dpkg: Add PACKAGECONFIG for liblzma and enable it

liblzma is part of xz and we already build it but configure it out. This makes
no sense. Enabling it means we gain multithreaded compression and it speeds
dpkg-deb up massively. It also removes the fork overhead of separate xz processes.

Turning the existing config into a PACKAGECONFIG and turning it on by default
therefore makes best use of what we have available.

The manual RDEPENDS are no longer needed since it uses liblzma which is picked
up by the shlibs code magically.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/recipes-devtools/dpkg/dpkg.inc b/meta/recipes-devtools/dpkg/dpkg.inc
index 6abe3ae0626ac295a322a8bba102582021eb0b78..870117a3250c2961334b428a984a7fa271fa6243 100644 (file)
--- a/meta/recipes-devtools/dpkg/dpkg.inc
+++ b/meta/recipes-devtools/dpkg/dpkg.inc
@@ -4,8 +4,8 @@ SECTION = "base"
 
 DEPENDS = "zlib bzip2 perl ncurses"
 DEPENDS_class-native = "bzip2-replacement-native zlib-native virtual/update-alternatives-native gettext-native perl-native"
-RDEPENDS_${PN} = "${VIRTUAL-RUNTIME_update-alternatives} xz perl"
-RDEPENDS_${PN}_class-native = "xz-native"
+RDEPENDS_${PN} = "${VIRTUAL-RUNTIME_update-alternatives} perl"
+RDEPENDS_${PN}_class-native = ""
 
 UPSTREAM_CHECK_URI = "${DEBIAN_MIRROR}/main/d/dpkg/"
 
@@ -28,10 +28,12 @@ EXTRA_OECONF = "\
                --enable-start-stop-daemon \
                --with-libz \
                --with-libbz2 \
-               --without-liblzma \
                --without-libselinux \
                "
 
+PACKAGECONFIG = "liblzma"
+PACKAGECONFIG[liblzma] = "--with-liblzma,--without-liblzma, xz"
+
 EXTRA_OECONF += "TAR=tar"
 EXTRA_OECONF_append_class-target = " DEB_HOST_ARCH=${DPKG_ARCH}"