3 files changed, 4 insertions, 3 deletions
diff --git a/build.sh b/build.sh
index f5c1722..6589c04 100755
--- a/build.sh
+++ b/build.sh
@@ -18,7 +18,7 @@ CMAKE_DEFAULT_FLAGS=" $CMAKE_DEFAULT_FLAGS -DCMAKE_BUILD_TYPE=Release -DCMAKE_PR
 mkdir -p lib/prefix/include lib/prefix/lib
 if [[ "$@" != *"-lz"* ]]; then
   [ ! -e "lib/zlib" ] && echo "Make sure you've cloned submodules. (git submodule update --init --depth=1)" && exit -1
-  [[ ! -e "lib/zlib/build" && $OSTYPE != 'msys'* ]] && cd lib/zlib && mkdir build && cd build && $CC -O3 -D_LARGEFILE64_SOURCE -I.. ../*.c -c && ar rc libz.a *.o && cp libz.a ../../prefix/lib && cp ../*.h ../../prefix/include && cd ../../../
+  [[ ! -e "lib/zlib/build" && $OSTYPE != 'msys'* ]] && cd lib/zlib && mkdir build && cd build && $CC -O3 -D_LARGEFILE64_SOURCE -I.. ../*.c -c && $AR rc libz.a *.o && cp libz.a ../../prefix/lib && cp ../*.h ../../prefix/include && cd ../../../
   LDFLAGS="$LDFLAGS -lz"
 fi
 if [[ "$@" != *"-lmbedtls"* && "$@" != *"-lmbedcrypto"* ]]; then
diff --git a/src/lpm.c b/src/lpm.c
index f2e9799..2697f37 100644
--- a/src/lpm.c
+++ b/src/lpm.c
@@ -999,7 +999,7 @@ static const luaL_Reg system_lib[] = {
   #endif
 #endif
 #ifndef LITE_ARCH_TUPLE
-  #define LITE_ARCH_TUPLE ARCH_PROCESSOR "-" ARCH_PLATFORM
+  #define LITE_ARCH_TUPLE (ARCH_PROCESSOR "-" ARCH_PLATFORM)
 #endif
 
 
diff --git a/src/lpm.lua b/src/lpm.lua
index e4c47e0..ba81ce0 100644
--- a/src/lpm.lua
+++ b/src/lpm.lua
@@ -370,6 +370,7 @@ function common.join(j, l) local s = "" for i, v in ipairs(l) do if i > 1 then s
 function common.sort(t, f) table.sort(t, f) return t end
 function common.write(path, contents) local f, err = io.open(path, "wb") if not f then error("can't write to " .. path .. ": " .. err) end f:write(contents) f:flush() end
 function common.read(path) local f, err = io.open(path, "rb") if not f then error("can't read from " .. path .. ": " .. err) end return f:read("*all") end
+function common.uniq(l) local t = {} local k = {} for i,v in ipairs(l) do if not k[v] then table.insert(t, v) k[v] = true end end return t end
 function common.split(splitter, str)
   local o = 1
   local res = {}
@@ -1143,7 +1144,7 @@ function Bottle:get_plugin(id, version, filter)
       end
     end
   end  
-  return table.unpack(common.sort(candidates, function (a,b) return a.version < b.version end))
+  return table.unpack(common.sort(common.uniq(candidates), function (a,b) return a.version < b.version end))
 end