我用 librtmp 构建了 ffmpeg。我的 librtmp 位于 /opt/librtmp/lib。当我执行ffmpeg时,它说:
./ffmpeg: error while loading shared libraries: librtmp.so.0: cannot open shared object file: No such file or directory
我使用 ldd 命令显示未找到:
[qty@testing bin]# ldd ffmpeg
linux-vdso.so.1 => (0x00007fff15576000)
librtmp.so.0 => not found
libz.so.1 => /lib64/libz.so.1 (0x00002b9a71e10000)
libm.so.6 => /lib64/libm.so.6 (0x00002b9a72025000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00002b9a722a8000)
libc.so.6 => /lib64/libc.so.6 (0x00002b9a724c3000)
/lib64/ld-linux-x86-64.so.2 (0x00002b9a71bf2000)
我知道我是这样的:
[qty@testing bin]# ls -alh /opt/librtmp/lib/
total 300K
drwxr-xr-x 3 root root 4.0K Sep 25 17:10 .
drwxr-xr-x 7 root root 4.0K Sep 25 17:10 ..
-rw-r--r-- 1 root root 158K Sep 25 17:10 librtmp.a
lrwxrwxrwx 1 root root 12 Sep 25 17:10 librtmp.so -> librtmp.so.0
-rwxr-xr-x 1 root root 118K Sep 25 17:10 librtmp.so.0
drwxr-xr-x 2 root root 4.0K Sep 25 17:10 pkgconfig
我找到了几种解决问题的方法
- 修改/etc/ld.so.conf,但需要超级用户
- 设置 LD_LIBRARY_PATH 变量,但对用户不方便
- 像这样将 rpath 传递给 gcc
为我的 ffmpeg 配置参数
PKG_CONFIG_PATH="/opt/librtmp/lib/pkgconfig" ./configure --disable-doc \
--disable-ffserver --disable-avdevice \
--disable-postproc --disable-avfilter --disable-bsfs \
--disable-filters \
--disable-asm \
--disable-bzlib \
--enable-librtmp \
--prefix=/opt/ffmpeg \
--extra-ldflags="-Wl,-rpath,/opt/librtmp/lib"
假设没有源代码要重新编译?如何将共享库搜索路径添加到可执行文件?