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Diffstat (limited to 'hurd/porting/guidelines.mdwn')
| -rw-r--r-- | hurd/porting/guidelines.mdwn | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/hurd/porting/guidelines.mdwn b/hurd/porting/guidelines.mdwn index d28a777e..a9acd9f9 100644 --- a/hurd/porting/guidelines.mdwn +++ b/hurd/porting/guidelines.mdwn @@ -1,5 +1,5 @@ [[!meta copyright="Copyright © 2002, 2003, 2005, 2007, 2008, 2009, 2010, 2011, -2012 Free Software Foundation, Inc."]] +2012, 2013 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this @@ -83,6 +83,24 @@ because else *-gnu* would catch i386-pc-linux-gnu for instance... Note: some of such statements are not from the source package itself, but from aclocal.m4 which is actually from libtool. In such case, the package simply needs to be re-libtoolize-d. + +## Preprocessor Define + +### IRC, freenode, #hurd, 2013-10-23 + + <C-Keen> Is there a preprocessor define gcc sets for hurd which I can check + in my code? + <braunr> __GNU__ + <braunr> glibc sets it if i'm right + <C-Keen> I also see that __MACH__ gets set + <azeem> that's also set on Mac OS X + <C-Keen> right, which uncovered a bug in the code + <braunr> the microkernel doesn't always implies what operating system runs + on top of it + <C-Keen> braunr: but __GNU__ is the correct define for hurd specific code? + <braunr> yes + + ## <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. |