我正在尝试编写一个小的C / C ++程序，它既可以从NI USB DAQ获取数据，也可以使用PortAudio播放音频。问题是，似乎用于Mac / Linux的NI DAQ库DAQmxBase必须在i386下构建，而我无法为i386构建PortAudio。
我在运行-arch=i386之前尝试将CFLAGS和LDFLAGS设置为./configure --disable-mac-universal && make && make install，但是当我向PortAudio添加调用时，仍然无法构建NI DAQmxBase示例代码：
gcc -I../../includes -g -O2 -arch i386 acAnalogTest.c -framework nidaqmxbase -framework nidaqmxbaselv -o acAnalogTest
Undefined symbols for architecture i386:
"_Pa_Initialize", referenced from:
_main in ccf1t0bz.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status
make: *** [acAnalogTest] Error 1
NI DAQmxBase Makefile如下所示：
nilibs=-framework nidaqmxbase -framework nidaqmxbaselv
includes=-I../../includes
flags= -g -O2 -arch i386
cc=gcc
ao_examples = acAnalogTest acquireNScans
......
all : $(ao_examples)
% : %.c
>---$(cc) $(includes) $(flags) $< $(nilibs) -o $@
clean :
>---rm -f $(ao_examples)
更改DAQmxBase Makefile中的-arch标志不起作用：
gcc -I../../includes -g -O2 -arch x86_64 acAnalogTest.c -framework nidaqmxbase -framework nidaqmxbaselv -o acAnalogTest
In file included from acAnalogTest.c:1:
../../includes/NIDAQmxBase.h:104: warning: division by zero
../../includes/NIDAQmxBase.h:104: error: enumerator value for ‘assert_line_104’ is not an integer constant
../../includes/NIDAQmxBase.h:105: warning: division by zero
../../includes/NIDAQmxBase.h:105: error: enumerator value for ‘assert_line_105’ is not an integer constant
make: *** [acAnalogTest] Error 1
我认为这是因为DAQmxBase是用i386数据类型编写的。上述错误从NIDAQmxBase.h引用的行是：
NIStaticAssert(sizeof(long) == 4, "Error: This platform is unsupported because long is not 4 bytes.");
NIStaticAssert(sizeof(int) == sizeof(long), "Error: This platform is unsupported because int is not the same size as long.");
我可以自己构建一些正常的PortAudio示例，但是我想将PortAudio和DAQmxBase放在同一个程序中并让它们相处。必须有一种方法来构建PortAudio，以便它可以与DAQmxBase一起使用，不是吗？
谢谢！