GD/JPEG support in PHP4

Hi, I was looking at the JPEG support in PHP4 (CVS), and I noticed the following code in config.m4: old_LIBS=$LIBS LIBS="$LIBS -L$withval/lib" AC_CHECK_LIB(jpeg,jpeg_read_header, [LIBS="$LIBS -L$withval/lib -ljpeg"],[AC_MSG_RESULT(no)],) LIBS=$old_LIBS AC_ADD_LIBRARY_WITH_PATH(jpeg, $withval/lib) LIBS="$LIBS -L$withval/lib -ljpeg" Is it me, or is this code a little odd? Another thing: It only checks for JPEG support happen in the case that $withval=yes. When a path is supplied, AC_DEFINE(HAVE_GD_JPG, 1, [ ]) can never happen... Isn't it time to clean this code up? When there are reasons to leave the code as it is, please tell me. Otherwise I'll try to write a cleaned-up version. Sander.