diff --git a/lib/Makefile b/lib/Makefile
index c621f63..181d4a7 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -32,11 +32,15 @@
 # ################################################################
 
 # Version numbers
-LIBVER_MAJOR=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < zstd.h`
-LIBVER_MINOR=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < zstd.h`
-LIBVER_PATCH=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < zstd.h`
-LIBVER  = $(LIBVER_MAJOR).$(LIBVER_MINOR).$(LIBVER_PATCH)
-VERSION?= $(LIBVER)
+LIBVER_MAJOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < zstd.h`
+LIBVER_MINOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < zstd.h`
+LIBVER_PATCH_SCRIPT:=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < zstd.h`
+LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
+LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
+LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
+LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
+LIBVER := $(shell echo $(LIBVER_SCRIPT))
+VERSION:= $(LIBVER)
 
 DESTDIR?=
 PREFIX ?= /usr/local
@@ -98,12 +102,13 @@
 #make install is validated only for Linux, OSX, kFreeBSD and Hurd targets
 ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU))
 
-libzstd.pc: libzstd.pc.in Makefile
+libzstd.pc:
+libzstd.pc: libzstd.pc.in
 	@echo creating pkgconfig
 	@sed -e 's|@PREFIX@|$(PREFIX)|' \
-            -e 's|@LIBDIR@|$(LIBDIR)|' \
-            -e 's|@INCLUDEDIR@|$(INCLUDEDIR)|' \
-            -e 's|@VERSION@|$(VERSION)|' \
+             -e 's|@LIBDIR@|$(LIBDIR)|' \
+             -e 's|@INCLUDEDIR@|$(INCLUDEDIR)|' \
+             -e 's|@VERSION@|$(VERSION)|' \
              $< >$@
 
 install: libzstd libzstd.pc