fix cross-compiling issues

package/zip/patches/patch-unix_Makefile

@@ -0,0 +1,33 @@
+--- zip30.orig/unix/Makefile	2008-05-07 08:33:56.000000000 +0200
++++ zip30/unix/Makefile	2011-10-19 22:21:08.000000000 +0200
+@@ -22,7 +22,7 @@ SHELL = /bin/sh
+ LN = ln -s
+ 
+ # (to use the GNU compiler, change cc to gcc in CC)
+-CC = cc
++CC ?= cc
+ BIND = $(CC)
+ AS = $(CC) -c
+ CPP = /lib/cpp
+@@ -58,7 +58,7 @@ IZ_OUR_BZIP2_DIR = bzip2
+ #   LFLAGS1   flags after output file spec, before obj file list
+ #   LFLAGS2   flags after obj file list (libraries, etc)
+ CFLAGS_NOOPT = -I. -DUNIX $(LOCAL_ZIP)
+-CFLAGS = -O2 $(CFLAGS_NOOPT)
++CFLAGS ?= -O2 $(CFLAGS_NOOPT)
+ LFLAGS1 =
+ LFLAGS2 = -s
+ 
+@@ -199,10 +199,10 @@ flags:  unix/configure
+ #               Generic targets:
+ 
+ generic: flags
+-	eval $(MAKE) $(MAKEF) zips `cat flags`
++	eval $(MAKE) $(MAKEF) zips `cat flags` CC=$(CC)
+ 
+ generic_gcc:
+-	$(MAKE) $(MAKEF) generic CC=gcc CPP="gcc -E"
++	$(MAKE) $(MAKEF) generic CPP="gcc -E" CC=$(CC)
+ 
+ # AT&T 6300 PLUS (don't know yet how to allocate 64K bytes):
+ att6300nodir:

package/zip/patches/patch-unix_Makefile.orig

@@ -0,0 +1,29 @@
+--- zip30.orig/unix/Makefile	2008-05-07 08:33:56.000000000 +0200
++++ zip30/unix/Makefile	2011-10-19 22:20:07.000000000 +0200
+@@ -22,7 +22,7 @@ SHELL = /bin/sh
+ LN = ln -s
+ 
+ # (to use the GNU compiler, change cc to gcc in CC)
+-CC = cc
++CC ?= cc
+ BIND = $(CC)
+ AS = $(CC) -c
+ CPP = /lib/cpp
+@@ -58,7 +58,7 @@ IZ_OUR_BZIP2_DIR = bzip2
+ #   LFLAGS1   flags after output file spec, before obj file list
+ #   LFLAGS2   flags after obj file list (libraries, etc)
+ CFLAGS_NOOPT = -I. -DUNIX $(LOCAL_ZIP)
+-CFLAGS = -O2 $(CFLAGS_NOOPT)
++CFLAGS ?= -O2 $(CFLAGS_NOOPT)
+ LFLAGS1 =
+ LFLAGS2 = -s
+ 
+@@ -202,7 +202,7 @@ generic: flags
+ 	eval $(MAKE) $(MAKEF) zips `cat flags`
+ 
+ generic_gcc:
+-	$(MAKE) $(MAKEF) generic CC=gcc CPP="gcc -E"
++	$(MAKE) $(MAKEF) generic CPP="gcc -E" CC=$(CC)
+ 
+ # AT&T 6300 PLUS (don't know yet how to allocate 64K bytes):
+ att6300nodir: