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AX_CHECK_COMPILE_FLAG([-Wno-tautological-constant-out-of-range-compare], [CFLAGS="$CFLAGS -Wno-tautological-constant-out-of-range-compare"])
])
dnl Enable hardening
AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-protector-all"])
AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-strict-overflow"])
AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
dnl Random number generation mechanisms
AC_CHECK_FUNC(getrandom,, [
AC_CHECK_FUNC(getentropy,, [
AC_CHECK_FUNC(CryptGenRandom)
])
])
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AX_CHECK_COMPILE_FLAG([-Wno-tautological-constant-out-of-range-compare], [CFLAGS="$CFLAGS -Wno-tautological-constant-out-of-range-compare"])
])
dnl Enable hardening
AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-protector-all"])
AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-strict-overflow"])
AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
dnl Enable OpenMP, if available
tcl_nano_openmp=''
AX_CHECK_COMPILE_FLAG([-fopenmp], [
tcl_nano_openmp='-fopenmp'
], [
AX_CHECK_COMPILE_FLAG([-xopenmp], [
tcl_nano_openmp='-xopenmp'
], [
AX_CHECK_COMPILE_FLAG([-openmp], [
tcl_nano_openmp='-openmp'
], [
AX_CHECK_COMPILE_FLAG([/openmp], [
tcl_nano_openmp='/openmp'
])
])
])
])
if test -n "${tcl_nano_openmp}"; then
CFLAGS="$CFLAGS ${tcl_nano_openmp}"
AC_DEFINE([NANO_TCL_HAVE_OPENMP], [1], [Define if you have support for OpenMP])
fi
dnl Random number generation mechanisms
AC_CHECK_FUNC(getrandom,, [
AC_CHECK_FUNC(getentropy,, [
AC_CHECK_FUNC(CryptGenRandom)
])
])
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