##### http://autoconf-archive.cryp.to/ac_define_dir.html # # SYNOPSIS # # AC_DEFINE_DIR(VARNAME, DIR [, DESCRIPTION]) # # DESCRIPTION # # This macro sets VARNAME to the expansion of the DIR variable, # taking care of fixing up ${prefix} and such. # # VARNAME is then offered as both an output variable and a C # preprocessor symbol. # # Example: # # AC_DEFINE_DIR([DATADIR], [datadir], [Where data are placed to.]) # # LAST MODIFICATION # # 2006-10-13 # # COPYLEFT # # Copyright (c) 2006 Stepan Kasal <kasal@ucw.cz> # Copyright (c) 2006 Andreas Schwab <schwab@suse.de> # Copyright (c) 2006 Guido U. Draheim <guidod@gmx.de> # Copyright (c) 2006 Alexandre Oliva # # Copying and distribution of this file, with or without # modification, are permitted in any medium without royalty provided # the copyright notice and this notice are preserved. AC_DEFUN([AC_DEFINE_DIR], [ prefix_NONE= exec_prefix_NONE= test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix dnl In Autoconf 2.60, ${datadir} refers to ${datarootdir}, which in turn dnl refers to ${prefix}. Thus we have to use `eval' twice. eval ac_define_dir="\"[$]$2\"" eval ac_define_dir="\"$ac_define_dir\"" AC_SUBST($1, "$ac_define_dir") AC_DEFINE_UNQUOTED($1, "$ac_define_dir", [$3]) test "$prefix_NONE" && prefix=NONE test "$exec_prefix_NONE" && exec_prefix=NONE ])