diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 30 |
1 files changed, 26 insertions, 4 deletions
@@ -1,5 +1,5 @@ #! /bin/sh -# From configure.in Revision: 1.364 . +# From configure.in Revision: 1.365 . # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.53 for python 2.3. # @@ -1254,10 +1254,8 @@ _ACEOF # of _XOPEN_SOURCE. So define it only conditionally. -cat >>confdefs.h <<\_ACEOF -#define _XOPEN_SOURCE 500 -_ACEOF +define_xopen_source=yes # On Tru64 Unix 4.0F, defining _XOPEN_SOURCE also requires definition # of _XOPEN_SOURCE_EXTENDED and _POSIX_C_SOURCE, or else several APIs @@ -1347,6 +1345,30 @@ then esac fi +# Some systems cannot stand _XOPEN_SOURCE being defined at all; they +# disable features if it is defined, without any means to access these +# features as extensions. For these systems, we skip the definition of +# _XOPEN_SOURCE. Before adding a system to the list to gain access to +# some feature, make sure there is no alternative way to access this +# feature. Also, when using wildcards, make sure you have verified the +# need for not defining _XOPEN_SOURCE on all systems matching the +# wildcard, and that the wildcard does not include future systems +# (which may remove their limitations). +case $ac_sys_system/$ac_sys_release in + # On OpenBSD, select(2) is not available if _XOPEN_SOURCE is defined, + # even though select is a POSIX function. Reported by J. Ribbens. + OpenBSD/2.* | OpenBSD/3.[012]) + define_xopen_source=no;; +esac + +if test $define_xopen_source = yes +then + cat >>confdefs.h <<\_ACEOF +#define _XOPEN_SOURCE 500 +_ACEOF + +fi + # # SGI compilers allow the specification of the both the ABI and the # ISA on the command line. Depending on the values of these switches, |