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Let makefile find libz and zlib.h by CFLAGS and LDFLAGS.

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Upstream-Status: Pending
---
diff --git a/configure.ac b/configure.ac
index d1acc36..6f865b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -62,7 +62,7 @@ AC_CHECK_PROG([RPM],   rpm,   rpm,   [], [$PATH])
 AC_CHECK_PROG([SED],   sed,   sed,   [], [$PATH])
 AC_CHECK_PROG([FIND],  find,  find,  [], [$PATH])
 
-AC_CHECK_HEADER(zlib.h, AC_CHECK_LIB(z, inflateInit_, [AC_DEFINE(HAVE_ZLIB_H, 1) LIBS="$LIBS -lz"]))
+AC_CHECK_HEADER(zlib.h, AC_CHECK_LIB(z, inflateInit_, [AC_DEFINE(HAVE_ZLIB_H, 1) LIBS="$LIBS $LDFLAGS -lz"]))
 
 dnl Find the default programs
 if test "with_default" != no ; then
@@ -175,7 +175,7 @@ fi
 
 dnl ---Output variables...
 
-HOST_CFLAGS="$HOST_CFLAGS -O2 -Wall \$(HOST_CPPFLAGS)"
+HOST_CFLAGS="$HOST_CFLAGS -O2 -Wall \$(HOST_CPPFLAGS) $CFLAGS"
 
 dnl TODO: figure out how to set these appropriately for compilers other than gcc
 I386_CFLAGS="$I386_CFLAGS -Os -ffreestanding -Wall -W -Wno-format \$(I386_CPPFLAGS)"
-- 
1.7.10.4