| dnl A function to check if the system's zlib library should be used. The | |
| dnl builtin zlib dnl is used by default unless the user configured with | |
| dnl --with-system-zlib. | |
| AC_DEFUN([AM_ZLIB], | |
| [ | |
| # Use the system's zlib library. | |
| zlibdir="-L\$(top_builddir)/../zlib" | |
| zlibinc="-I\$(top_srcdir)/../zlib" | |
| AC_ARG_WITH(system-zlib, | |
| [AS_HELP_STRING([--with-system-zlib], [use installed libz])], | |
| if test x$with_system_zlib = xyes ; then | |
| zlibdir= | |
| zlibinc= | |
| fi | |
| ) | |
| AC_SUBST(zlibdir) | |
| AC_SUBST(zlibinc) | |
| ]) |