fix up grep result checking, use patch on 32-bit

tools/build_openblas.sh

@@ -93,9 +93,7 @@ OPENBLAS_VERSION=$(git describe --tags --abbrev=8)
 
 # Patch OpenBLAS build to resolve all symbols and avoid linking
 # with libquadmath
-if [ "$BUILD_BITS" == 64 ]; then
-   patch -p1 < ../patches-windows/openblas-make-libs.patch
-fi
+patch -p1 < ../patches-windows/openblas-make-libs.patch
 
 # Build OpenBLAS
 make BINARY=$build_bits DYNAMIC_ARCH=1 USE_THREAD=1 USE_OPENMP=0 \
@@ -108,10 +106,7 @@ make BINARY=$build_bits DYNAMIC_ARCH=1 USE_THREAD=1 USE_OPENMP=0 \
      $interface_flags
 make PREFIX=$openblas_root/$build_bits $interface_flags install
 DLL_BASENAME=libscipy_openblas${LIBNAMESUFFIX}
-echo ------
-ls *.dll.a
-echo ------
-cp -f *.dll.a $openblas_root/$build_bits/lib/{DLL_BASENAME}.dll.a
+cp -f *.dll.a $openblas_root/$build_bits/lib/${DLL_BASENAME}.dll.a
 
 # OpenBLAS does not build a symbol-suffixed static library on Windows:
 # do it ourselves. On 32-bit builds, the objcopy.def names need a '_' prefix
@@ -134,22 +129,30 @@ cp -f "${static_libname}.renamed" "$openblas_root/$build_bits/lib/${DLL_BASENAME
 # Make sure quadmath library is not statically linked in to the DLL by checking
 # the output.map generated by the linker when using `-Wl,-gc-sections -Wl,-s`
 # the map will have libname(o-filename) for each function pulled out of the
-# library
-# The file itself appears in the map
-grep -A 3 "libquadmath.a(" output.map
+# library libname
+# The file itself appears in the map, so look for "libquadmath.a(". Use '-A 3'
+# to show a bit of context if any symbols appear (which should not happen)
+set +e
+grep -A 3 "libquadmath.a(" exports/output.map
 case $? in
   0)
-  echo "link uses libquadmath.a when it should not"
-  exit -1
-  ;;
-  2)
-  echo "could not find 'output.map' to verify linking avoids libquadmath.a"
-  exit -1
+    echo "link uses libquadmath.a when it should not"
+    exit -1
   ;;
   1)
-  echo "verified no 'libquadmath' used when linking"
+    if [ -f exports/output.map ]; then
+      echo "Good, verified no 'libquadmath' used when linking"
+    else
+      echo "error occurred"
+      exit -1
+    fi
+  ;;
+  *)
+    echo "grep returned $?, error occurred"
+    exit -1
   ;;
 esac
+set -e
 
 cd $openblas_root
 # Copy library link file for custom name