diff options
| -rw-r--r-- | sysdeps/gnu/errlist.awk | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sysdeps/gnu/errlist.awk b/sysdeps/gnu/errlist.awk index b97f078910..0616b0303d 100644 --- a/sysdeps/gnu/errlist.awk +++ b/sysdeps/gnu/errlist.awk @@ -25,9 +25,17 @@ # @end deftypevr BEGIN { - alias["EWOULDBLOCK"] = "EAGAIN"; - alias["EDEADLOCK"] = "EDEADLK"; - alias["ENOTSUP"] = "EOPNOTSUPP"; + + # Here we list the E* names that might be duplicate names for the + # same integer value on some systems. This causes the code below + # to generate ``#if defined (ALIAS) && ALIAS != ORIGINAL'' in the code, + # so the output does not presume that these are in fact aliases. + # We list here all the known potential cases on any system, + # so that the C source we produce will do the right thing based + # on the actual #define'd values it's compiled with. + alias["EWOULDBLOCK"]= "EAGAIN"; + alias["EDEADLOCK"] = "EDEADLK"; + alias["ENOTSUP"] = "EOPNOTSUPP"; print "/* This file is generated from errno.texi by errlist.awk. */" print ""; |