rbutil: Fix native Windows build for tools.

- When make on Windows finds sh.exe it will try to use that. We use
  cmd.exe calls when detecting Windows, so make sure we use cmd.exe as
  shell.
- Add missing Windows compatibility to tomcrypt Makefile.

Change-Id: Iaef133ca27472a5ddf449174d540983f15c66aea

rbutil/libtools.make

@@ -22,6 +22,7 @@ endif
 # Get directory this Makefile is in for relative paths.
 TOP := $(dir $(lastword $(MAKEFILE_LIST)))
 ifeq ($(OS),Windows_NT)
+SHELL = cmd.exe
 mkdir = if not exist $(subst /,\,$(1)) mkdir $(subst /,\,$(1))
 rm = if exist $(subst /,\,$(1)) del /q /s $(subst /,\,$(1))
 else

tools/rbspeex/Makefile

@@ -12,6 +12,7 @@ SILENT = @
 endif
 
 ifeq ($(OS),Windows_NT)
+SHELL = cmd.exe
 mkdir = if not exist $(subst /,\,$(1)) mkdir $(subst /,\,$(1))
 rm = if exist $(subst /,\,$(1)) del /q /s $(subst /,\,$(1))
 else

tools/ucl/src/Makefile

@@ -13,6 +13,7 @@ SILENT = @
 endif
 
 ifeq ($(OS),Windows_NT)
+SHELL = cmd.exe
 mkdir = if not exist $(subst /,\,$(1)) mkdir $(subst /,\,$(1))
 else
 mkdir = mkdir -p $(1)

utils/tomcrypt/Makefile

@@ -13,6 +13,15 @@ ifndef V
     SILENT := @
 endif
 
+ifeq ($(OS),Windows_NT)
+SHELL = cmd.exe
+mkdir = if not exist $(subst /,\,$(1)) mkdir $(subst /,\,$(1))
+rm = if exist $(subst /,\,$(1)) del /q /s $(subst /,\,$(1))
+else
+mkdir = mkdir -p $(1)
+rm = rm -rf $(1)
+endif
+
 CFLAGS := -O3 -g -std=c99 -Wall $(DEFINES) -Isrc/headers
 LDFLAGS :=
 
@@ -38,8 +47,8 @@ $(LIB): $(OBJS)
 
 $(BUILD_DIR)/%.o: %.c
 	$(info CC $(notdir $@))
-	$(SILENT)mkdir -p $(dir $@)
+	$(SILENT)$(call mkdir, $(dir $@))
 	$(SILENT)$(CROSS)$(CC) $(CFLAGS) -c -o $@ $<
 
 clean:
-	rm -fr $(BUILDDIR) $(LIB)
+	$(call rm,$(BUILDDIR) $(LIB))