature_test_macros | 7 | 411 |
| osf1 | feature_test_macros | 7 | 397 |
| netbsd | feature_test_macros | 7 | 342 |