mpd/m4/mpd_auto.m4
Max Kellermann 87e0b1adc4 configure.ac: added M4 function MPD_AUTO_PKG() for ALSA
MPD_AUTO_PKG() runs pkg-config and then forwards control to
MPD_AUTO_RESULT().  This is a commonly used short cut.
2009-03-28 21:48:07 +01:00

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AC_DEFUN([MPD_AUTO_ENABLED], [
var="enable_$1"
feature="$2"
if eval "test x`echo '$'$var` = xauto"; then
AC_MSG_NOTICE([auto-detected $feature])
eval "$var=yes"
fi
])
AC_DEFUN([MPD_AUTO_DISABLED], [
var="enable_$1"
feature="$2"
msg="$3"
if eval "test x`echo '$'$var` = xauto"; then
AC_MSG_WARN([$msg -- disabling $feature])
eval "$var=no"
else
AC_MSG_ERROR([$msg])
fi
])
AC_DEFUN([MPD_AUTO_RESULT], [
name="$1"
var="enable_$1"
found="found_$name"
feature="$2"
msg="$3"
if eval "test x`echo '$'$var` = xno"; then
eval "$found=no"
fi
if eval "test x`echo '$'$found` = xyes"; then
MPD_AUTO_ENABLED([$name], [$feature])
else
MPD_AUTO_DISABLED([$name], [$feature], [$msg])
fi
])
AC_DEFUN([MPD_AUTO_PKG], [
if eval "test x`echo '$'enable_$1` != xno"; then
PKG_CHECK_MODULES([$2], [$3],
[eval "found_$1=yes"],
[eval "found_$1=no"])
fi
MPD_AUTO_RESULT([$1], [$4], [$5])
])