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| author | Mathieu Lirzin <mthl@gnu.org> | 2017-09-20 00:08:59 +0200 |
|---|---|---|
| committer | Mathieu Lirzin <mthl@gnu.org> | 2017-09-20 00:08:59 +0200 |
| commit | 7508174f4a6c19eeda89a7e18b8d1398fe85ccf0 (patch) | |
| tree | 2938ba28267cfc6d6cba0b763f80e4b32ce49b03 /m4/cond.m4 | |
| parent | c2757b974cb4c182333859edb45a01194550bc0e (diff) | |
| parent | ced195a8556b68eab3dd0887e07a97c6ae4917bf (diff) | |
| download | automake-7508174f4a6c19eeda89a7e18b8d1398fe85ccf0.tar.gz | |
Merge branch 'minor'
Diffstat (limited to 'm4/cond.m4')
| -rw-r--r-- | m4/cond.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/m4/cond.m4 b/m4/cond.m4 new file mode 100644 index 000000000..2a889d466 --- /dev/null +++ b/m4/cond.m4 @@ -0,0 +1,32 @@ +# AM_CONDITIONAL -*- Autoconf -*- + +# Copyright (C) 1997-2017 Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# AM_CONDITIONAL(NAME, SHELL-CONDITION) +# ------------------------------------- +# Define a conditional. +AC_DEFUN([AM_CONDITIONAL], +[AC_PREREQ([2.52])dnl + m4_if([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])], + [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl +AC_SUBST([$1_TRUE])dnl +AC_SUBST([$1_FALSE])dnl +_AM_SUBST_NOTMAKE([$1_TRUE])dnl +_AM_SUBST_NOTMAKE([$1_FALSE])dnl +m4_define([_AM_COND_VALUE_$1], [$2])dnl +if $2; then + $1_TRUE= + $1_FALSE='#' +else + $1_TRUE='#' + $1_FALSE= +fi +AC_CONFIG_COMMANDS_PRE( +[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then + AC_MSG_ERROR([[conditional "$1" was never defined. +Usually this means the macro was only invoked conditionally.]]) +fi])]) |