diff --git a/.gitignore b/.gitignore
index 4cfff97..2bb1416 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@ argon2
 libargon2.a
 libargon2.so*
 libargon2.dylib
+libargon2.pc
 .DS_Store
 src/*.o
 src/blake2/*.o
diff --git a/Makefile b/Makefile
index 1e1129f..837e7f7 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,13 @@
 RUN = argon2
 BENCH = bench
 GENKAT = genkat
+ARGON2_VERSION ?= ZERO
+
+# installation parameters for staging area and final installation path
+# Note; if Linux and not Debian/Ubuntu version also add lib override to make command-line
+#       for RedHat/Fedora, add: LIBRARY_REL=lib64
+DESTDIR ?=
+PREFIX ?= /usr
 
 # Increment on an ABI breaking change
 ABI_VERSION = 1
@@ -56,40 +63,51 @@ endif
 
 BUILD_PATH := $(shell pwd)
 KERNEL_NAME := $(shell uname -s)
+MACHINE_NAME := $(shell uname -m)
+
+LIB_NAME = argon2
+PC_NAME = lib$(LIB_NAME).pc
+PC_SRC = $(PC_NAME).in
 
-LIB_NAME=argon2
 ifeq ($(KERNEL_NAME), Linux)
 	LIB_EXT := so.$(ABI_VERSION)
 	LIB_CFLAGS := -shared -fPIC -fvisibility=hidden -DA2_VISCTL=1
 	SO_LDFLAGS := -Wl,-soname,lib$(LIB_NAME).$(LIB_EXT)
 	LINKED_LIB_EXT := so
+	PC_EXTRA_LIBS ?= -lrt -ldl
 endif
-ifeq ($(KERNEL_NAME), $(filter $(KERNEL_NAME),FreeBSD NetBSD OpenBSD))
+ifeq ($(KERNEL_NAME), $(filter $(KERNEL_NAME),DragonFly FreeBSD NetBSD OpenBSD))
 	LIB_EXT := so
 	LIB_CFLAGS := -shared -fPIC
+	PC_EXTRA_LIBS ?=
 endif
 ifeq ($(KERNEL_NAME), Darwin)
 	LIB_EXT := $(ABI_VERSION).dylib
 	LIB_CFLAGS := -dynamiclib -install_name @rpath/lib$(LIB_NAME).$(LIB_EXT)
 	LINKED_LIB_EXT := dylib
+	PC_EXTRA_LIBS ?=
 endif
 ifeq ($(findstring CYGWIN, $(KERNEL_NAME)), CYGWIN)
 	LIB_EXT := dll
 	LIB_CFLAGS := -shared -Wl,--out-implib,lib$(LIB_NAME).$(LIB_EXT).a
+	PC_EXTRA_LIBS ?=
 endif
 ifeq ($(findstring MINGW, $(KERNEL_NAME)), MINGW)
 	LIB_EXT := dll
 	LIB_CFLAGS := -shared -Wl,--out-implib,lib$(LIB_NAME).$(LIB_EXT).a
+	PC_EXTRA_LIBS ?=
 endif
 ifeq ($(findstring MSYS, $(KERNEL_NAME)), MSYS)
 	LIB_EXT := dll
 	LIB_CFLAGS := -shared -Wl,--out-implib,lib$(LIB_NAME).$(LIB_EXT).a
+	PC_EXTRA_LIBS ?=
 endif
 ifeq ($(KERNEL_NAME), SunOS)
 	CC := gcc
 	CFLAGS += -D_REENTRANT
 	LIB_EXT := so
 	LIB_CFLAGS := -shared -fPIC
+	PC_EXTRA_LIBS ?=
 endif
 
 ifeq ($(KERNEL_NAME), Linux)
@@ -111,20 +129,45 @@ HEADERS = include/argon2.h
 
 INSTALL = install
 
-DESTDIR =
-PREFIX = /usr
-INCLUDE_REL = include
-LIBRARY_REL = lib
-BINARY_REL = bin
+# relative paths for different OS
+ifeq ($(KERNEL_NAME), $(filter $(KERNEL_NAME),DragonFly FreeBSD))
+
+# default for FreeBSD
+BINARY_REL ?= bin
+INCLUDE_REL ?= include
+LIBRARY_REL ?= lib
+PKGCONFIG_REL ?= libdata
+
+else ifeq ($(KERNEL_NAME)-$(MACHINE_NAME), Linux-x86_64)
+
+# default for Debian/Ubuntu x86_64
+BINARY_REL ?= bin
+INCLUDE_REL ?= include
+LIBRARY_REL ?= lib/x86_64-linux-gnu
+PKGCONFIG_REL ?= $(LIBRARY_REL)
+
+else
+
+# NetBSD, ... and Linux64/Linux32 variants that use plain lib directory
+BINARY_REL ?= bin
+INCLUDE_REL ?= include
+LIBRARY_REL ?= lib
+PKGCONFIG_REL ?= $(LIBRARY_REL)
+
+endif
 
+# absolute paths to staging area
 INST_INCLUDE = $(DESTDIR)$(PREFIX)/$(INCLUDE_REL)
 INST_LIBRARY = $(DESTDIR)$(PREFIX)/$(LIBRARY_REL)
 INST_BINARY = $(DESTDIR)$(PREFIX)/$(BINARY_REL)
+INST_PKGCONFIG = $(DESTDIR)$(PREFIX)/$(PKGCONFIG_REL)/pkgconfig
 
-.PHONY: clean dist format $(GENKAT) all install
-
+# main target
+.PHONY: all
 all: $(RUN) libs
-libs: $(LIBRARIES)
+
+.PHONY: libs
+libs: $(LIBRARIES) $(PC_NAME)
 
 $(RUN):	        $(SRC) $(SRC_RUN)
 		$(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@
@@ -141,47 +184,70 @@ $(LIB_SH): 	$(SRC)
 $(LIB_ST): 	$(OBJ)
 		ar rcs $@ $^
 
+.PHONY: clean
 clean:
-		rm -f $(RUN) $(BENCH) $(GENKAT)
-		rm -f $(LIB_SH) $(LIB_ST) kat-argon2*
+		rm -f '$(RUN)' '$(BENCH)' '$(GENKAT)'
+		rm -f '$(LIB_SH)' '$(LIB_ST)' kat-argon2* '$(PC_NAME)'
 		rm -f testcase
 		rm -rf *.dSYM
 		cd src/ && rm -f *.o
 		cd src/blake2/ && rm -f *.o
 		cd kats/ &&  rm -f kat-* diff* run_* make_*
 
+
+# all substitutions to pc template
+SED_COMMANDS  = /^\#\#.*$$/d;
+SED_COMMANDS += s\#@PREFIX@\#$(PREFIX)\#g;
+SED_COMMANDS += s\#@EXTRA_LIBS@\#$(PC_EXTRA_LIBS)\#g;
+SED_COMMANDS += s\#@UPSTREAM_VER@\#$(ARGON2_VERSION)\#g;
+SED_COMMANDS += s\#@HOST_MULTIARCH@\#$(LIBRARY_REL)\#g;
+SED_COMMANDS += s\#@INCLUDE@\#$(INCLUDE_REL)\#g;
+
+# substitute PREFIX and PC_EXTRA_LIBS into pkgconfig pc file
+$(PC_NAME): $(PC_SRC)
+		sed '$(SED_COMMANDS)' < '$(PC_SRC)' > '$@'
+
+
+.PHONY: dist
 dist:
 		cd ..; \
 		tar -c --exclude='.??*' -z -f $(DIST)-`date "+%Y%m%d"`.tgz $(DIST)/*
 
+.PHONY: test
 test:           $(SRC) src/test.c
 		$(CC) $(CFLAGS)  -Wextra -Wno-type-limits $^ -o testcase
 		@sh kats/test.sh
 		./testcase
 
+.PHONY: testci
 testci:         $(SRC) src/test.c
 		$(CC) $(CI_CFLAGS) $^ -o testcase
 		@sh kats/test.sh
 		./testcase
 
-.PHONY: test
 
+.PHONY: format
 format:
 		clang-format -style="{BasedOnStyle: llvm, IndentWidth: 4}" \
 			-i include/*.h src/*.c src/*.h src/blake2/*.c src/blake2/*.h
 
+.PHONY: install
 install: $(RUN) libs
 	$(INSTALL) -d $(INST_INCLUDE)
 	$(INSTALL) -m 0644 $(HEADERS) $(INST_INCLUDE)
 	$(INSTALL) -d $(INST_LIBRARY)
-	$(INSTALL) $(LIBRARIES) $(INST_LIBRARY)
+	$(INSTALL) -m 0644 $(LIBRARIES) $(INST_LIBRARY)
 ifdef LINKED_LIB_SH
 	cd $(INST_LIBRARY) && ln -s $(notdir $(LIB_SH) $(LINKED_LIB_SH))
 endif
 	$(INSTALL) -d $(INST_BINARY)
 	$(INSTALL) $(RUN) $(INST_BINARY)
+	$(INSTALL) -d $(INST_PKGCONFIG)
+	$(INSTALL) -m 0644 $(PC_NAME) $(INST_PKGCONFIG)
 
+.PHONY: uninstall
 uninstall:
 	cd $(INST_INCLUDE) && rm -f $(notdir $(HEADERS))
 	cd $(INST_LIBRARY) && rm -f $(notdir $(LIBRARIES) $(LINKED_LIB_SH))
 	cd $(INST_BINARY) && rm -f $(notdir $(RUN))
+	cd $(INST_PKG_CONFIG) && rm -f $(notdir $(PC_NAME))
diff --git a/libargon2.pc b/libargon2.pc
deleted file mode 100644
index 8bce107..0000000
--- a/libargon2.pc
+++ /dev/null
@@ -1,16 +0,0 @@
-# libargon2 info for pkg-config
-## Template for downstream installers:
-## - replace @HOST_MULTIARCH@ with target arch, eg 'x86_64-linux-gnu'
-## - replace @UPSTREAM_VER@ with current version, eg '20160406'
-
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${prefix}/lib/@HOST_MULTIARCH@
-includedir=${prefix}/include
-
-Name: libargon2
-Description: Development libraries for libargon2
-Version: @UPSTREAM_VER@
-Libs: -L${libdir} -largon2 -lrt -ldl
-Cflags:
-URL: https://github.com/P-H-C/phc-winner-argon2
diff --git a/libargon2.pc.in b/libargon2.pc.in
new file mode 100644
index 0000000..7185324
--- /dev/null
+++ b/libargon2.pc.in
@@ -0,0 +1,18 @@
+# libargon2 info for pkg-config
+## Template for downstream installers:
+## - replace @UPSTREAM_VER@ with current version, e.g. '20160406'
+## - replace @HOST_MULTIARCH@ with target arch lib, e.g. 'lib', 'lib/x86_64-linux-gnu' or 'lib64'
+## - replace @PREFIX@ with install path, e.g. '/usr', '/usr/local', '/usr/pkg'
+## - replace @INCLUDE@ with incluse path, e.g. 'include' or 'include/argon2'
+
+prefix=@PREFIX@
+exec_prefix=${prefix}
+libdir=${prefix}/@HOST_MULTIARCH@
+includedir=${prefix}/@INCLUDE@
+
+Name: libargon2
+Description: Development libraries for libargon2
+Version: @UPSTREAM_VER@
+Libs: -L${libdir} -largon2 @EXTRA_LIBS@
+Cflags: -I${includedir}
+URL: https://github.com/P-H-C/phc-winner-argon2