動態(共享)連結庫自是有諸多優於靜態連結庫的特點：如能共享記憶體空間; 節約整個系統的儲存空間，從而使整個系統速度提高; 當只有某個動態連結庫有更新時--便於維護--只用更新這個庫。

  但在有些情況下，如，伺服器並不是你一個人獨享;伺服器上不止有一個版本的ffmpeg要用; 有一個叢集的伺服器需要你部署和維護，更新。這時能使用靜態連結庫就再好不過啦。

   FFmpeg對第三方庫通常是優先使用動態連結的。可以使用下面介紹的步驟實現這些第三方庫的靜態連結，從而你的ffmpeg只用copy一個程式就可以到處用，也方便了部署和維護。

第三方庫：(3RDLIB_INSTALL_PATH為本機上你想將第三方庫安裝的路徑)

》》》 為FFmpeg-4.0新增libopus靜態庫

1. opus-1.2.1

./configure --prefix=/data/PJT-ffmpeg-4.0/install/ --enable-static --disable-shared

make && make install

Libraries have been installed in:

/data/PJT-ffmpeg-4.0/install/lib

If you ever happen to want to link against installed libraries

in a given directory, LIBDIR, you must either use libtool, and

specify the full pathname of the library, or use the '-LLIBDIR'

flag during linking and do at least one of the following:

- add LIBDIR to the 'LD_LIBRARY_PATH' environment variable

during execution

- add LIBDIR to the 'LD_RUN_PATH' environment variable

during linking

- use the '-Wl,-rpath -Wl,LIBDIR' linker flag

- have your system administrator add LIBDIR to '/etc/ld.so.conf'

See any operating system documentation about shared libraries for

more information, such as the ld(1) and ld.so(8) manual pages.

2. ffmpeg-4.0

$ cd ffmpeg-4.0

$ vim linux_configure.sh

#!/bin/sh

./configure \

--prefix=/data/PJT-ffmpeg-4.0/install/ \

--disable-ffplay \

--enable-debug=3 --extra-cflags=-Wall --extra-cflags=-O0 --enable-pic \

--enable-gpl --enable-nonfree --enable-version3 \

--disable-shared --enable-static \

--enable-pthreads --enable-runtime-cpudetect \

--disable-postproc \

--extra-cflags='-I/data/PJT-ffmpeg-4.0/install/include -DREDIRECT_DEBUG_LOG' \

--extra-ldflags='-L/data/PJT-ffmpeg-4.0/install/lib -gl' \

--enable-libopus --enable-encoder=libopus --enable-decoder=libopus \

--enable-libx264 --enable-encoder=libx264 --disable-opencl \

--enable-avfilter --enable-filter=movie

【儲存並退出】

$ ./linux_configure.sh

ERROR: opus not found using pkg-config

If you think configure made a mistake, make sure you are using the latest

version from Git. If the latest version fails, report the problem to the

[email protected] mailing list or IRC #ffmpeg on irc.freenode.net.

Include the log file "ffbuild/config.log" produced by configure as this will help

solve the problem.

$ pkg-config --list-all

libpostproc libpostproc - FFmpeg postprocessing library

libswscale libswscale - FFmpeg image rescaling library

libavdevice libavdevice - FFmpeg device handling library

libssl OpenSSL - Secure Sockets Layer and cryptography libraries

libavfilter libavfilter - FFmpeg audio/video filtering library

libavutil libavutil - FFmpeg utility library

libswresample libswresample - FFmpeg audio resampling library

opus Opus - Opus IETF audio codec (floating-point build)

com_err com_err - Common error description library

openssl OpenSSL - Secure Sockets Layer and cryptography libraries and tools

libidn Libidn - IETF stringprep, nameprep, punycode, IDNA text processing.

zlib zlib - zlib compression library

fdk-aac Fraunhofer FDK AAC Codec Library - AAC codec library

libcrypto OpenSSL-libcrypto - OpenSSL cryptography library

uuid uuid - Universally unique id library

libsepol libsepol - SELinux policy library

libselinux libselinux - SELinux utility library

shared-mime-info shared-mime-info - Freedesktop common MIME database

libcurl libcurl - Library to transfer files with ftp, http, etc.

libavformat libavformat - FFmpeg container format library

x264 x264 - H.264 (MPEG4 AVC) encoder library

libavcodec libavcodec - FFmpeg codec library

$ export PKG_CONFIG_PATH=/data/PJT-ffmpeg-4.0/install/lib/pkgconfig

$ vim ffbuild/config.log

gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -DPIC -Wall -O0 -I/data/PJT-ffmpeg-4.0/install/include -DREDIRECT_DEBUG_LOG -std=c99 -fomit-frame-pointer -fPIC -pthread -I/data/PJT-ffmpeg-4.0/install/include/opus -L/data/PJT-ffmpeg-4.0/install/lib -c -o /tmp/ffconf.S7eM3X5J/test.o /tmp/ffconf.S7eM3X5J/test.c

gcc -L/data/PJT-ffmpeg-4.0/install/lib -gl -Wl,--as-needed -Wl,-z,noexecstack -I/data/PJT-ffmpeg-4.0/install/include/opus -L/data/PJT-ffmpeg-4.0/install/lib -o /tmp/ffconf.S7eM3X5J/test /tmp/ffconf.S7eM3X5J/test.o -lopus

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(opus_decoder.o): In function `opus_decode_frame':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/src/opus_decoder.c:570: undefined reference to `exp'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(celt_decoder.o): In function `celt_decode_lost':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/celt_decoder.c:669: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/celt_decoder.c:743: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(pitch.o): In function `compute_pitch_gain':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/pitch.c:433: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/pitch.c:433: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(quant_bands.o): In function `amp2Log2':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/quant_bands.c:553: undefined reference to `log'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(quant_bands.o): In function `quant_fine_energy':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/quant_bands.c:379: undefined reference to `floorf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(quant_bands.o): In function `quant_coarse_energy_impl':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/quant_bands.c:202: undefined reference to `floorf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(vq.o): In function `renormalise_vector':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:394: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(vq.o): In function `fast_atan2f':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:406: undefined reference to `floorf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(vq.o): In function `stereo_itheta':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:429: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:428: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(vq.o): In function `fast_atan2f':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:406: undefined reference to `floorf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(vq.o): In function `op_pvq_search_c':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:224: undefined reference to `floorf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(vq.o): In function `exp_rotation':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:86: undefined reference to `cosf'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:87: undefined reference to `cosf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(vq.o): In function `normalise_residual':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:131: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/vq.c:131: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(bands.o): In function `compute_band_energies':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:169: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(bands.o): In function `anti_collapse':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:299: undefined reference to `exp'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:300: undefined reference to `sqrt'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:336: undefined reference to `exp'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(bands.o): In function `denormalise_bands':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:230: undefined reference to `exp'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(bands.o): In function `quant_band':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:1225: undefined reference to `sqrt'

/data/PJT-ffmpeg-4.0/install/lib/libopus.a(bands.o): In function `stereo_merge':

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:458: undefined reference to `sqrtf'

/data/PJT-ffmpeg-4.0/3rdlib-source/opus-1.2.1/celt/bands.c:456: undefined reference to `sqrtf'

collect2: ld returned 1 exit status

ERROR: opus not found using pkg-config

【退出】

$ vim configure

將

enabled libopus && {

enabled libopus_decoder && {

require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create

}

enabled libopus_encoder && {

require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create

}

}

改成：

enabled libopus && {

enabled libopus_decoder && {

require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create -lm

}

enabled libopus_encoder && {

require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create -lm

}

}

【儲存並退出】

$ ./linux_configure.sh && make && make install

3. 測試並驗證

./ffmpeg -i opus_16k1c-old.aac -acodec libopus -b:a 64k -compression_level 10 -y output.opus

ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers

built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-23)

configuration: --prefix=/data/PJT-ffmpeg-4.0/install/ --disable-ffplay --enable-debug=3 --extra-cflags=-Wall --extra-cflags=-O0 --enable-pic --enable-gpl --enable-nonfree --enable-version3 --disable-shared --enable-static --enable-pthreads --enable-runtime-cpudetect --disable-postproc --extra-cflags='-I/data/PJT-ffmpeg-4.0/install/include -DREDIRECT_DEBUG_LOG' --extra-ldflags='-L/data/PJT-ffmpeg-4.0/install/lib -gl' --enable-libopus --enable-encoder=libopus --enable-decoder=libopus --enable-libx264 --enable-encoder=libx264 --disable-opencl --enable-avfilter --enable-filter=movie

libavutil 56. 14.100 / 56. 14.100

libavcodec 58. 18.100 / 58. 18.100

libavformat 58. 12.100 / 58. 12.100

libavdevice 58. 3.100 / 58. 3.100

libavfilter 7. 16.100 / 7. 16.100

libswscale 5. 1.100 / 5. 1.100

libswresample 3. 1.100 / 3. 1.100

[aac @ 0x2e4a580] Estimating duration from bitrate, this may be inaccurate

Input #0, aac, from 'opus_16k1c-old.aac':

Duration: 00:02:56.28, bitrate: 56 kb/s

Stream #0:0: Audio: aac (LC), 16000 Hz, mono, fltp, 56 kb/s

Stream mapping:

Stream #0:0 -> #0:0 (aac (native) -> opus (libopus))

Press [q] to stop, [?] for help

Output #0, opus, to 'output.opus':

Metadata:

encoder : Lavf58.12.100

Stream #0:0: Audio: opus (libopus), 16000 Hz, mono, flt, 64 kb/s

Metadata:

encoder : Lavc58.18.100 libopus

size= 1580kB time=00:02:39.95 bitrate= 80.9kbits/s speed= 142x

video:0kB audio:1567kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.864157%

》》》 libspeex 靜態庫的新增：

tar -zxvf speex-1.2.0.tar.gz

cd speex-1.2.0

./configure --prefix=3RD_LIB_INSTALL_PATH --enable-static --disable-shared

make && make install

需要修復ffmpeg的configure檔案

cd /data/ffmpeg

vim configure

將：

enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex

改成：

#enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex

【儲存並退出】

配置選項新增如下：

#!/bin/sh

./configure \
--prefix=/data/ffmpeg-install/ \
--disable-ffplay --disable-ffserver \
--enable-debug=3 --extra-cflags=-Wall --extra-cflags=-O0 --disable-optimizations --disable-asm --enable-pic \
--enable-gpl --enable-nonfree --enable-version3 \
--disable-shared --enable-static \
--enable-pthreads --enable-runtime-cpudetect \
--enable-zlib --enable-bzlib \
--enable-postproc \
--extra-cflags='-I/data/ffmpeg-3rdlib/install/include -DREDIRECT_DEBUG_LOG' \
--extra-ldflags='-L/data/ffmpeg-3rdlib/install/lib -gl' \
--enable-libx264 --enable-encoder=libx264 --disable-opencl \
--enable-encoder=libfdk_aac  --enable-decoder=libfdk_aac --enable-muxer=adts --enable-libfdk-aac \ 
--enable-libspeex --enable-encoder=libspeex --enable-decoder=libspeex \
--enable-avfilter --enable-filter=movie

》》》》

1. libfaac

#cd  faac-1.28

#./configure --prefix=3RDLIB_INSTALL_PATH --enable-static --disable-shared

#make;make install

2. libmp3lame

#cd lame-3.98.4

#./configure --prefix=3RDLIB_INSTALL_PATH --enable-static --disable-shared

#make; make install

NOTE：

因為它的configure引數並不起作用，所以一定要到3RDLIB_INSTALL_PATH/lib下將libmp3lame的動態庫都刪除。

3. libx264

#cd x264-snapshot-VERSION

#./configure --prefix=3RDLIB_INSTALL_PATH --enable-static

#make; make install

FFmpeg的配置

#cd ffmpeg

#./configure 

--enable-gpl --enable-nonfree --enable-version3 

--disable-shared --enable-static 

--enable-pthreads --enable-runtime-cpudetect 

--enable-zlib --enable-bzlib \

--enable-postproc 

--extra-cflags='-I3RDLIB_INSTALL_PATH/include -DREDIRECT_DEBUG_LOG' 

--extra-ldflags='-L3RDLIB_INSTALL_PATH/lib -gl' 

--enable-libxvid --enable-decoder=libxvid --enable-encoder=libxvid 

--disable-encoder=aac 

--enable-libfaac --enable-encoder=libfaac 

--enable-libmp3lame --enable-encoder=libmp3lame 

--enable-libx264 --enable-encoder=libx264 

--enable-avfilter --enable-filter=movie

#make; 

其實，靜態連結的關鍵就是要保證在你的庫路徑“3RDLIB_INSTALL_PATH”下沒有動態連結庫(.so)，這樣ffmpeg在預設的動態庫找不到的情況下就會連結靜態庫。

最新的ffmpeg v0.11編譯與連結

1. libfaac

1. $cd faac-1.28
2. $./configure --prefix=3RDLIB_INSTALL_PATH --enable-static --disable-shard
3. $make
4. $make install

2. libmp3lame

1. $tar -zxvf lame-3.98.4.tar.gz
2. $./configure --prefix=3RDLIB_INSTALL_PATH--enable-static --disable-shared
3. $make
4. $make install

3.libx264

1. $git clone git://git.videolan.org/x264.git
2. $cd x264
3. $./configure --prefix=3RDLIB_INSTALL_PATH --enable-static
4. $make
5. $make install

4.librtmp

1. $git clone git://git.ffmpeg.org/rtmpdump
2. $cd rtmpdump
3. $cd librtmp

修改Makefile檔案

$vim Makefile

1. #prefix=/usr/local
2. prefix=3RDLIB_INSTALL_PATH
3. ...
4. #CRYPTO=OPENSSL
5. CRYPTO=
6. ...
7. #SO_LDFLAGS_posix=-shared -Wl,-soname,$@ 
8. SO_LDFLAGS_posix=-Wl,-soname,$@
9. ...
10. #SHARED=yes
11. SHARED=no 
12. 儲存並退出

1. $make
2. $cd ..
3. $make SYS=darwin XDEF=-DNO_SSL CRYPTO= SHARED= 
4. $make install

5. ffmpeg配置

1. $cd ffmpeg
2. 修改configure檔案
3. $vim configure
4. ...
5. #enabled librtmp && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
6. enabled librtmp && { check_lib librtmp/rtmp.h RTMP_Socket -lrtmp -lpolarssl -lwinmm -lws2_32 ||
7.                         check_lib librtmp/rtmp.h RTMP_Socket -lrtmp -lssl -lcrypto -lz ||
8.                                                 die "ERROR: librtmp not found or RTMP_Socket() missing, librtmp 
9. version must be >= 2.2.f"; }
10. 儲存並退出
11. 1. 也可以改成這樣：
    2. $vim configure
    3. ...
    4. #enabled librtmp && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
    5. enabled librtmp && { check_lib librtmp/rtmp.h -lrtmp||
    6.                         check_lib librtmp/rtmp.h -lrtmp  -lz ||
    7.                                                 die "ERROR: librtmp not found or RTMP_Socket() missing, librtmp 
    8. version must be >= 2.2.f"; }
    9. 儲存並退出
12. $./configure \
13. --enable-gpl --enable-nonfree --enable-version3 \
14. --disable-shared --enable-static \
15. --enable-pthreads --enable-runtime-cpudetect \
16. --enable-zlib --enable-bzlib \
17. --enable-postproc \
18. --extra-cflags='-I/3RDLIB_INSTALL_PATH/include -DREDIRECT_DEBUG_LOG' \
19. --extra-ldflags='-L/3RDLIB_INSTALL_PATH/lib -gl' \
20. --disable-encoder=aac \
21. --enable-libfaac --enable-encoder=libfaac \
22. --enable-libmp3lame --enable-encoder=libmp3lame \
23. --enable-libx264 --enable-encoder=libx264 \
24. --enable-avfilter --enable-filter=movie \
25. --enable-librtmp
26. $make
27. $make install

在mingw下編譯ffmpeg，並加上對rtmp的支援，即要先編譯librtmp. 編譯過程出了個librtmp not found問題，
​google了一圈，發現有很多類似的問題，但都和我的不完全一樣。
​我的根本問題是mingw下的pkg-config沒有正確安裝。
​librtmp經過make和make install後，庫檔案和標頭檔案都已經分別拷貝到/usr/local/lib和/usr/local/include目錄下，
​ffmpeg在configure時找不到librtmp，為什麼找不到呢？
​百思不得其解，無奈之下google，最終得到提示。

開啟configure檔案，發現下面一行

enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
原來ffmpeg通過pkg-config去找librtmp，難怪找不著了。

解決辦法：

以#符號註釋掉enabled librtmp一行

在configure時加上引數

./configure \

... ...

--extra-ldflags="-L/usr/local/lib" \

--extra-cflags="-I/usr/local/include" \

--extra-libs="-lrtmp" \

... ...

​