Index: unix/Makefile
===================================================================
--- unix/Makefile.orig	2010-05-10 17:45:59.892090727 +0200
+++ unix/Makefile	2010-05-10 17:46:18.636090912 +0200
@@ -773,7 +773,7 @@ isi:		unix_make
 linux:		unix_make
 	@echo 'NOTE:  use linux_noasm target for non-Intel Linux compiles.'
 	$(MAKE) unzips CC=gcc LD=gcc AS=gcc\
-	 CF="-O3 -Wall -I. -DASM_CRC $(LOC)"\
+	 CF="$(RPM_OPT_FLAGS) -I. -DASM_CRC $(LOC)"\
 	 AF="-Di386 $(AF)" CRC32=crc_gcc
 # GRR:  this echo is pointless; if user gets this far, no difference to install
 #	@echo 'Be sure to use the install_asm target rather than the install target'
@@ -783,7 +783,7 @@ linux_asm:	linux
 # Linux (Posix, approximately SysV):  virtually any version since before 0.96,
 # for any platform.  Change "-O" to "-O3" or whatever, as desired...
 linux_noasm:	unix_make
-	$(MAKE) unzips CC=gcc LD=gcc CF="-O -Wall -I. $(LOC)"
+	$(MAKE) unzips CC=gcc LD=gcc CF="$(RPM_OPT_FLAGS) -I. $(LOC)"
 
 # Linux with lcc compiler:  __inline__ (stat.h) not recognized, and must edit
 # /usr/include/gnu/types.h to get rid of "long long" if __LCC__ defined.  -O3