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configure.ac: added function MPD_AUTO_PRE

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This function checks whether a prerequisite for a feature was found.
This commit is contained in:
Max Kellermann 2009-04-15 22:23:46 +02:00
parent a6ed888f9f
commit d23a23db10
1 changed files with 15 additions and 0 deletions

15
m4/mpd_auto.m4

@ -21,6 +21,21 @@ AC_DEFUN([MPD_AUTO_DISABLED], [
fi fi
]) ])
dnl Check whether a prerequisite for a feature was found. This is
dnl very similar to MPD_AUTO_RESULT, but does not finalize the
dnl detection; it assumes that more checks will follow.
AC_DEFUN([MPD_AUTO_PRE], [
name="$1"
var="enable_$1"
found="found_$name"
feature="$2"
msg="$3"
if eval "test x`echo '$'$var` != xno" && eval "test x`echo '$'$found` = xno"; then
MPD_AUTO_DISABLED([$name], [$feature], [$msg])
fi
])
AC_DEFUN([MPD_AUTO_RESULT], [ AC_DEFUN([MPD_AUTO_RESULT], [
name="$1" name="$1"
var="enable_$1" var="enable_$1"