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# AC_GNU_SOURCE
# --------------
AC_DEFUN([AC_GNU_SOURCE],
[AH_VERBATIM([_GNU_SOURCE],
[/* Enable GNU extensions on systems that have them. */
#ifndef _GNU_SOURCE
# undef _GNU_SOURCE
#endif
/* Enable many GNU extensions on Solaris. */
#ifndef __EXTENSIONS__
# undef __EXTENSIONS__
#endif])dnl
AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
AC_DEFINE([_GNU_SOURCE])
AC_DEFINE([__EXTENSIONS__])
])
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