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AF_INET6 and cygwin builds

I'm trying to bootstrap gcj on i686-pc-cygwin, from CVS HEAD, but I am running into an error:

/home/eblake/gcc-trunk/gcc/xgcc -shared-libgcc -B/home/eblake/gcc-trunk/gcc/ -nostdinc++ -L/home/eblake/gcc-trunk/i686-pc-cygwin/libstdc++-v3/src -L/home/eblake/gcc-trunk/i686-pc-cygwin/libstdc++-v3/src/.libs -B/home/eblake/gcc-3.4/i686-pc-cygwin/bin/ -B/home/eblake/gcc-3.4/i686-pc-cygwin/lib/ -isystem /home/eblake/gcc-3.4/i686-pc-cygwin/include -isystem /home/eblake/gcc-3.4/i686-pc-cygwin/sys-include -DHAVE_CONFIG_H -I. -I../../../gcc/libjava -I./include -I./gcj -I../../../gcc/libjava -Iinclude -I../../../gcc/libjava/include -I../../../gcc/libjava/../boehm-gc/include -DGC_WIN32_THREADS=1 -DSILENT=1 -DNO_SIGNALS=1 -DNO_EXECUTE_PERMISSION=1 -DALL_INTERIOR_POINTERS=1 -DJAVA_FINALIZATION=1 -DGC_GCJ_SUPPORT=1 -DATOMIC_UNCOLLECTABLE=1 -I../../../gcc/libjava/libltdl -I../../../gcc/libjava/libltdl -I../../../gcc/libjava/.././libjava/../gcc -I../../../gcc/libjava/../zlib -I../../../gcc/libjava/../libffi/include -I../libffi/include -fno-rtti -fnon-call-exceptions -fdollars-in-identifiers -Wswitch-enum -D__NO_MATH_INLINES -ffloat-store -W -Wall -D_GNU_SOURCE -DPREFIX=\"/home/eblake/gcc-3.4\" -DLIBDIR=\"/home/eblake/gcc-3.4/lib\" -g -O2 -MD -MT java/net/natInetAddress.lo -MF java/net/natInetAddress.pp -c java/net/natInetAddress.cc -o java/net/natInetAddress.o
java/net/natInetAddress.cc: In static member function `static jint
java::net::InetAddress::getFamily(JArray<jbyte>*)':
java/net/natInetAddress.cc:101: error: `AF_INET6' undeclared (first use this
function)
java/net/natInetAddress.cc:101: error: (Each undeclared identifier is reported
only once for each function it appears in.)
java/net/natInetAddress.cc: In static member function `static
JArray<java::net::InetAddress*>*
java::net::InetAddress::lookup(java::lang::String*, java::net::InetAddress*,

   __java_boolean)':
java/net/natInetAddress.cc:190: error: `AF_INET6' undeclared (first use this
   function)

On investigation, I found java/net/natInetAddress.cc is linking to libjava/java/net/natInetAddressPosix.cc, which has #include <sys/socket.h>. However, the cygwin sys/socket.h does not (yet) support AF_INET6. Also, Michael Koch's Changelog for this file,

2003-03-18 Michael Koch <konqueror@gmx.de>

	* configure.in: Create links to architecture dependent files,
	introduced PLATFORMNET variable (set to NoNet for newlib usage).
	* configure: Regenerated.
	* java/net/natInetAddressNoNet.cc,
	java/net/natInetAddressPosix.cc,
	java/net/natInetAddressWin32.cc,
	java/net/natNetworkInterfaceNoNet.cc,
	java/net/natNetworkInterfacePosix.cc,
	java/net/natNetworkInterfaceWin32.cc,
	java/net/natPlainDatagramSocketImplNoNet.cc,
	java/net/natPlainDatagramSocketImplPosix.cc,
	java/net/natPlainDatagramSocketImplWin32.cc,
	java/net/natPlainSocketImplNoNet.cc,
	java/net/natPlainSocketImplPosix.cc,
	java/net/natPlainSocketImplWin32.cc: New files.

makes it sound like the link may have been set up correctly - should cygwin should be using the NoNet version? Otherwise, if cygwin is correctly using the Posix version, we probably need some configure magic to check for AF_INET6.

--
Someday, I might put a cute statement here.

Eric Blake ebb9@byu.net


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