--- zlib-1.2.3/configure
+++ zlib-1.2.3/configure
@@ -23,7 +23,7 @@
 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
 VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
 VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
-AR=${AR-"ar rc"}
+AR=${AR-"ar"}
 RANLIB=${RANLIB-"ranlib"}
 prefix=${prefix-/usr/local}
 exec_prefix=${exec_prefix-'${prefix}'}
--- zlib-1.2.3/Makefile.in
+++ zlib-1.2.3/Makefile.in
@@ -70,7 +70,7 @@
 	fi
 
 libz.a: $(OBJS) $(OBJA)
-	$(AR) $@ $(OBJS) $(OBJA)
+	$(AR) rc $@ $(OBJS) $(OBJA)
 	-@ ($(RANLIB) $@ || true) >/dev/null 2>&1
 
 match.o: match.S
--- zlib-1.2.3/win32/Makefile.gcc
+++ zlib-1.2.3/win32/Makefile.gcc
@@ -30,21 +30,23 @@
 #LOC = -DASMV
 #LOC = -DDEBUG -g
 
-CC = gcc
-CFLAGS = $(LOC) -O3 -Wall
+CC ?= gcc
+CFLAGS ?= $(LOC) -O3 -Wall
 
-AS = $(CC)
-ASFLAGS = $(LOC) -Wall
+AS ?= $(CC)
+ASFLAGS ?= $(LOC) -Wall
 
 LD = $(CC)
-LDFLAGS = $(LOC) -s
+LDFLAGS ?= $(LOC) -s
 
-AR = ar
+AR ?= ar
 ARFLAGS = rcs
 
-RC = windres
+RC ?= windres
 RCFLAGS = --define GCC_WINDRES
 
+DLLWRAP ?= dllwrap
+
 CP = cp -fp
 # If GNU install is available, replace $(CP) with install.
 INSTALL = $(CP)
@@ -79,9 +81,8 @@
 $(IMPLIB): $(SHAREDLIB)
 
 $(SHAREDLIB): win32/zlib.def $(OBJS) $(OBJA) zlibrc.o
-	dllwrap --driver-name $(CC) --def win32/zlib.def \
+	$(DLLWRAP) --driver-name $(CC) --def win32/zlib.def \
 	  --implib $(IMPLIB) -o $@ $(OBJS) $(OBJA) zlibrc.o
-	strip $@
 
 example: example.o $(STATICLIB)
 	$(LD) $(LDFLAGS) -o $@ example.o $(STATICLIB)