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Do not define _XOPEN_SOURCE on OpenBSD 2.x and 3.[012]. Fixes #635034
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27
configure.in
27
configure.in
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@ -33,9 +33,10 @@ AC_DEFINE(_GNU_SOURCE, 1, [Define on Linux to activate all library features])
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AH_VERBATIM([_XOPEN_SOURCE],
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[/* Define on UNIX to activate XPG/5 features. */
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#ifndef _XOPEN_SOURCE
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# define _XOPEN_SOURCE 500
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# undef _XOPEN_SOURCE
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#endif])
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AC_DEFINE(_XOPEN_SOURCE, 500)
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define_xopen_source=yes
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# On Tru64 Unix 4.0F, defining _XOPEN_SOURCE also requires definition
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# of _XOPEN_SOURCE_EXTENDED and _POSIX_C_SOURCE, or else several APIs
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@ -113,6 +114,28 @@ then
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esac
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fi
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# Some systems cannot stand _XOPEN_SOURCE being defined at all; they
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# disable features if it is defined, without any means to access these
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# features as extensions. For these systems, we skip the definition of
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# _XOPEN_SOURCE. Before adding a system to the list to gain access to
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# some feature, make sure there is no alternative way to access this
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# feature. Also, when using wildcards, make sure you have verified the
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# need for not defining _XOPEN_SOURCE on all systems matching the
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# wildcard, and that the wildcard does not include future systems
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# (which may remove their limitations).
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dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output
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case $ac_sys_system/$ac_sys_release in
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# On OpenBSD, select(2) is not available if _XOPEN_SOURCE is defined,
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# even though select is a POSIX function. Reported by J. Ribbens.
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OpenBSD/2.* | OpenBSD/3.@<:@012@:>@)
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define_xopen_source=no;;
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esac
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if test $define_xopen_source = yes
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then
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AC_DEFINE(_XOPEN_SOURCE, 500)
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fi
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#
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# SGI compilers allow the specification of the both the ABI and the
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# ISA on the command line. Depending on the values of these switches,
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