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e567459 @nniclausse - update makefile/configure scripts for tsung-plotter (TSUN-89)
nniclausse authored
1 dnl as-ac-expand.m4 0.2.0 -*- autoconf -*-
2 dnl autostars m4 macro for expanding directories using configure's prefix
3
4 dnl (C) 2003, 2004, 2005 Thomas Vander Stichele <thomas at apestaart dot org>
5
6 dnl Copying and distribution of this file, with or without modification,
7 dnl are permitted in any medium without royalty provided the copyright
8 dnl notice and this notice are preserved.
9
10 dnl AS_AC_EXPAND(VAR, CONFIGURE_VAR)
11
12 dnl example:
13 dnl AS_AC_EXPAND(SYSCONFDIR, $sysconfdir)
14 dnl will set SYSCONFDIR to /usr/local/etc if prefix=/usr/local
15
16 AC_DEFUN([AS_AC_EXPAND],
17 [
18 EXP_VAR=[$1]
19 FROM_VAR=[$2]
20
21 dnl first expand prefix and exec_prefix if necessary
22 prefix_save=$prefix
23 exec_prefix_save=$exec_prefix
24
25 dnl if no prefix given, then use /usr/local, the default prefix
26 if test "x$prefix" = "xNONE"; then
27 prefix="$ac_default_prefix"
28 fi
29 dnl if no exec_prefix given, then use prefix
30 if test "x$exec_prefix" = "xNONE"; then
31 exec_prefix=$prefix
32 fi
33
34 full_var="$FROM_VAR"
35 dnl loop until it doesn't change anymore
36 while true; do
37 new_full_var="`eval echo $full_var`"
38 if test "x$new_full_var" = "x$full_var"; then break; fi
39 full_var=$new_full_var
40 done
41
42 dnl clean up
43 full_var=$new_full_var
44 AC_SUBST([$1], "$full_var")
45
46 dnl restore prefix and exec_prefix
47 prefix=$prefix_save
48 exec_prefix=$exec_prefix_save
49 ])
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