d_int64_t (d_int64_t.U):
This symbol will be defined if the C compiler supports int64_t.
+d_ip_mreq (d_socket.U):
+ This variable conditionally defines the HAS_IP_MREQ symbol, which
+ indicates the availability of a struct ip_mreq.
+
+d_ip_mreq_source (d_socket.U):
+ This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
+ which indicates the availability of a struct ip_mreq_source.
+
d_ipv6_mreq (d_socket.U):
This variable conditionally defines the HAS_IPV6_MREQ symbol, which
indicates the availability of a struct ipv6_mreq.
+d_ipv6_mreq_source (d_socket.U):
+ This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
+ which indicates the availability of a struct ipv6_mreq_source.
+
d_isascii (d_isascii.U):
This variable conditionally defines the HAS_ISASCII constant,
which indicates to the C program that isascii() is available.
On ELF systems, it should be $cc. Mostly, we'll try to respect
the hint file setting.
+ld_can_script (dlsrc.U):
+ This variable shows if the loader accepts scripts in the form of
+ -Wl,--version-script=ld.script. This is currently only supported
+ for GNU ld on ELF in dynamic loading builds.
+
lddlflags (dlsrc.U):
This variable contains any special flags that might need to be
passed to $ld to create a shared library suitable for dynamic
This variable tells whether the vendorprefix
and consequently other vendor* paths are in use.
+useversionedarchname (archname.U):
+ This variable indicates whether to include the $api_versionstring
+ as a component of the $archname.
+
usevfork (d_vfork.U):
This variable is set to true when the user accepts to use vfork.
It is set to false when no vfork is available or when the user