diff --git a/Makefile.in b/Makefile.in
index d590f73..dfd9e1e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -8,6 +8,7 @@ LIBRARY=@LIBRARY@
 HEADERS=@HEADERS@
 PKGCONFIG_DATA=@LIBRARY@/pkgconfig
 MANDIR=@MANDIR@
+GZIP_SUFFIX=@GZIP_SUFFIX@
 
 all: doc
 	$(MAKE) -C src all || exit
@@ -34,7 +35,7 @@ install-headers:
 
 install-doc: doc
 	mkdir -p $(DESTDIR)/$(MANDIR)/man3 || exit
-	cp doc/*.3.gz $(DESTDIR)/$(MANDIR)/man3 || exit
+	cp doc/*.3$(GZIP_SUFFIX) $(DESTDIR)/$(MANDIR)/man3 || exit
 
 install: all install-headers install-doc
 	mkdir -p $(DESTDIR)/$(LIBRARY) || exit
@@ -71,3 +72,4 @@ distribution: clean
 	rm -f build/ck.spec
 	rm -f build/ck.pc
 	rm -f Makefile
+	rm -f doc/Makefile
diff --git a/configure b/configure
index 9c9859a..5f696a8 100755
--- a/configure
+++ b/configure
@@ -89,6 +89,8 @@ generate()
 	    -e "s#@LDFLAGS@#$LDFLAGS#g"			\
 	    -e "s#@PTHREAD_CFLAGS@#$PTHREAD_CFLAGS#g"	\
 	    -e "s#@MANDIR@#$MANDIR#g"			\
+	    -e "s#@GZIP@#$GZIP#g"			\
+	    -e "s#@GZIP_SUFFIX@#$GZIP_SUFFIX#g"		\
 		$1 > $2
 }
 
@@ -103,6 +105,7 @@ generate_stdout()
 	echo "    PTHREAD_CFLAGS = $PTHREAD_CFLAGS"
 	echo "                LD = $LD"
 	echo "           LDFLAGS = $LDFLAGS"
+	echo "              GZIP = $GZIP"
 	echo
 	echo "Headers will be installed in $HEADERS"
 	echo "Libraries will be installed in $LIBRARY"
@@ -122,11 +125,14 @@ for option in $*; do
 		echo "The following options may be used to modify installation behavior."
 		echo "  --includedir=N    Headers directory (default is ${PREFIX}/include)"
 		echo "  --libdir=N        Libraries directory (default is ${PREFIX}/lib)"
+		echo "  --mandir=N        Manual pages directory (default is ${PREFIX}/man)"
 		echo "  --prefix=N        Installs library files in N (default is $PREFIX)"
 		echo
 		echo "The following environment variables may be used:"
 		echo "   CC       C compiler command"
 		echo "   CFLAGS   C compiler flags"
+		echo "   LDFLAGS  Linker flags"
+		echo "   GZIP     GZIP compression tool"
 		echo
 		echo "Report bugs to ${MAINTAINER}."
 		exit $EXIT_SUCCESS
@@ -156,6 +162,7 @@ done
 HEADERS=${HEADERS:-"${PREFIX}/include"}
 LIBRARY=${LIBRARY:-"${PREFIX}/lib"}
 MANDIR=${MANDIR:-"${PREFIX}/man"}
+GZIP=${GZIP:-"gzip -c"}
 
 if test "$PROFILE"; then
 	printf "Using user-specified profile....."
@@ -172,6 +179,7 @@ if test "$PROFILE"; then
 
 	echo "success [$PROFILE]"
 	printf "Generating build files..........."
+	generate doc/Makefile.in doc/Makefile
 	generate build/ck.build.in build/ck.build
 	generate build/regressions.build.in build/regressions.build
 	generate build/ck.pc.in build/ck.pc
@@ -305,8 +313,6 @@ assert "$PLATFORM" "$PLATFORM" "unsupported"
 PROFILE="${PROFILE:-$PLATFORM}"
 PLATFORM="__${PLATFORM}__"
 
-printf "Finding suitable compiler........"
-
 # `which` on Solaris sucks
 pathsearch()
 {
@@ -323,6 +329,24 @@ pathsearch()
 	IFS="$oldFS"
 }
 
+printf "Finding gzip tool................"
+GZIP=`pathsearch "${GZIP:-gzip}"`
+if test -z "$GZIP" -o ! -x "$GZIP"; then
+	GZIP=`pathsearch "${GZIP:-gzip}"`
+	GZIP="$GZIP"
+fi
+
+if test -z "$GZIP"; then
+	echo "not found"
+	GZIP=cat
+	GZIP_SUFFIX=""
+else
+	echo "success [$GZIP]"
+	GZIP="$GZIP -c"
+	GZIP_SUFFIX=".gz"
+fi
+
+printf "Finding suitable compiler........"
 CC=`pathsearch "${CC:-cc}"`
 if test -z "$CC" -o ! -x "$CC"; then
 	CC=`pathsearch "${CC:-gcc}"`
@@ -396,6 +420,7 @@ done
 
 printf "Generating build files..........."
 
+generate doc/Makefile.in doc/Makefile
 generate build/ck.build.in build/ck.build
 generate build/regressions.build.in build/regressions.build
 generate build/ck.pc.in build/ck.pc
diff --git a/doc/Makefile b/doc/Makefile
deleted file mode 100644
index e2fc70f..0000000
--- a/doc/Makefile
+++ /dev/null
@@ -1,61 +0,0 @@
-.PHONY: all clean
-
-GZIP=gzip
-OBJECTS=ck_ht_allocator_set.3.gz  \
-	ck_ht_count.3.gz 	  \
-	ck_ht_destroy.3.gz	  \
-	ck_ht_get_spmc.3.gz	  \
-	ck_ht_grow_spmc.3.gz	  \
-	ck_ht_hash.3.gz	  	  \
-	ck_ht_hash_direct.3.gz	  \
-	ck_ht_init.3.gz	  	  \
-	ck_ht_put_spmc.3.gz	  \
-	ck_ht_remove_spmc.3.gz	  \
-	ck_ht_reset_spmc.3.gz	  \
-	ck_ht_set_spmc.3.gz	  \
-	ck_ht_entry_empty.3.gz
-
-all: $(OBJECTS)
-
-ck_ht_allocator_set.3.gz: ck_ht_allocator_set.3
-	$(GZIP) -c ck_ht_allocator_set.3 > ck_ht_allocator_set.3.gz
-
-ck_ht_count.3.gz: ck_ht_count.3
-	$(GZIP) -c ck_ht_count.3 > ck_ht_count.3.gz
-
-ck_ht_destroy.3.gz: ck_ht_destroy.3
-	$(GZIP) -c ck_ht_destroy.3 > ck_ht_destroy.3.gz
-
-ck_ht_get_spmc.3.gz: ck_ht_get_spmc.3
-	$(GZIP) -c ck_ht_get_spmc.3 > ck_ht_get_spmc.3.gz
-
-ck_ht_grow_spmc.3.gz: ck_ht_grow_spmc.3
-	$(GZIP) -c ck_ht_grow_spmc.3 > ck_ht_grow_spmc.3.gz
-
-ck_ht_hash.3.gz: ck_ht_hash.3
-	$(GZIP) -c ck_ht_hash.3 > ck_ht_hash.3.gz
-
-ck_ht_hash_direct.3.gz: ck_ht_hash_direct.3
-	$(GZIP) -c ck_ht_hash_direct.3 > ck_ht_hash_direct.3.gz
-
-ck_ht_init.3.gz: ck_ht_init.3
-	$(GZIP) -c ck_ht_init.3 > ck_ht_init.3.gz
-
-ck_ht_put_spmc.3.gz: ck_ht_put_spmc.3
-	$(GZIP) -c ck_ht_put_spmc.3 > ck_ht_put_spmc.3.gz
-
-ck_ht_remove_spmc.3.gz: ck_ht_remove_spmc.3
-	$(GZIP) -c ck_ht_remove_spmc.3 > ck_ht_remove_spmc.3.gz
-
-ck_ht_reset_spmc.3.gz: ck_ht_reset_spmc.3
-	$(GZIP) -c ck_ht_reset_spmc.3 > ck_ht_reset_spmc.3.gz
-
-ck_ht_set_spmc.3.gz: ck_ht_set_spmc.3
-	$(GZIP) -c ck_ht_set_spmc.3 > ck_ht_set_spmc.3.gz
-
-ck_ht_entry_empty.3.gz: ck_ht_entry_empty.3
-	$(GZIP) -c ck_ht_entry_empty.3 > ck_ht_entry_empty.3.gz
-
-clean:
-	rm -f *~ *.o *.3.gz
-
diff --git a/doc/Makefile.in b/doc/Makefile.in
new file mode 100644
index 0000000..5f4fb4f
--- /dev/null
+++ b/doc/Makefile.in
@@ -0,0 +1,62 @@
+.PHONY: all clean
+
+GZIP=@GZIP@
+GZIP_SUFFIX=.3@GZIP_SUFFIX@
+OBJECTS=ck_ht_allocator_set$(GZIP_SUFFIX) \
+	ck_ht_count$(GZIP_SUFFIX) 	  \
+	ck_ht_destroy$(GZIP_SUFFIX)	  \
+	ck_ht_get_spmc$(GZIP_SUFFIX)	  \
+	ck_ht_grow_spmc$(GZIP_SUFFIX)	  \
+	ck_ht_hash$(GZIP_SUFFIX)	  \
+	ck_ht_hash_direct$(GZIP_SUFFIX)	  \
+	ck_ht_init$(GZIP_SUFFIX)	  \
+	ck_ht_put_spmc$(GZIP_SUFFIX)	  \
+	ck_ht_remove_spmc$(GZIP_SUFFIX)	  \
+	ck_ht_reset_spmc$(GZIP_SUFFIX)	  \
+	ck_ht_set_spmc$(GZIP_SUFFIX)	  \
+	ck_ht_entry_empty$(GZIP_SUFFIX)
+
+all: $(OBJECTS)
+
+ck_ht_allocator_set$(GZIP_SUFFIX): ck_ht_allocator_set
+	$(GZIP) ck_ht_allocator_set > ck_ht_allocator_set$(GZIP_SUFFIX)
+
+ck_ht_count$(GZIP_SUFFIX): ck_ht_count
+	$(GZIP) ck_ht_count > ck_ht_count$(GZIP_SUFFIX)
+
+ck_ht_destroy$(GZIP_SUFFIX): ck_ht_destroy
+	$(GZIP) ck_ht_destroy > ck_ht_destroy$(GZIP_SUFFIX)
+
+ck_ht_get_spmc$(GZIP_SUFFIX): ck_ht_get_spmc
+	$(GZIP) ck_ht_get_spmc > ck_ht_get_spmc$(GZIP_SUFFIX)
+
+ck_ht_grow_spmc$(GZIP_SUFFIX): ck_ht_grow_spmc
+	$(GZIP) ck_ht_grow_spmc > ck_ht_grow_spmc$(GZIP_SUFFIX)
+
+ck_ht_hash$(GZIP_SUFFIX): ck_ht_hash
+	$(GZIP) ck_ht_hash > ck_ht_hash$(GZIP_SUFFIX)
+
+ck_ht_hash_direct$(GZIP_SUFFIX): ck_ht_hash_direct
+	$(GZIP) ck_ht_hash_direct > ck_ht_hash_direct$(GZIP_SUFFIX)
+
+ck_ht_init$(GZIP_SUFFIX): ck_ht_init
+	$(GZIP) ck_ht_init > ck_ht_init$(GZIP_SUFFIX)
+
+ck_ht_put_spmc$(GZIP_SUFFIX): ck_ht_put_spmc
+	$(GZIP) ck_ht_put_spmc > ck_ht_put_spmc$(GZIP_SUFFIX)
+
+ck_ht_remove_spmc$(GZIP_SUFFIX): ck_ht_remove_spmc
+	$(GZIP) ck_ht_remove_spmc > ck_ht_remove_spmc$(GZIP_SUFFIX)
+
+ck_ht_reset_spmc$(GZIP_SUFFIX): ck_ht_reset_spmc
+	$(GZIP) ck_ht_reset_spmc > ck_ht_reset_spmc$(GZIP_SUFFIX)
+
+ck_ht_set_spmc$(GZIP_SUFFIX): ck_ht_set_spmc
+	$(GZIP) ck_ht_set_spmc > ck_ht_set_spmc$(GZIP_SUFFIX)
+
+ck_ht_entry_empty$(GZIP_SUFFIX): ck_ht_entry_empty
+	$(GZIP) ck_ht_entry_empty > ck_ht_entry_empty$(GZIP_SUFFIX)
+
+clean:
+	rm -f *~ *.o *.3.gz
+
diff --git a/doc/ck_ht_allocator_set.3 b/doc/ck_ht_allocator_set
similarity index 100%
rename from doc/ck_ht_allocator_set.3
rename to doc/ck_ht_allocator_set
diff --git a/doc/ck_ht_count.3 b/doc/ck_ht_count
similarity index 100%
rename from doc/ck_ht_count.3
rename to doc/ck_ht_count
diff --git a/doc/ck_ht_destroy.3 b/doc/ck_ht_destroy
similarity index 100%
rename from doc/ck_ht_destroy.3
rename to doc/ck_ht_destroy
diff --git a/doc/ck_ht_entry_empty.3 b/doc/ck_ht_entry_empty
similarity index 100%
rename from doc/ck_ht_entry_empty.3
rename to doc/ck_ht_entry_empty
diff --git a/doc/ck_ht_get_spmc.3 b/doc/ck_ht_get_spmc
similarity index 100%
rename from doc/ck_ht_get_spmc.3
rename to doc/ck_ht_get_spmc
diff --git a/doc/ck_ht_grow_spmc.3 b/doc/ck_ht_grow_spmc
similarity index 100%
rename from doc/ck_ht_grow_spmc.3
rename to doc/ck_ht_grow_spmc
diff --git a/doc/ck_ht_hash.3 b/doc/ck_ht_hash
similarity index 100%
rename from doc/ck_ht_hash.3
rename to doc/ck_ht_hash
diff --git a/doc/ck_ht_hash_direct.3 b/doc/ck_ht_hash_direct
similarity index 100%
rename from doc/ck_ht_hash_direct.3
rename to doc/ck_ht_hash_direct
diff --git a/doc/ck_ht_init.3 b/doc/ck_ht_init
similarity index 100%
rename from doc/ck_ht_init.3
rename to doc/ck_ht_init
diff --git a/doc/ck_ht_put_spmc.3 b/doc/ck_ht_put_spmc
similarity index 100%
rename from doc/ck_ht_put_spmc.3
rename to doc/ck_ht_put_spmc
diff --git a/doc/ck_ht_remove_spmc.3 b/doc/ck_ht_remove_spmc
similarity index 100%
rename from doc/ck_ht_remove_spmc.3
rename to doc/ck_ht_remove_spmc
diff --git a/doc/ck_ht_reset_spmc.3 b/doc/ck_ht_reset_spmc
similarity index 100%
rename from doc/ck_ht_reset_spmc.3
rename to doc/ck_ht_reset_spmc
diff --git a/doc/ck_ht_set_spmc.3 b/doc/ck_ht_set_spmc
similarity index 100%
rename from doc/ck_ht_set_spmc.3
rename to doc/ck_ht_set_spmc