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configure.ac: Define _DEFAULT_SOURCE along with _XOPEN_SOURCE #1711

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configure.ac: Define _DEFAULT_SOURCE along with _XOPEN_SOURCE #1711

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5 changes: 4 additions & 1 deletion configure.ac
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Expand Up @@ -78,8 +78,11 @@ HTS_PROG_CC_WERROR(hts_late_cflags)
# PTHREAD_MUTEX_RECURSIVE on some Linux distributions). Hence we set it to 600.

# Define _XOPEN_SOURCE unless the user has already done so via $CPPFLAGS etc.
# It is necessary to define _DEFAULT_SOURCE at the same time, otherwise
# _XOPEN_SOURCE will suppress some declarations needed by AC_FUNC_MMAP.
AC_CHECK_DECL([_XOPEN_SOURCE], [],
[AC_DEFINE([_XOPEN_SOURCE], [600], [Specify X/Open requirements])],
[AC_DEFINE([_XOPEN_SOURCE], [600], [Specify X/Open requirements])
AC_DEFINE([_DEFAULT_SOURCE], [1], [Enable default extensions.])],
[])

dnl Options for rANS32x16 sse4.1 version - sse4.1
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