[PATCH 5/5] add libcc1

[Jakub Jelinek]

On Thu, Oct 30, 2014 at 09:33:08AM +0100, Thomas Schwinge wrote:
> Here is a patch that I'm testing; OK?  I didn't understand what the
> conditions are that libcc1 might not be built as a shared library: is it
> always built as one -- but is that really supported on all systems?  If

It is not unconditionally supported, libcc1/configure.ac uses
GCC_ENABLE_PLUGINS and doesn't compile anything if gcc doesn't support
plugins (one of the several tests of that is that -fPIC -shared is
supported.

> that's indeed true, then this could be further simplified, and
> --enable-shared passed to the host libiberty unconditionally.

Your patch is ok with proper ChangeLog entry.

> --- configure.ac
> +++ configure.ac
> @@ -1865,7 +1865,6 @@ if test -d ${srcdir}/gcc; then
>    new_enable_languages=,c,
>  
>    # If LTO is enabled, add the LTO front end.
> -  extra_host_libiberty_configure_flags=
>    if test "$enable_lto" = "yes" ; then
>      case ,${enable_languages}, in
>        *,lto,*) ;;
> @@ -1873,10 +1872,8 @@ if test -d ${srcdir}/gcc; then
>      esac
>      if test "${build_lto_plugin}" = "yes" ; then
>        configdirs="$configdirs lto-plugin"
> -      extra_host_libiberty_configure_flags=--enable-shared
>      fi
>    fi
> -  AC_SUBST(extra_host_libiberty_configure_flags)
>  
>    missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
>    potential_languages=,c,
> @@ -2190,6 +2187,17 @@ then
>    esac
>  fi
>  
> +# Sometimes we have special requirements for the host libiberty.
> +extra_host_libiberty_configure_flags=
> +case " $configdirs " in
> +  *" lto-plugin "* | *" libcc1 "*)
> +    # When these are to be built as shared libraries, the same applies to
> +    # libiberty.
> +    extra_host_libiberty_configure_flags=--enable-shared
> +    ;;
> +esac
> +AC_SUBST(extra_host_libiberty_configure_flags)
> +
>  # Produce a warning message for the subdirs we can't configure.
>  # This isn't especially interesting in the Cygnus tree, but in the individual
>  # FSF releases, it's important to let people know when their machine isn't
> 
> 
> Grüße,
>  Thomas



	Jakub