[Buildroot] [PATCH] libarchive: avoid some tools to build statically on shared builds

[Vicente Olivert Riera]

Some libarchive tools, like bsdtar, builds statically by default
although libarchive itself is being built dynamically. We can force
those tools to build the same way as libarchive by using the right
configure options.

Fixes:
  http://autobuild.buildroot.net/results/b8f/b8f7a29787ea1cc5c98e4cbd5f47f257f9b306f2/

Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
---
 package/libarchive/libarchive.mk |   24 +++++++++++++++++++++---
 1 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/package/libarchive/libarchive.mk b/package/libarchive/libarchive.mk
index 8c6951d..979e65c 100644
--- a/package/libarchive/libarchive.mk
+++ b/package/libarchive/libarchive.mk
@@ -9,9 +9,27 @@ LIBARCHIVE_SITE = http://www.libarchive.org/downloads
 LIBARCHIVE_INSTALL_STAGING = YES
 LIBARCHIVE_LICENSE = BSD-2c, BSD-3c
 LIBARCHIVE_LICENSE_FILES = COPYING
-LIBARCHIVE_CONF_OPT = --without-lzma \
-	$(if $(BR2_PACKAGE_LIBARCHIVE_BSDTAR),--enable-bsdtar,--disable-bsdtar) \
-	$(if $(BR2_PACKAGE_LIBARCHIVE_BSDCPIO),--enable-bsdcpio,--disable-bsdcpio)
+LIBARCHIVE_CONF_OPT = --without-lzma
+
+ifeq ($(BR2_PACKAGE_LIBARCHIVE_BSDTAR),y)
+ifeq ($(BR2_PREFER_STATIC_LIB),y)
+LIBARCHIVE_CONF_OPT += --enable-bsdtar=static
+else
+LIBARCHIVE_CONF_OPT += --enable-bsdtar=shared
+endif
+else
+LIBARCHIVE_CONF_OPT += --disable-bsdtar
+endif
+
+ifeq ($(BR2_PACKAGE_LIBARCHIVE_BSDCPIO),y)
+ifeq ($(BR2_PREFER_STATIC_LIB),y)
+LIBARCHIVE_CONF_OPT += --enable-bsdcpio=static
+else
+LIBARCHIVE_CONF_OPT += --enable-bsdcpio=shared
+endif
+else
+LIBARCHIVE_CONF_OPT += --disable-bsdcpio
+endif
 
 ifeq ($(BR2_PACKAGE_ACL),y)
 LIBARCHIVE_DEPENDENCIES += acl
-- 
1.7.1