问一个C和 C++混合调用时的automake问题

corydon

我在一个C++程序调用portaudio， automake时经常出现如下错误：(autoconf没有问题）
portaudio/Makefile.am: C objects in subdir but `AM_PROG_CC_C_O' not in `configure.ac'

我的configure.ac:

#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ(2.59)
AC_INIT(hello, 0.2, BUG-REPORT-ADDRESS)
AC_CONFIG_SRCDIR(hello.cpp)
AM_INIT_AUTOMAKE(subdir-objects)

AC_PROG_LIBTOOL

AC_CONFIG_HEADER(config.h)

# Checks for programs.
AC_PROG_CXX

AC_PROG_CC

# Checks for libraries.

# Checks for header files.

# Checks for typedefs, structures, and compiler characteristics.

# Checks for library functions.

# check for portaudio
LP_SETUP_PORTAUDIO

#AC_CONFIG_FILES([Makefile])
AC_OUTPUT(Makefile src/Makefile  src/hello portaudio/Makefile \
        m4/Makefile )