PROJECT_NAME := $(LLVMPackageName)
endif
-PROJ_OBJ_DIR := $(shell $(PWD))
-PROJ_OBJ_ROOT := $(shell cd $(PROJ_OBJ_DIR)/$(LEVEL); $(PWD))
+# The macro below is expanded when 'realpath' is not built-in.
+# Built-in 'realpath' is available on GNU Make 3.81.
+realpath = $(shell cd $(1); $(PWD))
+
+PROJ_OBJ_DIR := $(call realpath, .)
+PROJ_OBJ_ROOT := $(call realpath, $(PROJ_OBJ_DIR)/$(LEVEL))
ifeq ($(PROJECT_NAME),llvm)
-LLVM_SRC_ROOT := $(shell cd @abs_top_srcdir@; $(PWD))
-LLVM_OBJ_ROOT := $(shell cd @abs_top_builddir@; $(PWD))
-PROJ_SRC_ROOT := $(shell cd $(LLVM_SRC_ROOT); $(PWD))
-PROJ_SRC_DIR := $(shell cd $(LLVM_SRC_ROOT)/$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR)); $(PWD))
+LLVM_SRC_ROOT := $(call realpath, @abs_top_srcdir@)
+LLVM_OBJ_ROOT := $(call realpath, @abs_top_builddir@)
+PROJ_SRC_ROOT := $(LLVM_SRC_ROOT)
+PROJ_SRC_DIR := $(call realpath, $(LLVM_SRC_ROOT)/$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR)))
prefix := @prefix@
PROJ_prefix := $(prefix)
PROJ_VERSION := $(LLVMVersion)
ifndef LLVM_OBJ_ROOT
$(error Projects must define LLVM_OBJ_ROOT)
endif
-PROJ_SRC_DIR := $(shell cd $(PROJ_SRC_ROOT)/$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR)); $(PWD))
+PROJ_SRC_DIR := $(call realpath, $(PROJ_SRC_ROOT)/$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR)))
prefix := $(PROJ_INSTALL_ROOT)
PROJ_prefix := $(prefix)
ifndef PROJ_VERSION
# When ENABLE_PROFILING is enabled, profile instrumentation is done
# and output is put into the "<Flavor>+Profile" directories, where
-# <Flavor> is either Debug or Release depending on how other builkd
-# flags are set.. Otherwise, output is put in the <Flavor>
+# <Flavor> is either Debug or Release depending on how other build
+# flags are set. Otherwise, output is put in the <Flavor>
# directories.
#ENABLE_PROFILING = 1
@ENABLE_PROFILING@