Lucky Lu <Lucky.Lu@xxxxxxxxxxxxxxxxxx> writes: > I am having trouble with building the gcc 4.5.1 with --enable-plugin on Cygwin. As far as I know gcc plugins don't work on cygwin. > The configure string is "--enable-plugin --enable-languages=c,c++ --disable-bootstrap". > The error is , > Â checking for -rdynamic... objdump: conftest: not a dynamic object no > Â checking for library containing dlopen... none required > Â checking for -fPIC -shared... no > Â configure: error: > Â Building GCC with plugin support requires a host that supports > Â -fPIC, -shared, -ldl and -rdynamic. > Â make[1]: *** [configure-gcc] Error 1 > > When I jump the -fPIC checking, it's success. And then failed when building a gcc plugin, print following, > > Â plugin.c:1:0: warning: -fPIC ignored for target (all code is position independent) > Â /tmp/ccU93aXF.o:plugin.c:(.text+0xd1): undefined reference to `_build3_stat' > Â /tmp/ccU93aXF.o:plugin.c:(.text+0xff): undefined reference to `_gimple_assign_single_p' > Â ..... That's in essence because -rdynamic doesn't do anything on Windows. It goes further, in that I don't know that there is any way it can be made to work given the way that Windows DLLs work. There may be some way to make it work; I just don't know of one. Ian
