message: Remove escapes that are hipcc specific
diff: @@ -137,7 +137,7 @@ BUILD_DIR := $(MFEM_BUILD_DIR)
  BUILD_REAL_DIR := $(abspath $(BUILD_DIR))
  ifneq ($(BUILD_REAL_DIR),$(MFEM_REAL_DIR))
  BUILD_SUBDIRS = $(DIRS) config $(EM_DIRS) doc $(TEST_DIRS)
  - CONFIG_FILE_DEF = -DMFEM_CONFIG_FILE='\"$(BUILD_REAL_DIR)/config/_config.hpp\"'
  + CONFIG_FILE_DEF = -DMFEM_CONFIG_FILE='"$(BUILD_REAL_DIR)/config/_config.hpp"'
  BLD := $(if $(BUILD_REAL_DIR:$(CURDIR)=),$(BUILD_DIR)/,)
  $(if $(word 2,$(BLD)),$(error Spaces in BLD = "$(BLD)" are not supported))
  else
  