Use llvm-ar with the flag 'L' instead of a helper MRI script for merging archives

Dockerfile

@@ -37,7 +37,7 @@ RUN ./build-mingw-w64.sh $TOOLCHAIN_PREFIX && \
     rm -rf /build/*
 
 # Build libunwind/libcxxabi/libcxx
-COPY build-libcxx.sh merge-archives.sh ./
+COPY build-libcxx.sh ./
 RUN ./build-libcxx.sh $TOOLCHAIN_PREFIX && \
     rm -rf /build/*
 

Dockerfile.dev

@@ -65,7 +65,7 @@ RUN cd test && \
     done
 
 # Build libunwind/libcxxabi/libcxx
-COPY build-libcxx.sh merge-archives.sh ./
+COPY build-libcxx.sh ./
 RUN ./build-libcxx.sh $TOOLCHAIN_PREFIX
 
 # Build C++ test applications

build-libcxx.sh

@@ -66,7 +66,6 @@ if [ -n "$SYNC" ] || [ -n "$CHECKOUT_LIBCXX" ]; then
 fi
 
 LIBCXX=$(pwd)/libcxx
-MERGE_ARCHIVES=$(pwd)/merge-archives.sh
 
 case $(uname) in
 MINGW*)
@@ -125,7 +124,7 @@ build_all() {
         else
             # Merge libpsapi.a into the static library libunwind.a, to
             # avoid having to specify -lpsapi when linking to it.
-            $MERGE_ARCHIVES \
+            llvm-ar qcsL \
                 $PREFIX/$arch-w64-mingw32/lib/libunwind.a \
                 $PREFIX/$arch-w64-mingw32/lib/libpsapi.a
         fi
@@ -219,12 +218,12 @@ build_all() {
         make -j$CORES
         make install
         if [ "$type" = "shared" ]; then
-            $MERGE_ARCHIVES \
+            llvm-ar qcsL \
                 $PREFIX/$arch-w64-mingw32/lib/libc++.dll.a \
                 $PREFIX/$arch-w64-mingw32/lib/libunwind.dll.a
             cp lib/libc++.dll $PREFIX/$arch-w64-mingw32/bin
         else
-            $MERGE_ARCHIVES \
+            llvm-ar qcsL \
                 $PREFIX/$arch-w64-mingw32/lib/libc++.a \
                 $PREFIX/$arch-w64-mingw32/lib/libunwind.a
         fi

merge-archives.sh

@@ -1,36 +0,0 @@
-#!/bin/sh
-
-set -e
-
-if [ $# -lt 2 ]; then
-    echo $0 lib add1 [add2...]
-    exit 1
-fi
-
-: ${AR:=llvm-ar}
-: ${RANLIB:=llvm-ranlib}
-
-SCRIPT=merge.mri
-OUT=tmp.a
-TARGET=$1
-
-rm -f $SCRIPT
-
-echo "CREATE $OUT" >> $SCRIPT
-while [ $# -gt 0 ]; do
-    case $(uname) in
-    MINGW*)
-        echo "ADDLIB $(cygpath -w $1)" >> $SCRIPT
-        ;;
-    *)
-        echo "ADDLIB $1" >> $SCRIPT
-        ;;
-    esac
-    shift
-done
-echo "SAVE" >> $SCRIPT
-echo "END" >> $SCRIPT
-$AR -M < $SCRIPT
-rm -f $SCRIPT
-$RANLIB $OUT
-mv $OUT $TARGET