我想运行位于桌面的C代码,其中头文件位于其他位置。什么应该是适当的GCC命令用于编译和执行?我已附上以下代码。我在这方面要求善意的考虑和帮助。
#include <config.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include </usr/include/pulse/simple.h>
#include </usr/include/pulse/error.h>
#define BUFSIZE 32
int main(int argc, char*argv[]) {
/* The Sample format to use */
static const pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 2
};
pa_simple *s_in, *s_out = NULL;
int ret = 1;
int error;
/* Create a new playback stream */
if (!(s_out = pa_simple_new(NULL, argv[0], PA_STREAM_PLAYBACK, NULL, "playback", &ss, NULL, NULL, &error))) {
fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
goto finish;
}
if (!(s_in = pa_simple_new(NULL, argv[0], PA_STREAM_RECORD, NULL, "record", &ss, NULL, NULL, &error))) {
fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
goto finish;
}
for (;;) {
uint8_t buf[BUFSIZE];
ssize_t r;
#if 1
pa_usec_t latency;
if ((latency = pa_simple_get_latency(s_in, &error)) == (pa_usec_t) -1) {
fprintf(stderr, __FILE__": pa_simple_get_latency() failed: %s\n", pa_strerror(error));
goto finish;
}
fprintf(stderr, "In: %0.0f usec \r\n", (float)latency);
if ((latency = pa_simple_get_latency(s_out, &error)) == (pa_usec_t) -1) {
fprintf(stderr, __FILE__": pa_simple_get_latency() failed: %s\n", pa_strerror(error));
goto finish;
}
fprintf(stderr, "Out: %0.0f usec \r\n", (float)latency);
#endif
if (pa_simple_read(s_in, buf, sizeof(buf), &error) < 0) {
fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
goto finish;
}
/* ... and play it */
if (pa_simple_write(s_out, buf, sizeof(buf), &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n", pa_strerror(error));
goto finish;
}
}
/* Make sure that every single sample was played */
if (pa_simple_drain(s_out, &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n", pa_strerror(error));
goto finish;
}
ret = 0;
finish:
if (s_in)
pa_simple_free(s_in);
if (s_out)
pa_simple_free(s_out);
return ret;
}
答案 0 :(得分:1)
看起来你只需要替换它:
#include </usr/include/pulse/simple.h>
#include </usr/include/pulse/error.h>
用这个:
#include "simple.h"
#include "error.h"
并且您的命令行必须是这样的:
gcc -I"/usr/include/pulse" program.c -lpulse
您需要将'program.c'替换为源文件的名称。
或者甚至只用接下来的两行替换这两行:
#include <pulse/simple.h>
#include <pulse/error.h>
(目录/ usr / include看起来像标准包含路径) 在这种情况下,您的命令行将只是:
gcc program.c -lpulse
答案 1 :(得分:1)
C编译器通过以下方式包含头文件(通过#include
):
#include "somename.h"
:它开始在somefile.h的源目录中进行搜索,如果在那里找不到,它开始看起来像(2)#include <somename.h>
:它搜索一系列(系统相关的)目录。在类Unix系统(Linux,MacOS)中,这基本上是/usr/include
,但可能会添加其他目录。您可以通过-I/some/path flags
在大多数编译器中对此进行控制,在序列的开头添加/some/path
(2)。另请注意,上面的somename.h
可以包含/
,因此如果您编写
#include "this/file.h"
然后它在当前目录的file.h
目录中查找this
。
答案 2 :(得分:0)
尝试gcc -c -I/path/to/source/files fileName.c
。查看http://www.network-theory.co.uk/docs/gccintro/gccintro_22.html