On Tue, Jul 19, 2011 at 11:33 AM, Ian Lance Taylor <i...@google.com> wrote: > Ian Lance Taylor <i...@google.com> writes: > >> I would like to propose this patch as a step toward building gcc using a >> C++ compiler. This patch builds stage1 with the C compiler as usual, >> and defaults to building stages 2 and 3 with a C++ compiler built during >> stage 1. This means that the gcc installed and used by most people will >> be built by a C++ compiler. This will ensure that gcc is fully >> buildable with C++, while retaining the ability to bootstrap with only a >> C compiler, not a C++ compiler. This will permit us to experiment with >> optionally using C++ for some code, using a #ifdef to select the C >> implementation or the C++ implementation. >> >> I would suggest that we consider releasing 4.7 this way, as a small >> trial for building gcc with C++. >> >> This is a big step, so I am sending the patch to both gcc@ and >> gcc-patches@ for comments. >> >> Bootstrapped and ran testsuite on x86_64-unknown-linux-gnu. >> >> Ian >> >> >> 2011-07-15 Ian Lance Taylor <i...@google.com> >> >> * configure.ac: Add --enable-build-poststage1-with-cxx. If set, >> make C++ a boot_language. Set and substitute >> POSTSTAGE1_CONFIGURE_FLAGS. >> * Makefile.tpl (POSTSTAGE1_CONFIGURE_FLAGS): New variable. >> (STAGE[+id+]_CONFIGURE_FLAGS): Add $(POSTSTAGE1_CONFIGURE_FLAGS). >> * configure, Makefile.in: Rebuild. > > > I got agreement from two global reviewers and no objections. > > I have committed this patch. > > Please let me know about any problems.
It caused: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49787 -- H.J.
