Bug#700290: pbuilder: clang support

[Junichi Uekawa]

I'm attaching a proposed hook script. Will this work for you?

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#!/bin/bash
# Force use of clang instead of GCC.
function setup_clang() {
    local GCC_VERSION=$(readlink /usr/bin/gcc | sed 's/^gcc\-//')

    apt-get -y "${APTGETOPT[@]}" install clang

    echo -e "\e[33mReplace gcc, g++ & cpp by clang\e[m"
    for compiler in gcc-"$GCC_VERSION" cpp-"$GCC_VERSION" g++-"$GCC_VERSION"; do
	rm /usr/bin/$compiler &&
	ln -s /usr/bin/clang /usr/bin/$compiler 
    done
    
    echo -e "\e[33mCheck if gcc, g++ & cpp are actually clang\e[m"
    usr/bin/gcc --version| grep clang > /dev/null || exit 1
}

setup_clang
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At Sat, 23 Feb 2013 22:39:04 +0900,
Hideki Yamane wrote:
> 
> diff -Nru pbuilder-0.213/bash_completion.d/pbuilder pbuilder-0.213+nmu1/bash_completion.d/pbuilder
> --- pbuilder-0.213/bash_completion.d/pbuilder	2012-03-25 14:53:45.000000000 +0900
> +++ pbuilder-0.213+nmu1/bash_completion.d/pbuilder	2013-02-11 14:21:58.000000000 +0900
> @@ -60,7 +60,7 @@
>                  --aptconfdir --timeout --override-config  --binary-arch \
>                  --preserve-buildplace --bindmounts --debug --twice --autocleanaptcache \
>                  --compressprog --debootstrapopts --save-after-login --save-after-exec \
> -                --debootstrap' \
> +                --debootstrap --with-clang' \
>                  -- "$cur" ) )
>              if [[ $prev = @(--aptcache|--hookdir) ]]; then
>                  # Optionally provide a directory
> diff -Nru pbuilder-0.213/debian/changelog pbuilder-0.213+nmu1/debian/changelog
> --- pbuilder-0.213/debian/changelog	2012-10-08 08:30:05.000000000 +0900
> +++ pbuilder-0.213+nmu1/debian/changelog	2013-02-11 15:01:07.000000000 +0900
> @@ -1,3 +1,13 @@
> +pbuilder (0.213+nmu1) UNRELEASED; urgency=low
> +
> +  [ Hideki Yamane ]
> +  * Non-maintainer upload.
> +  * add "--with-clang" option to build your package with clang.
> +    It would replace GCC by default(Thanks Luca Falavigna <dktrkranz at debian.org>),
> +    also you can specify it any version with GCC_VERSION environment variable.
> +
> + -- Hideki Yamane <henrich at debian.org>  Mon, 11 Feb 2013 14:22:38 +0900
> +
>  pbuilder (0.213) unstable; urgency=low
>  
>    [ Beatrice Torracca ]
> diff -Nru pbuilder-0.213/pbuilder-buildpackage pbuilder-0.213+nmu1/pbuilder-buildpackage
> --- pbuilder-0.213/pbuilder-buildpackage	2012-03-13 17:25:15.000000000 +0900
> +++ pbuilder-0.213+nmu1/pbuilder-buildpackage	2013-02-11 15:18:41.000000000 +0900
> @@ -97,6 +97,9 @@
>  executehooks "D"
>  trap saveaptcache_umountproc_cleanbuildplace_trap exit sighup sigpipe
>  checkbuilddep "$PACKAGENAME"
> +if [ "$CLANG" = "yes" ]; then
> +    setup_clang
> +fi
>  save_aptcache
>  trap umountproc_cleanbuildplace_trap exit sighup sigpipe
>  
> diff -Nru pbuilder-0.213/pbuilder-buildpackage-funcs pbuilder-0.213+nmu1/pbuilder-buildpackage-funcs
> --- pbuilder-0.213/pbuilder-buildpackage-funcs	2012-03-31 13:51:11.000000000 +0900
> +++ pbuilder-0.213+nmu1/pbuilder-buildpackage-funcs	2013-02-11 16:44:51.000000000 +0900
> @@ -112,3 +112,22 @@
>          export CCACHE_DIR="$CCACHEDIR"
>      fi
>  }
> +
> +function setup_clang() {
> +    # set appropriate GCC version.
> +    if [ -z $GCC_VERSION ]; then
> +	    GCC_VERSION=$(readlink /usr/bin/gcc | sed 's/^gcc\-//')
> +    fi
> +
> +    $CHROOTEXEC usr/bin/apt-get -y "${APTGETOPT[@]}" install clang
> +
> +    echo -e "\e[33mReplace gcc, g++ & cpp by clang\e[m"
> +    for compiler in gcc-"$GCC_VERSION" cpp-"$GCC_VERSION" g++-"$GCC_VERSION"
> +    do
> +	$CHROOTEXEC rm /usr/bin/$compiler &&
> +	$CHROOTEXEC ln -s /usr/bin/clang /usr/bin/$compiler 
> +    done
> +
> +    echo -e "\e[33mCheck if gcc, g++ & cpp are actually clang\e[m"
> +    $CHROOTEXEC usr/bin/gcc --version| grep clang > /dev/null || exit 1
> +}
> diff -Nru pbuilder-0.213/pbuilder-checkparams pbuilder-0.213+nmu1/pbuilder-checkparams
> --- pbuilder-0.213/pbuilder-checkparams	2012-03-09 07:54:41.000000000 +0900
> +++ pbuilder-0.213+nmu1/pbuilder-checkparams	2013-02-11 14:20:54.000000000 +0900
> @@ -260,6 +260,10 @@
>  	    TWICE="yes"
>  	    shift;
>  	    ;;
> +	--with-clang)
> +	    CLANG="yes"
> +	    shift;
> +	    ;;
>  	--) # end of processing for this
>  	    shift;
>  	    break;
> diff -Nru pbuilder-0.213/pbuilder-modules pbuilder-0.213+nmu1/pbuilder-modules
> --- pbuilder-0.213/pbuilder-modules	2012-03-31 13:50:46.000000000 +0900
> +++ pbuilder-0.213+nmu1/pbuilder-modules	2013-02-11 14:51:33.000000000 +0900
> @@ -79,6 +79,7 @@
>   --debootstrapopts [debootstrap options]
>   --save-after-login/--save-after-exec
>   --debootstrap [debootstrap|cdebootstrap]
> + --with-clang
>  
>  pdebuild-specific pbuilder-options:
>   --pbuilderroot [command to obtain root privilege for pbuilder] 
> diff -Nru pbuilder-0.213/pbuilder.8 pbuilder-0.213+nmu1/pbuilder.8
> --- pbuilder-0.213/pbuilder.8	2012-03-09 07:54:41.000000000 +0900
> +++ pbuilder-0.213+nmu1/pbuilder.8	2013-02-11 14:35:27.000000000 +0900
> @@ -534,6 +534,10 @@
>  properly.  The resulting packages are the ones from the second build.
>  
>  .TP
> +.BI "\-\-with\-clang"
> +Build the package with clang, instead of gcc.
> +
> +.TP
>  .BI "\-\-preserve\-buildplace"
>  Do not clean the
>  .B "\-\-buildplace"