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4d0b984b TT |
1 | m4_include(../../config/acx.m4) |
2 | m4_include(../../config/override.m4) | |
3 | m4_include(../transform.m4) | |
6bc80edc TT |
4 | |
5 | # AM_CONDITIONAL -*- Autoconf -*- | |
6 | ||
7 | # Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005 | |
8 | # Free Software Foundation, Inc. | |
9 | # | |
10 | # This file is free software; the Free Software Foundation | |
11 | # gives unlimited permission to copy and/or distribute it, | |
12 | # with or without modifications, as long as this notice is preserved. | |
13 | ||
14 | # serial 7 | |
15 | ||
16 | # AM_CONDITIONAL(NAME, SHELL-CONDITION) | |
17 | # ------------------------------------- | |
18 | # Define a conditional. | |
19 | AC_DEFUN([AM_CONDITIONAL], | |
20 | [AC_PREREQ(2.52)dnl | |
21 | ifelse([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])], | |
22 | [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl | |
23 | AC_SUBST([$1_TRUE]) | |
24 | AC_SUBST([$1_FALSE]) | |
25 | if $2; then | |
26 | $1_TRUE= | |
27 | $1_FALSE='#' | |
28 | else | |
29 | $1_TRUE='#' | |
30 | $1_FALSE= | |
31 | fi | |
32 | AC_CONFIG_COMMANDS_PRE( | |
33 | [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then | |
34 | AC_MSG_ERROR([[conditional "$1" was never defined. | |
35 | Usually this means the macro was only invoked conditionally.]]) | |
36 | fi])]) |