381 

   382 # Export variables for system zlib

   383 # ZLIB_CFLAGS and ZLIB_LIBS tell the compiler how to compile and

   384 # link against zlib

   385 pkgconfig=$(which pkg-config 2>/dev/null)

   386 if [ -x "${pkgconfig}" ] ; then

   387   if [ "${ZLIB_CFLAGS}" = "" ] ; then

   388     ZLIB_CFLAGS=$("${pkgconfig}" --cflags zlib)

   389   fi

   390   if [ "${ZLIB_LIBS}" = "" ] ; then

   391     ZLIB_LIBS=$("${pkgconfig}" --libs zlib)

   392   fi

   393 fi

   394 if [ "${ZLIB_LIBS}" = "" ] ; then

   395     ZLIB_LIBS="-lz"

   396 fi

   397 export ZLIB_CFLAGS

   398 export ZLIB_LIBS

   399