Added preservestaticlibs in base/{clang,llvm,lld}

base/clang/clang.SMBuild

@@ -5,6 +5,7 @@ homepage="https://clang.llvm.org/"
 download=""
 requires="llvm"
 desc="LLVM project-based C language family front-end"
+preservestaticlibs=1
 
 build() {
   mkandenterbuilddir

base/lld/lld.SMBuild

@@ -5,6 +5,7 @@ homepage="https://lld.llvm.org/"
 download="https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/lld-$version.src.tar.xz"
 desc="Drop-in replacement for binutils gold and bfd linkers"
 requires="llvm"
+preservestaticlibs=1
 
 build() {
   mkandenterbuilddir

base/llvm/llvm.SMBuild

@@ -4,6 +4,7 @@ build=2sml
 homepage="http://llvm.org/"
 desc="LLVM compiler toolkit"
 requires="libffi libxml2 perl"
+preservestaticlibs=1
 
 build() {
   mkandenterbuilddir