diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 12b7304d55dcd2e64515c6a0af7c777a44f3e645..b1e322860a7f3b2a4ad56bd47c7369267b3d7ff2 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -119,10 +119,10 @@ CLANG ?= clang
 
 # Trick to allow make to be run from this directory
 all:
-	$(MAKE) -C ../../ $$PWD/
+	$(MAKE) -C ../../ $(CURDIR)/
 
 clean:
-	$(MAKE) -C ../../ M=$$PWD clean
+	$(MAKE) -C ../../ M=$(CURDIR) clean
 	@rm -f *~
 
 # Verify LLVM compiler tools are available and bpf target is supported by llc
diff --git a/samples/connector/Makefile b/samples/connector/Makefile
index 04b9622b6f515082a15f021a41e71b9223e14bae..91762d946a53eb08d301be0448f80fcdadafe999 100644
--- a/samples/connector/Makefile
+++ b/samples/connector/Makefile
@@ -13,4 +13,4 @@ HOSTCFLAGS_ucon.o += -I$(objtree)/usr/include
 all: modules
 
 modules clean:
-	$(MAKE) -C ../.. SUBDIRS=$(PWD) $@
+	$(MAKE) -C ../.. SUBDIRS=$(CURDIR) $@
diff --git a/tools/build/Makefile b/tools/build/Makefile
index 8332959fbca4fb5b9a6c4f89b5ef479133ca9b43..aaf7ed329a453a87b91a38f73b6cc25c27764c82 100644
--- a/tools/build/Makefile
+++ b/tools/build/Makefile
@@ -1,5 +1,5 @@
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 endif
 
diff --git a/tools/gpio/Makefile b/tools/gpio/Makefile
index 250a891e6ef0ecd082da136102b3c5a7a6f33a7a..b4401536cfa90f370bbe7c131aa4cba847ad4e2a 100644
--- a/tools/gpio/Makefile
+++ b/tools/gpio/Makefile
@@ -3,7 +3,7 @@ include ../scripts/Makefile.include
 bindir ?= /usr/bin
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 endif
 
diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile
index 0a6fda9837f7dd3a60a89fbe3083bf8a3835b6f3..adba83b325d556d4b9280114905cdd3fb4b7313a 100644
--- a/tools/lib/api/Makefile
+++ b/tools/lib/api/Makefile
@@ -2,7 +2,7 @@ include ../../scripts/Makefile.include
 include ../../scripts/utilities.mak		# QUIET_CLEAN
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 62d89d50fcbd0484e7c38883b9d3d512e627eaef..e2efddf1023177c202d626257c8466f3cb8c40c3 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -7,7 +7,7 @@ BPF_EXTRAVERSION = 1
 MAKEFLAGS += --no-print-directory
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
diff --git a/tools/lib/lockdep/Makefile b/tools/lib/lockdep/Makefile
index 1d57af56814b8671c10d9619202f042ad5c031d4..3bc0ef9f8923060c6bf6f9aebda2bdc4866e74f7 100644
--- a/tools/lib/lockdep/Makefile
+++ b/tools/lib/lockdep/Makefile
@@ -50,7 +50,7 @@ ifndef VERBOSE
 endif
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
diff --git a/tools/lib/subcmd/Makefile b/tools/lib/subcmd/Makefile
index ce4b7e5275661774d6db64e1eeaa5086c7de732a..3f8cc44a0dbdad3665ad7b1f03a58a6ce3f92707 100644
--- a/tools/lib/subcmd/Makefile
+++ b/tools/lib/subcmd/Makefile
@@ -2,7 +2,7 @@ include ../../scripts/Makefile.include
 include ../../scripts/utilities.mak		# QUIET_CLEAN
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index 7851df1490e0a81f6a17776bbdb464f564a99894..938f73cec20d211e88c708c8b38b947e34816480 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -86,7 +86,7 @@ ifndef VERBOSE
 endif
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index 041b493ad3ab5133f8503e549f6c1cfc717d4b89..27e019c09bd2c41d8014e30bd79342a91fc28e09 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -11,12 +11,12 @@ LD = ld
 AR = ar
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 endif
 
 SUBCMD_SRCDIR		= $(srctree)/tools/lib/subcmd/
-LIBSUBCMD_OUTPUT	= $(if $(OUTPUT),$(OUTPUT),$(PWD)/)
+LIBSUBCMD_OUTPUT	= $(if $(OUTPUT),$(OUTPUT),$(CURDIR)/)
 LIBSUBCMD		= $(LIBSUBCMD_OUTPUT)libsubcmd.a
 
 OBJTOOL    := $(OUTPUT)objtool
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 982d6439bb07b974d069304a0d4e1686aeaa02e5..5bdef736a662bbcf87244b8b41dbabe4a66e7faf 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -94,7 +94,7 @@ LC_NUMERIC=C
 export LC_COLLATE LC_NUMERIC
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
 endif
diff --git a/tools/perf/tests/make b/tools/perf/tests/make
index 143f4d549769abf769c32361f0abecdef7efd880..3482e9f67326530cec80029851f9fd7c6a24e386 100644
--- a/tools/perf/tests/make
+++ b/tools/perf/tests/make
@@ -42,7 +42,7 @@ LC_NUMERIC=C
 export LC_COLLATE LC_NUMERIC
 
 ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
 endif
diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index 8358863259c53463d86d0578b9837b10201dc266..d6e1c02ddcfead4532cdc73f2d81207f62a8db5f 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -108,9 +108,6 @@ MKDIR = mkdir
 # Now we set up the build system
 #
 
-# set up PWD so that older versions of make will work with our build.
-PWD = $(shell pwd)
-
 GMO_FILES = ${shell for HLANG in ${LANGUAGES}; do echo $(OUTPUT)po/$$HLANG.gmo; done;}
 
 export CROSS CC AR STRIP RANLIB CFLAGS LDFLAGS LIB_OBJS
diff --git a/tools/power/cpupower/debug/kernel/Makefile b/tools/power/cpupower/debug/kernel/Makefile
index 96b146fe6f8d02db3d94dccefe401919a693450f..a8a6f8eec5c2d5d125d0e43ee1a4316d4b91b2d6 100644
--- a/tools/power/cpupower/debug/kernel/Makefile
+++ b/tools/power/cpupower/debug/kernel/Makefile
@@ -1,7 +1,6 @@
 obj-m	:=
 
 KDIR	:= /lib/modules/$(shell uname -r)/build
-PWD		:= $(shell pwd)
 KMISC   := /lib/modules/$(shell uname -r)/cpufrequtils/
 
 ifeq ("$(CONFIG_X86_TSC)", "y")
@@ -9,7 +8,7 @@ ifeq ("$(CONFIG_X86_TSC)", "y")
 endif
 
 default:
-	$(MAKE) -C $(KDIR) M=$(PWD)
+	$(MAKE) -C $(KDIR) M=$(CURDIR)
 
 clean:
 	- rm -rf *.o *.ko .tmp-versions .*.cmd .*.mod.* *.mod.c