Mercurial > hg > octave-lojdl > gnulib-hg
changeset 2725:3257099741e7
(AC__GNU_SOURCE): New file/macro.
author | Jim Meyering <jim@meyering.net> |
---|---|
date | Sun, 09 Jul 2000 17:24:41 +0000 |
parents | 60a660766f7d |
children | b480e675b1ae |
files | m4/gnu-source.m4 |
diffstat | 1 files changed, 25 insertions(+), 0 deletions(-) [+] |
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new file mode 100644 --- /dev/null +++ b/m4/gnu-source.m4 @@ -0,0 +1,25 @@ +#serial 1 +# Make sure _GNU_SOURCE is defined where necessary: as early as possible +# for configure-time tests, as well as for every source file that includes +# config.h. + +# From Jim Meyering. + +AC_DEFUN(AC__GNU_SOURCE, +[ + # Make sure that _GNU_SOURCE is defined for all subsequent + # configure-time compile tests. + # This definition must be emitted (into confdefs.h) before any + # test that involves compilation. + AC_DEFINE(_GNU_SOURCE_KLUDGE, [1 +#ifndef _GNU_SOURCE +# define _GNU_SOURCE +#endif], [This definition has a four-line value, the last three of which +ensure that _GNU_SOURCE is defined in confdefs.h.]) + + # Emit this code into config.h.in. + # The ifndef is to avoid redefinition warnings. + AH_VERBATIM([_GNU_SOURCE], [#ifndef _GNU_SOURCE +# define _GNU_SOURCE +#endif]) +])