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| -rw-r--r-- | m4/iem_parallelport.m4 | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/m4/iem_parallelport.m4 b/m4/iem_parallelport.m4 new file mode 100644 index 0000000..10c9e44 --- /dev/null +++ b/m4/iem_parallelport.m4 @@ -0,0 +1,39 @@ +dnl Copyright (C) 2005-2006 IOhannes m zmölnig +dnl This file is free software; IOhannes m zmölnig +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([IEM_CHECK_LPT], +[ +dnl check for LPT +AC_ARG_ENABLE(lpt, [ --enable-lpt enable parallelport-support]) + +if test "x" = "x${enable_lpt}" ; then + enable_lpt="${with_lpt}" +fi + +AC_CHECK_HEADERS(linux/ppdev.h, [ have_ppdev=" (with device-support)" ], [ have_ppdev="" ]) + +if test x"$enable_lpt" != "xno" +then + AC_MSG_CHECKING("parallel-port") + if test "x$enable_lpt" = "xyes" + then +# forced + AC_DEFINE([Z_WANT_LPT], [1], [Define if you want parallelport support]) + have_lpt="yes (forced)" + else + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/io.h>]], [[ ioperm(0x3bc, 8, 1); outb(0, 0x3bc); ioperm(0x3bc, 8, 0); ]])], + [have_lpt="yes"], [have_lpt="no"]) + fi +fi + +if test "x$have_lpt" != "xno"; then + AC_DEFINE([Z_WANT_LPT], [1], [Define if you want line printer support]) + AC_MSG_RESULT([$have_lpt$have_ppdev]) +else + AC_MSG_RESULT([no]) +fi +AM_CONDITIONAL([LPT], [test "x${enable_lpt}" == "xyes"]) + +]) dnl IEM_CHECK_LPT |