diff --git a/deps/blastrampoline.mk b/deps/blastrampoline.mk
index 2e9a14cd6b7be..bd1cb65c6ae2d 100644
--- a/deps/blastrampoline.mk
+++ b/deps/blastrampoline.mk
@@ -6,16 +6,25 @@ BLASTRAMPOLINE_GIT_URL := https://github.com/JuliaLinearAlgebra/libblastrampolin
 BLASTRAMPOLINE_TAR_URL = https://api.github.com/repos/JuliaLinearAlgebra/libblastrampoline/tarball/$1
 $(eval $(call git-external,blastrampoline,BLASTRAMPOLINE,,,$(BUILDDIR)))
 
+BLASTRAMPOLINE_BUILD_OPTS := $(MAKE_COMMON) CC="$(CC) $(SANITIZE_OPTS)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)"
+BLASTRAMPOLINE_BUILD_OPTS += ARCH="$(ARCH)" OS="$(OS)"
+
 $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/build-configured: $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/source-extracted
 	mkdir -p $(dir $@)
 	echo 1 > $@
 
+BLASTRAMPOLINE_BUILD_ROOT := $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/src
 $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/build-compiled: $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/build-configured
-	cd $(dir $@)/src && $(MAKE) $(MAKE_COMMON) CC="$(CC) $(SANITIZE_OPTS)"
+	cd $(dir $@)/src && $(MAKE) $(BLASTRAMPOLINE_BUILD_OPTS)
+ifeq ($(OS), WINNT)
+	# Windows doesn't like soft link, use hard link
+	cd $(BLASTRAMPOLINE_BUILD_ROOT)/build/ && \
+		cp -f --dereference --link libblastrampoline.dll libblastrampoline.dll
+endif
 	echo 1 > $@
 
 define BLASTRAMPOLINE_INSTALL
-	$(MAKE) -C $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/src $(MAKE_COMMON) install DESTDIR="$2"
+	$(MAKE) -C $(BLASTRAMPOLINE_BUILD_ROOT) install $(BLASTRAMPOLINE_BUILD_OPTS) DESTDIR="$2"
 endef
 $(eval $(call staged-install, \
 	blastrampoline,$(BLASTRAMPOLINE_SRC_DIR), \
@@ -23,6 +32,11 @@ $(eval $(call staged-install, \
 	$$(BLASTRAMPOLINE_OBJ_TARGET), \
 	$$(INSTALL_NAME_CMD)libblastrampoline.$$(SHLIB_EXT) $$(build_shlibdir)/libblastrampoline.$$(SHLIB_EXT)))
 
+clean-blastrampoline:
+	-$(MAKE) -C $(BLASTRAMPOLINE_BUILD_ROOT) clean
+	-$(RM) $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/build-compiled \
+		$(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/build-configured
+
 get-blastrampoline: $(BLASTRAMPOLINE_SRC_FILE)
 extract-blastrampoline: $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/source-extracted
 configure-blastrampoline: extract-blastrampoline