Hi
Trying to build a gstreamer application as a library, e.g., a call to a
function within the library would create the loop, pipeline, bus, etc. I
am generating the .so as follows:
gcc -shared -Wl,-soname,$@ `pkg-config --cflags --libs gstreamer-1.0`
-D_GNU_SOURCE -I . -g -O2 -Wall -fPIC libtst.c -o libtst.so'
where libtst.c looks like:
#include <glib.h>
#include <glib/gprintf.h>
#include <gst/gst.h>
#include <arpa/inet.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <gst/check/gstcheck.h>
#include <sys/syscall.h>
void create(int argc,char* argv[]){
GstElement *pipeline;
GstBus *bus;
GMainLoop *loop;
guint bus_watch_id;
GError *err = NULL;
gst_init(&argc, &argv);
pipeline = gst_parse_launch (argv, &err);
if (!pipeline) {
g_print ("Parse error: %s\n", err->message);
exit (1);
}
loop = g_main_loop_new (NULL, FALSE);
bus = gst_element_get_bus (pipeline);
...
}
The test program looks like:
#include "libtst.h"
void main(int argc,char* argv[) {
create(argc,argv);
}
And is built as:
gcc test.c -L. -ltst -I. -o test -Wl,--allow-shlib-undefined `pkg-config
--cflags gstreamer-1.0`
After setting LD_LIBRARY_PATH to point gstreamer.so, glib.so, ... on the
target machine, I see the following:
*** ./test: symbol lookup error: /root/libtst.so: undefined symbol: gst_init
Aborted
Doing ldd on the library file does not show any of gst, or glib related
libraries, e.g:
ldd libtst.so
linux-vdso.so.1 (0x00007ffea7559000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f33b220e000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f33b1e62000)
/lib64/ld-linux-x86-64.so.2 (0x000055d77ec76000)
I am not creating this .so correctly, Any thoughts, as how to go about it?
Cheers,
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