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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-08-25 10:44:26 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-08-25 10:44:26 +0200 |
| commit | b62db0d2e9f8311c74d2de7439ea5ea07bfe8272 (patch) | |
| tree | e499ec51a137c629b22eb6bad48cc4ed318b4dbd | |
| parent | 8d29e149a8cbbf4503bb5ee259566a1da864bc6c (diff) | |
Document autoconf host_os tests
| -rw-r--r-- | hurd/porting/guidelines.mdwn | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/hurd/porting/guidelines.mdwn b/hurd/porting/guidelines.mdwn index 8f21a64f..0a9c133a 100644 --- a/hurd/porting/guidelines.mdwn +++ b/hurd/porting/guidelines.mdwn @@ -23,6 +23,29 @@ You may ask on the [[mailing lists/bug-hurd]] mailing list for details or questions about fixing bugs. +## <a name="autoconf"> Fixing configure.ac/in </a> + +The GNU/Hurd (and GNU/kFreeBSD) toolchain is extremely close to the GNU/Linux toolchain. +configure.ac thus very often just needs to be fixed by using the same cases as Linux, that is, turn + + switch "$host_os" in + case linux*) + +into + + switch "$host_os" in + case linux*|k*bsd-gnu|gnu*) + +for a host_os case statement, or + + switch "$host" in + case *-linux*) + +into + + switch "$host" in + case *-linux*|*-k*bsd-gnu|*-gnu*) + ## <a name="Undefined_bits_confname_h_tt_mac"> Undefined `bits/confname.h` macros (`PIPE_BUF`, ...) </a> If macro `XXX` is undefined, but macro `_SC_XXX` or `_PC_XXX` is defined in `bits/confname.h`, you probably need to use `sysconf`, `pathconf` or `fpathconf` to obtain it dynamicaly. |