Andrew Benton wrote: > Hello World! > > Firefox-4.0 in its raw state won't compile with gcc-4.6.0. The build > grinds to a halt like so:
> c++ -o nsEnumeratorUtils.o -c -I../../dist/stl_wrappers -I../../dist/system_wrappers -include /home/andy/firefox-4.0/config/gcc_hidden.h -DOSTYPE=\"Linux2.6\" -DOSARCH=Linux -DTARGET_XPCOM_ABI=\"x86_64-gcc3\" -I/home/andy/firefox-4.0/xpcom/glue/../build -I/home/andy/firefox-4.0/xpcom/glue -I. -I../../dist/include -I../../dist/include/nsprpub -I/tmp/firefox-build-dir/dist/include/nspr -I/tmp/firefox-build-dir/dist/include/nss -fPIC -fno-rtti -fno-exceptions -Wall -Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof -Wno-variadic-macros -Werror=return-type -pedantic -Wno-long-long -fno-strict-aliasing -fshort-wchar -pthread -pipe -DNDEBUG -DTRIMMED -Os -freorder-blocks -fomit-frame-pointer -DMOZILLA_CLIENT -include ../../mozilla-config.h -MD -MF .deps/nsEnumeratorUtils.pp > /home/andy/firefox-4.0/xpcom/glue/nsEnumeratorUtils.cpp > /home/andy/firefox-4.0/xpcom/glue/nsEnumeratorUtils.cpp:115:27: > error: uninitialized const EmptyEnumeratorImpl::kInstance [-fpermissive] > /home/andy/firefox-4.0/xpcom/glue/nsEnumeratorUtils.cpp:50:7: note: const class EmptyEnumeratorImpl has no user-provided default constructor > make[5]: *** [nsEnumeratorUtils.o] Error 1 > There are 2 solutions that I know of. > 1: Set CXXFLAGS to include -fpermissive: > > echo "export CXXFLAGS=\"-march=native -mtune=generic -O2 -pipe \ > -fpermissive\"" >> mozconfig > > or > 2: Patch the Firefox source with this patch: > > https://bugzilla.mozilla.org/attachment.cgi?id=511846&action=diff&context=patch&collapsed=&headers=1&format=raw Wow. gcc-4.6 demands a constructor without -fpermissive? If you have a class that doesn't need a constructor, demanding it seems wrong. It is supposed to call a default (null) constructor. With a little googling, I see what is happening. The C++ standard says that if a class is instantiated as 'const', it must have a user defined constructor. Well, I learn new stuff all the time. I guess the other alternative is to remove the const from class instantiation. -- Bruce -- http://linuxfromscratch.org/mailman/listinfo/blfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
