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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"
elif eval "test x`echo '$'$var` = xyes"; then
AC_MSG_ERROR([$feature: $msg])
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], [
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], [$5])
])
dnl Check with pkg-config first, fall back to AC_CHECK_LIB.
dnl
dnl Parameters: varname1, varname2, pkgname, libname, symname, libs, cflags, description, errmsg
AC_DEFUN([MPD_AUTO_PKG_LIB], [
if eval "test x`echo '$'enable_$1` != xno"; then
PKG_CHECK_MODULES([$2], [$3],
[eval "found_$1=yes"],
AC_CHECK_LIB($4, $5,
[eval "found_$1=yes $2_LIBS='$6' $2_CFLAGS='$7'"],
[eval "found_$1=no"],
[$6]))
fi
MPD_AUTO_RESULT([$1], [$8], [$9])
])
dnl Wrapper for AC_CHECK_LIB.
dnl
dnl Parameters: varname1, varname2, libname, symname, libs, cflags, description, errmsg
AC_DEFUN([MPD_AUTO_LIB], [
AC_SUBST([$2_LIBS], [])
AC_SUBST([$2_CFLAGS], [])
if eval "test x`echo '$'enable_$1` != xno"; then
AC_CHECK_LIB($3, $4,
[eval "found_$1=yes $2_LIBS='$5' $2_CFLAGS='$6'"],
[eval "found_$1=no"],
[$5])
fi
MPD_AUTO_RESULT([$1], [$7], [$8])
])
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