On Wed, Jun 20, 2012 at 1:08 AM, Diego Novillo <dnovi...@google.com> wrote:
> diff --git a/configure.ac b/configure.ac
> index 071b5e2..2a2a0c6 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1667,7 +1653,7 @@ ACX_ELF_TARGET_IFELSE([# ELF platforms build the
> lto-plugin always.
> ])
>
>
> -# By default, C is the only stage 1 language.
> +# By default, C and C++ are the only stage 1 languages.
> stage1_languages=,c,
So shouldn't you add c++ here?
> # Target libraries that we bootstrap.
> @@ -1705,15 +1691,14 @@ if test -d ${srcdir}/gcc; then
> ;;
> esac
>
> - # If bootstrapping, then using --enable-build-with-cxx or
> - # --enable-build-poststage1-with-cxx requires enabling C++.
> - case
> ",$enable_languages,:,$ENABLE_BUILD_WITH_CXX,$ENABLE_BUILD_POSTSTAGE1_WITH_CXX,:$enable_bootstrap"
> in
> - *,c++,*:*:*) ;;
> - *:*,yes,*:yes)
> + # If bootstrapping, C++ must be enabled.
Hmn, perhaps I misunderstand, but shouldn't C++ also be enabled if not
bootstrapping?
> + case ",$enable_languages,:$enable_bootstrap" in
> + *,c++,*:*) ;;
> + *:yes)
> if test -f ${srcdir}/gcc/cp/config-lang.in; then
> enable_languages="${enable_languages},c++"
> else
> - AC_MSG_ERROR([bootstrapping with --enable-build-with-cxx or
> --enable-build-poststage1-with-cxx requires c++ sources])
> + AC_MSG_ERROR([bootstrapping requires c++ sources])
> fi
> ;;
> esac
> @@ -1808,10 +1793,7 @@ if test -d ${srcdir}/gcc; then
> fi
>
> if test "$language" = "c++"; then
> - if test "$ENABLE_BUILD_WITH_CXX" = "yes" \
> - || test "$ENABLE_BUILD_POSTSTAGE1_WITH_CXX" = "yes"; then
> - boot_language=yes
> - fi
> + boot_language=yes
> fi
This shouldn't be necessary if you add c++ to stage1_languages
> case ,${enable_languages}, in
> @@ -3198,26 +3180,6 @@ case $build in
> esac ;;
> esac
You can also remove the lang_requires_boot_languages machinery again.
It is only used by Go to enable c++ for bootstrapping the Go front
end, but with c++ enabled by default, there is no need for this hack
for Go anymore.
Ciao!
Steven
