package/libzip: fix build with musl-fts

Fixes:
 - http://autobuild.buildroot.org/results/89f5fc111bb8bcecbe05ab79d62ac809094b6ce1

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/libzip/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_LIBZIP
 	bool "libzip"
 	depends on !BR2_STATIC_LIBS # dlsym()
+	select BR2_PACKAGE_MUSL_FTS if !BR2_TOOLCHAIN_USES_GLIBC
 	select BR2_PACKAGE_ZLIB
 	help
 	  C library for reading, creating, and modifying zip archives.

package/libzip/libzip.mk

@@ -33,5 +33,10 @@ else
 LIBZIP_CONF_OPTS += -DENABLE_OPENSSL=OFF
 endif
 
+ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),)
+LIBZIP_DEPENDENCIES += musl-fts
+LIBZIP_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS=-lfts
+endif
+
 $(eval $(cmake-package))
 $(eval $(host-cmake-package))